A charging power distribution structure and control system

Abstract

The utility model provides a kind of charging power distribution structure and control system, it is related to charging technical field.Charging power distribution structure includes multiple DC contactor components, multiple power modules, multiple charging guns, at least one group of jumper circuit and jumper DC contactor component;Multiple DC contactor components are sequentially connected to form annular topology structure, and each power module is electrically connected between the adjacent two DC contactor components of annular topology structure;Multiple charging guns are electrically connected on annular topology structure;The output end of jumper circuit is connected to the copper bar node of target charging gun, and the input end is connected to the copper bar node corresponding to the non-adjacent power module of target charging gun;Jumper DC contactor component is arranged on jumper circuit, for controlling the on-off of jumper circuit.The charging power distribution structure compared with the power distribution matrix in prior art, reduces the configuration quantity of DC contactor, simplifies the layout structure of DC contactor, to reduce overall cost.

Description

Technical Field

[0001] This utility model relates to the field of charging technology, and in particular to a charging power distribution structure and control system. Background Technology

[0002] The advent of new energy charging piles has broken through the technical bottleneck of fixed power output in traditional charging stations. This system integrates multiple charging modules to construct a unified power pool, enabling dynamic power allocation based on the real-time needs of connected vehicles. To achieve this dynamic power allocation, the charging pile requires a power switching matrix. This matrix precisely controls the on / off state of the DC contactors through a monitoring system, thereby dynamically adjusting the charging pile's output power. This dynamic adjustment mechanism not only meets the power requirements of conventional charging stations but also adapts to the high-power output scenarios of supercharging stations.

[0003] Currently, power distribution matrices mainly have three topologies: half-matrix, full-matrix, and star-ring. These matrices typically employ a modular grouping design, integrating multiple power modules into independent unit groups and achieving power output control through a single DC contactor. However, the high current-carrying capacity of a single DC contactor leads to volume redundancy and increased cost. Furthermore, to meet system-level control requirements, additional DC contactors are needed in the infrastructure, further increasing the number of DC contactors.

[0004] Therefore, the power distribution matrix in the prior art has at least the following problems: it requires the configuration of multiple DC contactors, resulting in a complex layout structure, increased overall size, and increased cost. Utility Model Content

[0005] To address the problem that existing power distribution matrices require multiple DC contactors, resulting in complex layouts, increased overall size, and higher costs, this invention aims to provide a charging power distribution structure and control system that reduces the number of DC contactors required, simplifies the layout, and lowers overall size and cost.

[0006] A charging power distribution structure, comprising: Multiple DC contactor assemblies are connected in sequence to form a ring topology; Multiple power modules, the same number as the multiple DC contactor assemblies, each power module being electrically connected between two adjacent DC contactor assemblies in the ring topology; Multiple charging guns are electrically connected to the ring topology; At least one set of jumper lines, the output of which is connected to the copper busbar node of the target charging gun, and the input of which is connected to the copper busbar node corresponding to a non-adjacent power module of the target charging gun. A jumper DC contactor assembly is disposed on the jumper line for controlling the on / off state of the jumper line.

[0007] In some alternative embodiments, each of the DC contactor assemblies includes: A positive DC contactor is connected to the positive terminal of the corresponding power module; The negative DC contactor is connected to the negative terminal of the corresponding power module.

[0008] In some alternative embodiments, the number of power modules is twice the number of charging guns; Each of the charging guns is configured to invoke at least two of the power modules.

[0009] In some alternative embodiments, when adjacent charging guns are idle, each of the charging guns is configured to additionally call up two power modules corresponding to the idle adjacent charging guns.

[0010] In some alternative embodiments, the input of the jumper line is connected to a copper busbar node corresponding to a charging gun power module that is not adjacent to the target charging gun.

[0011] In some alternative embodiments, when at least some of the charging guns are idle, the target charging gun can be configured to enter a supercharging state by activating the corresponding jumper DC contactor assembly, which invokes multiple power modules, including its own corresponding power module and the power module corresponding to the idle charging gun.

[0012] In some alternative embodiments, the number of power modules is fourteen, and the corresponding number of DC contactor assemblies is fourteen.

[0013] In some alternative embodiments, the number of jumper lines is two, corresponding to two jumper DC contactor assemblies.

[0014] In some alternative embodiments, the outputs of the two sets of jumper lines are connected to the copper busbar nodes of the same target charging gun, and the inputs of the two sets of jumper lines are respectively connected to the copper busbar nodes corresponding to different power modules that are not adjacent to the target charging gun.

[0015] On the other hand, this utility model also provides a control system, including: The charging power distribution structure as described in any of the above embodiments; The controller is communicatively connected to the DC contactor assembly and the jumper DC contactor assembly, respectively, and is used to control the on / off state of the DC contactor assembly and the jumper DC contactor assembly to realize the calling and combination of power modules.

[0016] Compared with the prior art, the charging power distribution structure provided by this utility model embodiment has at least the following technical effects: The charging power distribution structure includes multiple DC contactor assemblies, multiple power modules, multiple charging guns, at least one set of jumper lines and jumper DC contactor assemblies. The multiple DC contactor assemblies are connected sequentially to form a ring topology. The number of power modules is the same as the number of DC contactor assemblies, and each power module is electrically connected between two adjacent DC contactor assemblies in the ring topology. Multiple charging guns are electrically connected to the ring topology. The output of the jumper line is connected to the copper busbar node of the target charging gun, and the input of the jumper line is connected to the copper busbar node corresponding to a non-adjacent power module of the target charging gun. The jumper DC contactor assemblies are arranged on the jumper lines to control the on / off state of the jumper lines. The controller is communicatively connected to the DC contactor assemblies and the jumper DC contactor assemblies to control their on / off states, thereby enabling the combination and calling of power modules. Compared to the power distribution matrix in the prior art, this charging power distribution structure reduces the number of DC contactors and simplifies the layout of the DC contactors, thus reducing the overall cost.

[0017] Since the control system includes a charging power distribution structure, it possesses at least the technical benefits of such a structure. Furthermore, while meeting the basic charging requirements of conventional charging stations, the control system is also compatible with the fast charging capabilities of supercharging stations. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the charging power distribution structure in one embodiment of the present invention; Figure 2 This is a layout diagram of the positive DC contactor in a charging power distribution structure according to one embodiment of the present invention; Figure 3 This is a layout diagram of the negative DC contactor in a charging power distribution structure according to one embodiment of the present invention. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0022] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0023] This utility model provides a control system, including a charging power distribution structure and a controller. The charging power distribution structure includes multiple DC contactor assemblies, multiple power modules, multiple charging guns, at least one set of jumper lines and jumper DC contactor assemblies; the multiple DC contactor assemblies are connected sequentially to form a ring topology; the number of power modules is the same as the number of DC contactor assemblies, and each power module is electrically connected between two adjacent DC contactor assemblies in the ring topology; the multiple charging guns are electrically connected to the ring topology; the output end of the jumper line is connected to the copper busbar node of the target charging gun, and the input end of the jumper line is connected to the copper busbar node corresponding to a non-adjacent power module of the target charging gun; the jumper DC contactor assemblies are disposed on the jumper lines and used to control the on / off state of the jumper lines. The controller is communicatively connected to the DC contactor assemblies and the jumper DC contactor assemblies respectively, and is used to control the on / off state of the DC contactor assemblies and the jumper DC contactor assemblies to realize the calling and combination of power modules.

[0024] This embodiment achieves one DC contactor component per power module by using the same number of power modules and DC contactor assemblies. Compared to the power distribution matrix in existing technologies, this effectively reduces the size of the DC contactors, thereby lowering the overall cost. Multiple DC contactor assemblies are sequentially connected to form a ring topology. Each power module is electrically connected between two adjacent DC contactor assemblies in the ring topology. Multiple charging guns are electrically connected to the ring topology. The output of the jumper line is connected to the copper busbar node of the target charging gun, while the input is connected to the copper busbar node corresponding to a power module not adjacent to the target charging gun. This allows each charging gun to flexibly utilize power modules based on the charging needs of the charging device and the operating status of other charging guns. Through the coordinated operation of the ring topology and the jumper line, the system can directionally transfer energy from multiple power modules to the target charging gun, achieving a super-fast charging mode. Compared to the power distribution matrix in existing technologies, this charging power distribution structure reduces the number of DC contactors and simplifies their layout, thus lowering the overall cost. Furthermore, the control system including this charging power distribution structure not only meets the basic charging requirements of conventional charging piles but also has the capability to support the fast charging function of supercharging piles.

[0025] In some optional embodiments, each DC contactor assembly includes a positive DC contactor and a negative DC contactor; the positive DC contactor is connected to the positive terminal of the corresponding power module; the negative DC contactor is connected to the negative terminal of the corresponding power module. Specifically, phase A1 of the positive DC contactor is connected to the positive terminal of the corresponding power module, and phase A2 is connected to a copper busbar; phase A1 of the negative DC contactor is connected to the negative terminal of the corresponding power module, and phase A2 is connected to a copper busbar.

[0026] In some optional embodiments, the number of power modules is fourteen, and the corresponding number of DC contactor assemblies is fourteen, that is, the number of positive DC contactors is fourteen and the number of negative DC contactors is fourteen.

[0027] In one specific embodiment, please refer to the appendix. Figure 1 To be continued Figure 3As shown, MK represents a power module, and KM represents a DC contactor. The fourteen power modules are MK1, MK2, MK3, MK4, MK5, MK6, MK7, MK8, MK9, MK10, MK11, MK12, MK13, and MK14. There are seven charging guns: Charging Gun 1, Charging Gun 2, Charging Gun 3, Charging Gun 4, Charging Gun 5, Charging Gun 6, and Charging Gun 7. The fourteen DC contactor assemblies are KM1, KM2, KM3, KM4, KM5, KM6, KM7, KM8, KM9, KM10, KM11, KM12, KM13, and KM14; the corresponding fourteen positive DC contactors are KM1', KM2', KM3', KM4', KM5', KM6', KM7', KM8', and KM9'. KM10´, KM11´, KM12´, KM13´, KM14´; the corresponding fourteen negative DC contactors are KM1´´, KM2´´, KM3´´, KM4´´, KM5´´, KM6´´, KM7´´, KM8´´, KM9´´, KM10´´, KM11´´, KM12´´, KM13´´, KM14´´. The DC contactors are electrically connected to each other via copper busbars, while the power modules are connected to the corresponding copper busbar nodes via cables.

[0028] In some optional embodiments, there are two sets of jumper lines, corresponding to two jumper DC contactor assemblies. Each jumper DC contactor assembly includes a positive jumper DC contactor and a negative jumper DC contactor. In one specific embodiment, the two jumper DC contactor assemblies are KM15 and KM16; the two corresponding positive jumper DC contactors are KM15' and KM16'; and the two corresponding negative jumper DC contactors are KM15'' and KM16''.

[0029] In some optional embodiments, the number of power modules is twice the number of charging guns; each charging gun is configured to invoke at least two power modules. For example, when a charging device is charging through charging gun 1, the system activates DC contactor assembly KM1, thereby invoking power modules MK1 and MK2 to provide charging power to charging gun 1. Furthermore, the system can be flexibly adjusted according to actual needs. For instance, in addition to using the combination of DC contactor assembly KM1 activation, DC contactor assembly KM14 can also be activated, invoking power modules MK1 and MK14. Similarly, the operation of other charging guns is similar to that of charging gun 1, allowing for flexible invocation of appropriate power modules to better meet diverse charging requirements.

[0030] In some optional embodiments, when adjacent charging guns are idle, each charging gun is configured to additionally utilize the two power modules corresponding to the idle adjacent charging gun. For example, when the charging device is charging through charging gun 1, if charging gun 2 is idle, the system will activate DC contactor assemblies KM1, KM2, and KM3, utilizing power modules MK1, MK2, MK3, and MK4 to provide higher charging power to charging gun 1. This flexible utilization mechanism improves charging efficiency, enabling charging gun 1 to obtain additional power resources when needed.

[0031] In practical applications, assuming each power module has a power of 40kW, the charging power that each charging gun can provide will range from 80kW to 160kW. This means that when charging gun 1 works independently, it can provide 80kW of power; while when the power module of an adjacent charging gun is used, the charging power can be increased to 160kW.

[0032] In some alternative embodiments, the input of the jumper line is connected to a copper busbar node corresponding to a charging gun power module that is not adjacent to the target charging gun.

[0033] In some optional embodiments, when at least some charging guns are idle, the target charging gun can be configured to enter a supercharging state by activating the corresponding crossover DC contactor assembly, which calls multiple power modules, including its own corresponding power module and the power module corresponding to the idle charging gun.

[0034] In some optional embodiments, the outputs of the two sets of jumper lines are connected to the copper busbar nodes of the same target charging gun, and the inputs of the two sets of jumper lines are respectively connected to the copper busbar nodes corresponding to different power modules that are not adjacent to the target charging gun.

[0035] In an exemplary embodiment, it is assumed that the target charging gun is charging gun 4. To achieve super-fast charging, the system uses a ring topology and jumper lines to directionally transfer energy from the power matrix to the target charging gun. Optionally, the input of the jumper DC contactor assembly KM15 is connected to the copper busbar node of the power module MK3 at the front end of charging gun 2, while the input of the jumper DC contactor assembly KM16 is connected to the copper busbar node at the rear end of charging gun 7. The outputs of both KM15 and KM16 are connected to the copper busbar node of charging gun 4.

[0036] When charging gun 4 needs to enter super-fast charging mode, power module MK7 will directly provide energy. Simultaneously, the system will activate DC contactor assemblies KM4, KM5, and KM6, activating power modules MK4, MK5, and MK6; activate DC contactor assemblies KM1, KM2, and KM15, activating power modules MK1, MK2, and MK3; activate DC contactor assemblies KM7, KM8, and KM9, activating power modules MK8, MK9, and MK10; and activate DC contactor assemblies KM12, KM13, and KM16, activating power modules MK12, MK13, and MK14. Through the coordinated operation of the ring topology and jumper lines, charging gun 4 can obtain support from multiple power modules in a short time, improving charging efficiency and achieving super-fast charging. When charging gun 4 enters super-fast charging mode, DC contactor assembly KM11 will disconnect, and power module MK11 will be idle, ready to meet the needs of other charging devices.

[0037] It should be further explained that during the super-fast charging process, if a charging gun has a low-power charging requirement, the system will disconnect the DC contactor assembly closest to that charging gun to ensure that it can charge smoothly. For example, when charging gun 5 needs to perform low-power charging, the system will disconnect DC contactor assemblies KM8 and KM10 and call power modules MK9 and MK10 to ensure that at least two power modules are available for charging gun 5, thereby ensuring the smooth progress of low-power charging.

[0038] The above description is merely an embodiment of this utility model. It should be noted that those skilled in the art can make improvements without departing from the inventive concept of this utility model, but these improvements all fall within the protection scope of this utility model.

Claims

1. A charging power distribution structure, characterized in that, include: Multiple DC contactor assemblies are connected in sequence to form a ring topology; Multiple power modules, the same number as the multiple DC contactor assemblies, each power module being electrically connected between two adjacent DC contactor assemblies in the ring topology; Multiple charging guns are electrically connected to the ring topology; At least one set of jumper lines, the output of which is connected to the copper busbar node of the target charging gun, and the input of which is connected to the copper busbar node corresponding to a non-adjacent power module of the target charging gun. A jumper DC contactor assembly is disposed on the jumper line for controlling the on / off state of the jumper line.

2. The charging power distribution structure according to claim 1, characterized in that, Each of the DC contactor assemblies includes: A positive DC contactor is connected to the positive terminal of the corresponding power module; The negative DC contactor is connected to the negative terminal of the corresponding power module.

3. The charging power distribution structure according to claim 1, characterized in that, The number of power modules is twice the number of charging guns; Each of the charging guns is configured to invoke at least two of the power modules.

4. The charging power distribution structure according to claim 3, characterized in that, When adjacent charging guns are idle, each of the charging guns is configured to additionally call up the two power modules corresponding to the idle adjacent charging guns.

5. The charging power distribution structure according to claim 1, characterized in that, The input terminal of the jumper line is connected to the copper busbar node corresponding to the power module of the charging gun that is not adjacent to the target charging gun.

6. The charging power distribution structure according to claim 1, characterized in that, When at least some of the charging guns are idle, the target charging gun can be configured to enter a supercharging state by activating the corresponding crossover DC contactor assembly, which calls multiple power modules, including its own corresponding power module and the power module corresponding to the idle charging gun.

7. The charging power distribution structure according to claim 1, characterized in that, The number of power modules is fourteen, and the corresponding number of DC contactor assemblies is fourteen.

8. The charging power distribution structure according to claim 7, characterized in that, The number of jumper lines is two sets, and the corresponding number of jumper DC contactor assemblies is two.

9. The charging power distribution structure according to claim 8, characterized in that, The output terminals of the two sets of jumper lines are connected to the copper busbar nodes of the same target charging gun, and the input terminals of the two sets of jumper lines are respectively connected to the copper busbar nodes of different power modules that are not adjacent to the target charging gun.

10. A control system, characterized in that, include: The charging power distribution structure as described in any one of claims 1 to 9; The controller is communicatively connected to the DC contactor assembly and the jumper DC contactor assembly, respectively, and is used to control the on / off state of the DC contactor assembly and the jumper DC contactor assembly to realize the calling and combination of power modules.

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