Modularized direct current charging pile with power pool scheduling function and control method thereof

Abstract

The invention provides a modularized direct current charging pile with a power pool scheduling function and a control method thereof, and the charging pile comprises at least one modularized single charging pile which comprises a plurality of plugging power modules, a shared power pool structure, a plurality of first type charging guns, and a power manager. A plurality of plugging power modules of any modular single charging pile form a single annular structure through a shared power pool structure, or a plurality of plugging power modules of at least two modular single charging piles form a shared annular structure, and the first type of charging guns of the at least two modular single charging piles are bridged through a bridging structure; and the power manager obtains the charging demand information of the charging object, and schedules the plugging power module from the monomer ring structure or the shared ring structure according to the charging demand information so as to charge the charging object, so that the power resource utilization rate can be improved, the equipment expansibility can be enhanced, and dynamic power scheduling can be realized.

Description

Technical Field

[0001] The present invention relates to the technical field of electric vehicle charging equipment, and in particular to a modular direct current charging pile with a power pool scheduling function and a control method thereof. Background Art

[0002] In the existing technology, electric vehicle charging equipment is mainly divided into two categories: single-type DC piles and split-type charging piles, but both have obvious limitations: Single-pile DC charging piles utilize a fixed power design, with their internal plug-in power modules tied to the charging gun, preventing cross-pile power sharing. During peak charging periods, when a single pile's power cannot meet the high power demands of a vehicle, the idle power of other piles cannot be utilized, limiting charging speeds. During off-peak periods, a large number of plug-in power modules remain idle, resulting in low resource utilization. Furthermore, the fixed power configuration of single-pile DC charging piles makes it difficult to flexibly adapt to the diverse power requirements of different vehicle models. Furthermore, expansion and renovation require a complete equipment replacement, which is costly and complex.

[0003] While split-type charging stacks offer a certain degree of power dispatching capability, they require the separate deployment of independent power cabinets and charging terminals. This not only increases construction difficulty and deployment costs, but also results in the charging terminals being limited in functionality, serving only as power output interfaces and unable to operate independently. Furthermore, their fixed power pool structure necessitates comprehensive adjustments to the power cabinets and terminals for expansion, making it difficult to flexibly add or subtract equipment based on actual charging needs, resulting in poor adaptability.

[0004] In summary, existing charging equipment generally has problems such as low resource utilization, inability to flexibly adapt to diverse power demands, and difficulty in expansion and transformation, making it difficult to meet the needs of efficient operation of charging stations and use in diversified scenarios. Summary of the Invention

[0005] The present invention provides a modular DC charging pile with a power pool scheduling function and a control method thereof, which are used to solve the problems of low resource utilization, inflexible adaptation to diverse power demands, difficulty in expansion and transformation, and other defects in the prior art, which make it difficult to meet the requirements of efficient operation of charging stations and use in diverse scenarios.

[0006] In one aspect, the present invention provides a modular DC charging pile with a power pool scheduling function, comprising: At least one modular single charging pile and bridge structure; Each modular single-unit charging pile includes multiple plug-in power modules, a shared power pool structure, multiple first-class charging guns and a power manager; The multiple pluggable power modules of any modular single-unit charging pile form a single ring structure through the shared power pool structure, or the multiple pluggable power modules in at least two modular single-unit charging piles form a shared ring structure, and the first-type charging guns of at least two modular single-unit charging piles are bridged by the bridge structure; The power manager obtains charging demand information of the charging object by using the first type of charging gun, and schedules the plug-in power module from the single ring structure or the shared ring structure according to the charging demand information to charge the charging object.

[0007] According to a modular DC charging pile with a power pool scheduling function provided by the present invention, the power manager schedules the plugging and unplugging of power modules based on preset rules; The preset rules include: Selecting a pluggable power module directly connected to the used first-type charging gun as a first target pluggable power module; If the power of the first target pluggable power module is less than the charging power requirement of the charging object, if there are idle pluggable power modules adjacent to the first target pluggable power module in the forward or backward direction along the ring, at least one adjacent idle pluggable power module is selected as the second target pluggable power module; If the sum of the power of the first target plug-in power module and the power of the second target plug-in power module is less than the required charging power, at least one idle plug-in power module that is not adjacent to the first target plug-in power module is selected as the third target plug-in power module through the bridging structure, so that the total power of the selected target plug-in power modules is greater than or equal to the required charging power.

[0008] According to a modular DC charging pile with a power pool scheduling function provided by the present invention, the power manager is further configured to: If the status of the first target plug-in power module is occupied, and the modular single-unit charging pile corresponding to the first target plug-in power module has a charging power demand, the first target plug-in power module is controlled to stop charging other charging objects, and the plug-in power modules are rescheduled for the other charging objects.

[0009] According to a modular DC charging pile with a power pool scheduling function provided by the present invention, the number of modular single charging piles is an even number; Every two modular single-unit charging piles are divided into a pair; the first type charging guns of each pair of modular single-unit charging piles are bridged by the bridging structure.

[0010] According to a modular DC charging pile with a power pool scheduling function provided by the present invention, each modular single charging pile further includes: The expansion structure is used to increase or reduce the number of pluggable power modules.

[0011] According to the present invention, a modular DC charging pile with a power pool scheduling function further includes a second type of charging gun; The second type of charging gun is detachably connected to the pluggable power module.

[0012] According to a modular DC charging pile with a power pool scheduling function provided by the present invention, the second-type charging guns of at least two modular single-unit charging piles are bridged by the bridge structure.

[0013] According to the present invention, a modular DC charging pile with a power pool scheduling function further includes a user guidance device; The power manager is also used to determine the schedulable power of each modular single-unit charging pile according to the status of the plug-in power module of each modular single-unit charging pile, and output it to the user through the user guidance device to guide the user to select a modular single-unit charging pile.

[0014] According to a modular DC charging pile with a power pool scheduling function provided by the present invention, the power manager is further configured to: Determine the total number of schedulable pluggable power modules based on the status of the pluggable power modules of each modular single charging pile; Based on the preset line loss, select the required number of plug-in power modules; The dispatchable power of each modular single charging pile is determined based on the required number of plug-in power modules.

[0015] On the other hand, the present invention further provides a control method for a modular DC charging pile with a power pool scheduling function, which is applied to any of the above-mentioned modular DC charging piles with a power pool scheduling function, and the method includes: Obtain charging demand information of the charging object by using the first type of charging gun; According to the charging demand information, power modules are scheduled to be plugged in and out from the single ring structure, or power modules are scheduled to be plugged in and out from the shared ring structure, so as to charge the charging object.

[0016] The modular DC charging pile with power pool scheduling function and its control method provided by the present invention realize a single or shared ring power pool through modular single charging piles and a bridging structure, and dynamically allocate pluggable power modules in combination with an intelligent scheduling strategy, thereby solving the problems of low power resource utilization and poor scalability of traditional charging equipment. It has the advantages of improving power resource utilization, enhancing equipment scalability and realizing dynamic power scheduling. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a structural diagram of a modular DC charging pile with a power pool scheduling function provided by an embodiment of the present invention; Figure 2 This is another structural diagram of a modular DC charging pile with a power pool scheduling function provided by an embodiment of the present invention; Figure 3 This is another structural diagram of a modular DC charging pile with a power pool scheduling function provided by an embodiment of the present invention; Figure 4 This is another structural diagram of a modular DC charging pile with a power pool scheduling function provided by an embodiment of the present invention; Figure 5 This is a flow chart of a control method for a modular DC charging pile with a power pool scheduling function provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0019] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0020] In existing technologies, electric vehicle charging equipment has long faced problems with low resource utilization and poor scalability. Single-unit DC charging piles use a fixed power design, with internal plug-in power modules tied to the charging gun, making it impossible to share power across charging piles. This results in limited charging speeds during peak periods and idle plug-in power modules during off-peak periods. While split charging piles offer power dispatching capabilities, they require separate deployment of power cabinets and charging terminals, making construction difficult and expansion challenging. When charging stations need to accommodate the diverse power requirements of different vehicle models, existing equipment struggles to flexibly adjust power configurations, and expansion and renovation require costly hardware replacement.

[0021] To address the above issues, it is necessary to design a charging device that can operate independently while also being flexibly scalable. Analysis of existing technical bottlenecks revealed that the core contradiction lies in the lack of a fixed binding and scheduling mechanism for pluggable power modules. If the charging pile is split into a modular single-cell structure, with each cell integrating a pluggable power module and a charging gun, and power sharing achieved through a ring connection, the power limitations of a single pile can be overcome. Further considering the coordinated scheduling between multiple cells, a bridging structure is introduced to break through physical boundaries, forming a shared power pool across cells, thereby achieving dynamic allocation of power resources. This design preserves the ability of the cells to operate independently while allowing for on-demand expansion of power capacity, addressing resource utilization and scalability issues.

[0022] Therefore, the present invention proposes a modular DC charging pile with power pool scheduling function, wherein: Figure 1 This is a structural diagram of a modular DC charging pile with a power pool scheduling function provided by an embodiment of the present invention. Figure 2 This is another structural diagram of a modular DC charging pile with a power pool scheduling function provided by an embodiment of the present invention.

[0023] like Figures 1 to 2 As shown, the modular DC charging pile with power pool scheduling function provided by the embodiment of the present invention may include at least one modular single-unit charging pile and a bridge structure. Each modular single-unit charging pile includes multiple plug-in power modules 11, a shared power pool structure 12, multiple first-class charging guns 13 and a power manager (not shown in the figure). The plug-in power modules 11 of any single unit form a single-unit ring structure (such as Figure 1 As shown), or multiple plug-in power modules 11 in at least two modular single charging piles form a shared ring structure, and the first type charging gun 13 is bridged by a bridge structure (as shown Figure 2 As shown), the bridge structure may include a bridge contactor, such as Figure 2 The first bridge contactor Kq1 and the second bridge contactor Kq3 are connected. The power manager obtains charging demand information through the first type charging gun 13 and schedules the plug-in power module 11 from the single ring structure or the shared ring structure for charging.

[0024] Figure 1 The middle plug-in power module 11 includes 4 plug-in power modules, which are respectively recorded as the first plug-in power module M1 to the fourth plug-in power module M4, and the shared power pool structure 12 includes 4 ring structure contactors, which are recorded as the first ring structure contactor K1 to the fourth ring structure contactor K4. There are 2 first-type charging guns, which are recorded as the first charging gun A1 and the second charging gun A3. The first charging gun A1 is directly connected to the first plug-in power module M1 through the first on-off control contactor KA1, and the second charging gun A3 is directly connected to the third plug-in power module M3 through the second on-off control contactor KA3.

[0025] Figure 2 The plug-in power module 11 includes 8 plug-in power modules, which are respectively recorded as the first plug-in power module M1 to the eighth plug-in power module M8; the shared power pool structure 12 includes 8 ring structure contactors, which are recorded as the first ring structure contactor K1 to the eighth ring structure contactor K8; there are 4 first-class charging guns, which are recorded as the first charging gun A1, the second charging gun A3, the third charging gun B1, and the fourth charging gun B3; each charging gun is directly connected to the corresponding plug-in power module through its corresponding on-off control contactor.

[0026] Among them, modular single-unit charging pile refers to a charging unit that can operate independently. Each unit has a built-in plug-in power module 11 and a charging interface. It can be implemented with a standardized cabinet structure to facilitate rapid deployment and maintenance. For example, the shell of the modular single-unit charging pile can adopt an IP54 protection grade sheet metal box with a dual-gun structure and independently carry a plug-in power module. The bridge structure refers to a switch that connects different units. It can be implemented with a bridge contactor to expand the power pool range (such as Figure 2 The first bridge contactor Kq1 and the second bridge contactor Kq3 in the ). The plug-in power module 11 refers to a detachable power conversion unit, which can be implemented by a power electronic module with a slide rail installation, supporting hot-swappable replacement. The shared power pool structure 12 refers to a switch for the power distribution network that integrates multiple plug-in power modules 11, which can be implemented by a ring structure contactor. The first type of charging gun 13 refers to a charging interface fixedly connected to a single unit, which can specifically adopt a DC charging gun that complies with the national standard protocol to obtain dynamically allocated power through a shared power pool.

[0027] Specifically, when a single charging gun is connected to a vehicle, the power manager identifies the vehicle's power requirements and prioritizes scheduling adjacent plug-in power modules from the ring structure of the unit to which it belongs. If the power within a unit is insufficient, the bridge structure interconnects the ring structures of adjacent units to form a shared ring network across units, from which the power manager can call idle plug-in power modules. For example, during peak charging periods, the power demand of a vehicle exceeds the capacity of a single pile. The system uses a bridge structure to merge the plug-in power modules of two adjacent units into a shared ring, dynamically allocating multiple modules for collaborative power supply. When capacity expansion is required, the new unit is connected to the existing network through the bridge structure, and the shared power pool automatically expands the coverage without the need to modify the original equipment.

[0028] Compared with the existing technology, single-body DC piles cannot realize cross-pile resource scheduling due to the fixed binding of plug-in power modules. The present invention uses a ring structure and a bridging design to enable the plug-in power modules to be flexibly combined within a single body or across single bodies. Split-type charging piles require separate deployment of power cabinets and terminals. The present invention integrates the plug-in power module 11 into the single-body charging pile, which not only retains the ability to operate independently, but also realizes the advantages of split-type scheduling through bridging. Existing equipment expansion requires the overall replacement of hardware. The present invention supports the on-demand addition and reduction of single bodies and plug-in power modules through modular design, significantly reducing the cost of transformation.

[0029] Through the above-mentioned technical solution, the present invention achieves dynamic scheduling of power resources within and across cells, improving equipment utilization and reducing idle waste. Charging piles can automatically match pluggable power modules 11 based on real-time demand, adapting to the diverse charging needs of different vehicle models. The modular design supports rapid expansion of power capacity, eliminating the need for downtime and modification when adding cells or plugging in power modules 11, reducing operational and maintenance complexity.

[0030] In a specific implementation process, the present invention further proposes a modular DC charging pile with a power pool scheduling function, and the power manager schedules the plug-in power module 11 based on preset rules; the preset rules include: selecting a plug-in power module directly connected to the first type of charging gun 13 being used as the first target plug-in power module; if the power of the first target plug-in power module is less than the charging requirement power of the charging object, in the forward or backward direction along the ring, if there are idle plug-in power modules adjacent to the first target plug-in power module in sequence, select at least one adjacent idle plug-in power module as the second target plug-in power module; if the sum of the power of the first target plug-in power module and the power of the second target plug-in power module is less than the charging requirement power, select at least one idle plug-in power module that is not adjacent to the first target plug-in power module as the third target plug-in power module through the bridging structure, so that the total power of the selected target plug-in power module is greater than or equal to the module.

[0031] Among them, the first target plug-in power module refers to a plug-in power module directly connected to the charging gun being used, which can be achieved through a physical connection or a communication link. Its function is to give priority to the use of local power resources to reduce line losses. The second target plug-in power module refers to an idle module adjacent to the first target module, which can be achieved through adjacent node detection in a ring topology structure. Its function is to expand the power supply range nearby. The third target plug-in power module refers to an idle plug-in power module across modules that is scheduled through a bridging structure. It can be achieved through a cross-pile connection. Its function is to break through the power limit of a single charging pile. A bridging structure refers to a switch that connects different modular single charging piles, and its function is to realize the sharing and scheduling of cross-pile power resources.

[0032] Specifically, when the charging demand is triggered, the power manager first detects the available power of the plug-in power module directly connected to the charging gun being used. If the power of the plug-in power module is insufficient, the adjacent idle plug-in power modules are searched forward or backward along the ring structure for superposition. If the total power after superposition still cannot meet the demand, the idle plug-in power modules in other modular single-unit charging piles are called through the bridging structure. For example, when the charging demand power is 200kW, if the first target module provides 80kW and the adjacent second target module provides 60kW, if 60kW is still required, one or more third target modules are selected from another modular single-unit charging pile through the bridging structure for supplementation. Thus, the scheduling of charging power follows the priority order from local to adjacent and then to cross-module to achieve dynamic resource allocation.

[0033] For example, Figure 1 The charging vehicle connected to the second charging gun A3 is a small new energy vehicle / small battery hybrid vehicle, and the power of one plug-in power module 11 can meet its charging needs. The first charging gun A1 is a pure electric large battery vehicle, which requires three plug-in power modules 11 to power it to meet its charging needs. At this time, only the third plug-in power module M3 can be assigned to the second charging gun A3 for charging, that is, the second on-off control contactor KA3 can be closed, and the first plug-in power module M1 + the second plug-in power module M2 + the fourth plug-in power module M4 are all assigned to the first charging gun A1 for charging, that is, the first on-off control contactor KA1, the first ring structure contactor K1, the second ring structure contactor K2, and the fourth ring structure contactor K4 can be closed. If a pure electric large battery vehicle requires four plug-in power modules to power it to meet its charging needs, since the plug-in power module M2 is occupied, at this time, it can be used Figure 2 The first bridge contactor Kq1 in the second modular single charging pile can dispatch the fifth plug-in power module M5 and other plug-in power modules.

[0034] Compared with the existing technology, existing split charging piles can only schedule plug-in and unplug power modules within a fixed power cabinet, cannot call resources across devices, and power expansion requires overall transformation. However, the present invention uses a ring structure and bridging design to enable plug-in power modules to be expanded adjacently within a single unit or scheduled across piles, and the power supply range can be dynamically adjusted without changing the physical layout of the equipment. For example, if a charging pile has insufficient power in the existing technology, the power cabinet configuration must be manually adjusted, while the present invention achieves instant capacity expansion by automatically searching for adjacent and cross-pile modules.

[0035] Through the above-mentioned technical solution, the present invention can dynamically allocate pluggable power modules based on charging demand, avoiding charging delays or idle resources caused by local power shortages. For example, during peak hours, idle pluggable power modules in multiple charging piles can work together through a bridge structure to quickly meet the charging needs of high-power vehicles. During off-peak hours, unused modules can maintain a low-power state to reduce energy consumption. As a result, the power utilization of the charging pile is significantly improved, while reducing the equipment redundancy caused by fixed power configurations.

[0036] In a specific implementation process, the present invention further proposes a modular DC charging pile with a power pool scheduling function. When the status of the first target plug-in power module is occupied, the modular single-unit charging pile corresponding to the first target plug-in power module has a charging power demand, and the first target plug-in power module is controlled to stop charging other charging objects, and the plug-in power modules are rescheduled for other charging objects.

[0037] Among them, the first target plug-in power module refers to the plug-in power module that is directly connected to the charging gun being used. Specifically, it can be implemented by an electrical connection status detection circuit to identify the physical connection relationship between the module and the charging gun. The status of occupied means that the plug-in power module is currently supplying power to other vehicles. Specifically, it can be detected by current sensors or communication protocol interactions to determine whether the module is in working condition. Rescheduling the plug-in power module refers to allocating new available plug-in power modules to vehicles whose power supply is interrupted. Specifically, it can be implemented by a ring topology path search algorithm to find alternative power supply resources in the power pool.

[0038] Specifically, when a user initiates a charging request through a first-class charging gun, the power manager first detects the status of the plug-in power module directly connected to the charging gun. If the plug-in power module is already occupied, its current power supply link is immediately cut off, and the power pool scheduling mechanism is triggered at the same time to search for idle modules along the ring structure as alternative power supply units, so as to automatically switch to the newly assigned plug-in power module to continue charging the previous vehicle. The entire process does not require human intervention. For example, when a plug-in power module is supplying power to car A, if car B requests charging through the charging gun directly connected to the plug-in power module, the plug-in power module will be used to charge car B first, and other plug-in power modules will be dispatched for car A to ensure that car A can charge normally.

[0039] Compared with existing technologies, traditional charging piles can only prompt charging failure or wait when the plug-in power module is occupied, and cannot actively release resources and reallocate them. The present invention uses a dynamic interruption and rescheduling mechanism to prioritize the use of plug-in power modules directly connected to the charging gun to charge the vehicle. In other words, the present invention realizes the dynamic release and reallocation of plug-in power modules, so as to prioritize the use of plug-in power modules directly connected to the charging gun to charge the vehicle, reducing line losses.

[0040] In a specific implementation process, the present invention further proposes that the number of modular single-unit charging piles is an even number, every two modular single-unit charging piles are divided into a pair, and the first type of charging guns of each pair of modular single-unit charging piles are bridged by a bridging structure.

[0041] Specifically, when the charging pile system contains an even number of modular single-unit charging piles, they can be paired in pairs, and the first type of charging guns of each pair of modular single-unit charging piles can be bridged through a bridging structure. In this way, the even-numbered paired design optimizes the layout of the bridging structure, reduces the "charging dead zone" in the ring topology (such as avoiding the inability to schedule modules due to the isolation of a single pile), and the paired bridging improves the coverage and scheduling efficiency of modules across piles, making the complementary resources of adjacent piles more balanced.

[0042] For example, Figure 2 The two modular single charging piles form a pair, the first charging gun A1 is bridged with the third charging gun B1, and the second charging gun A3 is bridged with the fourth charging gun B3.

[0043] Figure 3This is another structural diagram of a modular DC charging pile with a power pool scheduling function provided by an embodiment of the present invention. The plug-in power module 11 includes 16 plug-in power modules, which are respectively recorded as the first plug-in power module M1 to the sixteenth plug-in power module M16, and the shared power pool structure 12 includes sixteen ring structure contactors, which are recorded as the first ring structure contactor K1 to the sixteenth ring structure contactor K16. There are 8 first-class charging guns, which are recorded as the first charging gun A1, the second charging gun A3, the third charging gun B1, the fourth charging gun B3, the fifth charging gun A5, the sixth charging gun B5, the seventh charging gun A7, and the eighth charging gun B7.

[0044] like Figure 3 As shown, the first modular single-cell charging pile and the third modular single-cell charging pile are a pair, the first charging gun A1 is bridged with the third charging gun B1 through the first bridge contactor Kq1, the second charging gun A3 is bridged with the fourth charging gun B3 through the second bridge contactor Kq3, the second modular single-cell charging pile and the fourth modular single-cell charging pile are a pair, the fifth charging gun A5 is bridged with the sixth charging gun B5 through the third bridge contactor Kq5, and the seventh charging gun A7 is bridged with the eighth charging gun B7 through the fourth bridge contactor Kq7. Examples are not given one by one here.

[0045] In a specific implementation process, the present invention further proposes a modular DC charging pile with a power pool scheduling function, and each modular single-unit charging pile also includes an expansion structure for adding plug-in power modules or reducing plug-in power modules 11.

[0046] The expansion structure is a component used to dynamically adjust the number of pluggable power modules 11 within the charging pile. This can be achieved using a modular interface or guide rail structure, with standardized slots designed to allow plug-and-play operation of the power modules. This structure allows for flexible addition and removal of power modules 11 based on actual needs without affecting overall system operation, thus resolving the existing issue of fixed power configurations requiring complete equipment replacement for capacity expansion.

[0047] Specifically, the extension structure is integrated into the physical framework of the modular single-unit charging pile, and its interface is compatible with the shared power pool structure. When the charging demand increases, a new plug-in power module 11 can be inserted into the single-unit charging pile through the extension structure. The newly added module is automatically connected to the ring structure and included in the scheduling range of the power manager; when the demand decreases, the idle module can be removed to reduce energy consumption. For example, during peak charging periods, operators can quickly install additional plug-in power modules through the guide rail structure. The power manager will automatically identify the newly added modules and update the schedulable power data; during low periods, after removing some modules, the remaining modules can still maintain the integrity of the ring structure. The extension structure works in conjunction with the bridging structure so that the increase or decrease of the plug-in power module 11 will not interrupt the power supply process of other charging guns.

[0048] Compared to existing technologies, traditional split-type charging piles require simultaneous adjustments to both the power cabinet and charging terminals during expansion, resulting in complex and costly construction. However, the modular expansion structure of the present invention only requires local adjustments at the individual charging pile level, eliminating the need for complete equipment replacement or rewiring. For example, while existing technologies require shutting down and replacing the entire power cabinet to increase power capacity, the present invention supports online hot-swappable operation, allowing expansion to continue without affecting ongoing charging services.

[0049] Through the above technical solution, the present invention achieves dynamic adaptation of the charging pile power capacity, solving the resource waste problem caused by the fixed power configuration of existing equipment. In scenarios where vehicle charging demand fluctuates, the actual load can be matched in real time by adding and removing the power module 11, avoiding the idle loss of redundant modules during low-peak periods and reducing charging delays caused by insufficient power during peak periods. In addition, this structure simplifies the equipment maintenance process, and operation and maintenance personnel can regularly optimize module configuration based on site operation data to improve the overall energy efficiency of the equipment.

[0050] In a specific implementation process, the present invention further proposes that the modular DC charging pile with power pool scheduling function also includes a second type of charging gun, which is detachably connected to the pluggable power module. Specifically, Figure 4 This is another structural diagram of a modular DC charging pile with a power pool scheduling function provided by an embodiment of the present invention, such as Figure 4 As shown, the second-type charging gun 14 does not have its own pluggable power module 11. Instead, it is detachably connected to the pluggable power module 11 of the modular single-unit charging pile to charge the vehicle. The second-type charging gun 14 may include a ninth charging gun A2 and a tenth charging gun A4. The ninth charging gun A2 is connected to the ninth on-off control contactor KA2, and the tenth charging gun A4 is connected to the tenth on-off control contactor KA4.

[0051] It should be noted that only Figure 1The second type of charging gun is added as an example to illustrate the actual application. Figure 2 、 Figure 3 As well as the increase in the number of other modular single-unit charging piles, I will not list them one by one here.

[0052] The second-type charging gun 14 is an independent charging interface that functions separately from the first-type charging gun 13. Specifically, it can be implemented using a standardized quick-release interface, physically connected to the pluggable power module via a mechanical latch. A detachable connection refers to the use of a separable electrical and mechanical coupling between the charging gun and the pluggable power module. Specifically, it can be quickly plugged in and out using a slide rail slot and elastic contacts, automatically disconnecting the circuit when the charging gun is detached.

[0053] Specifically, when the number of charging guns is insufficient, the second-type charging gun 14 can be inserted into the modular single-unit charging pile and connected to the idle plug-in power module, so that more vehicles can be served. For example, during peak charging, all the first-type charging guns are occupied, but there are still idle plug-in power modules. At this time, new vehicles can use the second-type charging gun 14 to insert into the modular single-unit charging pile and connect to the idle plug-in power module to charge. In this way, the charging pile can adapt to more scenarios.

[0054] In a specific implementation process, the present invention further proposes to include a user guidance device, in which the power manager determines the schedulable power according to the status of the plug-in power module of each modular single-unit charging pile, and outputs it through the user guidance device to guide the user to select the modular single-unit charging pile.

[0055] Among them, the user guidance device refers to an interactive device for transmitting charging pile status information to the user, which can be implemented by an LED display, an indicator light array or a mobile terminal interactive interface, and guides the user to an available charging pile through visual or auditory signals. Dispatchable power refers to the power capacity that can be currently allocated to the modular single-unit charging pile. Specifically, it can be obtained by counting the sum of the rated powers of the idle plug-in power modules and combining the line loss to reflect the real-time power supply capacity of the charging pile. The status of the modular single-unit charging pile includes the working status and connection status of the plug-in power module 11. Specifically, it can be monitored in real time by a current sensor, a voltage detection circuit or a communication protocol to determine whether the plug-in power module is in an idle, occupied or faulty state.

[0056] Specifically, when a charging vehicle enters a charging station, the power manager monitors the current output status and communication connection status of the plug-in power modules in each modular single-unit charging pile, and counts the number of idle plug-in power modules currently available for each charging pile in real time. After the rated power of each idle plug-in power module is accumulated, the actual dispatchable power value of the charging pile is calculated in combination with the preset line loss coefficient. The dispatchable power information is transmitted to the user guidance device, and the location identification of each charging pile and its corresponding available power value are displayed through a graphical interface. Users select a charging pile that can meet the charging needs of their own vehicle according to the available power distribution marked on the display screen, avoiding wasted waiting time caused by blindly selecting a fully loaded or low-power charging pile.

[0057] Compared to existing technologies, traditional charging stations lack user guidance mechanisms. Users cannot intuitively access the real-time power supply capacity of each charging station, which can easily lead to high-power vehicles mistakenly selecting low-power charging stations, resulting in insufficient power and the need for rescheduling during charging. This invention, however, makes the power resource status of charging stations transparent through dynamic monitoring and visual guidance. Users can independently select the appropriate charging facility based on real-time data, effectively reducing power scheduling and equipment idle time.

[0058] Through the above technical solution, the present invention solves the technical problem of charging users being unable to quickly match charging piles. By displaying the available power information of each charging pile in real time, users are guided to prioritize charging piles with sufficient power supply capacity, which not only shortens vehicle charging waiting time but also improves the utilization rate of pluggable power modules. This solution can evenly distribute the load across charging piles during peak hours and, during off-peak hours, guide the concentrated use of some charging piles, reducing the overall standby energy consumption of the equipment.

[0059] In a specific implementation process, the present invention further proposes that the power manager is also used to determine the total number of schedulable plug-in power modules according to the status of the plug-in power modules of each modular single-unit charging pile, select the required number of plug-in power modules based on the preset line loss, and determine the schedulable power of each modular single-unit charging pile according to the required number of plug-in power modules.

[0060] The state of the plug-in power module refers to whether the module is in an idle or occupied state, which can be achieved by using a sensor to detect the current output state of the module to determine whether the module can be scheduled.

[0061] Among them, the preset line loss refers to the resistance loss threshold of the power transmission path inside the charging pile. It can be calculated by multiplying the line impedance parameter and the current value, and is used to optimize the scheduling path of plugging and unplugging power modules.

[0062] The required number of plug-in power modules refers to the minimum number of modules required to meet charging requirements. It can be obtained by dividing the power requirement by the rated power of a single module and rounding up to achieve optimal resource allocation.

[0063] Specifically, the power manager first counts the number of idle plug-in power modules in all modular single-cell charging piles, and then calculates the required number of modules based on the charging power demand. When selecting modules, it prioritizes modules that are electrically close to the charging gun to reduce power loss caused by line impedance. For example, when three modules need to be scheduled, the power manager selects three adjacent idle modules from the ring structure of the same single-cell charging pile. If the single-cell charging pile has insufficient idle modules, the bridge structure selects the module combination with the lowest path loss from the shared ring structure.

[0064] In some specific embodiments, the line loss optimization process can utilize a dynamic programming algorithm, using the impedance of the connection paths between modules as a weighted parameter to generate a module combination that meets power requirements while minimizing overall impedance. Furthermore, the power manager can adjust module scheduling strategies based on real-time current data. For example, if it detects an abnormally high temperature in the path where a module resides, it can automatically switch to a backup module to reduce line losses.

[0065] Compared to existing technologies, traditional charging pile power scheduling only considers whether the number of modules meets demand, without optimizing line losses. This invention, by introducing line losses as a scheduling target, reduces ineffective energy losses during transmission while meeting power requirements, thereby improving overall charging efficiency. Furthermore, by dynamically counting the number of schedulable modules and calculating the optimal combination in real time, it can adapt to the power allocation requirements of different charging scenarios.

[0066] Through the above technical solution, the present invention achieves efficient scheduling of charging pile plug-in power modules and coordinated optimization of line losses, solving the energy waste problem caused by line impedance in the existing technology. This solution can dynamically adjust the module combination based on real-time status, reducing system operating costs while ensuring charging power, and providing a flexible resource allocation foundation for charging pile power expansion.

[0067] Based on the same general inventive concept, the present invention also protects a control method for a modular DC charging pile with a power pool scheduling function. The control method for a modular DC charging pile with a power pool scheduling function provided by the present invention is described below. The control method for a modular DC charging pile with a power pool scheduling function described below can be referenced to the modular DC charging pile with a power pool scheduling function described above.

[0068] Figure 5This is a flow chart of a control method for a modular DC charging pile with a power pool scheduling function provided by an embodiment of the present invention, wherein the method is applied to a modular DC charging pile with a power pool scheduling function. Figure 5 As shown, the control method of the modular DC charging pile with power pool scheduling function of this embodiment includes the following steps: 501. Obtain charging demand information of a charging target by using a first-type charging gun; 502. Schedule and remove power modules from the single ring structure or from the shared ring structure according to the charging demand information to charge the charging object.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A modular DC charging pile with power pool scheduling function, characterized in that: Includes at least one modular single charging pile and a bridge structure; Each modular single-unit charging pile includes multiple plug-in power modules, a shared power pool structure, multiple first-class charging guns and a power manager; The multiple pluggable power modules of any modular single-unit charging pile form a single ring structure through the shared power pool structure, or the multiple pluggable power modules in at least two modular single-unit charging piles form a shared ring structure, and the first-type charging guns of at least two modular single-unit charging piles are bridged by the bridge structure; The power manager obtains charging demand information of the charging object by using the first type of charging gun, and schedules the plug-in power module from the single ring structure or the shared ring structure according to the charging demand information to charge the charging object.

2. The modular DC charging pile with power pool scheduling function according to claim 1, characterized in that: The power manager schedules plugging and unplugging of power modules based on preset rules; The preset rules include: Selecting a pluggable power module directly connected to the used first-type charging gun as a first target pluggable power module; If the power of the first target pluggable power module is less than the charging power requirement of the charging object, if there are idle pluggable power modules adjacent to the first target pluggable power module in the forward or backward direction along the ring, at least one adjacent idle pluggable power module is selected as the second target pluggable power module; If the sum of the power of the first target plug-in power module and the power of the second target plug-in power module is less than the required charging power, at least one idle plug-in power module that is not adjacent to the first target plug-in power module is selected as the third target plug-in power module through the bridging structure, so that the total power of the selected target plug-in power modules is greater than or equal to the required charging power.

3. The modular DC charging pile with power pool scheduling function according to claim 2, characterized in that: The power manager is further configured to: If the status of the first target plug-in power module is occupied, and the modular single-unit charging pile corresponding to the first target plug-in power module has a charging power demand, the first target plug-in power module is controlled to stop charging other charging objects, and the plug-in power modules are rescheduled for the other charging objects.

4. The modular DC charging pile with power pool scheduling function according to claim 1, characterized in that: The number of modular single charging piles is an even number; Every two modular single-unit charging piles are divided into a pair; the first type charging guns of each pair of modular single-unit charging piles are bridged by the bridging structure.

5. The modular DC charging pile with power pool scheduling function according to claim 1, characterized in that: Each modular single charging station also includes: The expansion structure is used to increase or reduce the number of pluggable power modules.

6. The modular DC charging pile with power pool scheduling function according to claim 1, characterized in that: Also included is a second type of charging gun; The second type of charging gun is detachably connected to the pluggable power module.

7. The modular DC charging pile with power pool scheduling function according to claim 6, characterized in that: The second type charging guns of at least two modular single charging piles are bridged by the bridge structure.

8. The modular DC charging pile with power pool scheduling function according to any one of claims 1 to 7, characterized in that: Also included is a user guidance device; The power manager is further configured to determine the schedulable power of each modular single-unit charging pile according to the status of the plug-in power module of each modular single-unit charging pile, and output the information through the user guidance device to guide the user to select a modular single-unit charging pile.

9. The modular DC charging pile with power pool scheduling function according to claim 1, characterized in that: The power manager is further configured to: Determine the total number of schedulable pluggable power modules based on the status of the pluggable power modules of each modular single charging pile; Based on the preset line loss, select the required number of plug-in power modules; The dispatchable power of each modular single charging pile is determined based on the required number of plug-in power modules.

10. A control method for a modular DC charging pile with a power pool scheduling function, characterized in that: A modular DC charging pile with a power pool scheduling function for use in any one of claims 1 to 9, the method comprising: Obtain charging demand information of the charging object by using the first type of charging gun; According to the charging demand information, power modules are scheduled to be plugged in and out from the single ring structure, or power modules are scheduled to be plugged in and out from the shared ring structure, so as to charge the charging object.

Images