Charging station rectifier cabinet power distribution method and system

Abstract

The present application provides a method and system for distributing power to a rectifier cabinet in a charging station, comprising: establishing a first pre-allocated power path between each of a plurality of charging guns and a directly connected power module to obtain a first pre-allocated power path set; determining a second pre-allocated power path set for each charging gun to obtain a plurality of second pre-allocated power path sets; processing the first pre-allocated power path set and the plurality of second pre-allocated power path sets according to a preset power module scheduling priority sorting strategy to obtain a third pre-allocated power path set that satisfies a preset power sum constraint; and updating the electrical connection relationship between the plurality of charging guns and the plurality of power modules according to the third pre-allocated power path set. The present application can effectively solve the path blocking problem when multiple charging piles share a rectifier cabinet, which is conducive to improving power utilization.

Description

Technical Field

[0001] The present application relates to the field of new energy power and energy storage technology, and in particular to a power distribution method and system for a rectifier cabinet in a charging station. Background Art

[0002] With the increasing popularity of new energy vehicles, demand for electric vehicle charging stations is rapidly increasing. Rectifier cabinets are core components in charging station systems, converting AC power into DC power for electric vehicle charging. Existing charging station systems commonly suffer from the following issues: Multiple charging station terminals share rectifier cabinets, potentially leading to uneven resource allocation and low utilization; low demand for some charging guns prevents idle modules in high-demand guns from being used, potentially wasting energy.

[0003] Current rectifier load management methods primarily rely on static or simple round-robin allocation strategies, lacking intelligent, real-time dynamic allocation strategies. Therefore, an efficient dynamic allocation method is needed that can meet user needs while improving rectifier utilization. Summary of the Invention

[0004] The present application provides a power distribution method and system for a charging station rectifier cabinet. The method establishes a first pre-allocated power path set between a charging gun and a directly connected power module, determines a second pre-allocated power path set in which each charging gun contains a different number of closed bus contactors, and then processes the above path sets according to a preset priority sorting strategy to obtain a third pre-allocated power path set that satisfies the constraint that the sum of the output power is greater than the current state. Finally, the electrical connection relationship between the charging gun and the power module is updated accordingly to optimize power distribution, achieve dynamic optimization of power paths, resolve path congestion, and improve system utilization.

[0005] In a first aspect, the present application provides a power distribution method for a rectifier cabinet of a charging station, which is applied to a rectifier cabinet controller of a charging station. The charging station includes multiple power modules, a rectifier cabinet, and multiple charging guns. The multiple power modules are electrically connected to the rectifier cabinet, and the rectifier cabinet is electrically connected to the multiple charging guns. The rectifier cabinet includes the rectifier cabinet controller and a contactor circuit. The contactor circuit includes multiple bus contactors electrically connected according to a preset topology. The method includes:

[0006] Establishing a first pre-allocated power path between each of the multiple charging guns and the direct-connected power module to obtain a first pre-allocated power path set;

[0007] Determine a second pre-allocated power path set for each charging gun in charge, and obtain multiple second pre-allocated power path sets, wherein a single second pre-allocated power path set includes multiple second pre-allocated power paths of a single charging gun in charge and multiple numbers of closed bus contactors corresponding one-to-one to the multiple second pre-allocated power paths;

[0008] processing the first pre-allocated power path set and the plurality of second pre-allocated power path sets according to a preset power module scheduling priority sorting strategy to obtain a third pre-allocated power path set that satisfies a preset power sum constraint, the third pre-allocated power path set including the first pre-allocated power path set and a fourth pre-allocated power path set, the fourth pre-allocated power path set including a second pre-allocated power path in the plurality of second pre-allocated power path sets;

[0009] The electrical connection relationship between the multiple charging guns and the multiple power modules is updated according to the third pre-allocated power path set.

[0010] In a second aspect, an embodiment of the present application provides a charging station rectifier cabinet power distribution system, the system comprising multiple power modules, a rectifier cabinet, and multiple charging guns, the multiple power modules being electrically connected to the rectifier cabinet, the rectifier cabinet being electrically connected to the multiple charging guns, the rectifier cabinet comprising a rectifier cabinet controller and a contactor circuit, the contactor circuit comprising multiple bus contactors electrically connected in accordance with a preset topology, wherein:

[0011] The rectifier cabinet controller is used to execute the steps of the method described in the first aspect above.

[0012] In a third aspect, an embodiment of the present application provides an electronic device comprising a processor, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the processor, and the programs include instructions for executing the steps in the first aspect of the embodiment of the present application.

[0013] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium having a computer program / instruction stored thereon, which is executed by a processor to implement the steps of the method described in the first aspect above.

[0014] As can be seen, in the embodiment of the present application, the rectifier cabinet controller establishes a first pre-allocated power path between each of the multiple charging guns and the directly connected power module to obtain a first pre-allocated power path set; determines a second pre-allocated power path set for each charging gun to obtain multiple second pre-allocated power path sets; processes the first pre-allocated power path set and the multiple second pre-allocated power path sets according to a preset power module scheduling priority sorting strategy to obtain a third pre-allocated power path set that satisfies a preset power sum constraint; and updates the electrical connection relationship between the multiple charging guns and the multiple power modules according to the third pre-allocated power path set. Thus, compared to existing rectifier cabinet load management solutions that use static allocation strategies or simple round-robin allocation strategies, the present application establishes pre-allocated paths between the charging guns and the directly connected power module, determines extended paths containing different numbers of closed bus contactors, and dynamically schedules the path sets according to a priority strategy. This effectively solves the path blocking problem when multiple charging piles share a rectifier cabinet, thereby improving system power utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0016] Figure 1 This is a system architecture diagram of a charging station rectifier cabinet power distribution system provided in an embodiment of the present application;

[0017] Figure 2 This is a structural block diagram of an electronic device provided in an embodiment of the present application;

[0018] Figure 3 This is a flowchart of the steps of a charging station rectifier cabinet power distribution method provided in an embodiment of the present application;

[0019] Figure 4 This is a flowchart of the steps of a third pre-allocated power path set determination strategy provided by an embodiment of the present application;

[0020] Figure 5 This is a flowchart of a first-round pre-allocation operation provided by an embodiment of the present application;

[0021] Figure 6 This is a schematic diagram of a star topology structure provided by an embodiment of the present application;

[0022] Figure 7 This is a schematic diagram of the structure of a star topology after the first round of pre-allocation operation provided by an embodiment of the present application;

[0023] Figure 8 This is a schematic structural diagram of a star topology after a second round of pre-allocation operation provided by an embodiment of the present application;

[0024] Figure 9 This is a schematic structural diagram of a star topology after the third round of pre-allocation operation provided by an embodiment of the present application;

[0025] Figure 10 This is a functional unit block diagram of a charging station rectifier cabinet power distribution system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0027] The terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish between different objects, not to describe a particular order. Furthermore, the terms "including," "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or elements is not limited to the listed steps or elements but may optionally include steps or elements not listed, or may optionally include other steps or elements inherent to the process, method, product, or apparatus.

[0028] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0029] In the embodiments of this application, "and / or" describes the relationship between associated objects and indicates that three relationships can exist. For example, "A and / or B" can represent the following three situations: A exists alone; A and B exist simultaneously; and B exists alone. A and B can be singular or plural.

[0030] In the embodiments of the present application, the symbol " / " can indicate that the preceding and following objects are in an "or" relationship. In addition, the symbol " / " can also represent a division sign, that is, performing a division operation. For example, A / B can mean A divided by B.

[0031] In the embodiments of the present application, "at least one item" or similar expressions refers to any combination of these items, including any combination of single items or plural items, and refers to one or more, and multiple refers to two or more. For example, at least one item (item) of a, b, or c can represent the following seven situations: a, b, c, a and b, a and c, b and c, a, b, and c. Among them, each of a, b, and c can be an element or a set containing one or more elements.

[0032] In the embodiments of this application, "equal to" can be used in conjunction with "greater than" and is applicable to the technical solution adopted when "greater than" is used, and can also be used in conjunction with "less than" and is applicable to the technical solution adopted when "less than" is used. When "equal to" is used in conjunction with "greater than", it should not be used in conjunction with "less than"; when "equal to" is used in conjunction with "less than", it should not be used in conjunction with "greater than".

[0033] Current rectifier load management methods primarily rely on static or simple round-robin allocation strategies, lacking intelligent, real-time dynamic allocation strategies. Therefore, an efficient dynamic allocation method is needed that can meet user needs while improving rectifier utilization.

[0034] In response to the above problems, an embodiment of the present application provides a method and system for distributing power to a rectifier cabinet in a charging station. The embodiment of the present application is described in detail below with reference to the accompanying drawings.

[0035] See also Figure 1 , Figure 1 This is a system architecture diagram of a charging station rectifier cabinet power distribution system provided by an embodiment of the present application, such as Figure 1 As shown, the system architecture diagram of the charging station rectifier cabinet power distribution system includes a power module 110, a rectifier cabinet 120 and a charging gun 130, wherein the rectifier cabinet 120 includes a rectifier cabinet controller 121 and a contactor circuit 122, and the contactor circuit 122 includes a bus contactor.

[0036] Among them, the number of power modules 110, charging guns 130 and bus contactors can be specifically set to multiple, multiple power modules 110 are electrically connected to the rectifier cabinet 120, the rectifier cabinet 120 is electrically connected to multiple charging guns 130, and the contactor circuit 122 includes multiple bus contactors with an electrical connection relationship constructed according to a preset topology.

[0037] Specifically, power module 110 is a device capable of storing or generating electrical energy, such as a common battery module consisting of multiple battery cells, or a converter capable of converting electrical energy. The electrical energy generated or stored by power module 110 is electrically transmitted to rectifier cabinet 120, which serves as the source of electrical energy for the entire charging station.

[0038] Specifically, the rectifier cabinet 120 is the core hub of the charging station's rectifier power distribution system. The rectifier cabinet controller 121 continuously monitors and collects status information from the power modules 110 (e.g., remaining battery capacity, output power, etc.) as well as the real-time requirements of each charging plug 130 (e.g., current charging power demand, whether a vehicle is connected, etc.). Based on this information, the rectifier cabinet controller 121 calculates and makes decisions based on a preset power distribution strategy, determining how to distribute the power of multiple power modules 110 to each charging plug to optimize overall system power utilization and avoid situations where some charging plugs 130 are underpowered while others are idle. The contactor circuit 122 is the executive unit of the rectifier cabinet 120 that implements power distribution control. The busbar contactor is essentially a controlled switching device that can quickly close or open under the control of the rectifier cabinet controller 121, thereby changing the circuit connection state.

[0039] Specifically, the charging gun 130 is the charging device used directly by users at the charging station. It is the terminal component that transmits electrical energy from the charging station to electrical devices such as electric vehicles. During the charging process, the charging gun 130 not only transmits electrical energy but also needs to communicate with the vehicle to monitor the charging status in real time and provide feedback to the rectifier cabinet controller 121. This allows the rectifier cabinet controller 121 to dynamically adjust the power distribution strategy based on actual conditions, ensuring a safe, stable, and efficient charging process.

[0040] It can be seen that in this embodiment, through the coordination of the power supply module, rectifier cabinet, rectifier cabinet controller, contactor circuit constructed according to the preset topology, bus contactor, and charging gun, the intelligent distribution and flexible regulation of the charging station power are realized, which can effectively improve the power utilization rate, solve the path blocking problem, reduce the algorithm complexity, reduce the risk of hardware switching, and ensure the safe, stable and efficient charging process.

[0041] See also Figure 2 , Figure 2 This is a block diagram of an electronic device provided in an embodiment of the present application, for executing Figure 1 The charging station rectifier cabinet power distribution system, such as Figure 2As shown, the electronic device 20 may include one or more of the following components: a memory 23, a processor 21, a communication bus 30, a communication interface 22, and one or more programs 231. The one or more programs 231 are stored on the memory 23 and are configured to be executed by the processor 21. The one or more programs 231 include instructions for executing any step in the following method embodiments. In a specific implementation, the processor 21 is used to execute any step in the following method embodiments, and when performing data transmission such as sending, the communication interface 22 may be selectively called to complete the corresponding operation. The electronic device 20 may be a mobile phone terminal, a tablet computer, a laptop computer, or a wearable smart device.

[0042] The processor 21 may include one or more processing cores. The processor 21 utilizes various interfaces and circuits to connect the various components within the electronic device 20. It executes instructions, programs, code sets, or instruction sets stored in the memory 23, as well as accesses data stored in the memory 23, to perform various functions and process data within the electronic device 20. Optionally, the processor 21 may be implemented using at least one of the following hardware forms: a digital signal processing (DSP), a field-programmable gate array (FPGA), or a programmable logic array (PLA). The processor 21 may integrate one or a combination of a central processing unit (CPU), a graphics processing unit (GPU), and a modem. The CPU primarily processes the operating system, user interface, and application programs; the GPU is responsible for rendering and drawing display content; and the modem handles wireless communications. It is understood that the modem may not be integrated into the processor 21 and may be implemented separately via a communication chip.

[0043] The memory 23 may include a random access memory (RAM) or a read-only memory (ROM). The memory 23 may be used to store instructions, programs, codes, code sets, or instruction sets. The memory 23 may include a program storage area and a data storage area, wherein the program storage area may store instructions for implementing an operating system, instructions for implementing at least one function (such as a touch function, a sound playback function, an image playback function, etc.), instructions for implementing the above-mentioned various method embodiments, etc. The data storage area may also store data created by the electronic device 20 during use.

[0044] It is understandable that the electronic device 20 may include more or fewer structural elements than those in the above structural block diagram, for example, a power module, physical buttons, a Wi-Fi module, a speaker, a Bluetooth module, a sensor, etc., which are not limited here.

[0045] See also Figure 3 , Figure 3 This is a flowchart of a method for distributing power to a rectifier cabinet in a charging station provided by an embodiment of the present application, which is applied to Figure 1 The rectifier cabinet controller 121 in the Figure 3 As shown, the method includes the following steps:

[0046] Step S310 : establishing a first pre-allocated power path between each of the multiple charging guns and the directly connected power supply module to obtain a first pre-allocated power path set.

[0047] Among them, by establishing a direct connection between the charging gun and the direct-connect power module, it is ensured that each charging gun obtains at least basic power support, avoiding power supply delays or interruptions caused by complex path scheduling; and the direct-connect path does not require additional closing of the main contactor, reducing the complexity of the initial allocation and providing a stable foundation for subsequent expanded allocation.

[0048] In a possible embodiment, the directly connected power supply module refers to a power supply module among the multiple power supply modules that is directly electrically connected to the charging gun being charged.

[0049] When establishing a direct connection path, the priority of the direct connection path can be dynamically adjusted based on real-time parameters such as module health status or temperature, rather than fixed allocation.

[0050] Among them, when establishing a direct connection path, some modules can be reserved as "elastic resources" to reserve space for subsequent high-priority needs.

[0051] It is understandable that allocating the most direct and reliable power module to each charging gun as the starting point for multiple rounds of pre-allocation ensures that basic requirements are met. By prioritizing directly connected modules, the number of optional paths to consider in subsequent rounds is reduced, optimizing algorithm efficiency. If the total power of the directly connected modules cannot meet the charging gun's requirements, multiple rounds of extended allocation are triggered in step S320.

[0052] Step S320 : determining a second pre-allocated power path set for each charging gun being charged, and obtaining a plurality of second pre-allocated power path sets.

[0053] The single second pre-allocated power path set includes multiple second pre-allocated power paths of a single charging gun and multiple numbers of closed bus contactors corresponding one-to-one to the multiple second pre-allocated power paths.

[0054] Among them, a single second pre-allocated power path includes the charging gun serial number that can form a power supply circuit for the charging gun, the module serial number of the non-directly connected power supply module, and the contactor serial number of the main contactor that needs to be closed. The number of single closed main contactors refers to the number of closed contactors of the main contactor that needs to be closed in the corresponding second pre-allocated power path.

[0055] The number of bus tie contactors that need to be closed in each second pre-allocated power path is recorded. This number reflects the complexity and control cost of the path and is an important consideration when sorting by priority. Generally speaking, the fewer the number of closed contactors, the simpler the path and the more likely it is to be given priority.

[0056] Specifically, for each charging gun in use, by analyzing and calculating the connection relationships of all non-directly connected power modules and corresponding bus contactors in the system, all possible combinations of power supply circuits are found, thereby determining multiple second pre-allocated power paths, which constitute the second pre-allocated power path set of a single charging gun.

[0057] It's important to understand that as charging progresses, both the power module's status (e.g., remaining charge, output power changes, etc.) and the charging connector's requirements (e.g., changes in power demand due to changes in the vehicle's battery charge) may change. The algorithm can be further optimized to dynamically update the second set of pre-allocated power paths in real time, ensuring the system always makes optimal power allocation decisions based on the latest status information.

[0058] It is understandable that step S320 provides multiple alternative paths for subsequent power path selection in addition to the direct path, which is an important basis for achieving dynamic and flexible power allocation. When the direct path cannot meet the power requirements of the charging gun, a suitable alternative path can be selected to supplement the power.

[0059] As can be seen, in this embodiment, information such as the number of closed bus contactors contained in each path in the second set of pre-allocated power paths serves as an important basis for subsequent path screening and sorting according to the preset power module scheduling priority ranking strategy. By processing these paths according to priority, power can be more rationally allocated, improving the overall power utilization and operating efficiency of the system.

[0060] Step S330 : Processing the first pre-allocated power path set and the plurality of second pre-allocated power path sets according to a preset power module scheduling priority ranking strategy to obtain a third pre-allocated power path set that meets a preset power sum constraint.

[0061] The third pre-allocated power path set includes the first pre-allocated power path set and a fourth pre-allocated power path set, and the fourth pre-allocated power path set includes the second pre-allocated power path in the plurality of second pre-allocated power path sets.

[0062] The preset power sum constraint condition means that the sum of the output powers of the multiple power modules called in the third pre-allocated power path set is greater than the sum of the output powers of the multiple charging guns in the current charging state.

[0063] It can be seen that in this embodiment, converting the initial path set into the optimal path combination that meets the power demand through priority sorting and constraint screening is the core decision-making link of the entire power allocation algorithm, achieving efficient scheduling and providing a clear execution plan for subsequent hardware control.

[0064] Step S340: updating the electrical connection relationship between the multiple charging plugs and the multiple power modules according to the third pre-allocated power path set.

[0065] Specifically, by releasing redundant connections and establishing new paths, the physical implementation of the third pre-allocated path set is achieved, ensuring that power is transmitted according to the optimized plan.

[0066] In a possible embodiment, updating the electrical connection relationship between the multiple charging guns and the multiple power modules according to the third pre-allocated power path set includes: releasing the power modules and bus contactors of the multiple charging guns except the directly connected power modules; and sequentially opening the power modules and bus contactors belonging to the charging guns in the fourth pre-allocated power path set.

[0067] If a path fails to open, it can quickly roll back to the direct connection path (the first pre-allocated path set) to ensure basic charging functions.

[0068] Among them, for non-conflicting paths, release / open operations are allowed to be performed simultaneously to shorten the switching time, and the current upper limit is dynamically adjusted during the switching process to reduce the impact of inrush current on the equipment.

[0069] In the process of updating the electrical connection relationship between the multiple charging guns and the multiple power modules, contactor action status detection can be added, and if the opening fails, an alternative path is automatically tried.

[0070] Furthermore, after the path is updated, the power monitoring module needs to be triggered to verify the allocation effect, such as detecting whether the actual power meets the requirements.

[0071] It can be seen that in this embodiment, by establishing a first pre-allocated power path set between the charging gun and the directly connected power supply module, and then determining a second pre-allocated power path set in which each charging gun contains a different number of closed bus contactors, and then processing the above path set according to the preset priority sorting strategy, a third pre-allocated power path set is obtained that satisfies the constraint that the sum of the output power is greater than the current state. Finally, the electrical connection relationship between the charging gun and the power supply module is updated accordingly to optimize power distribution, realize dynamic optimization of power paths, solve path congestion and improve system utilization.

[0072] See also Figure 4 , Figure 4 This is a flowchart of a strategy for determining a third pre-allocated power path set provided by an embodiment of the present application. In terms of processing the first pre-allocated power path set and the plurality of second pre-allocated power path sets according to a preset power module scheduling priority ranking strategy to obtain a third pre-allocated power path set that satisfies a preset power sum constraint, the method may further include the following steps:

[0073] Step S410: performing a first round of pre-allocation operation to obtain a first number of second pre-allocated power paths as first round candidate power paths.

[0074] Wherein, for the plurality of second pre-allocated power paths, a second pre-allocated power path having one contactor is collectively closed, and a first round of pre-allocation operation is performed.

[0075] Among them, the path with one closed contactor means that only one contactor needs to be switched to establish a power path. The hardware operation is simple and the loss is low. Giving priority to such paths can quickly optimize power distribution and reduce system switching risks.

[0076] In one possible embodiment, the candidate path determination strategy for the second pre-allocated power path of a single charging gun with 1 closed contactor includes the following constraints: Condition 1, priority is given to selecting the second pre-allocated power path to which the power module in the optional power module of the currently processed charging gun does not conflict with the optional power modules of other charging guns; Condition 2, if there are multiple non-conflicting paths, priority is given to selecting the second pre-allocated power path to which the power module is closest to the directly connected power module of the currently processed charging gun; Condition 3, priority is given to selecting the second pre-allocated power path to which the power of the power module in the second pre-allocated power path is less than or equal to the remaining required power of the currently processed charging gun.

[0077] Condition 1 aims to avoid conflicts. For example, if the optional first power module of the first charging gun is already occupied by the second charging gun, that path is excluded. For example, if the third charging gun in a star topology occupies the fifth power module, paths of other guns involving the fifth power module will conflict.

[0078] Condition 2 prioritizes distance. Distance refers to the physical connection between power modules in a topology (for example, in a star topology, directly connected modules serve as the central node, while indirectly connected modules have distance defined by hierarchy or cable length). Modules that are closer together can reduce cable losses and improve response speed.

[0079] Among them, condition 3 is to achieve power matching. If the module power is greater than the remaining demand of the charging gun, the module cannot be used at full power, resulting in resource waste. Therefore, only modules with power ≤ demand are selected. For example, if the remaining demand of the gun is 50kW, a 40kW module is preferred rather than an 80kW power module.

[0080] It can be seen that in this embodiment, the first round of pre-allocation operations processes the most easily implemented path, which may solve the needs of some charging guns and reduce the computing pressure of subsequent rounds; and, through the allocation of conflict-free paths, unoccupied modules are reserved for subsequent rounds (such as the second round processing the path of two contactors), avoiding global resource competition.

[0081] Step S420 , determining whether the remaining required power of the multiple charging guns under the constraints of the first round of candidate power paths and the first pre-allocated power path set is greater than zero, and whether there are unoccupied idle power modules among the multiple power modules.

[0082] Among them, the remaining required power is greater than zero, indicating that some charging guns still cannot meet the demand after the first round of allocation. The existence of unoccupied idle power modules in multiple power modules indicates that there are still unoccupied modules in the system and there is a resource basis for continued allocation.

[0083] Specifically, if yes, execute step S430.

[0084] In a possible embodiment, the method also includes: if it is detected that the remaining required powers of the multiple charging guns under the constraints of the first round of candidate power paths and the first pre-allocated power path set are all equal to zero, or there is no unoccupied idle power module among the multiple power modules, then determining the sum of the output powers of the multiple charging guns under the constraints of the first round of candidate power paths and the first pre-allocated power path set; if it is detected that the sum of the output powers is greater than the sum of the output powers of the multiple charging guns in the current charging state, then merging the first round of candidate power paths and the first pre-allocated power path set into the third pre-allocated power path set; if it is detected that the sum of the output powers is not greater than the sum of the output powers of the multiple charging guns in the current charging state, then maintaining the current charging state of the charging guns in the charging state.

[0085] The purpose of detecting that the sum of the output powers is greater than the sum of the output powers of the multiple charging guns in the current charging state is to ensure that the allocated power is redundant and avoid power shortage due to measurement error or load fluctuation.

[0086] Among them, when it is detected that the sum of the output powers is not greater than the sum of the output powers of the multiple charging guns in the current charging state, the system does not perform path switching, but maintains the current charging state of the charging guns in the charging state, avoiding invalid or harmful hardware operations, such as insufficient power after switching.

[0087] As can be seen, this embodiment, through the power verification and state decision-making mechanism, ensures the safe termination and execution of the multi-round pre-allocation algorithm. Its core value lies in balancing power requirements and hardware operating costs. Dynamic verification avoids invalid switching, improving system reliability and resource utilization.

[0088] Step S430 : performing a second round of pre-allocation operation to obtain a second number of second pre-allocated power paths as second round candidate power paths.

[0089] The second round of pre-allocation operation is performed for a second pre-allocated power path having 1 closed contactor and not selected as a candidate among the plurality of second pre-allocated power paths and a second pre-allocated power path having 2 closed contactors.

[0090] In one possible embodiment, the candidate path determination strategy for the second pre-allocated power path in the second round of pre-allocation operation includes the following constraints: Condition 1, priority is given to selecting the second pre-allocated power path to which the power module in the optional power module of the charging gun currently being processed does not conflict with the optional power modules of other charging guns being processed belongs; Condition 2, if there are multiple non-conflicting paths, priority is given to selecting the second pre-allocated power path to which the power module that is closest to the directly connected power module of the charging gun currently being processed belongs; Condition 3, priority is given to selecting the second pre-allocated power path in which the power of the power module in the second pre-allocated power path is less than or equal to the remaining required power of the charging gun currently being processed.

[0091] Specifically, when implementing the three constraints above, for paths with one closed contactor that were not considered candidates and were not selected due to conflicts in the first round, these paths will be prioritized in the current round if they do not conflict with the assigned paths. Paths with two closed contactors are considered as a suboptimal choice and are only used when a single contactor path is insufficient, balancing hardware complexity and power requirements.

[0092] It can be seen that in this embodiment, available paths are further explored based on the first round, which not only controls hardware complexity but also improves the flexibility of power allocation. This progressive path expansion strategy can solve the power optimization problem of charging stations, making the algorithm both efficient and reliable in practical applications.

[0093] Step S440 , determining whether the remaining required power of the multiple charging guns under the constraints of the first round candidate power paths, the second round candidate power paths, and the first pre-allocated power path set is greater than zero, and whether there are unoccupied idle power modules among the multiple power modules.

[0094] Specifically, if yes, execute step S450.

[0095] In a possible embodiment, the method also includes: if it is detected that the remaining required powers of the multiple charging guns under the constraints of the first round of candidate power paths, the second round of candidate power paths and the first pre-allocated power path set are all equal to zero, or there are unoccupied idle power modules among the multiple power modules, then determining the sum of the output powers of the multiple charging guns under the constraints of the first round of candidate power paths, the second round of candidate power paths and the first pre-allocated power path set; if it is detected that the sum of the output powers is greater than the sum of the output powers of the multiple charging guns in the current charging state, then merging the first round of candidate power paths, the second round of candidate power paths and the first pre-allocated power path set into the third pre-allocated power path set; if it is detected that the sum of the output powers is not greater than the sum of the output powers of the multiple charging guns in the current charging state, then maintaining the current charging state of the charging guns in the charging state.

[0096] Among them, after each round of pre-allocation operation, it is necessary to determine whether the remaining required power is greater than zero and whether there are unoccupied idle power modules among multiple power modules, and the core concept of the processing method executed when it is not satisfied is consistent.

[0097] Specifically, the judgment and processing operations after the second round of pre-allocation operations have been analyzed in detail in the aforementioned processing steps after the first round of pre-allocation operations, and will not be repeated here.

[0098] Step S450 : performing a third round of pre-allocation operation to obtain a third number of second pre-allocated power paths as candidate power paths for the third round.

[0099] Among them, a third round of pre-allocation operation is performed for the second pre-allocated power path with 1 concentrated closed contactor and not selected as a candidate, the second pre-allocated power path with 2 closed contactors and not selected as a candidate, and the second pre-allocated power path with 3 closed contactors.

[0100] In the third round of pre-allocation, the aforementioned constraints 1, 2, and 3 are still enforced. However, if a path with one closed contactor exists and is not considered a candidate, it will be prioritized. If there are insufficient paths with one closed contactor that are not considered a candidate, a path with two closed contactors that are not considered a candidate will be considered. The path with three closed contactors is used as a last resort and only when necessary.

[0101] In a possible embodiment, the controller may also execute a fourth round, a fifth round, and so on, which is not limited here.

[0102] Specifically, the constraint on the number of contactors is gradually relaxed in each round. For example, the Nth round processes unselected paths with a closure number of 1 to N, and always follows the constraints of conflict avoidance, distance priority, and power matching. The termination conditions are that the system stops when all charging gun requirements are met or there are no idle modules, or when the preset maximum number of rounds is reached.

[0103] It can be seen that in this embodiment, deep path expansion is performed in the final stage of multiple rounds of pre-allocation, which not only ensures power supply in extreme scenarios but also controls hardware operating costs through the priority strategy.

[0104] Step S460 , determining whether the remaining required powers of the multiple charging guns under the constraints of the first round of candidate power paths, the second round of candidate power paths, the third round of pre-allocation operations, and the first pre-allocated power path set are all equal to zero, or whether there are no unoccupied idle power modules among the multiple power modules.

[0105] Specifically, if yes, execute step S470.

[0106] Step S470 : determining the sum of the output powers of the plurality of charging guns under the constraints of the first round candidate power paths, the second round candidate power paths, the third round candidate power paths, and the first pre-allocated power path set.

[0107] If the fourth, fifth or more rounds of pre-allocation operations can be performed, it is necessary to determine the sum of the output powers of multiple charging guns under the constraints of multiple rounds of candidate power paths and the first pre-allocated power path set.

[0108] Step S480 , determining whether the sum of the output powers is greater than the sum of the output powers of the multiple charging guns in the current charging state.

[0109] Specifically, if yes, execute step S490.

[0110] In a possible embodiment, the method further includes: if it is detected that the sum of the output powers is not greater than the sum of the output powers of the multiple charging guns in their current charging states, maintaining the current charging state of the charging guns.

[0111] The current charging state of the charging gun is maintained, thereby avoiding invalid or harmful hardware operations, such as insufficient power after switching.

[0112] Step S490: merging the first-round candidate power paths, the second-round candidate power paths, the third-round candidate power paths, and the first pre-allocated power path set into a third pre-allocated power path set.

[0113] The candidate paths (including low-complexity and high-complexity paths) screened out in each round are merged with the initial direct path set to form the final power allocation solution.

[0114] Furthermore, the merging process addresses issues such as path conflicts and power redundancy, generating executable hardware control instructions. If a module is selected by multiple paths, the higher-priority path is retained (e.g., a single contactor path takes precedence over three contactor paths). If the power of a lower-priority path is already covered by a higher-priority path, the lower-priority path is discarded.

[0115] It can be seen that in this embodiment, by establishing a pre-allocated path between the charging gun and the direct-connected power module, determining the extended path containing different numbers of closed bus contactors, and dynamically scheduling the path set according to the priority strategy, the path blocking problem when multiple charging piles share a rectifier cabinet can be effectively solved, which is conducive to improving the system power utilization.

[0116] See also Figure 5 , Figure 5 : is a flowchart of a first round of pre-allocation operation provided by an embodiment of the present application. In terms of performing the first round of pre-allocation operation, the above method may further include the following steps:

[0117] Step S510 : determining the number of second pre-allocated power paths in which the number of closed contactors of each charging gun in charge is 1, and obtaining a plurality of path numbers corresponding one-to-one to the plurality of charging guns in charge.

[0118] Among them, a single second pre-allocated power path includes the charging gun serial number that can form a power supply circuit for the charging gun, the module serial number of the non-directly connected power supply module, and the contactor serial number of the main contactor that needs to be closed. The number of single closed main contactors refers to the number of closed contactors of the main contactor that needs to be closed in the corresponding second pre-allocated power path.

[0119] Step S520 : determining the candidate path allocation priorities of the plurality of charging guns in charge according to the number of the plurality of paths, wherein the number of paths is negatively correlated with the candidate path allocation priorities.

[0120] Among them, the priority of candidate path allocation is used to determine the processing order of charging guns. The charging guns with fewer paths have higher priorities, and charging guns with limited selection are given priority.

[0121] In one possible embodiment, the candidate path allocation priority includes the following priorities from high to low: first priority, the charging gun with fewer paths has higher priority; second priority, when the number of paths is the same, the charging gun with larger remaining required power is given priority; third priority, when the number of paths is the same and the remaining required power is the same, the charging gun with the same power module number as other charging guns with a smaller number is given priority; fourth priority, when the number of paths is the same and the remaining required power is the same and the number of power module numbers is the same as other charging guns, the charging gun with a smaller number is given priority.

[0122] For example, the system has five charging guns, numbered first through fifth. The number of paths in the second pre-allocated power path, with a closed contactor number of 1, is 1, 2, 2, 2, and 3, respectively. The remaining power requirements are 80, 60, 70, 70, and 50, respectively. The number of power modules shared with other guns is 1, 2, 1, 1, and 0, respectively. Based on the first priority level, the order is first, second, third, and fourth, and fifth. For the second, third, and fourth guns, based on the second priority level, the order is third, fourth, and second. For the third and fourth guns, based on the third priority level, they are determined to be identical, and are then sorted according to the fourth priority level, third and fourth. The final order of charging gun processing is first, third, fourth, second, and fifth.

[0123] It can be seen that in this embodiment, through the four-layer priority rules, the system can generate a stable charging gun processing order in complex scenarios, which not only ensures allocation efficiency but also avoids decision ambiguity through deterministic rules. It is a key mechanism for balancing fairness and efficiency in multi-gun power allocation.

[0124] Step S530: Determine a first number of second pre-allocated power paths as first-round candidate power paths according to the candidate path allocation priorities.

[0125] Among them, when determining the first number of second pre-allocated power paths as the first round of candidate power paths for multiple charging guns according to the above processing order, it is necessary to select the most suitable power module for each charging gun based on the above constraints 1 / 2 / 3.

[0126] Furthermore, if a second and / or third round of pre-allocation operations is required, in each round of pre-allocation operations, it is necessary to first determine the processing order of multiple charging guns based on the above four priorities, and then select the most suitable power module for each charging gun based on the above constraints 1 / 2 / 3. However, the second pre-allocation power path participating in each round of operation is different. For example, the second round needs to target the second pre-allocation power path with 1 closed contactor and not selected as a candidate, and the second pre-allocation power path with 2 closed contactors. When constraints 1 / 2 / 3 are applicable, differentiated adjustments need to be made according to the paths participating in the operation, such as giving priority to the path with 1 closed contactor in the second round, and then considering the path with 2 closed contactors.

[0127] It can be seen that in this embodiment, by establishing a first pre-allocated power path set between the charging gun and the directly connected power supply module, and then determining a second pre-allocated power path set in which each charging gun contains a different number of closed bus contactors, and then processing the above path set according to the preset priority sorting strategy, a third pre-allocated power path set is obtained that satisfies the constraint that the sum of the output power is greater than the current state. Finally, the electrical connection relationship between the charging gun and the power supply module is updated accordingly to optimize power distribution, realize dynamic optimization of power paths, solve path congestion and improve system utilization.

[0128] See also Figure 6 , Figure 6 A schematic diagram of a star topology structure provided in an embodiment of the present application is shown in FIG. Figure 6 As shown, the star topology is a star topology corresponding to a rectifier cabinet with 12 inputs and 8 outputs of power switching.

[0129] The star topology includes the first to twelfth power modules, the first to fourth charging guns, and multiple bus tie contactors M1-M24. Each charging gun is directly connected to a power module. Specifically, the first charging gun is directly connected to the first power module, the second charging gun is directly connected to the third power module, the third charging gun is directly connected to the fifth power module, and the fourth charging gun is directly connected to the sixth power module. This forms four first pre-allocated power paths, resulting in a first pre-allocated power path set.

[0130] The contactor circuit can be electrically connected according to the following preset topologies: matrix topology, ring topology, cross-ring topology, and star topology.

[0131] For example, if the maximum output power of each power module is 80 kW, and the required power of the first to fourth charging guns are 235 kW, 200 kW, 240 kW and 240 kW respectively, then if the existing static allocation strategy or the simple polling allocation strategy is followed, the first charging gun can be jointly powered by the first / second / fourth power modules, the second charging gun can be jointly powered by the third / eleventh / twelfth power modules, the third charging gun can be jointly powered by the fifth / eighth / ninth power modules, and the fourth charging gun can be jointly powered by the sixth / seventh power modules. The tenth power module cannot be used by the fourth charging gun due to path blocking problems. The total utilization rate of the current system is (235+200+240+160) KW / 960 Kw≈86.98%.

[0132] If multiple power modules are dynamically allocated according to the power distribution method of the charging station rectifier cabinet provided in this application, the first charging gun - occupying the first power module - the remaining required power is 155KW, the second charging gun - occupying the third power module - the remaining required power is 120KW, the third charging gun - occupying the fifth power module - the remaining required power is 160KW, and the fourth charging gun - occupying the sixth power module - the remaining required power is 160KW.

[0133] Furthermore, for a plurality of second pre-allocated power paths with a second pre-allocated power path having 1 contactor, a schematic diagram of a star topology after the first round of pre-allocation operation is shown in FIG. Figure 7 ,like Figure 7 As shown, Figure 7 This is a structural diagram of a star topology after a first round of pre-allocation operation provided in an embodiment of the present application.

[0134] The process of executing the first round of pre-allocation operations specifically includes first determining the number of paths for each charging gun to close one bus contactor, and then determining the call priority based on the number of paths. Please refer to the first call priority table provided below:

[0135] First call priority table

[0136]

[0137] Furthermore, the power module corresponding to the most suitable second pre-allocated power path is allocated to the charging gun in the order of the first calling priority.

[0138] Among them, for the fourth charging gun, since the seventh / ninth power modules do not conflict with the optional power modules of the first / second / third charging guns, the seventh power module with a serial number close to the sixth power module is selected, and then it is determined that the fourth charging gun occupies the sixth / seventh power modules and the remaining required power is 80KW; for the third charging gun, since the second / fourth power modules coincide with the optional power modules of the first / second charging guns, the eighth power module is selected, and then it is determined that the third charging gun occupies the fifth / eighth power modules and the remaining required power is 80KW; for the second charging gun, since the second / fourth / twelfth power modules all coincide with the optional power modules of the first charging gun, the fourth power module with a serial number close to the third power module is selected, and then it is determined that the second charging gun occupies the third / fourth power modules and the remaining required power is 40KW; for the first charging gun, since the second / twelfth power modules coincide with the second charging gun, the tenth power module is selected, and then it is determined that the first charging gun occupies the first / tenth power modules and the remaining required power is 75KW.

[0139] It can be seen that in this embodiment, after the first round of pre-allocation operation, the first charging gun is allocated to the first and tenth power modules, the second charging gun is allocated to the second and fourth power modules, the third charging gun is allocated to the fifth and eighth power modules, and the fourth charging gun is allocated to the sixth and seventh power modules.

[0140] Furthermore, since the remaining required power is greater than 0 and there are unoccupied idle power modules, a second round of pre-allocation operation needs to be performed. The structural diagram of the star topology after the second round of pre-allocation operation can be seen in Figure 8 ,like Figure 8 As shown, Figure 8 This is a structural diagram of a star topology after a second round of pre-allocation operation provided in an embodiment of the present application.

[0141] The process of executing the second round of pre-allocation operation specifically includes first determining the number of second pre-allocated power paths for each charging gun with 1 closed contactor and not selected as candidates, and the number of second pre-allocated power paths with 2 closed contactors. Then, the calling priority can be determined based on the number of paths. Please refer to the second calling priority table provided below:

[0142] Second call priority table

[0143]

[0144] Furthermore, the power module corresponding to the most suitable second pre-allocated power path is allocated to the charging gun in the order of the second calling priority.

[0145] Among them, for the fourth charging gun, it is determined that the fourth charging gun occupies the sixth / seventh / ninth power module and the remaining required power is 0KW; for the second charging gun, since the remaining required power cannot make the second power module output at full power, the power module occupation is temporarily abandoned in this round, and the second charging gun occupies the third / fourth power module and the remaining required power is 40KW; for the third charging gun, since the second power module coincides with the first / second charging guns, and the eleventh power module coincides with the first charging gun, the eleventh power module is selected, and then the third charging gun is determined to occupy the fifth / eighth / eleventh power module and the remaining required power is 0KW; for the first charging gun, since the remaining required power cannot make the second or twelfth power module output at full power, the module occupation is temporarily abandoned in this round, and the first charging gun occupies the first / tenth power module and the remaining required power is 75KW.

[0146] It can be seen that in this embodiment, after the second round of pre-allocation operation, the first charging gun remains allocated to the first and tenth power modules, the second charging gun remains allocated to the second and fourth power modules, the third charging gun is allocated to the fifth, eighth and eleventh power modules, and the fourth charging gun is allocated to the sixth, seventh and ninth power modules.

[0147] Furthermore, the remaining required power of the first and second charging guns is greater than 0 and there are unoccupied idle power modules, so a third round of pre-allocation operation needs to be performed. The structural diagram of the star topology after the third round of pre-allocation operation can be seen in Figure 9 ,like Figure 9 As shown, Figure 9 This is a structural diagram of a star topology after the third round of pre-allocation operation provided in an embodiment of the present application.

[0148] The process of executing the third round of pre-allocation operation specifically includes first determining the number of second pre-allocated power paths for each charging gun with 1 closed contactor and not selected as candidates, the number of second pre-allocated power paths with 2 closed contactors and not selected as candidates, and the number of second pre-allocated power paths with 3 closed contactors. Then, the calling priority can be determined based on the number of paths. Please refer to the third calling priority table provided below:

[0149] Third call priority table

[0150]

[0151] Furthermore, the most suitable power module corresponding to the second pre-allocated power path is allocated to the charging gun in the order of the third calling priority.

[0152] Among them, for the second charging gun, it is determined that the second charging gun occupies the third / fourth / second power module and the remaining required power is 0 KW; for the first charging gun, it is determined that the first charging gun occupies the first / tenth / twelfth power module and the remaining required power is 0 KW.

[0153] As can be seen, after three rounds of pre-allocation operations, multiple third pre-allocated power path sets can be determined, with the first charging gun occupying the first, tenth, and twelfth power modules, the second charging gun occupying the third, fourth, and second power modules, the third charging gun occupying the fifth, eighth, and eleventh power modules, and the fourth charging gun occupying the sixth, seventh, and ninth power modules. Furthermore, the pre-allocated estimated system utilization = (235 + 200 + 240 + 240) kW / 960 kW ≈ 95.31%. Therefore, it is determined that the pre-allocated estimated system utilization is greater than the current system utilization, and each gun occupies different modules and paths. Therefore, the electrical connection relationships between the multiple charging guns and the multiple power modules can be updated according to the third pre-allocated power path set.

[0154] It can be seen that in this embodiment, by establishing a first pre-allocated power path set between the charging gun and the directly connected power supply module, and then determining a second pre-allocated power path set in which each charging gun contains a different number of closed bus contactors, and then processing the above path set according to the preset priority sorting strategy, a third pre-allocated power path set is obtained that satisfies the constraint that the sum of the output power is greater than the current state. Finally, the electrical connection relationship between the charging gun and the power supply module is updated accordingly to optimize power distribution, realize dynamic optimization of power paths, solve path congestion and improve system utilization.

[0155] See also Figure 10 , Figure 10 This is a functional unit block diagram of a charging station rectifier cabinet power distribution system provided in an embodiment of the present application, such as Figure 10 As shown, the system includes the following units:

[0156] Processing unit 1100 is used to establish a first pre-allocated power path between each of a plurality of charging guns in charging and a directly connected power supply module to obtain a first pre-allocated power path set; determine a second pre-allocated power path set for each of the charging guns in charging to obtain a plurality of second pre-allocated power path sets, wherein a single second pre-allocated power path set includes a plurality of second pre-allocated power paths of a single charging gun and a plurality of closed bus contactors corresponding one-to-one to the plurality of second pre-allocated power paths; process the first pre-allocated power path set and the plurality of second pre-allocated power path sets according to a preset power supply module scheduling priority sorting strategy to obtain a third pre-allocated power path set that meets a preset power sum constraint, wherein the third pre-allocated power path set includes the first pre-allocated power path set and a fourth pre-allocated power path set, and the fourth pre-allocated power path set includes the second pre-allocated power paths in the plurality of second pre-allocated power path sets.

[0157] The updating unit 1200 is configured to update the electrical connection relationship between the multiple charging guns and the multiple power modules according to the third pre-allocated power path set.

[0158] In one embodiment, in terms of processing the first pre-allocated power path set and the multiple second pre-allocated power path sets according to the preset power module scheduling priority sorting strategy to obtain a third pre-allocated power path set that meets the preset power sum constraint, the processing unit 1100 is specifically used to: for the second pre-allocated power path with 1 closed contactor in the multiple second pre-allocated power path sets, perform a first round of pre-allocation operation to obtain a first number of second pre-allocated power paths as the first round of candidate power paths; if it is detected that the multiple charging guns are in the first round of candidate power paths and the first pre-allocated power path set If the remaining required power under the constraints of the first round candidate power path, the second round candidate power path and the first pre-allocated power path set are greater than zero, and there are unoccupied idle power modules among the multiple power modules, a second round of pre-allocated power paths with 1 closed contactor and not selected as candidates and a second pre-allocated power path with 2 closed contactors are performed, and a second number of second pre-allocated power paths as second-round candidate power paths are obtained; if it is detected that the remaining required power of the multiple charging guns under the constraints of the first round candidate power path, the second round candidate power path and the first pre-allocated power path set is greater than zero, and the multiple power modules are If there is an unoccupied idle power module in the group, a third round of pre-allocation operation is performed for the second pre-allocated power path with 1 closed contactor and not selected as a candidate, the second pre-allocated power path with 2 closed contactors and not selected as a candidate, and the second pre-allocated power path with 3 closed contactors in the plurality of second pre-allocated power paths, to obtain a third number of second pre-allocated power paths as the third round of candidate power paths; if it is detected that the multiple charging guns are in the first round of candidate power paths, the second round of candidate power paths, the third round of pre-allocation operation and the first pre-allocated power path set If the remaining required power under the constraints is equal to zero, or there is no unoccupied idle power module among the multiple power modules, the sum of the output powers of the multiple charging guns under the constraints of the first round of candidate power paths, the second round of candidate power paths, the third round of candidate power paths and the first pre-allocated power path set is determined; if it is detected that the sum of the output powers is greater than the sum of the output powers of the multiple charging guns in the current charging state, the first round of candidate power paths, the second round of candidate power paths, the third round of candidate power paths and the first pre-allocated power path set are merged into the third pre-allocated power path set.

[0159] In one embodiment, in terms of processing the first pre-allocated power path set and the multiple second pre-allocated power path sets according to a preset power module scheduling priority sorting strategy to obtain a third pre-allocated power path set that satisfies a preset power sum constraint, the processing unit 1100 is further used to: if it is detected that the remaining required powers of the multiple charging guns under the constraints of the first round of candidate power paths and the first pre-allocated power path set are all equal to zero, or there are no unoccupied idle power modules among the multiple power modules, then determine the sum of the output powers of the multiple charging guns under the constraints of the first round of candidate power paths and the first pre-allocated power path set; if it is detected that the sum of the output powers is greater than the sum of the output powers of the multiple charging guns in the current charging state, then merge the first round of candidate power paths and the first pre-allocated power path set into the third pre-allocated power path set; if it is detected that the sum of the output powers is not greater than the sum of the output powers of the multiple charging guns in the current charging state, then maintain the current charging state of the charging guns.

[0160] In one embodiment, in the aspect of processing the first pre-allocated power path set and the multiple second pre-allocated power path sets according to a preset power module scheduling priority ranking strategy to obtain a third pre-allocated power path set that satisfies a preset power sum constraint, the processing unit 1100 is further configured to: if it is detected that the remaining required powers of the multiple charging guns under the constraints of the first round of candidate power paths, the second round of candidate power paths, and the first pre-allocated power path set are all equal to zero, or there are unoccupied idle power modules among the multiple power modules, determine the sum of the output powers of the multiple charging guns under the constraints of the first round of candidate power paths, the second round of candidate power paths, and the first pre-allocated power path set; if it is detected that the sum of the output powers is greater than the sum of the output powers of the multiple charging guns in the current charging state, merge the first round of candidate power paths, the second round of candidate power paths, and the first pre-allocated power path set into the third pre-allocated power path set; and if it is detected that the sum of the output powers is not greater than the sum of the output powers of the multiple charging guns in the current charging state, maintain the current charging state of the charging guns.

[0161] In one embodiment, in terms of the first round of pre-allocation operations, the processing unit 1100 is specifically used to: determine the number of paths of the second pre-allocated power path in which the number of closed contactors of each charging gun is 1, and obtain multiple numbers of paths corresponding one-to-one to the multiple charging guns; determine the candidate path allocation priorities of the multiple charging guns according to the multiple numbers of paths, and the number of paths is negatively correlated with the candidate path allocation priorities; and determine a first number of second pre-allocated power paths as the first round of candidate power paths according to the candidate path allocation priorities.

[0162] In one embodiment, in terms of updating the electrical connection relationship between the multiple charging guns and the multiple power modules according to the third pre-allocated power path set, the update unit 1200 is specifically used to: release the power modules and bus contactors of the multiple charging guns except the directly connected power modules; and sequentially open the power modules and bus contactors belonging to the charging guns in the fourth pre-allocated power path set.

[0163] It can be seen that in this embodiment, by establishing a first pre-allocated power path set between the charging gun and the directly connected power supply module, and then determining a second pre-allocated power path set in which each charging gun contains a different number of closed bus contactors, and then processing the above path set according to the preset priority sorting strategy, a third pre-allocated power path set is obtained that satisfies the constraint that the sum of the output power is greater than the current state. Finally, the electrical connection relationship between the charging gun and the power supply module is updated accordingly to optimize power distribution, realize dynamic optimization of power paths, solve path congestion and improve system utilization.

[0164] In addition, an embodiment of the present application also provides a computer storage medium, which stores a computer program that can be loaded by a processor and executed such as the above-mentioned charging station rectifier cabinet power distribution method. The computer-readable storage medium includes, for example: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and other media that can store program codes.

[0165] It should be noted that for the aforementioned method embodiments, for the sake of simplicity, they are all expressed as a series of action combinations, but those skilled in the art should be aware that this application is not limited by the order of the actions described, because according to this application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by this application.

[0166] In the several embodiments provided in this application, it should be understood that the disclosed methods, devices, and systems can be implemented in other ways. For example, the device embodiments described above are merely schematic; for example, the division of the units is merely a logical function division, and there may be other division methods in actual implementation; for example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, indirect coupling or communication connection of devices or units, which may be electrical, mechanical, or other forms.

[0167] The units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment. In addition, the functional units in the various embodiments of the present invention may be integrated into a processing unit, or each unit may be physically included separately, or two or more units may be integrated into a single unit. The above-mentioned integrated units may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0168] The above-mentioned integrated unit implemented as a software functional unit can be stored in a computer-readable storage medium. The software functional unit is stored in a storage medium and includes instructions for causing a computer device (which can be a personal computer, server, or network device, etc.) to perform some of the steps of the method described in various embodiments of the present invention. The aforementioned storage medium includes a USB flash drive, a mobile hard drive, a magnetic disk, an optical disk, a volatile memory, or a non-volatile memory. The non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or flash memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of random access memory (RAM) are available, such as static RAM (SRAM), dynamic random access memory (DRAM), synchronous DRAM (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link DRAM (SLDRAM), and direct RAM bus random access memory (DRRAM), among other media that can store program code.

[0169] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0170] The above is a detailed introduction to the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for those skilled in the art, according to the idea of ​​the present application, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

[0171] Although the present application discloses the above, the present application is not limited thereto. Any person skilled in the art may readily conceive of variations or substitutions, and may make various changes and modifications, including combinations of the above-mentioned functions and implementation steps, including software and hardware implementations, without departing from the spirit and scope of the present application, and all are within the scope of protection of the present application.

Claims

1. A method for distributing power to a rectifier cabinet in a charging station, characterized in that: A rectifier cabinet controller applied to a charging station, the charging station comprising multiple power modules, a rectifier cabinet, and multiple charging guns, the multiple power modules being electrically connected to the rectifier cabinet, the rectifier cabinet being electrically connected to the multiple charging guns, the rectifier cabinet comprising the rectifier cabinet controller and a contactor circuit, the contactor circuit comprising multiple bus-tie contactors electrically connected according to a preset topology, the method comprising: Establishing a first pre-allocated power path between each of the multiple charging guns and the direct-connected power module to obtain a first pre-allocated power path set; Determine a second pre-allocated power path set for each charging gun in charge, and obtain multiple second pre-allocated power path sets, wherein a single second pre-allocated power path set includes multiple second pre-allocated power paths of a single charging gun in charge and multiple numbers of closed bus contactors corresponding one-to-one to the multiple second pre-allocated power paths; For the plurality of second pre-allocated power paths, a second pre-allocated power path having one contactor is concentratedly closed, performing a first round of pre-allocation operations to obtain a first number of second pre-allocated power paths as first-round candidate power paths; If it is detected that the remaining required power of the multiple charging guns under the constraints of the first round of candidate power paths and the first pre-allocated power path set is greater than zero, and there is an unoccupied idle power module among the multiple power modules, then a second round of pre-allocated operations is performed for the second pre-allocated power path in the multiple second pre-allocated power paths set that has 1 closed contactor and is not selected as a candidate, and the second pre-allocated power path that has 2 closed contactors, to obtain a second number of second pre-allocated power paths as second-round candidate power paths; If it is detected that the remaining required power of the multiple charging guns under the constraints of the first round of candidate power paths, the second round of candidate power paths, and the first pre-allocated power path set is greater than zero, and there is an unoccupied idle power module among the multiple power modules, then a third round of pre-allocated operations is performed for the second pre-allocated power path in the multiple second pre-allocated power paths set that has 1 closed contactor and is not selected as a candidate, the second pre-allocated power path that has 2 closed contactors and is not selected as a candidate, and the second pre-allocated power path that has 3 closed contactors, to obtain a third number of second pre-allocated power paths as the third round of candidate power paths; If it is detected that the remaining required powers of the multiple charging guns under the constraints of the first round of candidate power paths, the second round of candidate power paths, the third round of pre-allocation operations, and the first pre-allocated power path set are all equal to zero, or there are no unoccupied idle power modules among the multiple power modules, then the sum of the output powers of the multiple charging guns under the constraints of the first round of candidate power paths, the second round of candidate power paths, the third round of candidate power paths, and the first pre-allocated power path set is determined; If it is detected that the sum of the output powers is greater than the sum of the output powers of the multiple charging guns in the current charging state, the first round of candidate power paths, the second round of candidate power paths, the third round of candidate power paths, and the first pre-allocated power path set are merged into a third pre-allocated power path set that meets the preset power sum constraint condition, the third pre-allocated power path set includes the first pre-allocated power path set and a fourth pre-allocated power path set, and the fourth pre-allocated power path set includes the second pre-allocated power path in the multiple second pre-allocated power path sets; The electrical connection relationship between the multiple charging guns and the multiple power modules is updated according to the third pre-allocated power path set.

2. The method according to claim 1, characterized in that The method further comprises: If it is detected that the remaining required powers of the multiple charging guns under the constraints of the first round of candidate power paths and the first pre-allocated power path set are all equal to zero, or there is no unoccupied idle power module among the multiple power modules, then determining the sum of the output powers of the multiple charging guns under the constraints of the first round of candidate power paths and the first pre-allocated power path set; If it is detected that the sum of the output powers is greater than the sum of the output powers of the multiple charging guns in the current charging state, merging the first round of candidate power paths and the first pre-allocated power path set into the third pre-allocated power path set; If it is detected that the sum of the output powers is not greater than the sum of the output powers of the multiple charging guns in the current charging state, the current charging state of the charging guns in the current charging state is maintained.

3. The method according to claim 1 or 2, characterized in that The method further comprises: If it is detected that the remaining required powers of the multiple charging guns under the constraints of the first round of candidate power paths, the second round of candidate power paths, and the first pre-allocated power path set are all equal to zero, or there are unoccupied idle power modules among the multiple power modules, then the sum of the output powers of the multiple charging guns under the constraints of the first round of candidate power paths, the second round of candidate power paths, and the first pre-allocated power path set is determined; If it is detected that the sum of the output powers is greater than the sum of the output powers of the multiple charging guns in the current charging state, merging the first round of candidate power paths, the second round of candidate power paths, and the first pre-allocated power path set into the third pre-allocated power path set; If it is detected that the sum of the output powers is not greater than the sum of the output powers of the multiple charging guns in the current charging state, the current charging state of the charging guns in the current charging state is maintained.

4. The method according to claim 1, wherein The first round of pre-allocation operation includes the following processing steps: Determining the number of second pre-allocated power paths in which the number of closed contactors of each charging gun in use is 1, and obtaining a plurality of numbers of paths corresponding one-to-one to the plurality of charging guns in use; determining a priority level for allocating candidate paths to the multiple charging guns according to the number of the multiple paths, wherein the number of paths is negatively correlated with the priority level for allocating candidate paths; A first number of second pre-allocated power paths are determined as first-round candidate power paths according to the candidate path allocation priorities.

5. The method according to claim 4, characterized in that The candidate path determination strategy for the second pre-allocated power path with one closed contactor of a charging gun in a single charging operation includes the following constraints: Condition 1: preferentially selecting the second pre-allocated power path to which the power module of the currently processed charging gun belongs that does not conflict with the power modules of other charging guns; Condition 2: If there are multiple non-conflicting paths, the second pre-allocated power path to which the power module closest to the directly connected power module of the charging gun currently being charged belongs is preferentially selected; Condition 3: preferentially select a second pre-allocated power path in which the power of the power module is less than or equal to the remaining required power of the charging gun currently being charged.

6. The method according to claim 1, characterized in that Updating the electrical connection relationship between the plurality of charging guns and the plurality of power modules according to the third pre-allocated power path set includes: releasing the power modules and bus contactors of the plurality of charging guns being charged except for the directly connected power modules; The power modules and bus contactors of the charging gun in the fourth pre-allocated power path are sequentially turned on.

7. The method according to claim 1, characterized in that The preset topology includes any one of the following: a matrix topology, a ring topology, a cross-ring topology, and a star topology.

8. The method according to claim 1, characterized in that The directly connected power supply module refers to a power supply module among the multiple power supply modules that is directly electrically connected to the charging gun during charging; A single second pre-allocated power path includes the serial number of the charging gun that can form a power supply circuit for the charging gun, the module serial number of the non-directly connected power module, and the contactor serial number of the bus contactor that needs to be closed. The number of closed bus contactors refers to the number of closed contactors of the bus contactor that needs to be closed in the corresponding second pre-allocated power path; The preset power sum constraint condition means that the sum of the output powers of the multiple power modules called in the third pre-allocated power path set is greater than the sum of the output powers of the multiple charging guns in the current charging state.

9. A charging station rectifier cabinet power distribution system, characterized in that: Multiple power modules, rectifier cabinets, and multiple charging guns, wherein the multiple power modules are electrically connected to the rectifier cabinets, and the rectifier cabinets are electrically connected to the multiple charging guns. The rectifier cabinets include a rectifier cabinet controller and a contactor circuit. The contactor circuit includes multiple bus contactors that are electrically connected according to a preset topology. The rectifier cabinet controller is used to execute the steps in any one of the methods according to claims 1-8.

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