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

Abstract

The application provides a charging power distribution method and device, a charging management device, a system and a storage medium. The method is applied to the charging management device, the charging management device is used for managing a charging station, the charging station includes at least one charging group, each charging group includes at least two charging piles, and the method includes the following steps: determining a total power value to be distributed of a target charging group, the target charging group being a charging group that has not been distributed with charging power or needs to adjust charging power; obtaining charging power data of each charging pile in the target charging group; and calculating actual distribution power of each charging pile based on a weighted average distribution algorithm according to the total power value to be distributed of the target charging group and the charging power data. The technical solution can improve the power utilization efficiency of the charging station.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of intelligent charging, in particular to a charging power distribution method and device, a charging management equipment, a system and a storage medium. BACKGROUND

[0002] As a facility for providing charging services for electric vehicles, a charging station usually has multiple charging piles installed therein to meet the needs of multiple electric vehicles charging at the same time. At present, the charging piles usually charge electric vehicles according to the upper limit of the power of the charging pile, which leads to the risk of overloading of the charging station when the scale of the charging station is large and multiple charging piles are used at the same time. When this situation occurs, the upper limit charging power of the charging station is usually evenly distributed according to the number of charging piles in the station, but this method can easily lead to low power utilization efficiency of some charging piles, thereby reducing the power utilization efficiency of the entire charging station. SUMMARY

[0003] The present application provides a charging power distribution method and device, a charging management equipment, a system and a storage medium to solve the technical problem of low power utilization efficiency of the entire charging station caused by evenly distributing the upper limit charging power of the charging station according to the number of charging piles in the station in the prior art.

[0004] In a first aspect, a charging power distribution method is provided, which is applied to a charging management equipment for managing a charging station, the charging station including at least one charging group, each charging group including at least two charging piles, the method including: determining a total power value to be distributed of a target charging group, the target charging group being a charging group that has not distributed charging power or needs to adjust charging power; obtaining charging power data of each charging pile in the target charging group; and calculating actual distribution power of each charging pile based on a weighted average distribution algorithm according to the total power value to be distributed of the target charging group and the charging power data.

[0005] In combination with the first aspect, in a possible implementation manner, the determination of the total power value to be distributed of the target charging group includes: obtaining a total upper limit value of power of the charging station; calculating a charging power upper limit value of each charging group; and calculating the total power value to be distributed of the target charging group according to the charging power upper limit value of each charging group and the total upper limit value of power of the charging station.

[0006] With reference to the first aspect, in a possible implementation manner, the calculating the total power value to be allocated to the target charging group according to the power upper limit values of the charging groups and the total power upper limit value of the charging station comprises: if the sum of the power upper limit values of the charging groups is less than or equal to the total power upper limit value of the charging station, the total power value to be allocated to the target charging group is the power upper limit value of the target charging group; if the total power upper limit value of the charging groups is greater than the total power upper limit value of the charging station, the total power value to be allocated to 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 charging groups based on the weighted average allocation algorithm.

[0007] With reference to the first aspect, in a possible implementation manner, the calculating the charging power upper limit value of each charging group comprises: acquiring a rated charging power upper limit value of each charging pile in an i th charging group, wherein 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 rated charging power upper limit total value of the i th charging group according to the rated charging power upper limit values; taking the rated charging power upper limit total value as the power upper limit value of the i th charging group; taking an i+1 th charging group as the i th charging group, and returning to execute the step of acquiring the rated charging power upper limit value of each charging pile in the i th charging group until i=n.

[0008] With reference to the first aspect, in a possible implementation manner, the method further comprises: 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 a custom charging power upper limit total value of each charging pile in the target charging group; and if the custom charging power upper limit total value is less than the rated charging power upper limit total value, adjusting the power upper limit value of the target charging group to be the custom charging power upper limit total value.

[0009] With reference to the first aspect, in a possible implementation manner, the charging power data of each charging pile in the target charging group at least comprises a charging power upper limit value and a charging power minimum value of each charging pile, wherein the charging power minimum values of each charging pile are the same and are preset by the charging management device.

[0010] In a possible implementation manner of the first aspect, in the case that the total power value to be allocated to the target charging group is less than or equal to the minimum total charging power value, the actual allocated power of each charging pile is determined as the minimum charging power value of each charging pile. In the case that the total power value to be allocated to the target charging group is greater than the minimum total charging power value, the upper limit total charging power value is calculated according to the upper limit charging power value of each charging pile. In the case that the total power value to be allocated to the target charging group is greater than or equal to the upper limit total charging power value, the actual allocated power of each charging pile is determined as the upper limit charging power value of each charging pile. In the case that the total power value to be allocated to the target charging group is less than the upper limit total charging power value, 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.

[0011] In a possible implementation manner of the first aspect, in the case that the total power value to be allocated to the target charging group is less than the upper limit total charging power value, the actual allocated power of each charging pile is calculated according to the weight value, including: in the case that the total power value to be allocated to the target charging group is less than the upper limit total charging power value, the minimum value of the upper limit charging power value of each charging pile is obtained as an upper limit minimum value; a first weight value is calculated according to the total power value to be allocated to the target charging group and the upper limit total charging power value; and in the case that the product of the upper limit minimum 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 upper limit charging power value of each charging pile and the first weight value.

[0012] In a possible implementation manner of the first aspect, the method further includes: in the case that the product of the upper limit minimum value and the first weight value is less than the minimum charging power value, a second weight value is calculated according to the minimum charging power value, the total power value to be allocated to the target charging group, the upper limit total charging power value, and the number of charging piles under the target charging group; and the actual allocated power of each charging pile is calculated according to the upper limit charging power value of each charging pile, the minimum charging power value, and the second weight value.

[0013] With reference to the first aspect, in a possible implementation manner, the method further includes: if the total power value to be allocated of the target charging group is greater than or equal to the upper limit total value of the required charging power, the actual allocated power of each charging pile is the upper limit charging power value of the respective charging pile.

[0014] In a second aspect, a charging power allocation apparatus is provided, which is applied to a charging management device, the charging management device being used for managing a charging station, the charging station including at least one charging group, each charging group including at least two charging piles, the apparatus including: a determination module configured to determine a total power value to be allocated of a target charging group, the target charging group being a charging group that has not been allocated charging power or needs to adjust charging power; an acquisition module configured to acquire charging power data of each charging pile in the target charging group; and a calculation module configured to calculate 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.

[0015] In a third aspect, a charging management device is provided, including a memory, a processor and a transceiver, the memory and the transceiver being connected to the processor, the transceiver being configured to exchange data with a charging station, the processor being configured to execute one or more computer programs stored in the memory, and the processor, when executing the one or more computer programs, causes the charging management device to implement the method according to the first aspect.

[0016] In a fourth aspect, a computer-readable storage medium is provided, which stores a computer program, the computer program including program instructions, and the program instructions, when executed by a processor, cause the processor to execute the charging power allocation method according to the first aspect.

[0017] In a fifth aspect, a charging power allocation system is provided, including a charging management device and a charging station, the charging station including at least one charging group, each charging group including at least two charging piles, and the charging management device being configured to execute the method according to the first aspect.

[0018] The application can achieve the following technical effects: the charging management device 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 weighted average allocation algorithm 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 exceeding the power load of the charging station is avoided, and the actual allocated power fully considers the charging power conditions of each charging pile, is reasonably allocated based on the average allocation algorithm, improves the use efficiency of each charging pile, and improves the overall power utilization efficiency of the charging station. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 An architecture schematic diagram of a charging power allocation system provided by an embodiment of the application;

[0020] Figure 2 A flowchart of a charging power allocation method provided by an embodiment of the application;

[0021] Figure 3 A technical flowchart of a weighted average allocation algorithm provided by an embodiment of the application;

[0022] Figure 4 A flowchart of another charging power allocation method provided by an embodiment of the application;

[0023] Figure 5 A structure schematic diagram of a charging power allocation device provided by an embodiment of the application;

[0024] Figure 6 A structure schematic diagram of a charging management device provided by an embodiment of the application. DETAILED DESCRIPTION

[0025] In order to make the objectives, technical solutions and advantages of the present application clearer, further detailed descriptions will be given to the present application in combination with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of protection of the present application.

[0026] It should be noted that the various features of the embodiments of the present application can be combined with each other, and are within the scope of protection of the present application, if there is no conflict. In addition, although the functional modules are divided in the device schematic diagram, and the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in a manner different from the module division in the device or the order in the flowchart. Furthermore, the "first", "second", "third" and the like used in the present application do not limit the data and execution order, but only distinguish the same items or similar items with basically the same function and effect.

[0027] To describe the present application in more detail, first introduce a charging power distribution system involved in the present application. The charging power distribution system includes a charging management device and a charging station, and 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 A charging power distribution system 10 provided by an embodiment of the present application 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 the number of charging groups can be any number in other embodiments), the first charging group 1021 includes charging pile u, charging pile v, charging pile w, and the charging group b includes charging pile x, charging pile y, and charging pile z.

[0028] The charging management device 101 is used to manage the charging station 102, and the charging management device 101 is an intelligent management device that can integrate electric vehicle information being charged, power grid load information, and charging pile charging information. The charging management device 101 can make charging power distribution decisions according to real-time data, and send corresponding decision instructions to each charging pile under the charging pile 102 for execution.

[0029] In some possible embodiments, the charging management device 101 can be composed of one or more workstations or servers, and can realize charging pile monitoring and data collection, query, and data processing and analysis of the entire charging station.

[0030] The charging station 102 is a facility for providing charging services for electric vehicles, and can be usually located in a city, an expressway, or a commercial area. The charging station 102 includes two charging groups, namely the first charging group 1021 and the second charging group 1022. In some possible embodiments, the allocation of the charging group can be completed by the charging management device 101 or the charging station 102, for example, the charging management device 101 can divide the charging piles using the same power supply point into a charging group.

[0031] Further, each charging group can include at least two charging piles, the first charging group 1021 includes charging pile u, charging pile v, and charging pile w, and the charging group b includes charging pile x, charging pile y, and charging pile z. The charging pile is a bridge between the electric vehicle and the power supply, which is usually composed of a metal shell, a charging plug, a controller, a communication module, and the like. The charging pile can provide charging outputs of different power levels, but is limited by the device itself, and usually has a charging power upper limit value and a charging start power value. The charging start power refers to the power at which the charging pile can be started to supply power to the electric vehicle.

[0032] It can be understood that the above Figure 1 The composition of the charging station 102 and the charging management device 101 shown is only an example. In actual cases, devices or modules can be integrated, adjusted, or increased as needed, for example, the charging station 102 can also include a power supply system that mainly provides power for charging devices, which can be composed of primary devices (switches, transformers, lines, etc.) and secondary devices (including detection, protection, control devices, etc.), source filtering devices, etc. The present application does not make any limitation thereto.

[0033] Based on the above charging power distribution system, the charging power distribution method provided by the present application can be realized.

[0034] Please refer to Figure 2 A flowchart of a charging power distribution method provided by an embodiment of the present application is shown in Figure 2 The charging power distribution method shown can be executed by the charging management device, and the method can include:

[0035] S21, obtaining a total power upper limit value of the charging station.

[0036] It should be noted that the total power upper limit of the charging station is usually determined by factors such as the design of the charging station, the device configuration, and the power supply network capacity. In general, it is fixed and unchangeable. With the upgrading or modification of the charging station, the total power upper limit value can be adjusted. In some possible embodiments, the total power upper limit value can also be changed according to the power grid capacity of the area where the charging station is located.

[0037] S22, calculating a charging power upper limit value of each charging group.

[0038] As a possible embodiment, the charging power upper limit value of each charging group can be the minimum value of the user-set custom charging power upper limit value and the sum of the power upper limits of all charging piles in the charging group.

[0039] As another possible implementation, the charging power upper limit value of each charging group can also be the sum of the charging power upper limit values of all charging piles in the charging group when the preset time threshold is not exceeded, and the minimum of the user-set custom charging power upper limit value and the sum of the charging power upper limit values of all charging piles in the charging group when the preset time threshold is exceeded.

[0040] S23, calling a weighted average allocation algorithm to calculate the actual allocation power of each charging group.

[0041] As a possible implementation, the charging management device can combine the charging power upper limit values of each charging group into a unit dictionary, and call a weighted average allocation algorithm to calculate the actual allocation power of each charging group according to the data in the unit dictionary and the total charging power upper limit value of the charging station.

[0042] As another possible implementation, when only one charging group needs to be allocated charging power, the actual allocation power of the charging group can be the minimum of the rated charging power upper limit value of the charging group and the charging power upper limit value of the charging station, and steps S24 and S25 are executed.

[0043] It should be noted that the actual allocation power of each charging group solved in this step is the total power value to be allocated for each charging group.

[0044] S24, calculating the charging power upper limit value of each charging pile under each charging group.

[0045] As a possible implementation, the charging power upper limit value of each charging pile can be determined according to the rated charging power upper limit value of the charging pile itself and the charging power upper limit value of the charging vehicle, or according to 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 actual charging.

[0046] For example, within the preset time threshold of charging (e.g. 30 minutes from starting charging to charging full), the charging power upper limit value of each charging pile can be the minimum of the rated charging power upper limit value of the charging pile itself and the charging power upper limit value of the charging vehicle plus a certain threshold, and after exceeding the preset time threshold (e.g. more than 30 minutes of charging time), the charging power upper limit value of each charging pile can be the minimum of 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 actual charging plus a certain threshold. The threshold can be a fixed value, or can be set in a certain proportion of the minimum value, such as 10% of the minimum value. Increasing the threshold can to some extent avoid the problem of current loss.

[0047] S25, call the weighted average allocation algorithm to calculate the actual allocation power of each charging pile for each charging group.

[0048] As a feasible implementation, the charging management device can form a dictionary of charging power upper limit values of each charging pile according to charging groups, each charging group performs charging power allocation according to the actual allocation power of the charging group calculated in the foregoing S23 step, and the weighted average allocation algorithm is called to calculate the actual allocation power of each pile for each charging group.

[0049] In some embodiments, after the actual allocation power of each charging pile is calculated, the charging management device can control the charging pile to charge according to the corresponding actual allocation power. When the charging time exceeds the preset time threshold, the user's actual reported custom charging power upper limit value can be adjusted, for example, the charging management unit can add a monitoring module for the actual allocation power of the charging pile and the user's power report, if it is monitored that the user's actual reported custom charging power upper limit value is less than the actual allocation power or the actual allocation power + a certain power threshold, the S24 step is re-executed, the charging power upper limit value of the charging pile is adjusted according to the custom charging power upper limit value, if the charging power upper limit value is less than the value, the adjustment is not performed, otherwise, the maximum adjustment is the custom charging power upper limit value, and after the adjustment, the S25 step is re-executed, and the weighted average allocation algorithm is called to calculate the power of each charging pile.

[0050] The weighted average allocation algorithm involved in the present application will be introduced below. In the present application, the weighted average allocation algorithm can be used to calculate the actual allocation power of each charging group, and can also be used to calculate the actual allocation power of each charging pile under each charging group. Please refer to Figure 3 The technical flow chart of the weighted average allocation algorithm provided by the embodiment of the present application is as shown in Figure 3 The algorithm shown in the figure takes the actual allocation power of each charging pile under each charging group as an example, and can specifically include:

[0051] S301, obtain the power total upper limit value of the charging group = total, the number of charging piles to be allocated under the charging group = n, and the charging power minimum value = min-c.

[0052] It should be noted that the power total upper limit value total refers to the total power to be allocated of the charging group, which can be calculated according to the power upper limit value of the entire charging station. The charging power minimum value min-c is the minimum power required to be allocated to each charging pile in the allocation process. The min-c of each charging pile can be the same and is a preset value.

[0053] S302, acquire the charging power upper limit value of the n charging piles to be allocated, and record the charging power upper limit value of the i-th charging pile to be allocated as max-i, and take the minimum value of the n charging power upper limit values as min-v.

[0054] It should be noted that the charging power upper limit value max-i represents the maximum power that the charging pile i can be allocated.

[0055] S303, calculate the required power upper limit total value of the n charging piles as all-need.

[0056] It should be noted that the required power upper limit total value all-need is the sum of the charging power upper limit values of the n charging piles.

[0057] In an embodiment, the charging power upper limit value of the charging pile can be determined according to the rated charging power upper limit value of the charging pile itself and the charging power upper limit value of the charging vehicle, for example, taking the minimum value of the above two values, or can be determined according to the charging power upper limit value of the charging pile itself, the charging power upper limit value of the charging vehicle, and the user's self-defined charging power upper limit value reported in the actual charging process, for example, taking the minimum value of the above three values.

[0058] S304, judge whether total≤min-c*n or all-need≤min-c*n.

[0059] It should be noted that min-c*n represents the power value required for the n charging piles to be allocated at the minimum charging power.

[0060] S305, if yes, determine the actual allocation power of each charging pile as min-c.

[0061] In this step, if total or all-need does not satisfy the average allocation at the minimum charging power, the actual allocation power of each charging pile is set to min-c.

[0062] S306, judge whether total≥all-need.

[0063] S307, if yes, determine the actual allocation power of each charging pile as max-i.

[0064] In this step, if total≥all-need, it can be considered that the total power value to be allocated satisfies the allocation of the n charging piles at their own charging power upper limit values, at this time, the actual allocation power of each charging pile can be determined as max-i.

[0065] If total≤all-need, it can be considered that the total power value to be allocated does not meet the condition that the n charging piles are allocated with the upper limit value of the charging power of each charging pile, and the steps S308-S310 can be further executed.

[0066] S308, if not, whether min-v*total\all-need≥min-c is judged.

[0067] It should be noted that the purpose of this step is to determine whether each charging pile can meet the weighted allocation at least according to the minimum charging power.

[0068] S309, if yes, ms=total\all-need is calculated, and the actual allocated power of the charging pile i is max-i*ms.

[0069] In this step, if the condition shown in S308 is met, the weighted allocation can be performed according to the upper limit value of the rated charging power of each charging pile, and the weight value is the value of ms solved in this step.

[0070] S310, if not, ms=(total-min-c*n)*(all-need-min-c*n) is calculated, and the actual allocated power of the charging pile i is (max-i-min-c)*ms+min-c.

[0071] In this step, if the condition shown in S308 is not met, the weighted allocation can be performed on the remaining charging power to be allocated after the minimum power min-c is allocated first, and the weight value is the value of ms solved in this step.

[0072] It can be understood that the calculation process of the above-mentioned weighted average allocation algorithm can also be applied to calculating the actual allocated power of each charging group, which will not be described in detail here.

[0073] Based on the above-mentioned weighted average allocation algorithm, the suitable actual allocated power of each charging pile can be solved between the preset minimum power limit and the upper limit value of the power, so that the charging power of the charging pile is reasonably allocated, and the utilization efficiency of the power of the station is improved.

[0074] Please refer to Figure 4 Another charging power allocation method provided by the embodiment of the application can include the following steps:

[0075] S401, the charging management device determines the total power value to be allocated of the target charging group.

[0076] The target charging group is a charging group that has not been allocated charging power or needs to adjust the charging power.

[0077] In one embodiment, when there is only one charging group in the charging station, if the 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 upper limit of the rated charging power of the target charging group and the upper limit of the charging power of the charging station is taken as the total power value to be allocated.

[0078] In one embodiment, when there are two or more charging groups in the charging station that need to have the charging power allocated or adjusted, the S401 step can include:

[0079] S4011, obtaining the total upper limit value of the power of the charging station.

[0080] It should be noted that the total upper limit of the power of the charging station is generally determined by factors such as the design, equipment configuration, and power supply network capacity of the charging station, and is generally fixed and unchangeable. The total upper limit of the power of the charging station can be adjusted as the charging station is upgraded or modified. In some possible embodiments, the total upper limit of the power of the charging station can also be changed according to the power grid capacity of the area where the charging station is located.

[0081] S4012, calculating the charging power upper limit value of each charging group.

[0082] As one possible implementation, the charging power upper limit value of each charging group can be determined according to the charging power upper limit values of all charging piles in the charging group.

[0083] For example, the S4012 step includes: obtaining the rated charging power upper limit value 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 under the charging station; calculating the total upper limit value of the rated charging power of the i-th charging group according to the rated charging power upper limit values; taking the total upper limit value of the rated charging power as the power upper limit value of the i-th charging group; taking the i+1-th charging group as the i-th charging group, and returning to execute the steps of obtaining the rated charging power upper limit value of each charging pile in the i-th charging group and the user-set custom charging power upper limit value until i=n.

[0084] As another possible implementation, the charging power upper limit value of each charging group can also be determined according to the charging power upper limit values of all charging piles in the charging group and the user-set custom charging power upper limit value.

[0085] In one embodiment, the method further includes: after detecting that a preset time threshold has been 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.

[0086] For example, after the preset time threshold is exceeded, the charging management device can obtain the user-set custom charging power limit value of each charging pile under the i-th charging group, calculate the total custom charging power limit value of the i-th charging group based on the custom charging power limit value, compare the total custom charging power limit value with the total rated charging power limit value, and take the minimum value as the power limit value of the i-th charging group; take the (i+1)-th charging group as the i-th charging group, and return to the step of obtaining the user-set custom charging power limit value of each charging pile under the i-th charging group, until i = n.

[0087] S4013. Calculate the total power value to be allocated for the target charging group based on the power upper limit of each charging group and the total power upper limit of the charging station.

[0088] In one embodiment, step S4013 includes: if the sum of the power upper limits of the various charging groups is less than or equal to the total power upper limit of the charging station, then the total power 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 the various charging groups is greater than the total power upper limit of the charging station, then based on the weighted average allocation algorithm, the total power to be allocated to the target charging group is calculated according to the total power upper limit of the charging station and the power upper limits of the various charging groups.

[0089] For details on the weighted average allocation algorithm, please refer to [link / reference]. Figure 3 The steps shown are the same as those shown. Figure 3 The steps shown differ in that the data obtained from charging piles is replaced with data from charging groups, and the data obtained from charging groups is replaced with data from charging stations. For example, when calculating the total power to be allocated for a target charging group, the total power limit of the charging station = total, the number of charging groups to be allocated under the charging station = n, and the minimum charging power = min - c * n. The specific solution process is the same as... Figure 3 Similarly, I will not elaborate further here.

[0090] S402, The charging management device acquires the charging power data of each charging pile in the target charging group.

[0091] In an embodiment, the charging power data of each charging pile in the target charging group at least includes: an upper limit value of charging power of each charging pile and a minimum value of charging power, wherein the minimum value of charging power of each charging pile is the same and is preset by the charging management device.

[0092] As a feasible implementation, the upper limit value of charging power of each charging pile can be determined according to the upper limit value of rated charging power of the charging pile itself, the upper limit value of charging power of the charging vehicle, or determined according to the upper limit value of charging power of the charging pile itself, the upper limit value of charging power of the charging vehicle, and the custom upper limit value of charging power reported by the user in the actual charging process.

[0093] For example, in a preset time range of charging (for example, 30 minutes from starting charging to charging full), the upper limit value of charging power of each charging pile can take the minimum value of the upper limit value of rated charging power of the charging pile itself and the upper limit value of charging power of the charging vehicle and add a certain threshold value, and after exceeding the preset time range (for example, more than 30 minutes of charging time), the upper limit value of charging power of each charging pile can take the minimum value of the upper limit value of charging power of the charging pile itself, the upper limit value of charging power of the charging vehicle, and the custom upper limit value of charging power reported by the user in the actual charging process and add a certain threshold value. The threshold value can be a fixed value, or can be set in a certain proportion of the minimum value, for example, 10% of the minimum value. Increasing the threshold value can to some extent avoid the problem of current loss.

[0094] S403, the charging management device calculates 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 based on a weighted average allocation algorithm.

[0095] In an embodiment, the step S403 includes:

[0096] S4031, calculating a minimum total value of charging power according to the minimum value of charging power and the number of charging piles under the target charging group.

[0097] In this step, the product of the minimum value of charging power and the number of charging piles under the target charging group can be taken as the required minimum total value of charging power, for example, assuming that the minimum value of charging power min-c=6 and the number of charging piles=3, then the minimum total value of charging power min-all=18.

[0098] S4032, calculating a required upper limit total value of charging power according to the upper limit value of charging power of each charging pile.

[0099] In this step, the upper limit value of charging power of each charging pile obtained in step S402 can be summed to obtain the required upper limit total value of charging power.

[0100] S4033, determining 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 upper limit of the required charging power is less than or equal to the minimum total charging power value.

[0101] In this step, the charging management device first compares the minimum total charging power value with the upper limit total value of the required charging power. If the minimum total charging power value is greater than the upper limit total value of the required 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 charging power value is less than or equal to the upper limit total value of the required charging power, the following S4034 and subsequent steps can be executed.

[0102] S4033, if yes, determining the actual allocated power of each charging pile as the minimum charging power value.

[0103] In this step, since the minimum total charging power value is greater than the upper limit total value of the required charging power, it does not meet the requirement of allocating the charging power according to the minimum charging power value. However, since the minimum starting power of each charging pile needs to be the minimum charging power value, the charging management device still determines the actual allocated power of each charging pile as the minimum charging power value.

[0104] In some possible implementations, when the actual allocated power of each charging pile is the minimum charging power value, the charging management device can start the charging pile with high priority according to the charging priority of each charging pile. After the charging pile with high priority is used up, the charging pile that has not been started is started according to the charging priority.

[0105] S4034, if no, determining whether the total power value to be allocated of the target charging group is greater than or equal to the upper limit total value of the required charging power.

[0106] S4035, if the total power value to be allocated of the target charging group is greater than or equal to the upper limit total value of the required charging power, determining the actual allocated power of each charging pile as the upper limit charging power value of each charging pile.

[0107] In this step, if the total power value to be allocated of the target charging group is greater than or equal to the upper limit total value of the required charging power, it can be considered that the total power value to be allocated meets the requirement of allocating n charging piles at their respective upper limit rated charging power values. At this time, the actual allocated power of each charging pile can be determined.

[0108] S4036, if the total power value to be allocated of the target charging group is less than the upper limit total value of the required charging power, calculating the weight value of each charging pile and calculating the actual allocated power of each charging pile according to the weight value.

[0109] If the total power value to be allocated of the target charging group is less than the total value of the required upper limit charging power, it can be considered that the total power value to be allocated does not meet the condition that each charging pile is allocated with the upper limit charging power of itself, and the weight of each charging pile can be calculated and allocated according to the weight.

[0110] As a feasible implementation, the weight value can be a first weight value when each charging pile is allocated with the upper limit charging power of itself, or a second weight value when each charging pile is allocated with the minimum charging power.

[0111] In one embodiment, the S4036 step includes: if the total power value to be allocated of the target charging group is less than the total value of the required upper limit charging power, obtaining the minimum value in the upper limit charging power of each charging pile as an upper limit minimum value; calculating a first weight value according to the total power value to be allocated of the target charging group and the total value of the required upper limit charging power; and if the product of the upper limit minimum value 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 charging power of each charging pile and the first weight value.

[0112] For example, as shown in the S308 and S309 steps in the method shown in Figure 3 The charging management device can determine whether each charging pile can meet the condition of being allocated with the minimum charging power according to the weight, and if yes, the value obtained by dividing the total power value to be allocated of the target charging group by the total value of the required upper limit charging power is taken as the first weight value, and the actual allocated power of each charging pile is the product of the first weight value and the upper limit charging power of itself.

[0113] In one embodiment, if the product of the upper limit minimum value and the first weight value is less than the minimum charging power, a second weight value is calculated according to the minimum charging power, the total power value to be allocated of the target charging group, the total value of the required upper limit charging power, and the number of charging piles under the target charging group.

[0114] The actual allocated power of each charging pile is calculated according to the upper limit charging power of each charging pile, the minimum charging power, and the second weight value.

[0115] For example, as shown in the S308 and S309 steps in the method shown in Figure 3As shown in step S310, the charging management device can first allocate the 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 under the target charging group.

[0116] At this time, the actual power allocation of each charging pile satisfies Pi=(max-i-min-c)*ms+min-c, where Pi represents the actual power allocation of charging pile i, and max-i represents the upper limit of the charging power of charging pile i.

[0117] In one embodiment, if the total power to be allocated to the target charging group is greater than or equal to the total required charging power limit, then the actual allocated power of each charging pile is the charging power limit of each charging pile.

[0118] For example, such as Figure 3 As shown in step S07, 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 limit, it can be considered that the total power value to be allocated satisfies the requirement that each charging pile be allocated according to its own charging power limit. At this time, the actual allocated power of each charging pile can be determined to be its own charging power limit.

[0119] As can be seen, through the charging power allocation method provided in this embodiment of the invention, the charging management device first determines the total power value to be allocated for 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 weighted average allocation algorithm, according to the total power value to be allocated for the target charging group and the charging power data. This realizes the adjustment of the charging power of each charging pile. Since the actual allocated power is allocated based on the constraint of the total power value to be allocated for the target charging group, the risk of the charging station exceeding its power load is avoided. Moreover, the actual allocated power fully considers the charging power of each charging pile itself, and also introduces the user-reported custom charging power upper limit as a constraint. Based on the average allocation algorithm, a reasonable allocation is made, making the actual allocated power more in line with the actual situation, improving the utilization efficiency of each charging pile, and improving the overall power utilization efficiency of the charging station.

[0120] The method of this application has been described above; the apparatus of this application will be described below.

[0121] See Figure 5 , Figure 5The application provides a charging power distribution device, which is applied to a charging management equipment, and is used for managing a charging station. The charging station comprises at least one charging group, and each charging group comprises at least two charging piles. The charging power distribution device 50 comprises:

[0122] A determination module 501 is configured to determine a total power value to be distributed of a target charging group, wherein the target charging group is a charging group which has not been distributed with charging power or needs to be adjusted in charging power.

[0123] An acquisition module 502 is configured to acquire charging power data of each charging pile in the target charging group.

[0124] A calculation module 503 is configured to calculate actual distribution power of each charging pile based on a weighted average distribution algorithm according to the total power value to be distributed of the target charging group and the charging power data.

[0125] In a possible design, when the determination module 501 is used for determining the total power value to be distributed of the target charging group, the determination module 501 is specifically configured to: acquire a total upper limit value of power of the charging station; calculate charging power upper limit values of each charging group; and calculate the total power value to be distributed of the target charging group according to the charging power upper limit values of each charging group and the total upper limit value of power of the charging station.

[0126] In a possible design, when the determination module 501 is used for calculating the total power value to be distributed of the target charging group according to the charging power upper limit values of each charging group and the total upper limit value of power of the charging station, the determination module 501 is specifically configured to: if a sum of the charging power upper limit values of each charging group is less than or equal to the total upper limit value of power of the charging station, the total power value to be distributed of the target charging group is the charging power upper limit value of the target charging group; and if the sum of the charging power upper limit values of each charging group is greater than the total upper limit value of power of the charging station, the determination module 501 is configured to calculate the total power value to be distributed of the target charging group according to the total upper limit value of power of the charging station and the charging power upper limit values of each charging group based on the weighted average distribution algorithm.

[0127] In a possible design, the determining module 501 is configured to, when calculating the upper limit of charging power of each charging group, specifically configured to: obtain the upper limit of rated charging power 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 upper limit of rated charging power total value of the i th charging group according to the upper limit of rated charging power; take the upper limit of rated charging power total value as the upper limit of power 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 upper limit of rated charging power of each charging pile in the i th charging group until i = n.

[0128] In a possible design, the determining module 501 is further configured to, after detecting that a preset time threshold is exceeded, receive a custom upper limit of charging power set by a user on the charging pile; calculate a custom upper limit of charging power total value of each charging pile in the target charging group; and if the custom upper limit of charging power total value is less than the upper limit of rated charging power total value, adjust the upper limit of power of the target charging group to the custom upper limit of charging power total value.

[0129] In a possible design, the charging power data of each charging pile in the target charging group at least includes the upper limit of charging power and the minimum charging power of each charging pile, where the minimum charging power of each charging pile is the same and is preset by the charging management device.

[0130] In a possible design, the calculating module 503 is configured to, when calculating the actual allocated power of each charging pile based on a weighted average allocation algorithm according to the total power to be allocated of the target charging group and the charging power data, specifically configured to: calculate a minimum total charging power according to the minimum charging power and the number of charging piles in the target charging group; calculate a required upper limit of charging power total value according to the upper limit of charging power of each charging pile; determine 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 upper limit of charging power total value is less than or equal to the minimum total charging power; if yes, determine that the actual allocated power of each charging pile is the minimum charging power; if no, determine whether the total power to be allocated of the target charging group is greater than or equal to the required upper limit of charging power total value; if the total power to be allocated of the target charging group is greater than or equal to the required upper limit of charging power total value, determine that the actual allocated power of each charging pile is the upper limit of charging power of each charging pile; if the total power to be allocated of the target charging group is less than the required upper limit of charging power total value, calculate the weight value of each charging pile, and calculate the actual allocated power of each charging pile according to the weight value.

[0131] In a possible design, the calculation module 503 is configured to: 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, calculate a weight value of each charging pile, and when calculating the actual allocation power of each charging pile according to the weight value, specifically configured to: 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, obtain a minimum value in the upper limit values of the charging powers of the charging piles as an upper limit minimum value; calculate a first weight value according to the total power value to be allocated of the target charging group and the total upper limit value of the required charging power; and if the product of the upper limit minimum value and the first weight value is greater than or equal to the minimum value of the charging powers, the actual allocation power of each charging pile is the product of the upper limit value of the charging power of each charging pile and the first weight value.

[0132] In a possible design, the calculation module 503 is further configured to: if the product of the upper limit minimum value and the first weight value is less than the minimum value of the charging powers, calculate a second weight value according to the minimum value of the charging powers, 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 in the target charging group; and calculate the actual allocation power of each charging pile according to the upper limit value of the charging power of each charging pile, the minimum value of the charging powers, and the second weight value.

[0133] In a possible design, the calculation module 503 is further configured to: 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 allocation power of each charging pile is the upper limit value of the charging power of each charging pile.

[0134] It can be seen that the charging power allocation apparatus shown in the embodiments 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, calculates the actual allocation power of each charging pile according to the total power value to be allocated of the target charging group and the charging power data based on the weighted average allocation algorithm, adjusts the charging power of each charging pile, avoids the risk of exceeding the power load of the charging station since the actual allocation power is allocated based on the constraint condition of the total power value to be allocated of the target charging group, fully considers the charging power of each charging pile, and introduces the user-reported custom upper limit value of the charging power as a constraint condition, reasonably allocates based on the average allocation algorithm, so that the actual allocation power is more in line with the actual situation, improves the use efficiency of each charging pile, and improves the overall power utilization efficiency of the charging station.

[0135] Referring to Figure 6 , Figure 6Fig. 1 is a structural schematic diagram of a charging management device provided by an embodiment of the present application. The charging management device 60 comprises a processor 601, a memory 602 and a transceiver 603. The memory 602 is connected to the processor 601, for example, connected to the processor 601 through a bus.

[0136] The processor 601 is configured to support the charging management device 60 to perform the corresponding functions in the methods in the above method embodiments. 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.

[0137] The memory 602 is used to store program codes and the like. The memory 602 can include a volatile memory (VM), for example, a random access memory (RAM); the memory 602 can also include a non-volatile memory (NVM), for example, a read-only memory (ROM), a flash memory, a hard disk drive (HDD) or a solid-state drive (SSD); the memory 602 can also include a combination of the above kinds of memories.

[0138] The transceiver 603 is used to communicate with the charging station and exchange data with the charging station. The charging station comprises at least one charging group, and each charging group comprises at least two charging piles.

[0139] The processor 601 can invoke the program codes to perform the following operations:

[0140] determining a total power value to be allocated to a target charging group, the target charging group being a charging group that has not been allocated charging power or needs to adjust charging power;

[0141] obtain charging power data of each charging pile in the target charging group;

[0142] According to the total power value to be allocated of the target charging group and the charging power data, calculate the actual allocated power of each charging pile based on a weighted average allocation algorithm.

[0143] The embodiments of the present application further provide a computer readable storage medium, which stores a computer program, the computer program comprising program instructions, the program instructions causing a computer to execute the method according to the foregoing embodiments when the computer program is executed by the computer.

[0144] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be completed by a computer program instructing related hardware, and the program can be stored in a computer readable storage medium. When the program is executed, the program can include the processes of the above-mentioned embodiments. The storage medium can be a magnetic disc, an optical disc, a read-only memory (ROM) or a random access memory (RAM), etc.

[0145] The above only describes the preferred embodiments of the present application, and of course cannot limit the scope of the present application. Therefore, equivalent changes made according to the claims of the present application are still within the scope of the present application.

Claims

1. A method of charging power allocation, characterized by, The application is applied to a charging management device for managing a charging station, the charging station comprising at least one charging group, each charging group comprising at least two charging piles, the method comprising: determining a total power value to be allocated to a target charging group, the target charging group being a charging group to which no charging power is allocated or to which charging power needs to be adjusted, comprising: obtaining a total power upper limit value of the charging station; calculating a charging power upper limit value of each charging group, comprising: obtaining a rated charging power upper limit value of each charging pile under an i-th charging group, the i being an integer greater than or equal to 1 and less than or equal to n, the n being a number of charging groups under the charging station; calculating a total rated charging power upper limit value of the i-th charging group according to the rated charging power upper limit value; taking the total rated charging power upper limit value as the power upper limit value of the i-th charging group; taking an i+1-th charging group as the i-th charging group, returning to the step of obtaining the rated charging power upper limit value of each charging pile under the i-th charging group until the i=n; calculating the total power value to be allocated to the target charging group according to the power upper limit values of the charging groups and the total power upper limit value of the charging station; obtaining charging power data of each charging pile in the target charging group; calculating actual allocation power of each charging pile according to the total power value to be allocated to the target charging group and the charging power data based on a weighted average allocation algorithm.

2. The method of claim 1, wherein, The calculation of the total power value to be allocated to the target charging group according to the power upper limit values of the charging groups and the total power upper limit value of the charging station comprises: if a sum of the power upper limit values of the charging groups is less than or equal to the total power upper limit value of the charging station, the total power value to be allocated to the target charging group is the power upper limit value of the target charging group; if the total power upper limit values of the charging groups are greater than the total power upper limit value of the charging station, the total power value to be allocated to 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 charging groups based on the weighted average allocation algorithm.

3. The method of any one of claims 1 to 2, wherein, The method further comprises: 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 a 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 be the total custom charging power upper limit value.

4. The method of claim 1, wherein, The charging power data of each charging pile in the target charging group at least comprises a charging power upper limit value and a minimum charging power of each charging pile, wherein the minimum charging power of each charging pile is the same and is preset by the charging management device.

5. The method of claim 4, wherein, The calculation of the actual allocation power of each charging pile according to the total power value to be allocated to the target charging group and the charging power data based on the weighted average allocation algorithm comprises: calculating a minimum total charging power value according to the minimum charging power value and the number of charging piles under the target charging group; calculating a required upper limit total charging power value according to the upper limit charging power value of each charging pile; determining 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 upper limit total charging power value is less than or equal to the minimum total charging power value; if yes, determining the actual allocated power of each charging pile as the minimum charging power value; if no, determining whether the total power value to be allocated of the target charging group is greater than or equal to the required upper limit total charging power value; if the total power value to be allocated of the target charging group is greater than or equal to the required upper limit total charging power value, determining the actual allocated power of each charging pile as the upper limit charging power value of each charging pile; if the total power value to be allocated of the target charging group is less than the required upper limit total charging power value, calculating a weight value of each charging pile, and calculating the actual allocated power of each charging pile according to the weight value.

6. The method of claim 5, wherein, The method further comprises: if the total power value to be allocated of the target charging group is less than the required upper limit total charging power value, obtaining a minimum value in the upper limit charging power value of each charging pile as an upper limit minimum value; calculating a first weight value according to the total power value to be allocated of the target charging group and the required upper limit total charging power value; if the product of the upper limit minimum 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 upper limit charging power value of each charging pile and the first weight value.

7. The method of claim 6, wherein, The method further comprises: if the product of the upper limit minimum value and the first weight value is less than the minimum charging power value, calculating a second weight value according to the minimum charging power value, the total power value to be allocated of the target charging group, the required upper limit total charging power value, and the number of charging piles under the target charging group; calculating the actual allocated power of each charging pile according to the upper limit charging power value of each charging pile, the minimum charging power value, and the second weight value.

8. The method of claim 5, wherein, The method further comprises: if the total power value to be allocated of the target charging group is greater than or equal to the required upper limit total charging power value, the actual allocated power of each charging pile is the upper limit charging power value of each charging pile.

9. A charging power allocation apparatus applied to the method of any one of claims 1-8, characterized in that, The device is applied to a charging management equipment for managing charging stations, the charging stations comprising at least one charging group, each charging group comprising at least two charging piles, and the device comprising: a determination module for determining a total power value to be allocated of a target charging group, the target charging group being a charging group that has not been allocated charging power or needs to adjust charging power; an acquisition module for acquiring charging power data of each charging pile in the target charging group; A computing module 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.

10. A charge management device, characterized by, The charging management device comprises a memory, a processor and a transceiver, the memory and the transceiver are connected to the processor, the transceiver is configured to exchange data with the charging station, and the processor is configured to execute one or more computer programs stored in the memory, and the processor, when executing the one or more computer programs, causes the charging management device to implement the method according to any one of claims 1-8.

11. A computer readable storage medium, characterized in that, The computer readable storage medium stores a computer program, and the computer program comprises program instructions, which, when executed by a processor, cause the processor to execute the method according to any one of claims 1-8.

12. A charging power distribution system, characterized by, The charging management device and the charging station are provided, the charging station comprises at least one charging group, each charging group comprises at least two charging piles, and the charging management device is configured to execute the method according to any one of claims 1-8.

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