Charging pile power allocation method and power allocation system based on vehicle-mounted communication unit

Abstract

The application provides a charging pile power allocation method and system based on a vehicle-mounted communication unit. The method comprises the following steps: determining the initial allocation power of each charging pile connected with the power allocation device according to the preset system power of a detection device, and allocating the initial allocation power to each charging pile; during the operation of each charging pile, the current total online power of the detection device is determined in real time, and the actual operation parameters and system allocation parameters of each charging pile are obtained; and the allocation power of at least one charging pile is adjusted according to the system power, the current total online power of the detection device, the actual operation parameters and system allocation parameters of each charging pile. The application adjusts the allocation power of each charging pile in real time during the real-time operation of the charging pile, maximizes the utilization of power load, meets the optimal charging demand, is suitable for complex and diverse charging demand, and guarantees the charging experience of users.

Description

Technical Field

[0001] This application relates to the field of power allocation technology, and more specifically, to a power allocation method and system for charging piles based on an on-board communication unit. Background Technology

[0002] With the explosive growth in the number of new energy vehicles, AC charging piles, as the supporting terminal charging infrastructure, have been widely deployed in various scenarios such as residential areas and public parking lots, becoming a key support for ensuring the travel of new energy vehicles. How to achieve dynamic allocation and intelligent management of charging pile power has become the core technical direction for the current optimization of charging infrastructure.

[0003] Currently, there are two optimization categories for power distribution in multi-charging-pile parallel scenarios: one is to assign a fixed power allocation to each charging pile; the other is to set a fixed priority for each charging pile, prioritizing high-priority devices to operate at their rated power, while low-priority devices are either evenly distributed with the remaining power or have their power cut off directly.

[0004] However, the fixed power allocation scheme fails to consider the differences in the operating status of each charging station in actual charging scenarios, resulting in significant power waste. The scheme of setting a fixed priority for each charging station relies excessively on preset priority rules, making it difficult to adapt to complex and ever-changing charging demands. During high-load charging, low-priority devices may remain in a low-power or no-power state for extended periods, causing some vehicles to be unable to charge for long periods, leading to a poor user experience. Summary of the Invention

[0005] The purpose of this application is to provide a charging pile power allocation method and power allocation system based on an on-board communication unit to address the shortcomings of the prior art and solve the problem of unreasonable power allocation in the prior art.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0007] In a first aspect, this application provides a charging pile power allocation method based on an on-board communication unit (TCU). The method is applied to a power allocation device in a power allocation system. The power allocation system includes: a detection device, a power allocation device, multiple charging piles, and a smart charging cloud platform. The power allocation device is connected to the detection device via a serial communication interface standard bus. The power allocation device is also connected to the smart charging cloud platform via a remote Internet of Things (IoT). Each charging pile is connected to the power allocation device via a controller local area network (Controller Area Network). The power allocation device further includes a human-machine interface module, which may be an on-board communication unit (TCU). The method includes:

[0008] Based on the preset system power of the detection device, the initial allocation power of each charging pile connected to the power allocation device is determined, and the initial allocation power is allocated to each charging pile; wherein, the preset system power of the detection device is set based on the total power of orderly charging;

[0009] During the operation of each charging pile, the current total online power of the detection device is determined in real time, and the actual operating parameters and system allocation parameters of each charging pile are obtained. The system allocation parameters include: preset adjustment speed, preset overload threshold and rated power of each charging pile. The actual operating parameters include: three-phase current and three-phase voltage of the charging pile.

[0010] Based on the system power, the current total online power of the detection device, the actual operating parameters of each charging pile, and the system allocation parameters, adjust the power allocation of at least one of the charging piles.

[0011] Optionally, adjusting the allocated power of at least one of the charging piles based on the system power, the current total online power of the detection device, the actual operating parameters of each charging pile, and the system allocation parameters includes:

[0012] The total remaining power is determined based on the current total online power and the system power.

[0013] If the total remaining power is greater than or equal to the first preset threshold, the online power of each charging pile is determined according to the actual operating parameters of each charging pile, and the target allocated power and target total remaining power of each charging pile are determined according to the total remaining power, the online power of each charging pile, the allocated power of each charging pile, the adjustment speed and the rated power of each charging pile.

[0014] If the total remaining power is less than the first preset threshold, the online power of each charging pile is determined according to the actual operating parameters of each charging pile, and the target allocated power and target total remaining power of each charging pile are determined according to the total remaining power, the overload threshold, the adjustment speed, the allocated power of each charging pile and the online power of each charging pile.

[0015] Adjust the power allocation of at least one charging pile according to the target power allocation and the target total remaining power.

[0016] Optionally, determining the online power of each charging pile based on its actual operating parameters includes:

[0017] The sum of the products of the three-phase voltage and the three-phase current in the actual operating parameters of each charging pile is taken as the online power of each charging pile.

[0018] Optionally, the target allocated power and target total remaining power of each charging pile are determined based on the total remaining power, the online power of each charging pile, the allocated power of each charging pile, the adjustment speed, and the rated power of each charging pile, including:

[0019] A first charging pile among the plurality of charging piles is identified. The online power of the first charging pile is greater than the allocated power and the maintenance time exceeds a preset duration. The target allocated power of the first charging pile is set to 0, and the allocated power of the first charging pile is added to the total remaining power to obtain the target total remaining power.

[0020] Based on the adjustment speed and the power allocation of each charging pile, a first allocation threshold and a second allocation threshold are determined, wherein the second allocation threshold is greater than the first allocation threshold.

[0021] If a second charging pile is identified among the plurality of charging piles, and the online power of the second charging pile is less than the first allocation threshold and the maintenance time exceeds a preset duration, then the allocation power of the second charging pile is subtracted from the adjustment speed to obtain the target allocation power, and the adjustment speed is added to the total remaining power to obtain the target total remaining power.

[0022] A third charging pile among the plurality of charging piles is identified. The online power of the third charging pile is greater than the second allocation threshold and less than the allocation power. It is then determined whether the total remaining power is greater than the second preset threshold. If so, the target allocation power and target total remaining power of the third charging pile are determined based on the rated power, allocation power, and total remaining power of the third charging pile.

[0023] Optionally, determining the target allocated power and target total remaining power of the third charging pile based on its rated power, allocated power, and total remaining power includes:

[0024] The sum of the allocated power of the third charging pile and the total remaining power is taken as the first sum;

[0025] Determine whether the first sum is less than the rated power of the third charging pile. If yes, use the first sum as the target allocated power of the third charging pile and set the target total remaining power to 0. If no, use the rated power of the third charging pile as the target allocated power of the third charging pile, calculate the difference between the rated power of the third charging pile and the allocated power of the third charging pile as the first difference, and use the difference between the total remaining power and the first difference as the target total remaining power.

[0026] Optionally, determining the target allocated power and target total remaining power for each charging pile based on the total remaining power, the overload threshold, the adjustment speed, the allocated power of each charging pile, and the online power of each charging pile includes:

[0027] If the total remaining power is greater than the negative value of the overload threshold and less than the third preset threshold, then the fourth charging pile among the plurality of charging piles is determined. The online power of the fourth charging pile is greater than the allocated power and the maintenance time exceeds the preset duration. The new allocated power of the fourth charging pile is set to 0, and the allocated power of the fourth charging pile is added to the total remaining power to obtain a new total remaining power.

[0028] If the total remaining power is not greater than the negative value of the overload threshold, then the fifth charging pile among the plurality of charging piles is determined. The online power of the fifth charging pile is greater than the allocated power. The new allocated power of the fifth charging pile is set to 0, and the allocated power of the fifth charging pile is added to the total remaining power to obtain a new total remaining power.

[0029] Determine whether the new total remaining power is less than a third preset threshold. If so, determine the target allocated power and target total remaining power of each charging pile based on the allocated power of each charging pile, the adjustment speed, and the new total remaining power.

[0030] Optionally, determining the target allocated power and target total remaining power for each charging pile based on the allocated power of each charging pile, the adjustment speed, and the new total remaining power includes:

[0031] The charging pile recovery sequence is determined based on the charging order of each charging pile. Each charging pile in the charging pile recovery sequence is traversed. For the current first charging pile, the difference between the allocated power of the current first charging pile and the adjustment speed is taken as the new allocated power of the current first charging pile. The sum of the new total remaining power and the adjustment speed is taken as the total remaining power to be judged. It is determined whether the total remaining power to be judged is less than a fourth preset threshold. If it is, the next charging pile is traversed. Otherwise, the traversal is stopped, and the new allocated power of each charging pile is taken as the target allocated power, and the total remaining power to be judged is taken as the target total remaining power.

[0032] Optionally, after allocating power to each charging pile according to the target power allocation and the target total remaining power, the method further includes:

[0033] If a charging pile to be woken up is identified among the plurality of charging piles, and the target allocated power of the charging pile to be woken up is 0, and the target total remaining power is not 0, and the maintenance time is greater than the preset sleep time, then it is determined whether the target total remaining power is greater than the rated power of the charging pile to be woken up. If so, the rated power of the charging pile to be woken up is used as the wake-up allocated power of the charging pile to be woken up, and the difference between the target total remaining power and the rated power is used as the total remaining power for wake-up.

[0034] If the target total remaining power is not greater than the rated power of the charging pile, but is greater than the preset minimum starting power, then the target total remaining power is used as the wake-up allocation power of the charging pile to be woken up, and the total remaining power for wake-up is set to 0, and the minimum starting power is less than the rated power of the charging pile.

[0035] If the target total remaining power is not greater than the preset minimum starting power, then the wake-up allocation power and the wake-up total remaining power of each charging pile are determined according to the charging sequence of each charging pile, the target allocated power of each charging pile, the adjustment speed, and the target total remaining power.

[0036] Adjust the power allocation of at least one charging pile according to the wake-up allocated power and the total remaining wake-up power.

[0037] Optionally, determining the wake-up allocated power and the total wake-up remaining power of each charging pile based on the charging sequence of each charging pile, the target allocated power of each charging pile, the adjustment speed, and the target total remaining power includes:

[0038] The charging pile wake-up sequence is determined according to the charging order of each charging pile. Each charging pile in the wake-up sequence is traversed. For the current second charging pile, it is determined whether the target allocated power of the current second charging pile is greater than the sum of the minimum starting power and the adjustment speed. If so, the difference between the allocated power of the current second charging pile and the adjustment speed is taken as the new allocated power of the current second charging pile, and the new total remaining power is set as the sum of the target total remaining power and the adjustment speed. It is then determined whether the new total remaining power is greater than or equal to the minimum starting power. If not, the next charging pile is traversed. If so, the new total remaining power is taken as the wake-up allocated power of the charging pile to be woken up, and the total remaining wake-up power is set to 0.

[0039] Secondly, this application provides a power allocation system, which includes: a power allocation device, a detection device, multiple charging piles, and an intelligent charging cloud platform. The power allocation device is connected to the detection device, the multiple charging piles, and the intelligent charging cloud platform, respectively. The power allocation device is used to execute the charging pile power allocation method based on the vehicle communication unit as described in the first aspect.

[0040] The beneficial effects of this application are as follows: Based on the preset system power of the detection device, the initial power allocation for each charging pile connected to the power allocation device is determined, and the initial power allocation is distributed to each charging pile. During the operation of each charging pile, the current total online power of the detection device is determined in real time, and the actual operating parameters and system allocation parameters of each charging pile are acquired in real time. The system allocation parameters include: a preset adjustment speed, a preset overload threshold, and the rated power of each charging pile. Based on the system power, the current total online power of the detection device, the actual operating parameters of each charging pile, and the system allocation parameters, the power allocation of at least one charging pile is adjusted. This embodiment adjusts the power allocation of each charging pile in real time during the real-time operation of the charging piles to meet their actual needs. Furthermore, the adjustment is based on four parameters: system power, the current total online power of the detection device, the actual operating parameters of each charging pile, and the system allocation parameters. Therefore, it can maximize the utilization of power load under limited system power load conditions, meet optimal charging needs, and is suitable for complex and diverse charging requirements, ensuring a good charging experience for users. Attached Figure Description

[0041] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 This is a schematic diagram of the structure of a power distribution system provided in an embodiment of this application;

[0043] Figure 2 This is a schematic diagram of a main interface provided in an embodiment of this application;

[0044] Figure 3 This is a schematic diagram of a system configuration interface provided in an embodiment of this application;

[0045] Figure 4 This is a schematic diagram of a system parameter query and configuration interface provided in an embodiment of this application;

[0046] Figure 5This is a schematic diagram of a charging interface provided in an embodiment of this application;

[0047] Figure 6 This is a schematic diagram of a settlement interface provided in an embodiment of this application;

[0048] Figure 7 This is a flowchart illustrating a charging pile power allocation method based on an on-board communication unit provided in an embodiment of this application.

[0049] Figure 8 This is a schematic diagram of a process for adjusting the allocated power of at least one charging pile, provided in an embodiment of this application.

[0050] Figure 9 This is a schematic diagram of a process for determining the target allocated power and the target total remaining power of each charging pile, provided in an embodiment of this application.

[0051] Figure 10 This is a schematic diagram of another process for determining the target allocated power and the target total remaining power of each charging pile, provided in an embodiment of this application.

[0052] Figure 11 This is a schematic diagram of a charging pile wake-up and startup process provided in an embodiment of this application;

[0053] Figure 12 This is a schematic diagram of a power allocation process under normal operating conditions provided in an embodiment of this application;

[0054] Figure 13 This is a schematic diagram of a power allocation process under abnormal operating conditions provided in an embodiment of this application;

[0055] Figure 14 This is a schematic diagram of a power allocation process for a wake-up condition provided in an embodiment of this application. Detailed Implementation

[0056] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. It should be understood that the accompanying drawings in this application are for illustrative and descriptive purposes only and are not intended to limit the scope of protection of this application. Furthermore, it should be understood that the schematic drawings are not drawn to scale. The flowcharts used in this application illustrate operations implemented according to some embodiments of this application. It should be understood that the operations in the flowcharts may not be implemented in sequence, and steps without logical contextual relationships may be reversed or implemented simultaneously. In addition, those skilled in the art, guided by the content of this application, may add one or more other operations to the flowcharts, or remove one or more operations from the flowcharts.

[0057] Furthermore, the described embodiments are merely some, not all, of the embodiments of this application. The components of the embodiments of this application described and illustrated herein can typically be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0058] It should be noted that the term "comprising" will be used in the embodiments of this application to indicate the presence of the features declared thereafter, but does not exclude the addition of other features.

[0059] Currently, there are two optimization categories for power distribution in multi-charging-pile parallel scenarios: One is to assign a fixed power allocation to each charging pile. However, this approach doesn't consider the differences in the operating status of each charging pile in actual charging scenarios, resulting in significant power waste. The second is to assign a fixed priority to each charging pile, prioritizing high-priority devices to operate at their rated power, while low-priority devices are either evenly distributed with their remaining power or directly disconnected. However, this approach relies excessively on preset priority rules and struggles to adapt to complex and changing charging demands. During high-load charging, low-priority devices may remain in a low-power or no-power state for extended periods, causing some vehicles to be unable to charge for long periods, leading to a poor user experience.

[0060] Based on this, this application provides a charging pile power allocation method based on an on-board communication unit. This method first determines the initial total online power based on the system power of the detection device, then determines the initial allocated power for each charging pile based on the initial total online power, and allocates the initial allocated power to each charging pile. During the real-time operation of each charging pile, the current total online power of the detection device is determined in real time, and the actual operating parameters and system allocation parameters of each charging pile are acquired in real time. Based on the system power, the current total online power of the detection device, the actual operating parameters of each charging pile, and the system allocation parameters, the allocated power of at least one of the charging piles is adjusted. This application adjusts the allocated power of each charging pile in real time during the real-time operation of the charging pile to meet the actual needs of each charging pile. Furthermore, the adjustment is based on four parameters: system power, the current total online power of the detection device, the actual operating parameters of each charging pile, and the system allocation parameters. Under limited power load conditions, it maximizes the utilization of power load, meets optimal charging needs, is applicable to complex and diverse charging requirements, and ensures a good charging experience for users.

[0061] Figure 1 This is a schematic diagram of a power distribution system provided in an embodiment of this application. Figure 1As shown, the power allocation system includes a power allocation device, a detection device, multiple charging piles, and an intelligent charging cloud platform. The power allocation device is connected to the detection device, multiple charging piles, and the intelligent charging cloud platform, respectively. The power allocation device is used to execute the charging pile power allocation method based on the vehicle communication unit.

[0062] Each charging pile can be a three-phase AC pile or a single-phase AC pile; this application uses a three-phase AC pile as an example. Each charging pile is connected to the power distribution device via a Controller Area Network (CAN) bus. The power distribution device can also be connected to the detection device via a Recommended Standard 485 (RS-485) bus. The power distribution device can also be connected to a smart charging cloud platform via a remote Internet of Things (IoT) connection. The smart charging cloud platform can remotely control the charging of each charging pile through the power distribution device and can remotely view the operating status and power consumption of each charging pile and the detection device.

[0063] As an optional implementation, the power distribution device also includes a human-machine interface module for displaying a human-machine interface. Optionally, the human-machine interface module may be a Telematics Control Unit (TCU), through which human-machine interaction can be achieved.

[0064] Specifically, the human-computer interaction interface includes the main running interface, system configuration interface, system parameter query and configuration interface, charging interface, and settlement interface.

[0065] The main interface displays the working status of each charging station. Figure 2 This is a schematic diagram of a main interface provided in an embodiment of this application. For example... Figure 2 As shown, this interface displays the current status of each charging station, such as invalid, idle, faulty, ready, charging, and billing. Users can also check the power status of each charging station by clicking. As an optional implementation, the status of each charging station can be represented by different preset icons. For example, in the current status of each charging station, an idle icon can be used for white, a faulty icon for red, and a ready icon for green.

[0066] Figure 3 This is a schematic diagram of a system configuration interface provided in an embodiment of this application. Figure 3 As shown, the system configuration interface displays charging records, fault records, version information, system settings, parameter settings, rate settings, manual charging, and setpoint testing. Manual charging allows for manual adjustment of charging power.

[0067] Figure 4This is a schematic diagram of a system parameter query and configuration interface provided in an embodiment of this application. For example... Figure 4 As shown, the system parameter query and configuration interface can include the TCU system parameter interface and the TCU operating parameter interface. The TCU system parameter interface can be used to set preset duration, adjust speed, overload threshold, preset threshold, password settings, and remote communication settings. The TCU operating parameter interface can include print control settings, charging mode settings, current ratio settings, and platform manufacturer settings.

[0068] Figure 5 This is a schematic diagram of a charging interface provided in an embodiment of this application. For example... Figure 5 As shown, the charging interface displays the charging pile's working status, total charging capacity, A-phase voltage, A-phase current, B-phase voltage, B-phase current, C-phase voltage, C-phase current, charging time, and online power.

[0069] Figure 6 This is a schematic diagram of a settlement interface provided in an embodiment of this application. Figure 6 As shown, the settlement interface displays the charging electricity cost, total consumption amount, gun number, charging service fee, and waiting countdown.

[0070] Optionally, let's first take an example of the application scenario of the charging pile power allocation method based on the vehicle communication unit: The transformer supplies power to each charging pile through the detection device and the power allocation device. If there are a total of 6 charging piles, and the rated power of each charging pile is, for example, 20KW, but the transformer can provide a system power of, for example, 60KW for orderly charging of the charging piles, then under limited power load conditions, it is necessary to maximize power utilization through the power allocation method to meet the charging needs of as many vehicles as possible.

[0071] Figure 7 This is a schematic flowchart illustrating a charging pile power allocation method based on a vehicle-mounted communication unit, as provided in an embodiment of this application. Next, refer to... Figure 7 The steps of the charging pile power allocation method based on the vehicle-mounted communication unit are introduced.

[0072] S701. Based on the preset system power of the detection device, determine the initial power allocation of each charging pile connected to the power allocation device, and allocate the initial power allocation to each charging pile.

[0073] Optionally, the ammeter's system power is set based on the total power of the orderly charging. As an alternative implementation, the system power can be the transformer power, connected to the detection device, used to power each charging station; for example, the system power is 60 kW.

[0074] As an optional implementation, the quotient of the preset system power and the number of charging piles is used as the initial allocated power for each charging pile.

[0075] For example, if the system power is 60KW and there are 6 charging piles connected to the power distribution device, then the initial power allocation for each charging pile is 10KW.

[0076] S702. During the operation of each charging pile, the current total online power of the detection device is determined in real time, and the actual operating parameters and system allocation parameters of each charging pile are obtained in real time. The system allocation parameters include: the preset adjustment speed, the preset overload threshold and the rated power of each charging pile. The actual operating parameters include: the three-phase current and three-phase voltage of the charging pile.

[0077] Optionally, after allocating an initial power allocation to each charging pile, each charging pile operates according to the initial power allocation. During the operation of each charging pile, the current total online power of the detection device and the actual operating parameters of each charging pile can be determined based on a preset allocation cycle. The allocation cycle can be, for example, 30 seconds.

[0078] It is worth noting that, in the process of determining the current total online power of the detection device and acquiring the actual operating parameters of each charging pile in real time, the real-time status of each charging pile can also be acquired. Real-time status can include: normal, fault, offline, and online. Charging piles are marked according to their real-time status, and power allocation is stopped for charging piles with a real-time status of offline or fault during power allocation. This embodiment describes the case where the real-time status of each charging pile is normal and online.

[0079] Optionally, the current total online power of the detection device can be obtained by: acquiring the current operating parameters of the detection device in real time, including the three-phase current and three-phase voltage of the detection device, and determining the current total online power of the detection device based on the current operating parameters of the detection device.

[0080] For example, the three-phase current of the detection device can be I 总A I 总B and I 总C The three-phase voltage can be U 总A U 总B and U 总C The current total online power can be calculated using the following formula (1):

[0081] (1)

[0082] Optionally, the actual operating parameters of each charging pile can be acquired in real time: three-phase current and three-phase voltage. For example, the three-phase current of a charging pile can be I... iA IiB and I iC The three-phase voltage can be U iA U iB and U iC .

[0083] Optionally, in the system allocation parameters, the adjustment speed is used to control the power adjustment speed. For example, the adjustment speed for three-phase charging can be 4kW, and the adjustment speed for single-phase charging can be 2kW. The overload threshold is the threshold at which the current total online power exceeds the system power. If the power used by a charging pile exceeds the overload threshold, it indicates that the charging pile is uncontrollable. The overload threshold can be, for example, 6kW. The rated power of each charging pile is the maximum allowable charging power of a single charging pile. The rated power of a three-phase charging pile is 21kW, and the rated power of a single-phase charging pile is 7kW.

[0084] S703. Adjust the power allocation of at least one charging pile based on the system power, the current total online power of the detection device, the actual operating parameters of each charging pile, and the system allocation parameters.

[0085] As an optional implementation, the online power of each charging pile is determined based on the actual operating parameters of each charging pile. Then, based on the system power, the current total online power of the detection device, the online power of each charging pile, and the system allocation parameters, the target allocated power and the target total remaining power of each charging pile are determined. The allocated power of at least one charging pile is adjusted according to the target allocated power and the target total remaining power.

[0086] Optionally, after adjusting the power allocation of at least one charging pile, the current total online power of the detection device can be determined in real time, and the actual operating parameters of each charging pile can be obtained in real time, thereby updating the target power allocation and target total remaining power of each charging pile in real time, so as to dynamically allocate power to each charging pile.

[0087] Optionally, the actual operating parameters and allocated power of each charging pile can be displayed in real time on the human-machine interface of the power allocation device, and can be remotely sent to the smart charging cloud platform in real time by the power allocation device.

[0088] In this embodiment, based on the preset system power of the detection device, the initial power allocation for each charging pile connected to the power allocation device is determined, and the initial power allocation is distributed to each charging pile. During the operation of each charging pile, the current total online power of the detection device is determined in real time, and the actual operating parameters and system allocation parameters of each charging pile are acquired in real time. The system allocation parameters include: a preset adjustment speed, a preset overload threshold, and the rated power of each charging pile. Based on the system power, the current total online power of the detection device, the actual operating parameters of each charging pile, and the system allocation parameters, the power allocation of at least one charging pile is adjusted. This embodiment adjusts the power allocation of each charging pile in real time during the real-time operation of the charging piles to meet the actual needs of each charging pile. Furthermore, the adjustment is dynamically based on four parameters: system power, the current total online power of the detection device, the actual operating parameters of each charging pile, and the system allocation parameters. Under limited system power load, it maximizes the utilization of power load, meets optimal charging needs, is suitable for complex and diverse charging requirements, and ensures a good charging experience for users.

[0089] Next, refer to Figure 8 The process of adjusting the allocated power of at least one charging pile in step S703 above, based on the system power, the current total online power of the detection device, the actual operating parameters of each charging pile, and the system allocation parameters, is described below. Figure 8 This is a schematic diagram of a process for adjusting the power distribution of at least one charging pile, provided in an embodiment of this application.

[0090] S801. Determine the total remaining power based on the current total online power and system power.

[0091] Alternatively, the difference between the system power and the current total online power can be used as the total remaining power.

[0092] It's worth noting that if the system power is greater than the current total online power, the total remaining power is greater than 0, indicating that the power currently being used is sufficient to cover the pre-set system power, and more power can be allocated to the charging piles. If the system power equals the current total online power, it means that the power used by the charging piles has just reached the system power. If the system power is less than the current total online power, the power used by the charging piles exceeds the system power. In this case, charging cannot proceed in an orderly manner, and there may be uncontrollable charging piles.

[0093] S802. If the total remaining power is greater than or equal to the first preset threshold, the online power of each charging pile is determined according to the actual operating parameters of each charging pile, and the target allocated power and target total remaining power of each charging pile are determined according to the total remaining power, the online power of each charging pile, the allocated power of each charging pile, the adjustment speed, and the rated power of each charging pile.

[0094] The first preset threshold can be 0.

[0095] Optionally, if the total remaining power is greater than or equal to the first preset threshold, it means that the power can continue to be provided to the charging pile. In this case, the power of the uncontrollable charging pile and the charging pile with excess power can be recovered first, and then the remaining power can be allocated to the charging piles in need.

[0096] Among them, the target allocated power of each charging pile is the power allocated to each charging pile in the next moment, the power allocation device is the power allocated to each charging pile, and the target total remaining power is the remaining power of each charging pile when it charges according to the target allocated power in the next moment.

[0097] S803. If the total remaining power is less than the first preset threshold, the online power of each charging pile is determined according to the actual operating parameters of each charging pile, and the target allocated power and target total remaining power of each charging pile are determined according to the total remaining power, overload threshold, adjustment speed, allocated power of each charging pile and online power of each charging pile.

[0098] Optionally, if the total remaining power is less than the first preset threshold, it indicates that the power distribution is abnormal and may not be able to carry out orderly charging. At this time, an abnormal working condition is entered: first, the power distribution of the out-of-control pile is recovered, and then part of the power of the charging pile is recovered according to the preset charging strategy until the total remaining power is equal to or greater than the first preset threshold.

[0099] The preset charging strategy can be either a first-come, first-served principle or a membership principle. Under the first-come, first-served principle, charging stations that were used for charging the latest will be recycled first. Under the membership principle, charging stations used for charging non-members will be recycled first.

[0100] S804. Adjust the power allocation of at least one charging pile according to the target power allocation and the target total remaining power.

[0101] Specifically, the power allocation device adjusts the allocated power of at least one charging pile according to the target allocated power of each charging pile and the target total remaining power.

[0102] In this embodiment, the total remaining power is determined based on the current total online power and system power. If the total remaining power is greater than or equal to a first preset threshold, the online power of each charging pile is determined based on its actual operating parameters. Then, based on the total remaining power, the online power of each charging pile, the allocated power of each charging pile, the adjustment speed, and the rated power of each charging pile, the target allocated power and target total remaining power of each charging pile are determined. If the total remaining power is less than the first preset threshold, the online power of each charging pile is determined based on its actual operating parameters. Then, based on the total remaining power, overload threshold, adjustment speed, the allocated power of each charging pile, and the online power of each charging pile, the target allocated power and target total remaining power of each charging pile are determined. The allocated power of at least one charging pile is adjusted according to the target allocated power and target total remaining power. This embodiment determines whether the system is in a normal or abnormal state based on the total remaining power, and dynamically adjusts the allocated power of each charging pile according to the state.

[0103] The following describes the method for determining the online power of each charging pile based on its actual operating parameters in steps S802 and S803: the sum of the products of the three-phase voltage and the three-phase current in the actual operating parameters of each charging pile is taken as the online power of each charging pile.

[0104] Alternatively, the online power of each charging station can be calculated based on the following formula (2):

[0105] (2)

[0106] in, Let be the online power of the i-th charging pile.

[0107] In this embodiment, the sum of the products of the three-phase voltage and the three-phase current in the actual operating parameters of each charging pile is used as the online power of each charging pile, thereby dynamically adjusting the power allocation based on the online power of each charging pile.

[0108] Figure 9 This is a schematic diagram illustrating a process for determining the target allocated power and the target total remaining power for each charging pile, as provided in an embodiment of this application. The following refers to... Figure 9 The process of determining the target allocated power and target total remaining power of each charging pile in step S802 above, based on the total remaining power, the online power of each charging pile, the allocated power of each charging pile, the adjustment speed, and the rated power of each charging pile, will be described.

[0109] S901. Determine the first charging pile among multiple charging piles. The online power of the first charging pile is greater than the allocated power and the maintenance time exceeds the preset duration. Set the target allocated power of the first charging pile to 0 and add the allocated power of the first charging pile to the total remaining power to obtain the target total remaining power.

[0110] The preset duration could be, for example, 20 seconds.

[0111] Optionally, each charging station is traversed. For the current charging station, if its online power is greater than the allocated power and the duration exceeds a preset time, then the current charging station is designated as the first charging station and considered uncontrollable. In this case, power allocation to the first charging station is paused, putting it into a sleep state. The sum of the allocated power of the first charging station and the total remaining power is taken as the target total remaining power. After the traversal is complete, the allocated power of all charging stations except the first charging station continues to be used as the target allocated power.

[0112] S902. Based on the adjustment speed and the power allocation of each charging pile, determine a first allocation threshold and a second allocation threshold, wherein the second allocation threshold is greater than the first allocation threshold.

[0113] As an optional implementation, the first allocation threshold can be the allocation power of each charging pile minus a two-times adjustment speed, and the second allocation threshold can be the allocation power of each charging pile minus a 0.8-times adjustment speed. Here, two times and 0.8 times are preset empirical coefficients, which can be set according to actual conditions; this embodiment does not impose any limitations on them.

[0114] S903. If the online power of the second charging pile among multiple charging piles is less than the first allocation threshold and the maintenance time exceeds the preset duration, then the allocation power of the second charging pile is subtracted from the adjustment speed to obtain the target allocation power, and the adjustment speed is added to the total remaining power to obtain the target total remaining power.

[0115] The preset duration could be, for example, 20 seconds.

[0116] Optionally, each charging pile is traversed. For the current charging pile, if the online power of the current charging pile is less than the first allocation threshold and the maintenance time exceeds the preset duration, the current charging pile is used as the second charging pile. It is assumed that the allocated power of the second charging pile is much greater than the online power, so the power supplied to the second charging pile is redundant. Therefore, the power of the second charging pile is recovered by adjusting the speed.

[0117] After the traversal is completed, the allocated power of all charging piles except the second charging pile continues to be used as the target allocated power.

[0118] S904. Identify the third charging pile among multiple charging piles. The online power of the third charging pile is greater than the second allocation threshold and less than the allocation power. Determine whether the total remaining power is greater than the second preset threshold. If so, determine the target allocation power and target total remaining power of the third charging pile based on the rated power, allocation power and total remaining power of the third charging pile.

[0119] Optionally, if the online power of a charging pile is greater than the first allocation threshold and less than the second allocation threshold, no action will be taken. That is, the allocated power of each charging pile will be used as the target allocation power, and the total remaining power will be used as the target total remaining power.

[0120] Optionally, each charging station is traversed. For the current charging station, if its line power is greater than the second allocation threshold but less than the allocated power, then the current charging station is designated as the third charging station. At this point, the third charging station has a small amount of allocated power remaining. The total remaining power is then checked against a second preset threshold, where the second preset threshold can be 0. If the total remaining power is greater than the second preset threshold, the target allocated power and target total remaining power of the third charging station are determined based on its rated power, allocated power, and total remaining power, to supplement the power of the third charging station to its rated power.

[0121] After the traversal is completed, the allocated power of all charging piles except the third charging pile continues to be used as the target allocated power.

[0122] In this embodiment, based on the relationship between the online power and the allocated power of each charging pile, the target allocated power and the target total remaining power of each charging pile are determined, so as to dynamically allocate power to the charging piles under normal operating conditions according to the actual power usage of each charging pile.

[0123] The following section describes the step in step S904 above, which involves determining the target allocated power and target total remaining power of the third charging pile based on its rated power, allocated power, and total remaining power.

[0124] Optionally, the sum of the allocated power of the third charging station and the total remaining power can be used as the first sum.

[0125] Optionally, it is determined whether the first sum is less than the rated power of the third charging pile. If so, the first sum is used as the target allocated power of the third charging pile, and the target total remaining power is set to 0. If not, the rated power of the third charging pile is used as the target allocated power of the third charging pile, and the difference between the rated power of the third charging pile and the allocated power of the third charging pile is calculated as the first difference. The difference between the total remaining power and the first difference is used as the target total remaining power.

[0126] The rated power of each charging pile is less than the allocated power of each charging pile. All charging piles have the same rated power.

[0127] For example, the following formula (3) is a method for calculating the target allocated power of the third charging pile:

[0128] (3)

[0129] in, The power allocated to the i-th charging pile. This represents the total remaining power. This refers to the rated power of the charging station. For the first and the last.

[0130] For example, the following formula (4) is a method for calculating the target allocated power of the third charging pile:

[0131] (4)

[0132] in, The power allocated to the i-th charging pile. This represents the total remaining power. This refers to the rated power of the charging station.

[0133] In this embodiment, the target allocated power and target total remaining power of the third charging pile are dynamically determined based on the rated power, allocated power and total remaining power of the third charging pile, thereby optimizing the charging efficiency of the charging pile.

[0134] Figure 10 This is a schematic diagram illustrating another process for determining the target allocated power and the target total remaining power for each charging pile, provided in an embodiment of this application. Next, refer to... Figure 10 The process of determining the target allocated power and target total remaining power of each charging pile in step S803 above, based on the total remaining power, overload threshold, adjustment speed, allocated power of each charging pile, and online power of each charging pile, will be introduced.

[0135] When the total remaining power is less than the first preset threshold, it means that the current total online power exceeds the system power. Then, the following steps are performed to recover the power of the charging piles in order to ensure the normal operation of each charging pile.

[0136] S1001. If the total remaining power is greater than the negative value of the overload threshold and less than the third preset threshold, then the fourth charging pile among the multiple charging piles is determined. The online power of the fourth charging pile is greater than the allocated power and the maintenance time exceeds the preset duration. The new allocated power of the fourth charging pile is set to 0, and the allocated power of the fourth charging pile is added to the total remaining power to obtain the new total remaining power.

[0137] Optionally, if the total remaining power is greater than the negative value of the overload threshold but less than the third preset threshold, it indicates that there is an uncontrollable charging pile. In this case, it is determined whether the online power of each charging pile is greater than the allocated power and whether the duration exceeds a preset time. The charging pile whose online power is greater than the allocated power and the duration exceeds the preset time is designated as the fourth charging pile. At this time, the fourth charging pile is uncontrollable, but to a lesser degree. Therefore, power supply to the fourth charging pile is suspended, that is, the new allocated power of the fourth charging pile is set to 0.

[0138] It is worth noting that when calculating the new total remaining power, the original allocated power of the fourth charging station is added to the total remaining power, rather than the new allocated power is added to the total remaining power.

[0139] S1002. If the total remaining power is not greater than the negative value of the overload threshold, then determine the fifth charging pile among the multiple charging piles. The online power of the fifth charging pile is greater than the allocated power. Set the new allocated power of the fifth charging pile to 0 and add the allocated power of the fifth charging pile to the total remaining power to obtain the new total remaining power.

[0140] Optionally, if the total remaining power is not greater than the negative value of the overload threshold, it indicates that there is an uncontrollable charging pile. In this case, it is determined whether the online power of each charging pile is greater than the allocated power, and the charging pile whose online power is greater than the allocated power is designated as the fifth charging pile. At this time, the fifth charging pile is uncontrollable, and the degree of uncontrollability is relatively severe. Therefore, power supply to the fifth charging pile is immediately suspended, that is, the new allocated power of the fifth charging pile is set to 0.

[0141] As an optional implementation, if the total remaining power is greater than the third preset threshold, then no abnormal power consumption of the charging pile will occur, and the abnormal handling condition will be exited.

[0142] S1003. Determine whether the new total remaining power is less than the third preset threshold. If so, determine the target allocated power and target total remaining power of each charging pile based on the allocated power, adjustment speed, and new total remaining power of each charging pile.

[0143] Optionally, after setting a new power allocation for each charging pile and obtaining a new total remaining power, it is determined whether the new total remaining power is less than a third preset threshold. If so, it indicates that there is still an anomaly. Then, based on the power allocation, adjustment speed, and new total remaining power of each charging pile, the target power allocation and target total remaining power of each charging pile need to be determined, and the power allocation of each charging pile needs to be adjusted so that the final total remaining power is greater than or equal to the third preset threshold.

[0144] It is worth noting that in step S1003, when determining the target allocated power and target total remaining power of each charging pile based on the allocated power, adjustment speed, and new total remaining power of each charging pile, the allocated power of each charging pile includes the new allocated power of the fourth charging pile, the new allocated power of the fifth charging pile, and the allocated power of other charging piles.

[0145] In this embodiment, when the total remaining power is less than the first preset threshold, the target allocated power and the target total remaining power of each charging pile are determined based on the overload threshold and the third preset threshold, respectively. In this way, when the charging pile enters an abnormal working condition, the power of the charging pile is reasonably recovered to exit the abnormal working condition and ensure the orderly charging of each charging pile.

[0146] Next, the process of determining the target allocated power and target total remaining power of each charging pile in step S1003 above, based on the allocated power, adjustment speed, and new total remaining power of each charging pile, will be introduced.

[0147] Optionally, a charging pile recovery sequence is determined based on the charging order of each charging pile. Each charging pile in the recovery sequence is traversed. For the current first charging pile, the difference between its allocated power and adjustment speed is taken as the new allocated power. The sum of the new total remaining power and the adjustment speed is taken as the total remaining power to be judged. It is determined whether the total remaining power to be judged is less than a fourth preset threshold. If so, the traversal continues to the next charging pile; otherwise, the traversal stops, and the new allocated power of each charging pile is taken as the target allocated power, and the total remaining power to be judged is taken as the target total remaining power.

[0148] Optionally, this embodiment illustrates the principle of first-come, first-served. Specifically, the charging sequence of each charging pile is determined from back to front according to the charging order of each charging pile. Then, each charging pile in the charging pile sequence is traversed sequentially. During the first traversal, the current first charging pile is the last charging pile to be charged.

[0149] Optionally, the allocated power of the last charging station is reduced by an adjustment speed, and this adjustment speed is added to the new total remaining power to obtain the total remaining power to be judged. If the total remaining power to be judged is less than a fourth preset threshold, it indicates that the current operating condition is still abnormal, and the process continues to traverse the next charging station. If the total remaining power to be judged is not less than the fourth preset threshold, it indicates that the current operating condition is normal, and it is not necessary to adjust the allocated power of other charging stations. The fourth preset threshold can be 0.

[0150] As an optional implementation, the charging pile recycling sequence can also be determined based on the identity identifier of the user connected to each charging pile. Specifically, if the identity identifier of the user connected to the charging pile indicates that the user is a non-member, then the charging pile is placed at the beginning of the charging pile recycling sequence; if the corresponding user is a member, then the charging pile is placed at the end of the charging pile recycling sequence. This ensures that the allocated power of charging piles corresponding to non-member users is recycled first.

[0151] As an optional implementation, before performing the steps of this embodiment, the following steps can also be performed: If a sixth charging pile is identified, and its online power is less than the first allocation threshold and the duration exceeds a preset time, then the allocated power of the sixth charging pile is subtracted from the adjustment speed to obtain a new allocated power for the sixth charging pile. The adjustment speed is then added to the total remaining power to obtain a new total remaining power. This step is used to recover the power of charging piles with redundant power allocation. After performing this step, it is determined whether the new total remaining power is greater than or equal to the fourth preset threshold. If so, step S1003 is not required to ensure that the efficiency of each charging pile is maximized.

[0152] In this embodiment, the charging pile recovery sequence is determined based on the charging order of each charging pile, and the allocated power of each charging pile is recovered in sequence according to the charging pile recovery sequence, thereby ensuring the orderly charging of each charging pile and improving the efficiency of each charging pile.

[0153] Figure 11 This is a schematic diagram of a charging pile wake-up and startup process provided in an embodiment of this application. The following refers to... Figure 11 As shown, after allocating power to each charging station according to the target power allocation and the target total remaining power, the following steps can be performed.

[0154] S1101. Determine the charging pile to be woken up among multiple charging piles. The target allocation power of the charging pile to be woken up is 0, and the target total remaining power is not 0. In addition, the maintenance time is greater than the preset sleep time. Then determine whether the target total remaining power is greater than the rated power of the charging pile to be woken up. If so, the rated power of the charging pile is used as the wake-up allocation power of the charging pile to be woken up, and the difference between the target total remaining power and the rated power is used as the wake-up total remaining power.

[0155] Optionally, during the charging process, if there is a target allocated power of 0 and the target total remaining power is not 0, and the time for maintaining this state is greater than the preset sleep time, it indicates that the charging pile is in a sleep state, such as a working condition that is about to start working, or a working condition that was previously out of control and was forced to sleep by suspending power supply.

[0156] Optionally, if the target total remaining power is greater than the rated power of the charging pile, the power of the charging pile to be woken up can be directly supplemented to the rated power so that the charging pile to be woken up can supply power to the outside at maximum efficiency.

[0157] S1102. If the target total remaining power is not greater than the rated power of the charging pile, but is greater than the preset minimum starting power, then the target total remaining power is used as the wake-up allocation power of the charging pile to be woken up, and the total remaining power for wake-up is set to 0, and the minimum starting power is less than the rated power of the charging pile.

[0158] The minimum starting power is the minimum power allocated when the charging pile is started. If the power allocated to the charging pile is less than the minimum starting power, the charging pile cannot work properly.

[0159] Optionally, if the target total remaining power is not greater than the rated power of the charging pile, but is greater than the preset minimum starting power, the charging pile to be woken up can be started, but the power cannot be supplied at maximum efficiency (i.e., according to the rated power).

[0160] S1103. If the target total remaining power is not greater than the preset minimum starting power, then determine the wake-up allocation power and the wake-up total remaining power of each charging pile according to the charging sequence of each charging pile, the target allocation power of each charging pile, the adjustment speed, and the target total remaining power.

[0161] Optionally, if the target total remaining power is not greater than the preset minimum starting power, it means that if the current remaining power is allocated to the charging pile to be woken up, the charging pile to be woken up will still not be able to work normally. Therefore, it is necessary to recover power for each charging pile according to the charging sequence of the charging piles other than the charging pile to be woken up, so that the new total remaining power reaches the minimum starting power.

[0162] It is worth noting that after waking up the charging pile to be woken up, step S702 and subsequent steps can be executed to ensure the normal operation of each charging pile.

[0163] S1104. Adjust the power allocation of at least one charging pile according to the wake-up allocated power and the total remaining wake-up power.

[0164] It is worth noting that if the power allocation of a charging station other than the one waiting to be woken up is adjusted, the power allocation of that charging station will also be adjusted.

[0165] In this embodiment, the charging pile to be woken up is determined, and the allocated power is provided to the charging pile to be woken up according to the target total remaining power, so as to wake up the charging pile and ensure that each charging pile operates at maximum efficiency.

[0166] Next, the specific steps in step S1103 above, which determine the wake-up allocation power and the total wake-up remaining power of each charging pile based on the charging sequence of each charging pile, the target allocated power of each charging pile, the adjustment speed, and the target total remaining power, will be introduced.

[0167] Optionally, the charging pile wake-up sequence is determined according to the charging order of each charging pile. Each charging pile in the charging pile wake-up sequence is traversed. For the current second charging pile, it is determined whether the target allocated power of the current second charging pile is greater than the sum of the minimum starting power and the adjustment speed. If so, the difference between the allocated power and the adjustment speed of the current second charging pile is taken as the new allocated power of the current second charging pile, and the new total remaining power is set as the sum of the target total remaining power and the adjustment speed. It is then determined whether the new total remaining power is greater than or equal to the minimum starting power. If not, the next charging pile is traversed. If so, the new total remaining power is taken as the wake-up allocated power of the charging pile to be woken up, and the total remaining power for wake-up is set to 0.

[0168] Optionally, if the target total remaining power is less than the minimum starting power, then the power of other charging piles needs to be recovered: The charging piles are traversed from back to front according to their charging order. If the target allocated power of the current second charging pile is greater than the sum of the minimum starting power and the adjustment speed, it means that the current second charging pile has the condition to recover power. Therefore, one adjustment speed of the current second charging pile is recovered, and the new total remaining power is increased by one adjustment speed. Each time a charging pile is traversed, it is determined whether the new total remaining power is greater than the minimum starting power. If so, the new total remaining power is allocated to the charging pile to be woken up, so that the charging pile to be woken up is activated.

[0169] Optionally, this embodiment illustrates the principle of first-come, first-served. Specifically, according to the charging order of each charging pile, the charging pile wake-up sequence is determined from back to front, and then each charging pile in the charging pile wake-up sequence is traversed sequentially. During the first traversal, the current second charging pile is the last charging pile to be charged.

[0170] As an optional implementation, the charging pile wake-up sequence can also be determined based on the identity identifier of the user connected to each charging pile. Specifically, if the identity identifier of the user connected to the charging pile indicates that the user is a non-member, then the charging pile is placed at the beginning of the charging pile wake-up sequence; if the corresponding user is a member, then the charging pile is placed at the end of the charging pile wake-up sequence. This ensures that the allocated power of the charging piles corresponding to non-member users is recovered first.

[0171] In this embodiment, the charging pile wake-up sequence is determined based on the charging order of each charging pile, and the allocated power of each charging pile is recovered in sequence according to the charging pile wake-up sequence, thereby ensuring the orderly charging of each charging pile and improving the efficiency of each charging pile.

[0172] Figure 12 This is a schematic diagram of a power allocation process under normal operating conditions provided in an embodiment of this application. Next, refer to... Figure 12 This section provides an overview of power allocation under normal operating conditions.

[0173] First, iterate through all charging stations. For the i-th charging station, determine its online power P. i在线 The allocated power P of the i-th charging pile i分配 If so, and the duration is greater than 20 seconds, then the i-th charging pile is uncontrollable, and charging at the i-th charging pile is paused. P i分配 =0, total residual power P 总剩余 =P 总剩余 +P i分配 Check if the traversal is complete. If not, increment i by 1 and continue checking P. i在线 >P i分配 If the traversal is complete, then check P. i在线 <=(P i分配 -2*Adjust speed V 调 If it lasts for 20 seconds, then P i分配 =P i分配 -V 调 P 总剩余 =P 总剩余 +V 调 Then check if the traversal is complete. If not, increment i by 1 and check P. i在线 <=(P i分配 -2*V 调 If the condition is met and lasts for 20 seconds, then determine (P). i分配 -0.8*V 调 )<=P i在线 <=P i分配 If so, then determine P. 总剩余 If the value is greater than 0, then no action is taken, and i is incremented by 1, and the process continues to evaluate (P). i分配 -0.8*V 调 )<=P i在线 <=P i分配 If P 总剩余 If P is not greater than 0, then i分配 =((P i分配 +P 总剩余 ) <P 额 ? (P) i分配 +P 总剩余 ):P 额 ), P 总剩余 =P 总剩余 -((P i分配 +P 总剩余 ) <P 额 ? P 总剩余 :(P额 -P i分配 This continues until all charging stations have been visited.

[0174] Figure 13 This is a schematic diagram of a power allocation process under abnormal operating conditions provided in an embodiment of this application. The following refers to... Figure 13 This section provides an overview of power allocation under abnormal operating conditions.

[0175] First, iterate through all charging stations. For the i-th charging station encountered, determine the negative value V1 of the overload threshold. <P 总剩余 If <0, then determine P. i在线 >P i分配 And the duration is greater than 20 seconds; if so, then P i分配 =0, P 总剩余 =P 总剩余 +P i分配 Then check if the traversal is complete. If the traversal is not complete, increment i by 1 and continue to check P. i在线 >P i分配 If the duration is greater than 20 seconds, if P i在线 >P i分配 If the duration is greater than 20, the condition is not met; then i+1, and continue to check P. i在线 >P i分配 If the duration is greater than 20 seconds, and the traversal is complete, then the first case is completed. If we judge V1... <P 总剩余 If <0 is not true, then determine if V1>=P. 总剩余 If so, then determine P. i在线 > Pi分配 If so, then P i分配 =0, P 总剩余 =P 总剩余 +P i分配 Then check if the traversal is complete. If the traversal is not complete, increment i by 1 and continue to check P. i在线 >P i分配 If the traversal is complete, then the second case is completed. If either the first or second case is completed, then the following steps are executed:

[0176] Determine P 总剩余 If <0, then determine P. i在线 <=(P i分配 -2*V 调 If the duration is greater than 20 seconds, then increment i by 1 and continue to check P. i在线 <=(P i分配 -2*V 调 If the duration is greater than 20 seconds, then P i分配 =P i分配 -V 调 P总剩余 =P 总剩余 +V 调 Check if the traversal is complete. If not, increment i by 1 and continue checking P. 总剩余 <0, until the traversal is complete, or P 总剩余 >=0. If the traversal is complete, then check P. 总剩余 If <0, then determine the charging pile recycling sequence based on the charging order of each charging pile, traverse each charging pile in the charging pile recycling sequence, and for the current first charging pile encountered, execute P. i分配 =P i分配 -V 调 P 总剩余 =P 总剩余 +V 调 Check if the traversal has ended. If not, increment i by 1 and continue checking P. 总剩余 <0, if yes, then execute P. i分配 =P i分配 -V 调 P 总剩余 =P 总剩余 +V 调， Until P 总剩余 The value is greater than or equal to 0. If the traversal is complete, the process ends.

[0177] Figure 14 This is a schematic diagram of a power allocation process for a wake-up condition provided in an embodiment of this application. The following refers to... Figure 14 This section provides an overview of power allocation during wake-up operation.

[0178] If a charging pile to be woken up is identified from multiple charging piles, and the target allocated power of the charging pile to be woken up is 0, the target total remaining power is not 0, and the maintenance time is greater than the preset sleep time, then P is determined. 总剩余 Rated power P 额 If so, then P i分配 =P 额定 ,P 总剩余 =P 总剩余 -P 额定 If not, then P 最小启动 <=P 总剩余 <=P 额 If so, then P i分配 =P 总剩余 ,P 总剩余 =0, otherwise, determine the charging pile wake-up sequence according to the charging order of each charging pile, traverse each charging pile in the charging pile wake-up sequence, and for the current second charging pile encountered, determine P. i分配 >=P 最小启动 +V 调 If so, then P i分配 =P i分配 -V调 ,P 总剩余 =P 总剩余 +V 调 And determine P 总剩余 >=P 最小启动 If not, then i+1, and continue to check P. i分配 >=P 最小启动 +V 调 If so, then P i分配 =P 总剩余 ,P 总剩余 =0, and end the process.

[0179] This application embodiment also provides a power allocation system, which includes: a power allocation device, a detection device, multiple charging piles, and an intelligent charging cloud platform. The power allocation device is connected to the detection device, the multiple charging piles, and the intelligent charging cloud platform, and is used to execute a charging pile power allocation method based on an on-board communication unit.

[0180] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

Claims

1. A method for power allocation of charging piles based on an on-board communication unit, characterized in that, The method is applied to a power distribution device in a power distribution system. The power distribution system includes: a detection device, a power distribution device, multiple charging piles, and a smart charging cloud platform. The power distribution device is connected to the detection device via a standard serial communication interface bus. The power distribution device is also connected to the smart charging cloud platform via a remote Internet of Things (IoT) connection. Each charging pile is connected to the power distribution device via a controller local area network (Controller Area Network). The power distribution device further includes a human-machine interface module, which is a vehicle communication unit (TCU). The method includes: Based on the preset system power of the detection device, the initial allocation power of each charging pile connected to the power allocation device is determined, and the initial allocation power is allocated to each charging pile; wherein, the preset system power of the detection device is set based on the total power of orderly charging; During the operation of each charging pile, the current total online power of the detection device is determined in real time, and the actual operating parameters and system allocation parameters of each charging pile are obtained. The system allocation parameters include: preset adjustment speed, preset overload threshold and rated power of each charging pile. The actual operating parameters include: three-phase current and three-phase voltage of the charging pile. Based on the system power, the current total online power of the detection device, the actual operating parameters of each charging pile, and the system allocation parameters, adjust the power allocation of at least one of the charging piles. The step of adjusting the allocated power of at least one of the charging piles based on the system power, the current total online power of the detection device, the actual operating parameters of each charging pile, and the system allocation parameters includes: The total remaining power is determined based on the current total online power and the system power. If the total remaining power is greater than or equal to the first preset threshold, the online power of each charging pile is determined according to the actual operating parameters of each charging pile, and the target allocated power and target total remaining power of each charging pile are determined according to the total remaining power, the online power of each charging pile, the allocated power of each charging pile, the adjustment speed and the rated power of each charging pile. If the total remaining power is less than the first preset threshold, the online power of each charging pile is determined according to the actual operating parameters of each charging pile, and the target allocated power and target total remaining power of each charging pile are determined according to the total remaining power, the overload threshold, the adjustment speed, the allocated power of each charging pile and the online power of each charging pile. Adjust the power allocation of at least one charging pile according to the target power allocation and the target total remaining power; Based on the total remaining power, the online power of each charging pile, the allocated power of each charging pile, the adjustment speed, and the rated power of each charging pile, the target allocated power and target total remaining power of each charging pile are determined, including: A first charging pile among the plurality of charging piles is identified. The online power of the first charging pile is greater than the allocated power and the maintenance time exceeds a preset duration. The target allocated power of the first charging pile is set to 0, and the allocated power of the first charging pile is added to the total remaining power to obtain the target total remaining power. Based on the adjustment speed and the power allocation of each charging pile, a first allocation threshold and a second allocation threshold are determined, wherein the second allocation threshold is greater than the first allocation threshold. If a second charging pile is identified among the plurality of charging piles, and the online power of the second charging pile is less than the first allocation threshold and the maintenance time exceeds a preset duration, then the allocation power of the second charging pile is subtracted from the adjustment speed to obtain the target allocation power, and the adjustment speed is added to the total remaining power to obtain the target total remaining power. A third charging pile is identified among the plurality of charging piles. The online power of the third charging pile is greater than the second allocation threshold and less than the allocation power. It is then determined whether the total remaining power is greater than the second preset threshold. If so, the target allocation power and target total remaining power of the third charging pile are determined based on the rated power, allocation power and total remaining power of the third charging pile. The step of determining the target allocated power and target total remaining power of the third charging pile based on its rated power, allocated power, and total remaining power includes: The sum of the allocated power of the third charging pile and the total remaining power is taken as the first sum; Determine whether the first sum is less than the rated power of the third charging pile. If yes, use the first sum as the target allocated power of the third charging pile and set the target total remaining power to 0. If no, use the rated power of the third charging pile as the target allocated power of the third charging pile, calculate the difference between the rated power of the third charging pile and the allocated power of the third charging pile as the first difference, and use the difference between the total remaining power and the first difference as the target total remaining power.

2. The charging pile power allocation method based on the vehicle-mounted communication unit according to claim 1, characterized in that, The process of determining the online power of each charging pile based on its actual operating parameters includes: The sum of the products of the three-phase voltage and the three-phase current in the actual operating parameters of each charging pile is taken as the online power of each charging pile.

3. The charging pile power allocation method based on the vehicle-mounted communication unit according to claim 1, characterized in that, The step of determining the target allocated power and target total remaining power for each charging pile based on the total remaining power, the overload threshold, the adjustment speed, the allocated power of each charging pile, and the online power of each charging pile includes: If the total remaining power is greater than the negative value of the overload threshold and less than the third preset threshold, then the fourth charging pile among the plurality of charging piles is determined. The online power of the fourth charging pile is greater than the allocated power and the maintenance time exceeds the preset duration. The new allocated power of the fourth charging pile is set to 0, and the allocated power of the fourth charging pile is added to the total remaining power to obtain a new total remaining power. If the total remaining power is not greater than the negative value of the overload threshold, then the fifth charging pile among the plurality of charging piles is determined. The online power of the fifth charging pile is greater than the allocated power. The new allocated power of the fifth charging pile is set to 0, and the allocated power of the fifth charging pile is added to the total remaining power to obtain a new total remaining power. Determine whether the new total remaining power is less than a third preset threshold. If so, determine the target allocated power and target total remaining power of each charging pile based on the allocated power of each charging pile, the adjustment speed, and the new total remaining power.

4. The charging pile power allocation method based on the vehicle-mounted communication unit according to claim 3, characterized in that, The step of determining the target allocated power and target total remaining power for each charging pile based on the allocated power of each charging pile, the adjustment speed, and the new total remaining power includes: The charging pile recovery sequence is determined based on the charging order of each charging pile. Each charging pile in the charging pile recovery sequence is traversed. For the current first charging pile, the difference between the allocated power of the current first charging pile and the adjustment speed is taken as the new allocated power of the current first charging pile. The sum of the new total remaining power and the adjustment speed is taken as the total remaining power to be judged. It is determined whether the total remaining power to be judged is less than a fourth preset threshold. If it is, the next charging pile is traversed. Otherwise, the traversal is stopped, and the new allocated power of each charging pile is taken as the target allocated power, and the total remaining power to be judged is taken as the target total remaining power.

5. The charging pile power allocation method based on the vehicle-mounted communication unit according to claim 1, characterized in that, After allocating power to each charging pile according to the target power allocation and the target total remaining power, the method further includes: If a charging pile to be woken up is identified among the plurality of charging piles, and the target allocated power of the charging pile to be woken up is 0, and the target total remaining power is not 0, and the maintenance time is greater than the preset sleep time, then it is determined whether the target total remaining power is greater than the rated power of the charging pile to be woken up. If so, the rated power of the charging pile to be woken up is used as the wake-up allocated power of the charging pile to be woken up, and the difference between the target total remaining power and the rated power is used as the total remaining power for wake-up. If the target total remaining power is not greater than the rated power of the charging pile, but is greater than the preset minimum starting power, then the target total remaining power is used as the wake-up allocation power of the charging pile to be woken up, and the total remaining power for wake-up is set to 0, and the minimum starting power is less than the rated power of the charging pile. If the target total remaining power is not greater than the preset minimum starting power, then the wake-up allocation power and the wake-up total remaining power of each charging pile are determined according to the charging sequence of each charging pile, the target allocated power of each charging pile, the adjustment speed, and the target total remaining power. Adjust the power allocation of at least one charging pile according to the wake-up allocated power and the total remaining wake-up power.

6. The charging pile power allocation method based on the vehicle-mounted communication unit according to claim 5, characterized in that, The step of determining the wake-up allocation power and the total wake-up remaining power of each charging pile based on the charging sequence of each charging pile, the target allocated power of each charging pile, the adjustment speed, and the target total remaining power includes: The charging pile wake-up sequence is determined according to the charging order of each charging pile. Each charging pile in the wake-up sequence is traversed. For the current second charging pile, it is determined whether the target allocated power of the current second charging pile is greater than the sum of the minimum starting power and the adjustment speed. If so, the difference between the allocated power of the current second charging pile and the adjustment speed is taken as the new allocated power of the current second charging pile, and the new total remaining power is set as the sum of the target total remaining power and the adjustment speed. It is then determined whether the new total remaining power is greater than or equal to the minimum starting power. If not, the next charging pile is traversed. If so, the new total remaining power is taken as the wake-up allocated power of the charging pile to be woken up, and the total remaining wake-up power is set to 0.

7. A power distribution system, characterized in that, The power allocation system includes: a power allocation device, a detection device, multiple charging piles, and an intelligent charging cloud platform. The power allocation device is connected to the detection device, the multiple charging piles, and the intelligent charging cloud platform. The power allocation device is used to execute the charging pile power allocation method based on the vehicle communication unit as described in any one of claims 1-6.

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