Charging power distribution method, apparatus and system, and charging management device and storage medium

Abstract

Provided in the present application are a charging power distribution method, apparatus and system, and a charging management device and storage medium. The method is applied to a charging management device, the charging management device is configured to manage a charging station, the charging station comprises at least one charging group, and each charging group comprises at least two charging piles. The method comprises: determining a to-be-distributed total power value of a target charging group, wherein the target charging group is a charging group to which a charging power has not been distributed or the charging power of which needs to be adjusted; acquiring charging power data of each charging pile in the target charging group; and calculating an actual distributed power of each charging pile on the basis of a weighted average distribution algorithm, the to-be-distributed total power value of the target charging group, and the charging power data. The technical solution can improve the power utilization efficiency of a charging station.

Description

Charging power distribution method, device, charging management equipment, system and storage medium

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on August 8, 2023, with application number 202310994724.1 and application name “Charging power distribution method, device, charging management equipment, system and storage medium”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of intelligent charging technology, and in particular to a charging power distribution method, device, charging management equipment, system and storage medium. Background Art

[0003] With the vigorous development of the new energy industry, electric vehicles are becoming more and more common in our lives, and more and more regions are actively deploying charging stations. Charging stations are facilities that provide charging services for electric vehicles. Usually, multiple charging piles are installed in one charging station to meet the needs of multiple electric vehicles charging at the same time. At present, charging piles usually charge electric vehicles according to the power limit of the charging pile. This leads to the risk of overloading the charging station if multiple charging piles are used at the same time when the charging station is large. When this happens, the upper limit charging power of the charging station is usually evenly distributed according to the number of charging piles in the station. However, this method can easily lead to low power utilization efficiency of some charging piles, thereby making the power utilization efficiency of the entire charging station low.

[0004] Summary of the Invention

[0005] The present application provides a charging power distribution method, device, charging management equipment, system and storage medium, which can solve the technical problem in the prior art that the upper limit charging power of a charging station is evenly distributed according to the number of charging piles in the station, resulting in low power utilization efficiency of the entire charging station.

[0006] In one embodiment of the present application, a charging power allocation method is provided, which is applied to a charging management device, wherein the charging management device is used to manage a charging station, wherein the charging station includes at least one charging group, and each charging group includes at least two charging piles. The method includes: determining a total power value to be allocated for a target charging group, wherein the target charging group is a charging group that has not been allocated charging power or requires charging power adjustment; obtaining charging power data for each charging pile in the target charging group; and calculating the actual allocated power of each charging pile based on a weighted average allocation algorithm according to the total power value to be allocated for the target charging group and the charging power data.

[0007] In one possible implementation, determining the total power value to be allocated for the target charging group includes: obtaining the total power upper limit value of the charging station; calculating the charging power upper limit value of each charging group; and calculating the total power value to be allocated for the target charging group based on the power upper limit value of each charging group and the total power upper limit value of the charging station.

[0008] In one possible implementation, the total power value to be allocated of the target charging group is calculated based on the power upper limit values ​​of the individual charging groups and the total power upper limit value of the charging station, including: if the sum of the power upper limit values ​​of the individual charging groups is less than or equal to the total power upper limit value of the charging station, then the total power value to be allocated of the target charging group is the power upper limit value of the target charging group; if the total power upper limit value of the individual charging groups is greater than the total power upper limit value of the charging station, then based on the weighted average allocation algorithm, the total power value to be allocated of the target charging group is calculated based on the total power upper limit value of the charging station and the power upper limit values ​​of the individual charging groups.

[0009] In one possible implementation, the calculating the charging power upper limit value of each charging group includes: obtaining the rated charging power upper limit value of each charging pile under the i-th charging group, where i is an integer greater than or equal to 1 and less than or equal to n, and n is the number of charging groups under the charging station; calculating the total rated charging power upper limit value of the i-th charging group based on the rated charging power upper limit value; using the total rated charging power upper limit value as the power upper limit value of the i-th charging group; using the i+1-th charging group as the i-th charging group, and returning to execute the step of obtaining the rated charging power upper limit value of each charging pile under the i-th charging group until i=n.

[0010] In one possible implementation, the method further includes: after detecting that a preset time threshold is exceeded, receiving a custom charging power upper limit value set by the user on the charging pile; calculating the total custom charging power upper limit value of each charging pile under the target charging group; if the total custom charging power upper limit value is less than the total rated charging power upper limit value, adjusting the power upper limit value of the target charging group to the total custom charging power upper limit value.

[0011] In one possible implementation, the charging power data of each charging pile in the target charging group includes at least: an upper limit value and a minimum value of the charging power of each charging pile, wherein the minimum value of the charging power of each charging pile is the same and is preset by the charging management device.

[0012] In one possible implementation, the weighted average allocation algorithm is used to calculate the actual allocated power of each charging pile based on the total power to be allocated of the target charging group and the charging power data, including: calculating the minimum total charging power based on the minimum charging power and the number of charging piles in the target charging group; calculating the total required charging power upper limit based on the charging power upper limit of each charging pile; determining whether the total power to be allocated of the target charging group is less than or equal to the minimum total charging power, or the required charging power upper limit is less than or equal to the minimum total charging power; if so, determining the actual allocated power of each charging pile to be the minimum charging power; if not, determining whether the total power to be allocated of the target charging group is greater than or equal to the total required charging power upper limit; if the total power to be allocated of the target charging group is greater than or equal to the total required charging power upper limit, determining the actual allocated power of each charging pile to be the charging power upper limit of each charging pile; if the total power to be allocated of the target charging group is less than the total required charging power upper limit, calculating the weight value of each charging pile, and calculating the actual allocated power of each charging pile based on the weight value.

[0013] In one possible implementation, if the total power value to be allocated of the target charging group is less than the total value of the required charging power upper limits, the weight value of each charging pile is calculated, and the actual allocated power of each charging pile is calculated according to the weight value, including: if the total power value to be allocated of the target charging group is less than the total value of the required charging power upper limits, the minimum value of the charging power upper limits of each charging pile is obtained as the upper limit minimum value; a first weight value is calculated according to the total power to be allocated of the target charging group and the total value of the required charging power upper limits; if the product of the upper limit minimum value and the first weight value is greater than or equal to the charging power minimum value, the actual allocated power of each charging pile is the product of the charging power upper limit value of each charging pile and the first weight value.

[0014] In one possible implementation, the method further includes: if the product of the minimum upper limit value and the first weight value is less than the minimum charging power value, then calculating the second weight value based on the minimum charging power value, the total power value to be allocated of the target charging group, the total required charging power upper limit value, and the number of charging piles under the target charging group; and calculating the actual allocated power of each charging pile based on the charging upper limit value of each charging pile, the minimum charging power value, and the second weight value.

[0015] In a possible implementation, the method further includes: if the total power value to be allocated of the target charging group is greater than or equal to the total required charging power upper limit value, the actual allocated power of each charging pile is the charging power upper limit value of each charging pile.

[0016] In one embodiment of the present application, a charging power distribution device is provided, which is applied to a charging management device, wherein the charging management device is used to manage a charging station, wherein the charging station includes at least one charging group, and each charging group includes at least two charging piles. The device includes: a determination module, which is used to determine the total power value to be allocated of a target charging group, wherein the target charging group is a charging group that has not been allocated charging power or needs to adjust the charging power; an acquisition module, which is used to obtain the charging power data of each charging pile in the target charging group; and a calculation module, which is used to calculate the actual allocated power of each charging pile based on the total power value to be allocated of the target charging group and the charging power data based on a weighted average allocation algorithm.

[0017] One embodiment of the present application provides a charging management device, including a memory, a processor and a transceiver, wherein the memory and the transceiver are connected to the processor, the transceiver is used to exchange data with a charging station, and the processor is used to execute one or more computer programs stored in the memory. When the processor executes the one or more computer programs, the charging management device implements the method described in the first aspect.

[0018] In one embodiment of the present application, a computer-readable storage medium is provided. The computer-readable storage medium stores a computer program. The computer program includes program instructions. When executed by a processor, the program instructions cause the processor to execute the charging power distribution method according to the first aspect.

[0019] One embodiment of the present application provides a charging power distribution system, including a charging management device and a charging station, wherein the charging station includes at least one charging group, each charging group includes at least two charging piles, and the charging management device is used to execute the method described in the first aspect.

[0020] The charging management device of the present application first determines the total power value to be allocated of the target charging group, then obtains the charging power data of each charging pile in the target charging group, and calculates the actual allocated power of each charging pile based on the total power value to be allocated of the target charging group and the charging power data, thereby realizing the adjustment of the charging power of each charging pile. Since the actual allocated power is allocated based on the constraint condition of the total power value to be allocated of the target charging group, the risk of the charging station exceeding the power load is avoided, and the actual allocated power fully considers the charging power situation of each charging pile itself, and is reasonably allocated based on the average allocation algorithm, which also improves the utilization efficiency of each charging pile and improves the overall power utilization efficiency of the charging station. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments of the present application. 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 the drawings without creative work.

[0022] FIG1 is a schematic diagram of the architecture of a charging power distribution system provided in an embodiment of the present application;

[0023] FIG2 is a flow chart of a charging power distribution method provided in an embodiment of the present application;

[0024] FIG3 is a technical flow chart of a weighted average allocation algorithm provided in an embodiment of the present application;

[0025] FIG4 is a flow chart of another charging power distribution method provided in an embodiment of the present application;

[0026] FIG5 is a schematic diagram of the structure of a charging power distribution device provided in an embodiment of the present application;

[0027] FIG6 is a schematic structural diagram of a charging management device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0029] It should be noted that, if there is no conflict, the various features in the embodiments of the present invention can be combined with each other and are all within the scope of protection of the present invention. In addition, although the functional modules are divided in the device schematic and the logical order is shown in the flow chart, in some cases, the steps shown or described can be performed in a different order than the module division in the device or the order in the flow chart. Furthermore, the words "first", "second", "third", etc. used in the present invention do not limit the data and execution order, but only distinguish between the same or similar items with basically the same functions and effects.

[0030] To describe the present application in more detail, a charging power distribution system involved in the present application is first introduced. The charging power distribution system includes a charging management device and a charging station, the charging station includes at least one charging group, and each charging group includes at least two charging piles. For example, please refer to Figure 1, which is a charging power distribution system 10 provided in an embodiment of the present application. The charging power distribution system includes: a charging management device 101 and a charging station 102, wherein the charging station 102 includes a first charging group 1021 and a second charging group 1022 (it can be understood that in other embodiments, the number of the charging groups can be any number), the first charging group 1021 includes charging piles u, charging pile v, and charging pile w, and the charging group b includes charging piles x, charging pile y, and charging pile z.

[0031] The charging management device 101 is used to manage the charging station 102. This intelligent management device integrates information about charging electric vehicles, grid load information, and charging information from charging piles. It can make charging power allocation decisions based on real-time data and issue corresponding instructions to each charging pile under the charging pile 102 for execution.

[0032] In some feasible implementations, the charging management device 101 may be composed of one or more workstations or servers, which can realize monitoring of charging piles and data collection and query, as well as data processing and analysis of the entire charging station.

[0033] Charging station 102 is a facility for providing charging services for electric vehicles and is typically located in cities, highways, or commercial areas. Charging station 102 includes two charging groups: a first charging group 1021 and a second charging group 1022. In some feasible embodiments, the charging groups can be assigned by the charging management device 101 or the charging station 102. For example, the charging management device 101 can group charging piles that share the same power supply point into a single charging group.

[0034] Furthermore, each charging group may include at least two charging stations. The first charging group 1021 includes charging stations u, v, and w, and charging group b includes charging stations x, y, and z. A charging station connects the electric vehicle to the power source and typically consists of a metal casing, a charging plug, a controller, and a communication module. The charging station can provide charging output at different power levels, but due to its inherent limitations, it typically has an upper charging power limit and a charging start power value. The charging start power is the power at which the charging station is activated to power the electric vehicle.

[0035] It can be understood that the composition of the charging station 102 and the charging management device 101 shown in Figure 1 above is only an example. In actual situations, devices or modules can be integrated, adjusted or added as needed. For example, the charging station 102 may also include a power supply system, which mainly provides power for the charging equipment. It can be composed of primary equipment (switches, transformers, lines, etc.) and secondary equipment (including detection, protection, control devices, etc.), source filtering devices, etc. This application does not impose any restrictions on this.

[0036] Based on the above-mentioned charging power distribution system, the charging power distribution method provided in this application can be implemented.

[0037] Please refer to FIG2 below, which is a flow chart of a charging power allocation method provided in an embodiment of the present application. The charging power allocation method shown in FIG2 can be executed by the charging management device. The method may include:

[0038] S21. Obtain the total upper limit value of the power of the charging station.

[0039] It should be noted that the total power limit of a charging station is typically determined by factors such as the charging station's design, equipment configuration, and power network capabilities. It is generally fixed and may be adjusted as the charging station is upgraded or modified. In some feasible implementations, the total power limit may also vary based on the power grid capacity in the area where the charging station is located.

[0040] S22: Calculate the upper limit of charging power for each charging group.

[0041] As a feasible implementation method, the charging power upper limit value of each charging group can be the minimum value between the user-defined charging power upper limit value and the sum of the power upper limits of all charging piles in the charging group.

[0042] As another feasible implementation method, the charging power upper limit value of each charging group can also be the sum of the power upper limits of all charging piles in the charging group when it does not exceed the preset time threshold. When it exceeds the preset time threshold, the minimum value of the user-set custom charging power upper limit value and the current sum of the power upper limits of all charging piles in the charging group is taken.

[0043] S23: Call the weighted average allocation algorithm to calculate the actual allocated power of each charging group.

[0044] As a feasible implementation method, the charging management device can combine the charging power upper limit values ​​of each charging group into a unit dictionary, and call the weighted average allocation algorithm to calculate the actual allocated power of each charging group based on the data in the unit dictionary and the total power upper limit value of the charging station.

[0045] As another feasible implementation, when charging power only needs to be allocated to one charging group, the actual allocated power of the charging group can be the minimum value between the rated charging power upper limit of the charging group and the charging power upper limit of the charging station, and steps S24 and S25 are executed.

[0046] It should be noted that the actual allocated power of each charging group obtained in this step is used as the total power value to be allocated for each charging group.

[0047] S24. Calculate the upper limit of the charging power of each charging pile in each charging group.

[0048] As a feasible implementation method, the charging power upper limit of each charging pile can be determined based on the rated charging power upper limit of the charging pile itself and the charging power upper limit of the charging vehicle, or it can be determined based on the charging power upper limit of the charging pile itself, the charging power upper limit of the charging vehicle, and the custom charging power upper limit reported by the user during the actual charging process.

[0049] For example, within the preset charging time threshold (for example, from the start of charging to 30 minutes of charging), the charging power upper limit of each charging pile can be the minimum of the rated charging power upper limit of the charging pile itself and the charging power upper limit of the charging vehicle, plus a certain threshold. After exceeding the preset time threshold (such as the charging time exceeds 30 minutes), the charging power upper limit of each charging pile can be the minimum of the charging power upper limit of the charging pile itself, the charging power upper limit of the charging vehicle, and the custom charging power upper limit reported by the user during the actual charging process, plus a certain threshold. The threshold can be a fixed value or set at a certain ratio of the minimum value, such as 10% of the minimum value. Increasing the threshold can avoid the problem of current loss to a certain extent.

[0050] S25. Call a weighted average allocation algorithm for each charging group to calculate the actual allocated power of each charging pile.

[0051] As a feasible implementation method, the charging management device can organize the obtained charging power upper limit value corresponding to each charging pile into a unit dictionary according to the charging group. Each charging group distributes the charging power according to its own actual allocated power calculated in the aforementioned step S23, and calls the weighted average allocation algorithm for each charging group to calculate the actual allocated power of each pile.

[0052] In some embodiments, after calculating the actual allocated power of each charging pile, the charging management device can control the charging pile to charge according to the corresponding actual allocated power. When the charging time exceeds the preset time threshold, it can be adjusted in combination with the custom charging power upper limit actually reported by the user. For example, the charging management unit can add a monitoring module for the actual allocated power of the charging pile and the user power reporting. If it is monitored that the custom charging power upper limit actually reported by the user is less than the actual allocated power or the actual allocated power + a certain power threshold, step S24 is re-executed to adjust the charging power upper limit of the charging pile according to the custom charging power upper limit. If the charging power upper limit is less than this value, no adjustment is made. Otherwise, the maximum value is adjusted to the custom charging power upper limit. After adjustment, step S25 is re-executed to call the weighted average allocation algorithm to calculate the power of each charging pile.

[0053] The following describes the weighted average allocation algorithm involved in this application. In this application, this weighted average allocation algorithm can be used to calculate the actual allocated power of each charging group, and can also be used to calculate the actual allocated power of each charging pile under each charging group. Please refer to Figure 3, which is a technical flow chart of a weighted average allocation algorithm provided in an embodiment of this application. The algorithm shown in Figure 3 uses the calculation of the actual allocated power of each charging pile under each charging group as an example, and may include:

[0054] S301. Obtain the total upper limit of the power of the charging group = total, the number of charging piles to be allocated to the charging group = n, and the minimum charging power = min-c.

[0055] It should be noted that the total power limit (total) refers to the total power to be allocated for the charging group, which can be calculated based on the power limit of the entire charging station. The minimum charging power (min-c) is the minimum power required to be allocated to each charging pile during the allocation process. The min-c for each charging pile can be the same and is a preset value.

[0056] S302. Obtain the upper limit values ​​of the charging power of n charging piles to be assigned, record the upper limit value of the charging power of the i-th charging pile to be assigned as max-i, and take the minimum value of the n upper limit values ​​of the charging power as min-v.

[0057] It should be noted that the charging power upper limit max-i represents the maximum power that can be allocated to the charging pile i.

[0058] S303: Calculate the total upper limit of required power of n charging piles = all - need.

[0059] It should be noted that the total required power upper limit value all-need is the sum of the charging power upper limits of n charging piles.

[0060] In one embodiment, the charging power upper limit of the charging pile can be determined based on the rated charging power upper limit of the charging pile itself and the charging power upper limit of the charging vehicle, for example, taking the minimum value among the above two values; or it can be determined based on the charging power upper limit of the charging pile itself, the charging power upper limit of the charging vehicle, and the custom charging power upper limit reported by the user during the actual charging process, for example, taking the minimum value among the above three values.

[0061] S304: Determine whether total ≤ min-c*n, or all-need ≤ min-c*n.

[0062] It should be noted that min-c*n represents the power value required to allocate the minimum charging power to n charging piles.

[0063] S305: If yes, determine the actual allocated power of each charging pile = min-c.

[0064] In this step, if the total power upper limit value total or the total required power upper limit value all-need of n charging piles is not sufficient to evenly distribute the charging power to the minimum value, the actual distributed power of each charging pile is set to min-c.

[0065] S306: Determine whether total≥all-need.

[0066] S307: If yes, determine the actual allocated power of each charging pile = max-i.

[0067] In this step, if total≥all-need, it can be considered that the total power value to be allocated satisfies the requirement of allocating the n charging piles with their own upper charging power limits. At this time, it can be determined that the actual allocated power of each charging pile = max-i.

[0068] If total≤all-need, it can be considered that the total power value to be allocated does not meet the requirement of allocating the n charging piles with their own upper charging power limits, and then steps S308-S310 can be further executed.

[0069] S308: If not, determine whether min-v*total\all-need≥min-c.

[0070] It should be noted that the purpose of this step is to determine whether each charging pile can satisfy the weighted allocation according to at least the minimum charging power.

[0071] S309: If yes, calculate ms=total\all-need, and the actual allocated power of charging pile i=max-i*ms.

[0072] In this step, if the conditions shown in S308 above are met, weighted distribution can be performed according to the rated charging power upper limit of each charging pile, and the weight value is the value of ms solved in this step.

[0073] S310. If not, calculate ms = (total-min-c*n)*(all-need-min-c*n), and the actual allocated power of charging pile i = (max-i-min-c)*ms+min-c.

[0074] In this step, if the condition shown in S308 above is not met, the charging power can be allocated first according to the minimum power value min-c, and then the remaining charging power to be allocated can be weightedly allocated, and the weight value is the value of ms solved in this step.

[0075] It is understandable that the calculation process of the above-mentioned weighted average allocation algorithm can also be applied to calculate the actual allocated power of each charging group, which will not be elaborated here.

[0076] Based on the above-mentioned weighted average allocation algorithm, the actual allocated power suitable for each charging pile can be solved between the preset minimum power limit and the upper power limit, so that the charging power of the charging piles can be reasonably allocated and the utilization efficiency of the station power can be improved.

[0077] Please refer to FIG4 below, which shows another charging power distribution method provided in an embodiment of the present application. The method may include the following steps:

[0078] S401: The charging management device determines a total power value to be allocated for a target charging group.

[0079] The target charging group is a charging group to which charging power is not allocated or to which charging power needs to be adjusted.

[0080] In one embodiment, when there is only one charging group at a charging station, if charging power needs to be allocated or adjusted for the charging group, the charging group is the target charging group, and the minimum value between the total rated charging power upper limit of the target charging group and the charging power upper limit of the charging station can be taken as the total power value to be allocated.

[0081] In one embodiment, when there are two or more charging groups in the charging station that need to allocate or adjust charging power, step S401 may include:

[0082] S4011. Obtain a total upper limit value of the power of the charging station.

[0083] It should be noted that the total power limit of a charging station is typically determined by factors such as the charging station's design, equipment configuration, and power network capabilities. It is generally fixed and may be adjusted as the charging station is upgraded or modified. In some feasible implementations, the total power limit may also vary based on the power grid capacity in the area where the charging station is located.

[0084] S4012: Calculate the upper limit of charging power for each charging group.

[0085] As a feasible implementation manner, the upper limit value of the charging power of each charging group can be determined according to the upper limit values ​​of the power of all charging piles in the charging group.

[0086] For example, the S4012 step includes: obtaining the rated charging power upper limit value of each charging pile under the i-th charging group, where i is an integer greater than or equal to 1 and less than or equal to n, and n is the number of charging groups under the charging station; calculating the total rated charging power upper limit value of the i-th charging group based on the rated charging power upper limit value; using the total rated charging power upper limit value as the power upper limit value of the i-th charging group; using the i+1-th charging group as the i-th charging group, and returning to execute the step of obtaining the rated charging power upper limit value of each charging pile under the i-th charging group and the custom charging power upper limit value set by the user, until i=n.

[0087] As another feasible implementation method, the charging power upper limit value of each charging group can also be determined according to the power upper limits of all charging piles in the charging group and the total charging power upper limit value set by the user.

[0088] In one embodiment, the method further includes: after detecting that a preset time threshold is exceeded, receiving a custom charging power upper limit value set by a user on the charging pile; calculating the total custom charging power upper limit value of each charging pile under the target charging group; if the total custom charging power upper limit value is less than the total rated charging power upper limit value, adjusting the power upper limit value of the target charging group to the total custom charging power upper limit value.

[0089] For example, after exceeding the preset time threshold, the charging management device can obtain the custom charging power upper limit value set by the user of each charging pile under the i-th charging group, calculate the total custom charging power upper limit value of the i-th charging group based on the custom charging power upper limit value, compare the total custom charging power upper limit value with the total rated charging power upper limit value, and take the minimum value as the power upper limit value of the i-th charging group; take the i+1-th charging group as the i-th charging group, and return to execute the step of obtaining the custom charging power upper limit value set by the user of each charging pile under the i-th charging group, until i=n.

[0090] S4013: Calculate the total power value to be allocated to the target charging group according to the power upper limit values ​​of the respective charging groups and the total power upper limit value of the charging stations.

[0091] In one embodiment, step S4013 includes: if the sum of the power caps of the various charging groups is less than or equal to the total power cap of the charging station, then the total power to be allocated to the target charging group is the power cap of the target charging group. If the total power cap of the various charging groups is greater than the total power cap of the charging station, then, based on the weighted average allocation algorithm, calculating the total power to be allocated to the target charging group according to the total power cap of the charging station and the power caps of the various charging groups.

[0092] Specifically, the weighted average allocation algorithm can refer to the steps shown in Figure 3. The difference from the steps shown in Figure 3 is that the data of the charging piles originally obtained is changed to the data of the charging groups obtained, and the data of the charging groups originally obtained is changed to the data of the charging stations. For example, when solving the total power value to be allocated of the target charging group, the total power upper limit value of the charging station = total, the charging group to be allocated under the charging station = n, and the minimum charging power = min-c*n. The specific solution process is similar to that of Figure 3 and will not be repeated here.

[0093] S402: The charging management device obtains the charging power data of each charging pile in the target charging group.

[0094] In one embodiment, the charging power data of each charging pile in the target charging group includes at least: an upper limit value and a minimum value of the charging power of each charging pile, wherein the minimum value of the charging power of each charging pile is the same and is preset by the charging management device.

[0095] As a feasible implementation method, the charging power upper limit value of each charging pile can be determined based on the rated charging power upper limit value of the charging pile itself and the charging power upper limit value of the charging vehicle, or it can be determined based on the charging power upper limit value of the charging pile itself, the charging power upper limit value of the charging vehicle, and the custom charging power upper limit value reported by the user during the actual charging process.

[0096] One feasible approach is that within the preset charging time range (e.g., from the start of charging to 30 minutes of charging), the charging power upper limit of each charging pile can be the minimum of the rated charging power upper limit of the charging pile itself and the charging power upper limit of the charging vehicle, plus a certain threshold. After exceeding the preset time range (e.g., the charging time exceeds 30 minutes), the charging power upper limit of each charging pile can be the minimum of the charging power upper limit of the charging pile itself, the charging power upper limit of the charging vehicle, and the custom charging power upper limit reported by the user during the actual charging process, plus a certain threshold. The threshold can be a fixed value or set at a certain ratio of the minimum value, such as 10% of the minimum value. Increasing the threshold can avoid the problem of current loss to a certain extent.

[0097] S403 : The charging management device calculates the actual allocated power of each charging pile based on a weighted average allocation algorithm according to the total power value to be allocated of the target charging group and the charging power data.

[0098] In one embodiment, the step S403 includes:

[0099] S4031. Calculate a minimum total charging power value according to the minimum charging power value and the number of charging piles in the target charging group.

[0100] In this step, the product of the minimum charging power and the required charging power calculated by the number of charging piles in the target charging group can be used as the minimum total charging power. For example, assuming that the minimum charging power min-c = 6 and the number of charging piles = 3, the minimum total charging power is min-all = 18.

[0101] S4032. Calculate the total required charging power upper limits based on the charging power upper limits of the respective charging piles.

[0102] In this step, the charging power upper limits of the various charging piles obtained in step S402 may be summed to obtain the total required charging power upper limit.

[0103] S4033: Determine whether the total power value to be allocated of the target charging group is less than or equal to the minimum total charging power value, or whether the required charging power upper limit is less than or equal to the minimum total charging power value.

[0104] In this step, the charging management device first compares the minimum total value of the charging power with the total value of the required upper limit of the charging power. If the minimum total value of the charging power is greater than the total value of the required upper limit of the charging power, it means that the charging power cannot be allocated according to the minimum charging power value of the charging pile, and the following S4033 step is executed. If the minimum total value of the charging power is less than or equal to the total value of the required upper limit of the charging power, the following S4034 and subsequent steps can be executed.

[0105] S4033: If yes, determine that the actual allocated power of each charging pile is the minimum charging power.

[0106] In this step, since the total minimum charging power value is greater than the total upper limit of the required charging power value, the average distribution according to the minimum charging power value is not satisfied. However, since the minimum starting power of each charging pile must be the minimum charging power value, the charging management device still determines that the actual allocated power of each charging pile is the minimum charging power value.

[0107] In some feasible implementations, when the actual allocated power of each charging pile is the minimum charging power, the charging management device can start the charging piles with higher priority first according to the charging priority of each charging pile. After the charging piles with higher priority are used up, the charging piles that have not been started can be started according to the charging priority.

[0108] S4034: If not, determine whether the total power value to be allocated of the target charging group is greater than or equal to the total required charging power upper limit value.

[0109] S4035: If the total power value to be allocated of the target charging group is greater than or equal to the total required charging power upper limit value, determine the actual allocated power of each charging pile to be the charging power upper limit value of each charging pile.

[0110] In this step, if the total power value to be allocated of the target charging group is greater than or equal to the total required charging power upper limit value, it can be considered that the total power value to be allocated satisfies the requirement of allocating n charging piles according to their own rated charging power upper limit values. At this time, the actual allocated power of each charging pile can be determined.

[0111] S4036: If the total power to be allocated of the target charging group is less than the total upper limit of the required charging power, calculate the weight value of each charging pile, and calculate the actual allocated power of each charging pile according to the weight value.

[0112] In this step, if the total power value to be allocated of the target charging group is less than the total required charging power upper limit, it can be considered that the total power value to be allocated does not meet the requirement of allocating each charging pile according to its own charging power upper limit. In this case, the weight of each charging pile can be calculated and allocated according to the weight.

[0113] As a feasible implementation method, the weight value may be the first weight value when allocating according to the upper limit value of the charging power of each charging pile, or the second weight value when allocating according to the minimum value of the charging power.

[0114] In one embodiment, the S4036 step includes: if the total power to be allocated of the target charging group is less than the total upper limit of the required charging power, obtaining the minimum value of the upper limit of the charging power of each charging pile as the minimum upper limit; calculating a first weight value based on the total power to be allocated of the target charging group and the total upper limit of the required charging power; if the product of the minimum upper limit and the first weight value is greater than or equal to the minimum charging power, the actual allocated power of each charging pile is the product of the upper limit of the charging power of each charging pile and the first weight value.

[0115] A feasible implementation method, as shown in steps S308 and S309 in Figure 3, is that the charging management device can determine whether each charging pile can meet the weighted allocation according to at least the minimum charging power. If so, the total power to be allocated of the target charging group is divided by the total value of the required charging power upper limit as the first weight value. At this time, the actual allocated power of each charging pile is the product of the first weight value and its own charging power upper limit.

[0116] In one embodiment, if the product of the minimum upper limit and the first weight value is less than the minimum charging power value, a second weight value is calculated based on the minimum charging power value, the total power value to be allocated for the target charging group, the total required charging power upper limit value, and the number of charging piles in the target charging group;

[0117] The actual allocated power of each charging pile is calculated according to the charging upper limit value of each charging pile, the minimum charging power value, and the second weight value.

[0118] In one feasible implementation, as shown in step S310 in Figure 3, the charging management device can first allocate the charging power according to the minimum power value min-c, and then perform a weighted allocation of the remaining charging power to be allocated. Specifically, the second weight value satisfies ms = (total-min-c*n)*(all-need-min-c*n), where total is the total power value to be allocated for the target charging group, min-c is the minimum charging power value, all-need is the total upper limit of the required charging power for the target charging group, and n is the number of charging piles in the target charging group.

[0119] At this time, the actual allocated power of each charging pile satisfies Pi = (max-i-min-c)*ms+min-c, where Pi represents the actual allocated power of charging pile i, and max-i represents the upper limit of the charging power of charging pile i.

[0120] In one embodiment, if the total power value to be allocated of the target charging group is greater than or equal to the total required charging power upper limit value, the actual allocated power of each charging pile is the charging power upper limit value of each charging pile.

[0121] A feasible implementation method, as shown in step S07 in Figure 3, is that if the total power value to be allocated of the target charging group is greater than or equal to the total value of the required charging power upper limit, it can be considered that the total power value to be allocated satisfies the requirement to allocate each charging pile according to its own charging power upper limit. At this time, the actual allocated power of each charging pile can be determined to be its own charging power upper limit.

[0122] It can be seen that through the charging power allocation method provided by the embodiment of the present invention, the charging management device first determines the total power value to be allocated of the target charging group, and then obtains the charging power data of each charging pile in the target charging group. Based on the weighted average allocation algorithm, the actual allocated power of each charging pile is calculated according to the total power value to be allocated of the target charging group and the charging power data, thereby realizing the adjustment of the charging power of each charging pile. Since the actual allocated power is allocated based on the constraint condition of the total power value to be allocated of the target charging group, the risk of the charging station exceeding the power load is avoided, and the actual allocated power fully considers the charging power situation of each charging pile itself, and also introduces the user-defined charging power upper limit value reported by the user as a constraint condition, and performs reasonable allocation based on the average allocation algorithm, so that the actual allocated power in autumn is more in line with the actual situation, thereby improving the utilization efficiency of each charging pile and improving the overall power utilization efficiency of the charging station.

[0123] Referring to FIG5 , FIG5 is a diagram of a charging power distribution device provided in an embodiment of the present application, which is applied to a charging management device for managing a charging station, wherein the charging station includes at least one charging group, and each charging group includes at least two charging piles. The charging power distribution device 50 includes:

[0124] Determination module 501, configured to determine a total power value to be allocated for a target charging group, wherein the target charging group is a charging group to which no charging power is allocated or to which charging power needs to be adjusted;

[0125] An acquisition module 502 is configured to acquire charging power data of each charging pile in the target charging group;

[0126] The calculation module 503 is configured to calculate the actual allocated power of each charging pile based on a weighted average allocation algorithm according to the total power value to be allocated of the target charging group and the charging power data.

[0127] In one possible design, the determination module 501, when used to determine the total power value to be allocated of the target charging group, is specifically used to: obtain the total power upper limit value of the charging station; calculate the charging power upper limit value of each charging group; and calculate the total power value to be allocated of the target charging group based on the power upper limit value of each charging group and the total power upper limit value of the charging station.

[0128] In one possible design, the determination module 501 is used to calculate the total power value to be allocated of the target charging group based on the power upper limit values ​​of the various charging groups and the total power upper limit value of the charging station, specifically for: if the sum of the power upper limit values ​​of the various charging groups is less than or equal to the total power upper limit value of the charging station, then the total power value to be allocated of the target charging group is the power upper limit value of the target charging group; if the total power upper limit value of the various charging groups is greater than the total power upper limit value of the charging station, then based on the weighted average allocation algorithm, the total power value to be allocated of the target charging group is calculated according to the total power upper limit value of the charging station and the power upper limit values ​​of the various charging groups.

[0129] In one possible design, the determining module 501, when used to calculate the charging power upper limit of each charging group, is specifically configured to: obtain the rated charging power upper limit of each charging pile in the i-th charging group, where i is an integer greater than or equal to 1 and less than or equal to n, and n is the number of charging groups in the charging station; calculate the total rated charging power upper limit of the i-th charging group based on the rated charging power upper limit; and use the total rated charging power upper limit as the power upper limit of the i-th charging group;

[0130] The (i+1)th charging group is regarded as the (i)th charging group, and the step of obtaining the upper limit value of the rated charging power of each charging pile in the (i)th charging group is returned to, until (i=n).

[0131] In one possible design, the determination module 501 is further used to receive the custom charging power upper limit value set by the user on the charging pile after detecting that the preset time threshold is exceeded; calculate the total custom charging power upper limit value of each charging pile under the target charging group; if the total custom charging power upper limit value is less than the total rated charging power upper limit value, adjust the power upper limit value of the target charging group to the total custom charging power upper limit value.

[0132] In one possible design, the charging power data of each charging pile in the target charging group includes at least: an upper limit value and a minimum value of the charging power of each charging pile, wherein the minimum value of the charging power of each charging pile is the same and is preset by the charging management device.

[0133] In one possible design, the calculation module 503 is used to calculate the actual allocated power of each charging pile based on the total power value to be allocated of the target charging group and the charging power data based on the weighted average allocation algorithm, specifically for: calculating the minimum total charging power value based on the minimum charging power value and the number of charging piles under the target charging group; calculating the total required charging power upper limit value based on the charging power upper limit value of each charging pile; judging whether the total power value to be allocated of the target charging group is less than or equal to the minimum total charging power value, or the required charging power upper limit value is less than or equal to the charging power minimum total value; if so, determine that the actual allocated power of each charging pile is the minimum charging power value; if not, determine whether the total power value to be allocated of the target charging group is greater than or equal to the total upper limit of the required charging power; if the total power value to be allocated of the target charging group is greater than or equal to the total upper limit of the required charging power, determine that the actual allocated power of each charging pile is the upper limit of the charging power of each charging pile; if the total power value to be allocated of the target charging group is less than the total upper limit of the required charging power, calculate the weight value of each charging pile, and calculate the actual allocated power of each charging pile according to the weight value.

[0134] In one possible design, the calculation module 503 is used to calculate the weight value of each charging pile if the total power value to be allocated of the target charging group is less than the total value of the required charging power upper limit, and when calculating the actual allocated power of each charging pile according to the weight value, it is specifically used to: if the total power value to be allocated of the target charging group is less than the total value of the required charging power upper limit, obtain the minimum value of the charging power upper limit values ​​of each charging pile as the upper limit minimum value; calculate a first weight value according to the total power to be allocated of the target charging group and the total value of the required charging power upper limit; if the product of the upper limit minimum value and the first weight value is greater than or equal to the charging power minimum value, the actual allocated power of each charging pile is the product of the charging power upper limit value of each charging pile and the first weight value.

[0135] In one possible design, the calculation module 503 is also used to: if the product of the minimum upper limit value and the first weight value is less than the minimum charging power value, then calculate the second weight value based on the minimum charging power value, the total power value to be allocated of the target charging group, the total required charging power upper limit value, and the number of charging piles under the target charging group; calculate the actual allocated power of each charging pile based on the charging upper limit value of each charging pile, the minimum charging power value, and the second weight value.

[0136] In one possible design, the calculation module 503 is also used to: if the total power value to be allocated of the target charging group is greater than or equal to the total required charging power upper limit value, the actual allocated power of each charging pile is the charging power upper limit value of each charging pile.

[0137] It can be seen that the charging power distribution device shown in the embodiment of the present application first determines the total power value to be allocated of the target charging group, and then obtains the charging power data of each charging pile in the target charging group. Based on the weighted average distribution algorithm, the actual distributed power of each charging pile is calculated according to the total power value to be allocated of the target charging group and the charging power data, thereby realizing the adjustment of the charging power of each charging pile. Since the actual distributed power is distributed based on the constraint condition of the total power value to be allocated of the target charging group, the risk of the charging station exceeding the power load is avoided, and the actual distributed power fully considers the charging power situation of each charging pile itself, and also introduces the user-defined charging power upper limit value reported by the user as a constraint condition, and performs reasonable distribution based on the average distribution algorithm, so that the actual distributed power in autumn is more in line with the actual situation, thereby improving the utilization efficiency of each charging pile and improving the overall power utilization efficiency of the charging station.

[0138] 6 , which is a schematic structural diagram of a charging management device provided in an embodiment of the present application, the charging management device 60 includes a processor 601, a memory 602, and a transceiver 603. The memory 602 is connected to the processor 601, for example, via a bus.

[0139] The processor 601 is configured to support the charge management device 60 in executing the corresponding functions of the method in the above method embodiment. The processor 601 can be a central processing unit (CPU), a network processor (NP), a hardware chip, or any combination thereof. The above hardware chip can be an application specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof. The above PLD can be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a generic array logic (GAL), or any combination thereof.

[0140] Memory 602 is used to store program code, etc. Memory 602 may include volatile memory (VM), such as random access memory (RAM); non-volatile memory (NVM), such as read-only memory (ROM), flash memory, hard disk drive (HDD), or solid-state drive (SSD); or a combination of the aforementioned types of memory.

[0141] The transceiver 603 is used to communicate with the charging station and exchange data with the charging station. The charging station includes at least one charging group, and each charging group includes at least two charging piles.

[0142] The processor 601 may call the program code to perform the following operations:

[0143] Determining a total power value to be allocated for a target charging group, where the target charging group is a charging group to which no charging power is allocated or to which charging power needs to be adjusted;

[0144] Obtaining charging power data of each charging pile in the target charging group;

[0145] Based on a weighted average allocation algorithm, the actual allocated power of each charging pile is calculated according to the total power value to be allocated of the target charging group and the charging power data.

[0146] An embodiment of the present application further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, wherein the computer program includes program instructions, and when the program instructions are executed by a computer, the computer executes the method as described in the above embodiment.

[0147] Those skilled in the art will appreciate that all or part of the processes in the above-described method embodiments can be implemented by instructing related hardware through a computer program. The program can be stored in a computer-readable storage medium, and when executed, the program can include the processes in the above-described method embodiments. The storage medium can be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

[0148] The above disclosure is only a preferred embodiment of the present application, and certainly cannot be used to limit the scope of rights of the present application. Therefore, equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A charging power distribution method, characterized in that: Applied to a charging management device, the charging management device is used to manage a charging station, the charging station includes at least one charging group, each charging group includes at least two charging piles, the method includes: Determine a total power value to be allocated of a target charging group, where the target charging group is a charging group to which charging power is not allocated or to which charging power needs to be adjusted; Obtaining charging power data of each charging pile in the target charging group; Based on a weighted average allocation algorithm, the actual allocated power of each charging pile is calculated according to the total power value to be allocated of the target charging group and the charging power data.

2. The method according to claim 1, characterized in that The determining of the total power value to be allocated for the target charging group includes: Obtaining a total upper limit value of power of the charging station; Calculate the upper limit of charging power for each charging group; The total power value to be allocated of the target charging group is calculated according to the power upper limits of the respective charging groups and the total power upper limits of the charging stations.

3. The method according to claim 2, characterized in that The calculating the total power value to be allocated of the target charging group according to the power upper limit value of each charging group and the total power upper limit value of the charging station includes: If the sum of the power upper limits of the charging groups is less than or equal to the total power upper limit of the charging station, the total power value to be allocated to the target charging group is the power upper limit of the target charging group; If the total power upper limit of each charging group is greater than the total power upper limit of the charging station, the total power value to be allocated of the target charging group is calculated based on the weighted average allocation algorithm according to the total power upper limit of the charging station and the power upper limits of each charging group.

4. The method according to claim 2 or 3, characterized in that The calculating the upper limit value of the charging power of each charging group includes: Obtain the rated charging power upper limit value of each charging pile under the i-th charging group, where i is an integer greater than or equal to 1 and less than or equal to n, and n is the number of charging groups under the charging station; Calculating a total value of the rated charging power upper limit of the i-th charging group according to the rated charging power upper limit value; The total value of the rated charging power upper limit is used as the power upper limit value of the i-th charging group; The i+1th charging group is taken as the ith charging group, and the step of obtaining the upper limit value of the rated charging power of each charging pile in the ith charging group is returned to be executed until i=n.

5. The method according to any one of claims 2 to 4, characterized in that: The method further comprises: After detecting that a preset time threshold has been exceeded, receiving a user-defined charging power upper limit value set by the user on the charging pile; Calculate the total value of the custom charging power upper limit of each charging pile under the target charging group; If the total value of the customized charging power upper limits is less than the total value of the rated charging power upper limits, the power upper limit value of the target charging group is adjusted to the total value of the customized charging power upper limits.

6. The method according to claim 1, characterized in that The charging power data of each charging pile in the target charging group includes at least: an upper limit value and a minimum value of the charging power of each charging pile, wherein the minimum value of the charging power of each charging pile is the same and is preset by the charging management device.

7. The method according to claim 6, characterized in that The weighted average allocation algorithm is used to calculate the actual allocated power of each charging pile according to the total power value to be allocated of the target charging group and the charging power data, including: Calculate the minimum total charging power value according to the minimum charging power value and the number of charging piles in the target charging group; Calculate the total required charging power upper limit value according to the charging power upper limit values ​​of each charging pile; Determine whether the total power value to be allocated of the target charging group is less than or equal to the minimum total charging power value, or the required charging power upper limit is less than or equal to the minimum total charging power value; If yes, then determine that the actual allocated power of each charging pile is the minimum charging power; If not, determining whether the total power value to be allocated of the target charging group is greater than or equal to the total upper limit value of the required charging power; If the total power value to be allocated of the target charging group is greater than or equal to the total upper limit value of the required charging power, then the actual allocated power of each charging pile is determined to be the upper limit value of the charging power of each charging pile; If the total power value to be allocated of the target charging group is less than the total upper limit value of the required charging power, the weight value of each charging pile is calculated, and the actual allocated power of each charging pile is calculated according to the weight value.

8. The method according to claim 7, characterized in that If the total power value to be allocated of the target charging group is less than the total upper limit of the required charging power, the weight value of each charging pile is calculated, and the actual allocated power of each charging pile is calculated according to the weight value, including: If the total power value to be allocated of the target charging group is less than the total upper limit value of the required charging power, the minimum value of the upper limit values ​​of the charging power of each charging pile is obtained as the upper limit minimum value; Calculating a first weight value according to the total power to be allocated of the target charging group and the total value of the upper limit of the required charging power; If the product of the minimum upper limit value and the first weight value is greater than or equal to the minimum charging power value, the actual allocated power of each charging pile is the product of the charging power upper limit value of each charging pile and the first weight value.

9. The method according to claim 8, characterized in that The method further comprises: If the product of the minimum upper limit value and the first weight value is less than the minimum charging power value, the second weight value is calculated according to the minimum charging power value, the total power value to be allocated of the target charging group, the total upper limit value of the required charging power, and the number of charging piles under the target charging group; The actual allocated power of each charging pile is calculated according to the charging upper limit value of each charging pile, the minimum charging power value, and the second weight value.

10. The method according to claim 7, characterized in that The method further comprises: If the total power value to be allocated of the target charging group is greater than or equal to the total upper limit value of the required charging power, the actual allocated power of each charging pile is the upper limit value of the charging power of each charging pile.

11. A charging power distribution device, characterized in that: Applied to a charging management device, the charging management device is used to manage a charging station, the charging station includes at least one charging group, each charging group includes at least two charging piles, the device includes: A determination module, used to determine a total power value to be allocated of a target charging group, wherein the target charging group is a charging group to which charging power is not allocated or to which charging power needs to be adjusted; An acquisition module, used to acquire charging power data of each charging pile in the target charging group; A calculation module is used to calculate the target charging group based on the weighted average allocation algorithm according to the target charging group to be allocated. The total power value and the charging power data are used to calculate the actual allocated power of each charging pile.

12. A charging management device, characterized in that: It includes a memory, a processor and a transceiver, wherein the memory and the transceiver are connected to the processor, the transceiver is used to exchange data with the charging station, the processor is used to execute one or more computer programs stored in the memory, and when the processor executes the one or more computer programs, the charging management device implements the method described in any one of claims 1-10.

13. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, wherein the computer program includes program instructions, and when the program instructions are executed by a processor, the processor is caused to perform the method according to any one of claims 1 to 10.

14. A charging power distribution system, characterized in that: It comprises a charging management device and a charging station, wherein the charging station comprises at least one charging group, each charging group comprises at least two charging piles, and the charging management device is used to execute the method as described in any one of claims 1-10.

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