Charging pile power distribution method and device, equipment and medium

Abstract

The invention is suitable for the technical field of charging piles, and particularly relates to a charging pile power distribution method and device, equipment and a medium. According to the method, the current charging demand of a target charging pile is collected in real time, when the current charging demand is larger than the charging demand at the last collection moment, the first target number of power modules needing to be added is determined, a first path set of the target charging pile and each remaining available power module is obtained, and according to a preset limiting condition, the first path set is determined; screening the first path set to obtain a screened path set, determining the weight of the corresponding path according to the path parameter of each path in the screened path set, determining a target path according to the first target number and the weight of each path in the screened path set, and controlling the target path to be conducted, according to the invention, the power distribution is dynamically optimized according to the actual charging demand and the power supply condition, so that the charging efficiency can be effectively improved, and the power loss is reduced.

Description

Technical Field

[0001] The present application is applicable to the technical field of charging piles, and in particular, relates to a charging pile power distribution method, device, equipment and medium. Background Art

[0002] With the popularity of electric vehicles and the growing demand for charging, the demand for vehicle charging power is increasing. Split charging piles are becoming more and more popular in the market due to their flexibility and scalability. However, the power distribution problem of the main charging pile in the split charging pile has become a key factor restricting its performance improvement.

[0003] 1) Uneven power distribution: Traditional power distribution methods often adopt static or simple dynamic distribution strategies, which cannot be flexibly adjusted according to actual charging demand and power supply conditions, resulting in excess power in some charging piles and insufficient power in others. 2) Low charging efficiency: Due to the lack of an effective power allocation mechanism, the charging pile may not be able to provide sufficient charging power under high load conditions, affecting charging efficiency and prolonging charging time; 3) Poor user experience: Due to unreasonable power distribution of charging piles, some users may need to wait for a long time before charging, affecting the user experience; 4) Lack of flexibility: Existing power allocation methods often cannot adapt to the rapid changes in charging demand and lack adaptability to different charging scenarios and user needs.

[0004] Therefore, how to dynamically optimize power distribution to meet actual charging needs and power supply and improve charging efficiency has become an urgent problem to be solved. Summary of the invention

[0005] In view of this, the embodiments of the present application provide a charging pile power distribution method, device, equipment and medium to solve the problem of how to dynamically optimize power distribution to meet actual charging needs and power supply and improve charging efficiency.

[0006] In a first aspect, an embodiment of the present application provides a charging pile power allocation method, the charging pile power allocation method comprising: For any target charging pile, collect the current charging demand of the target charging pile in real time, and when the current charging demand is greater than the charging demand at the last collection time, determine a first target number of power modules to be added; Acquire a first path set between the target charging pile and each remaining available power module, filter the first path set according to a preset restriction condition to obtain a filtered path set, and determine a weight of a corresponding path according to a path parameter of each path in the filtered path set; A target path is determined according to the first target quantity and the weight of each path in the screening path set, and the target path is controlled to be turned on so that the remaining available power modules on the target path transmit power to the target charging pile.

[0007] In a second aspect, an embodiment of the present application provides a charging pile power distribution device, the charging pile power distribution device comprising: A charging demand module, for collecting the current charging demand of any target charging pile in real time, and determining a first target number of power modules to be added when the current charging demand is greater than the charging demand at the last collection moment; A path screening module, used to obtain a first path set between the target charging pile and each remaining available power module, screen the first path set according to a preset restriction condition to obtain a screened path set, and determine a weight of a corresponding path according to a path parameter of each path in the screened path set; A power allocation module is used to determine a target path according to the first target quantity and the weight of each path in the screening path set, and control the conduction of the target path so that the remaining available power modules on the target path transmit power to the target charging pile.

[0008] In a third aspect, an embodiment of the present application provides a computer device, comprising a processor, a memory, and a computer program stored in the memory and executable on the processor, wherein the processor implements the charging pile power allocation method as described in the first aspect when executing the computer program.

[0009] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the charging pile power distribution method as described in the first aspect is implemented.

[0010] The beneficial effects of the embodiments of the present application compared with the prior art are as follows: the present application collects the current charging demand of the target charging pile in real time for any target charging pile, determines a first target number of power modules to be added when the current charging demand is greater than the charging demand at the last collection moment, obtains a first path set of the target charging pile and each remaining available power module, filters the first path set according to preset restrictions to obtain a filtered path set, determines the weight of the corresponding path according to the path parameters of each path in the filtered path set, determines the target path according to the first target number and the weight of each path in the filtered path set, controls the target path to be turned on, so that the remaining available power modules on the target path transmit power to the target charging pile, and dynamically optimizes power allocation according to actual charging demand and power supply conditions, thereby effectively improving charging efficiency, reducing power loss, and enhancing user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0012] Figure 1 It is a structural schematic diagram of a charging pile power distribution topology provided in Example 1 of the present application; Figure 2 This is a flow chart of a charging pile power distribution method provided in Embodiment 2 of the present application; Figure 3 It is a structural schematic diagram of a path list modeled according to power distribution topology provided in Embodiment 2 of the present application; Figure 4 This is a flow chart of a charging pile power distribution method provided in Example 3 of the present application; Figure 5 This is a flow chart of a charging pile power distribution method provided in Embodiment 4 of the present application; Figure 6 This is a schematic diagram of the structure of a charging pile power distribution device provided in Embodiment 5 of the present application; Figure 7 It is a structural diagram of a computer device provided in Example 6 of the present application. DETAILED DESCRIPTION

[0013] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0014] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0015] It should also be understood that the term “and / or” used in the specification and appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0016] As used in the specification and appended claims of this application, the term "if" can be interpreted as "when" or "uponce" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "uponce it is determined" or "in response to determining" or "uponce [described condition or event] is detected" or "in response to detecting [described condition or event]", depending on the context.

[0017] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0018] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0019] The embodiments of the present application can acquire and process relevant data based on artificial intelligence technology. Among them, artificial intelligence is the theory, method, technology and application system that uses digital computers or machines controlled by digital computers to simulate, extend and expand human intelligence, perceive the environment, acquire knowledge and use knowledge to obtain the best results.

[0020] AI basic technologies generally include sensors, dedicated AI chips, cloud computing, distributed storage, big data processing technology, operation / interaction systems, mechatronics, etc. AI software technologies mainly include computer vision technology, robotics technology, biometrics technology, speech processing technology, natural language processing technology, and machine learning / deep learning.

[0021] It should be understood that the size of the serial numbers of the steps in the following embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0022] In order to illustrate the technical solution of the present application, a specific embodiment is provided below for illustration.

[0023] A charging pile power distribution method provided in the first embodiment of the present application can be applied in the following cases: Figure 1 In the structural diagram of the charging pile power distribution topology, the charging pile or the power output port of the charging pile can be marked as the source node, that is, Figure 1 The nodes A1~A12 represent the power output ports, and the power modules can be marked as destination nodes, that is, Figure 1 The nodes A13~A24 represent power modules. In addition, Kn and KDn represent DC contactors, which can control the conduction and disconnection of the corresponding circuits. The present application provides a computer device, which is connected to the above-mentioned charging pile to obtain the charging demand of the charging pile. The computer device is connected to the power module to obtain the operating status of the power module. The computer device is also connected to the DC contactor to control the DC contactor to be closed or not to be closed to realize the conduction or disconnection of the corresponding circuit, thereby realizing the addition or release of the power module. Among them, the above-mentioned computer device is not in Figure 1 As shown in the figure, the computer device may include but is not limited to a palmtop computer, a desktop computer, a laptop computer, an ultra-mobile personal computer (UMPC), a netbook, a cloud computer device, a personal digital assistant (PDA) and other computer devices, and may also be implemented as a controller formed by a single-chip microcomputer, a micro control unit, etc.

[0024] See also Figure 2, is a flow chart of a charging pile power allocation method provided in the second embodiment of the present application, and the above charging pile power allocation method is applied to computer equipment. Figure 2 As shown, the charging pile power distribution method may include the following steps: Step S201, for any target charging pile, the current charging demand of the target charging pile is collected in real time, and when the current charging demand is greater than the charging demand at the last collection time, a first target number of power modules to be added is determined.

[0025] In this embodiment, the target charging pile refers to a charging pile in a split charging system. A unit of the charging system for analysis can refer to the above-mentioned charging pile power distribution topology. Of course, this embodiment does not limit the number of charging piles and power modules.

[0026] Each charging pile can be used as a target charging pile, and the current charging demand can be determined by obtaining the charging parameters of the target charging pile. Specifically, the present application can use the charging power as the charging demand, and the present application can also use the charging voltage as the charging demand. Furthermore, the charging priority of the charging pile can also be used as the charging demand.

[0027] The previous collection moment is the moment before the current collection moment, so the charging demand at the previous collection moment is compared with the current charging demand to determine whether the charging demand has changed. If the charging demand becomes higher (that is, the current charging demand is greater than the charging demand at the previous collection moment), the charging power needs to be increased, that is, the power modules need to be increased. If the charging demand has not changed, there is no need to change the number of current power modules. If the charging demand becomes lower, the charging power needs to be reduced.

[0028] Specifically, the first target number of power modules to be added is determined according to the power difference between the current charging demand and the charging demand at the last collection moment, wherein the power of each power module is fixed, and the ratio of the power difference to the fixed power of the power module is taken as the first target number.

[0029] Optionally, real-time collection of the current charging demand of the target charging pile includes: Get the current charging power, current charging current, current charging voltage and current charging priority of the target charging pile; The current charging demand of the target charging pile is calculated based on the current charging power, current charging current, current charging voltage and current charging priority.

[0030] Among them, the charging requirements of the target charging pile are collected, including charging power, charging current, charging voltage and charging priority, and the charging requirements are calculated based on the data, which can accurately reflect the actual charging requirements of the charging pile to ensure the accuracy of the judgment, thereby making the subsequent operation of adding or releasing the power module more accurate.

[0031] Step S202, obtaining a first path set between the target charging pile and each remaining available power module, filtering the first path set according to preset restriction conditions to obtain a filtered path set, and determining the weight of the corresponding path according to the path parameters of each path in the filtered path set.

[0032] In this embodiment, according to the power distribution topology, the output port and power module of the charging pile are used as the source node and destination node respectively, and the DC contactor is used as the path for data modeling. Each path represents a DC contactor connecting these nodes, which can be quantified into a path value according to the selection of the DC contactor. For example, the length of the path can be adjusted according to the rated current value of the DC contactor.

[0033] like Figure 3 As shown, it is a schematic diagram of the structure of a path list according to power distribution topology modeling provided in the second embodiment of the present application, wherein, Figure 1 In the power distribution topology shown, nodes A1~A12 represent power output ports, A13~A24 represent power modules, Figure 3 The number where two nodes cross represents the path length.

[0034] The path list for calculating all paths mentioned above may be obtained in advance and stored in a corresponding memory. When used in step S202, a first path set between the target charging pile and each remaining available power module is directly extracted from the path list, wherein the operating status of each power module is monitored to determine whether the power module is a remaining power module that can be used.

[0035] Of course, in addition to pre-storing the path list, the first path set may also be calculated in real time when power allocation is implemented for the target charging pile.

[0036] The preset restriction condition is a restriction on the screening of the path. It is not recommended to use the condition where the path length is long or the path is complex. It can effectively ensure the reliability of the path and reduce the transmission loss of the path. Of course, there may be more than one path in the screened path set, and the parameters of each path (for example, path length, number of path nodes, etc.) are different. Therefore, the advantages and disadvantages corresponding to the path are different. The weight of the path can be determined by the path parameter. The higher the weight, the better the path, and the lower the weight, the worse the path.

[0037] Optionally, the preset restriction condition includes a path length restriction and a path node restriction. According to the preset restriction condition, the first path set is screened to obtain a screened path set, including: Obtain the path length and the number of path nodes of each path in the first path set, wherein the path length is related to the specifications of the DC contactor that controls the path to be turned on or off on the corresponding path, and the number of path nodes is the number of power modules and charging piles on the corresponding path; From the first path set, the paths whose path length exceeds the path length limit and whose path node number exceeds the path node limit are screened out to obtain a screened path set.

[0038] Among them, the path length limit can be 3, and the path node limit can be 3, so that the paths whose path length and path node number exceed 3 can be screened out, and finally a screened path set is obtained, which can effectively improve the reliability and transmission loss of the path.

[0039] Optionally, according to the path parameters of each path in the filter path set, the weight of the corresponding path is determined, including: For any path in the screening path set, the weight of the path is calculated according to the path length, the number of path nodes and the power transmission loss; Traverse all paths in the filter path set and get the weight of the corresponding path.

[0040] Among them, the path length, the number of path nodes and the power transmission loss of the path are used as path parameters to calculate the weight of the path. The parameters in the function of calculating the weight of the path can be obtained through training or set according to experience, so that they can be accurately used to subsequently determine the target path, improve the accuracy of power module allocation, and provide a better target path to improve charging efficiency and reduce transmission losses.

[0041] Step S203, determining the target path according to the first target quantity and the weight of each path in the screening path set, and controlling the target path to be turned on so that the remaining available power modules on the target path transmit power to the target charging pile.

[0042] Among them, the first target number limits the number of power modules needed, and thus also limits the number of paths. According to the size of the weight and the number of paths, the path corresponding to the number of paths can be found as the target path, and the target path is controlled to be conductive, so that the corresponding power module and the charging pile are conductive, thereby realizing power transmission from the power module to the charging pile.

[0043] Optionally, determining the target path according to the first target quantity and the weight of each path in the screening path set includes: According to the weight of each path in the screening path set, the paths in the screening path set are sorted from high to low to obtain a path sequence; The path with the first target number in the first order is determined from the path sequence as the target path.

[0044] Among them, the higher the weight, the better the path, and the lower the weight, the worse the path. The weights are sorted from high to low to obtain a path sequence. If the first target number is 2, the first two paths can be used as target paths, thereby simply and efficiently determining the target path.

[0045] The embodiment of the present application targets any target charging pile, collects the current charging demand of the target charging pile in real time, determines the first target number of power modules to be added when the current charging demand is greater than the charging demand at the last collection moment, obtains the first path set of the target charging pile and each remaining available power module, filters the first path set according to preset restrictions to obtain a filtered path set, determines the weight of the corresponding path according to the path parameters of each path in the filtered path set, determines the target path according to the first target number and the weight of each path in the filtered path set, controls the target path to be turned on, so that the remaining available power modules on the target path transmit power to the target charging pile, and dynamically optimizes power allocation according to actual charging demand and power supply conditions, thereby effectively improving charging efficiency, reducing power loss, and enhancing user experience.

[0046] See also Figure 4 , is a flow chart of a charging pile power allocation method provided in Example 3 of the present application. Figure 3 As shown, after collecting the current charging demand of the target charging pile in real time in the above step S201, the following steps may also be included: Step S401, when the current charging demand is less than the charging demand at the last collection time, determining a second target number of power modules to be released.

[0047] In this embodiment, if the charging demand becomes lower (ie, the current charging demand is less than the charging demand at the last collection time), the charging power is required to be reduced.

[0048] Specifically, the second target number of power modules to be released is determined based on the power difference between the charging demand at the last collection moment and the current charging demand, wherein the power of each power module is fixed, and the ratio of the power difference to the fixed power of the power module is taken as the second target number.

[0049] Step S402, obtain a second path set between the power module in use and the target charging pile for power transmission to the target charging pile, determine the farthest path of the second target number from the second path set, and control the farthest path to be shut down to release the power module in use on the farthest path.

[0050] Among them, the second path set is the path between the power module in use and the target charging pile for power transmission to the target charging pile, which can be directly obtained. The farthest path can be determined according to the path length of each path. Since the transmission loss of the farthest path is large, the farthest path is shut down to release the corresponding power module in use. The number of released paths corresponds to the second target number.

[0051] The embodiment of the present application designs a dynamic adjustment mechanism to monitor the charging status and power supply of the charging pile in real time, and dynamically adjust the power allocation strategy. When the power demand of the split charging pile decreases, the power module is released from the farthest path. When the demand increases, the power module is loaded from the shortest path. When the charging demand or power supply changes, the power allocation is re-optimized, which can effectively improve the charging efficiency.

[0052] See also Figure 5 , is a flow chart of a charging pile power allocation method provided in Embodiment 4 of the present application. Figure 4 As shown, obtaining the first path set between the target charging pile and each remaining available power module in the above step S202 may include the following steps: Step S501, obtaining a connection topology diagram of all charging piles and all power modules, and determining a target charging pile and all remaining available power modules from the connection topology diagram.

[0053] Among them, according to the power distribution topology, the target charging pile and all the remaining available power modules are determined, the output port of the target charging pile and the remaining available power modules are used as the source node and the destination node respectively, and the DC contactor is used as the path for data modeling. Each path represents a DC contactor connecting these nodes, which can be quantified into a path value according to the selection of the DC contactor. For example, the length of the path can be adjusted according to the rated current value of the DC contactor.

[0054] Step S502: Use the shortest path algorithm to perform a path query on the connection topology graph, and obtain all paths between the target charging pile and each remaining available power module as a first path set.

[0055] Among them, the shortest path algorithm may refer to the Floyd algorithm, the Dijkstra algorithm, the Bellman-Ford algorithm, and the SPFA algorithm. In order to use the usage scenario of this application, the preferred shortest path algorithm is the Dijkstra shortest path algorithm. The Dijkstra shortest path algorithm is based on a greedy single-source shortest path algorithm, which requires that all edges in the graph are non-negative. Two point sets A and B are maintained, where point set A represents the set of points from which the shortest path from the source point to the point has been found, and point set B represents the set of points from which the shortest path from the source point to the point has not been found. Maintain a vector d, d[i] represents the shortest path length from the source point to point i: Continuously perform the following operations: Find the point in point set B with the smallest d[i]i∈B, this point is a candidate node for entering point set A, then relax other points in point set B through this point, update vector d, and then put the candidate point into point set A until point set B is empty.

[0056] Based on the above-mentioned shortest path algorithm, the graph execution path is constructed to obtain all paths from the target charging pile to each remaining available over-power module. All paths constitute a first path set. The above process can accurately and efficiently obtain valid paths, which can be used for subsequent path screening, reduce the construction of invalid paths, and improve algorithm efficiency.

[0057] The algorithm of the present application also collects charging effects and user satisfaction through a feedback mechanism, further optimizes algorithm parameters and power allocation strategies, and improves the robustness and adaptability of the system.

[0058] Corresponding to the charging pile power allocation method in the above embodiment, Figure 6 The structure block diagram of the charging pile power distribution device provided in the fifth embodiment of the present application is shown, and the above charging pile power distribution device is applied to computer equipment. For the convenience of explanation, only the part related to the embodiment of the present application is shown.

[0059] See also Figure 6 , the charging pile power distribution device comprises: The charging demand module 61 is used to collect the current charging demand of any target charging pile in real time, and determine the first target number of power modules to be added when the current charging demand is greater than the charging demand at the last collection time; A path screening module 62 is used to obtain a first path set between the target charging pile and each remaining available power module, screen the first path set according to a preset restriction condition to obtain a screened path set, and determine a weight of a corresponding path according to a path parameter of each path in the screened path set; The power allocation module 63 is used to determine the target path according to the first target quantity and the weight of each path in the screening path set, and control the target path to be turned on so that the remaining available power modules on the target path transmit power to the target charging pile.

[0060] Optionally, after collecting the current charging demand of the target charging pile in real time, the method further includes: When the current charging demand is less than the charging demand at the last collection time, determining a second target number of power modules to be released; A second path set between the power module in use and the target charging pile for power transmission to the target charging pile is obtained, a second target number of farthest paths are determined from the second path set, and the farthest path is controlled to be shut down to release the power module in use on the farthest path.

[0061] Optionally, the path screening module 62 includes: A topology processing unit, used to obtain a connection topology of all charging piles and all power modules, and determine a target charging pile and all remaining available power modules from the connection topology; The path query unit is used to use the shortest path algorithm to perform path query on the connection topology graph, and obtain all paths between the target charging pile and each remaining available power module as a first path set.

[0062] Optionally, the charging demand module 61 includes: A charging parameter acquisition unit, used to acquire the current charging power, current charging current, current charging voltage and current charging priority of the target charging pile; The charging demand calculation unit is used to calculate the current charging demand of the target charging pile according to the current charging power, the current charging current, the current charging voltage and the current charging priority.

[0063] Optionally, the preset restriction condition includes a path length restriction and a path node restriction, and the path screening module 62 includes: A path feature unit, used to obtain the path length and the number of path nodes of each path in the first path set, wherein the path length is related to the specifications of the DC contactor that controls the path to be turned on or off on the corresponding path, and the number of path nodes is the number of power modules and charging piles on the corresponding path; The path screening case source is used to screen out the paths whose path length exceeds the path length limit and whose path node number exceeds the path node limit from the first path set, so as to obtain a screened path set.

[0064] Optionally, the path screening module 62 includes: A weight calculation unit, for calculating the weight of any path in the screening path set according to the path length, the number of path nodes and the power transmission loss of the path; The path traversal unit is used to traverse all paths in the filter path set and obtain the weight of the corresponding path.

[0065] Optionally, the power distribution module 63 includes: A path sorting unit, used to sort the paths in the screening path set from high to low according to the weight of each path in the screening path set, to obtain a path sequence; The target path determination unit is used to determine the path with the first target number in the front order from the path sequence as the target path.

[0066] It should be noted that the information interaction, execution process and other contents between the above-mentioned modules are based on the same concept as the method embodiment of the present application. Their specific functions and technical effects can be found in the method embodiment part and will not be repeated here.

[0067] Figure 7 This is a schematic diagram of the structure of a computer device provided in Example 6 of the present application. Figure 7 As shown, the computer device of this embodiment includes: at least one processor ( Figure 7 Only one is shown), a memory, and a computer program stored in the memory and executable on at least one processor, and when the processor executes the computer program, the steps in any of the above-mentioned charging pile power allocation method embodiments are implemented.

[0068] The computer device may include, but is not limited to, a processor and a memory. Those skilled in the art will appreciate that Figure 7 This is merely an example of a computer device and does not constitute a limitation on the computer device. The computer device may include more or fewer components than those shown in the figure, or a combination of certain components, or different components. For example, it may also include a network interface, a display screen, and an input device.

[0069] The processor may be a CPU, or other general-purpose processors, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc.

[0070] The memory includes a readable storage medium, an internal memory, etc., wherein the internal memory may be the memory of a computer device, and the internal memory provides an environment for the operation of the operating system and computer-readable instructions in the readable storage medium. The readable storage medium may be a hard disk of a computer device, and in other embodiments, it may also be an external storage device of the computer device, for example, a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), etc. equipped on the computer device. Further, the memory may also include both an internal storage unit of the computer device and an external storage device. The memory is used to store an operating system, an application program, a boot loader (BootLoader), data, and other programs, such as the program code of a computer program, etc. The memory may also be used to temporarily store data that has been output or is to be output.

[0071] The technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device is divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated into a processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned device can refer to the corresponding process in the above-mentioned method embodiment, which will not be repeated here. If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, which can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a computer-readable storage medium. When the computer program is executed by the processor, the steps of the above-mentioned method embodiment can be implemented. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may at least include: any entity or device capable of carrying computer program code, recording medium, computer memory, read-only memory (ROM), random access memory (RAM), electric carrier signal, telecommunication signal and software distribution medium. For example, a USB flash drive, a mobile hard disk, a magnetic disk or an optical disk. In some jurisdictions, according to legislation and patent practice, computer-readable media cannot be electric carrier signals and telecommunication signals.

[0072] The present application implements all or part of the processes in the above-mentioned embodiment method, and may also be completed through a computer program product. When the computer program product runs on a computer device, the computer device can implement the steps in the above-mentioned method embodiment when executing the computer program product.

[0073] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0074] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0075] In the embodiments provided in the present application, it should be understood that the disclosed devices / computer equipment and methods can be implemented in other ways. For example, the device / computer equipment embodiments described above are only schematic, for example, the division of modules or units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0076] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0077] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A charging pile power distribution method, characterized in that: The charging pile power distribution method comprises: For any target charging pile, collect the current charging demand of the target charging pile in real time, and when the current charging demand is greater than the charging demand at the last collection time, determine a first target number of power modules to be added; Acquire a first path set between the target charging pile and each remaining available power module, filter the first path set according to a preset restriction condition to obtain a filtered path set, and determine a weight of a corresponding path according to a path parameter of each path in the filtered path set; A target path is determined according to the first target quantity and the weight of each path in the screening path set, and the target path is controlled to be turned on so that the remaining available power modules on the target path transmit power to the target charging pile.

2. The charging pile power distribution method according to claim 1, characterized in that: After the real-time acquisition of the current charging demand of the target charging pile, the method further includes: When the current charging demand is less than the charging demand at the last collection time, determining a second target number of power modules to be released; Obtain a second path set between the power module in use and the target charging pile for power transmission to the target charging pile, determine the farthest path of the second target quantity from the second path set, and control the farthest path to be shut down to release the power module in use on the farthest path.

3. The charging pile power distribution method according to claim 1, characterized in that: The obtaining of a first path set between the target charging pile and each remaining available power module includes: Obtain a connection topology diagram of all charging piles and all power modules, and determine the target charging pile and all remaining available power modules from the connection topology diagram; A shortest path algorithm is used to perform a path query on the connection topology graph, and all paths between the target charging pile and each remaining available power module are obtained as a first path set.

4. The charging pile power distribution method according to claim 1, characterized in that: The real-time collection of the current charging demand of the target charging pile includes: Obtaining the current charging power, current charging current, current charging voltage and current charging priority of the target charging pile; The current charging demand of the target charging pile is calculated according to the current charging power, the current charging current, the current charging voltage and the current charging priority.

5. The charging pile power distribution method according to claim 1, characterized in that: The preset restriction condition includes a path length restriction and a path node restriction. The filtering of the first path set to obtain a filtered path set according to the preset restriction condition includes: Obtaining the path length and the number of path nodes of each path in the first path set, wherein the path length is related to the specification of the DC contactor that controls the path to be turned on or off on the corresponding path, and the number of path nodes is the number of power modules and charging piles on the corresponding path; From the first path set, the paths whose path length exceeds the path length limit and whose path node number exceeds the path node limit are screened out to obtain a screened path set.

6. The charging pile power distribution method according to claim 5, characterized in that: The step of determining the weight of the corresponding path according to the path parameter of each path in the screening path set includes: For any path in the screening path set, a weight of the path is calculated according to the path length, the number of path nodes and the power transmission loss of the path; All paths in the screening path set are traversed to obtain weights of corresponding paths.

7. The charging pile power distribution method according to any one of claims 1 to 6, characterized in that: The determining the target path according to the first target quantity and the weight of each path in the screening path set includes: According to the weight of each path in the screening path set, the paths in the screening path set are sorted from high to low to obtain a path sequence; The path with the first target number that is ranked first in the path sequence is determined as the target path.

8. A charging pile power distribution device, characterized in that: The charging pile power distribution device comprises: A charging demand module, for collecting the current charging demand of any target charging pile in real time, and determining a first target number of power modules to be added when the current charging demand is greater than the charging demand at the last collection moment; A path screening module, used to obtain a first path set between the target charging pile and each remaining available power module, screen the first path set according to a preset restriction condition to obtain a screened path set, and determine a weight of a corresponding path according to a path parameter of each path in the screened path set; A power allocation module is used to determine a target path according to the first target quantity and the weight of each path in the screening path set, and control the conduction of the target path so that the remaining available power modules on the target path transmit power to the target charging pile.

9. A computer device, characterized in that: The computer device includes a processor, a memory, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the charging pile power distribution method according to any one of claims 1 to 7 is implemented.

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

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