DC power distribution method and system for charging stations based on a chaotic topology

Abstract

Method and system for DC power distribution for charging stations based on a chaotic topology. The invention relates to a method for DC power distribution for charging stations based on a chaotic topology, comprising: according to user requirements, establishing an initial chaotic topology distribution network for charging station power based on a matrix topology network (S1); using a Gaussian kernel function to extend one dimension of the initial distribution network to a high-dimensional surface to obtain a distribution network with multiple charging nodes (S2); based on the distribution network, the required energy of each charging point, and an energy distribution strategy, controlling the opening and closing of contactor switching units to direct the output energy from power conversion units (S3). Figure 1

Description

Title of the invention: Method and system for DC power distribution for charging stations based on a chaotic topology. Technical field

[0001] The present invention relates to the technical field of charging stations and, in particular, to a method and system for distributing direct current (DC) energy for charging stations based on a chaotic topology.

[0002] Prior art

[0003] After a charging station initiates charging, the control device first communicates with all vehicles waiting to charge to request charging data. The charging station dynamically calculates and adjusts the real-time output energy for each vehicle based on its energy requirements and the output capacity of its own power supply units. During charging, the energy required for each vehicle is continuously calculated in real time to avoid redundant activation and allocation of power supply units. Adopting an efficient power routing topology can improve the utilization efficiency of power supply modules, reduce equipment production costs, shorten vehicle charging time, and enhance the user charging experience.Current conventional power routing topologies include linear allocation topologies, circular allocation topologies, star allocation topologies, and matrix allocation topologies. However, these topologies suffer from problems such as low power utilization or dead zones in boost power allocation, and they lack the flexibility to individually customize the degrees of freedom for specific nodes.

[0004] Based on this, a new solution is needed. Summary of the invention

[0005] The main objective of the present invention is to solve the problems of low energy utilization, dead zones in the allocation of boost energy and inability to flexibly customize node degrees of freedom in existing power routing topologies, by proposing a DC power distribution method for charging stations based on a chaotic topology.

[0006] To achieve the aforementioned objective, the present invention relates to a method for distributing direct current (DC) power to charging stations based on a chaotic topology, characterized in that it comprises the following steps:

[0007] according to user requirements, establish an initial chaotic topology distribution network for charging station energy based on a matrix topology network;

[0008] use a Gaussian kernel function to extend one dimension of the initial chaotic topology distribution network for a charging station energy to a high-dimensional surface in order to obtain a chaotic topology distribution network for a charging station energy with multiple charging nodes, each charging node being equipped with a charging gun and an energy conversion unit connected to the charging gun, and contactor switching units being installed between charging nodes with linking relationships;

[0009] based on the chaotic topology distribution network for a charging station energy, a required energy from each charging gun and an energy distribution strategy, control the closing and opening of the contactor switching units to direct an output energy from the energy conversion units.

[0010] In the DC power distribution method for charging stations based on a chaotic topology provided by the present invention, the step of establishing, according to user requirements, an initial chaotic topology distribution network for charging station power based on a matrix topology network comprises:

[0011] based on a number of charging guns and layout requirements entered by the user, establish a matrix topology distribution network for a charging station power, the matrix topology distribution network for a charging station power comprising multiple planar matrix nodes, each planar matrix node being equipped with a charging gun and a power conversion unit connected to the charging gun, and contactor switching units being installed between adjacent planar matrix nodes;

[0012] modify user-selected planar matrix node degrees of freedom, and install contactor switching units between user-selected planar matrix nodes and one or more of the remaining planar matrix nodes to establish link relationships, in order to form the initial chaotic topology distribution network for a charging station power.

[0013] In the DC power distribution method for charging stations based on a chaotic topology provided by the present invention, the step of using a Gaussian kernel function to extend one dimension of the initial chaotic topology distribution network for charging station power to a high-dimensional surface in order to obtain a chaotic topology distribution network for charging station power with multiple charging nodes comprises:

[0014] use the Gaussian kernel function to extend the dimensions of the initial distribution network to chaotic topology for a charging station energy;

[0015] according to a maximum degree of freedom of the load nodes, reduce the dimension of the initial extended-dimensional chaotic topology distribution network for a charging station in order to obtain the chaotic topology distribution network for a charging station energy.

[0016] In the DC power distribution method for charging stations based on a chaotic topology provided by the present invention, the step of controlling the opening and closing of the contactor switching units to direct the output energy of the power conversion units, based on the chaotic topology distribution network for a charging station, the required energy of each charging gun, and an energy distribution strategy, comprises:

[0017] after one of the multiple charging guns is activated, disconnect the contactor switching unit directly connected to the activated charging gun, and inject energy from the energy conversion unit connected to the activated charging gun into the activated charging gun;

[0018] when the energy of the energy conversion unit connected to the activated charging gun is less than the energy required by the activated charging gun, search the chaotic topology distribution network for charging station energy to determine whether or not there are inactive energy conversion units among the energy conversion units connected to the charging node where the activated charging gun is located; when an inactive energy conversion unit is found, close the contactor switching unit between the charging node where the inactive energy conversion unit is located and the charging node where the activated charging gun is located, and inject the energy from the inactive energy conversion unit into the activated charging gun.

[0019] In the DC power distribution method for charging stations based on a chaotic topology provided by the present invention, it further comprises: when the sum of the energy of the power conversion units connected to the activated charging gun and the energy of all inactive power conversion units is less than the required energy of the activated charging gun, searching the chaotic topology distribution network for a given charging station power to determine whether or not there is a second type of power conversion unit among the power conversion units connected to the charging node where the occupied power conversion unit is located, the second type of power conversion unit being a power conversion unit already occupied by other charging guns with a utilization rate lower than that of the occupied power conversion unit. the charging gun activated; when the second type of energy conversion unit is found, close the contactor switching unit between the load node where the second type of energy conversion unit is located and the load node where the charging gun is activated, and inject the energy from the second type of energy conversion unit into the activated charging gun.

[0020] According to another aspect, the present invention also relates to a DC power distribution system for charging stations based on a chaotic topology, characterized in that it comprises:

[0021] an initial distribution network establishment module with chaotic topology, configured to establish, according to user requirements, an initial distribution network with chaotic topology for a charging station energy on the basis of a matrix topology network;

[0022] a dimension extension module, configured to use a Gaussian kernel function to extend one dimension of the initial chaotic topology distribution network for a charging station energy to a high-dimensional surface in order to obtain a chaotic topology distribution network for a charging station energy with multiple charging nodes, each state charging node equipped with a charging gun and an energy conversion unit connected to the charging gun, and contactor switching units being installed between charging nodes with linking relationships;

[0023] a control module, configured, on the basis of the chaotic topology distribution network for a charging station energy, a required energy of each charging gun and an energy distribution strategy, to control the closing and opening of the contactor switching units in order to direct an output energy from the energy conversion units.

[0024] According to another aspect, the present invention further relates to a charging station, characterized by the fact that the charging station includes the DC power distribution system for charging stations based on a chaotic topology as described above.

[0025] According to another aspect, the present invention further relates to a DC power distribution device for charging stations based on a chaotic topology, characterized in that it comprises a processor and a memory, the memory storing a computer program and, when the computer program is executed by the processor, the steps of the DC power distribution method for charging stations based on a chaotic topology as described above are implemented.

[0026] The DC power distribution method for charging stations based on a chaotic topology provided by the present invention offers the beneficial effects following: the present invention relates to a method of DC power distribution for charging stations based on a chaotic topology comprising, according to user requirements, the establishment of an initial chaotic topology distribution network for a charging station power on the basis of a matrix topology network; the use of a Gaussian kernel function to extend one dimension of the initial chaotic topology distribution network for a charging station power to a high-dimensional surface in order to obtain a chaotic topology distribution network for a charging station power with multiple charging nodes;Based on the chaotic topology distribution network for charging station energy, the energy required by each charging gun, and an energy distribution strategy, the control of the opening and closing of contactor switching units directs the output energy from the energy conversion units; this enables efficient and flexible energy planning, allows arbitrary customization of the degrees of freedom for all nodes of the power topology, and ensures that each node can achieve the efficiency expected by the user. Description of the drawings

[0027] In order to illustrate more clearly the technical solutions of the embodiments of the present invention or of the prior art, the drawings necessary for the description of the embodiments or of the prior art are briefly presented below. It is understood that the drawings presented in the following description are only examples of the present invention. For a person skilled in the art, other drawings can also be obtained on the basis of the drawings provided, without creative effort:

[0028] [Fig. 1] is a flowchart of a DC power distribution method for charging stations based on a chaotic topology according to an embodiment of the present invention;

[0029] [Fig.2] is a matrix topology distribution network for terminal energy charging, established according to user requirements;

[0030] [Fig.3] is an extended matrix topology distribution network for an energy charging station.

[0031] Embodiments of the invention

[0032] To facilitate understanding of the present invention, it will be described in more detail below, with reference to the corresponding drawings. Typical embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described here. On the contrary, the objective of these The embodiment is to make the disclosure of the present invention more complete and detailed.

[0033] Unless otherwise defined, all technical and scientific terms used in this document have the same meaning as that commonly understood by a person skilled in the art of the present invention. The terminology used in the description of the present invention is solely for the purpose of describing specific embodiments and is not intended to limit the present invention.

[0034] Figure 1 is a flowchart of a DC power distribution method for charging stations based on a chaotic topology according to an embodiment of the present invention. As shown in Figure 1, the DC power distribution method for charging stations based on a chaotic topology provided by the present invention comprises the following steps:

[0035] SI step: according to user requirements, establish an initial chaotic topology distribution network for charging station energy based on a matrix topology network.

[0036] More specifically, in one embodiment of the present invention, the number and coding of charge guns to be installed in the system are first confirmed based on user requirements, and these charge gun nodes are distributed across the nodes of a matrix grid for initialization. As shown in [Fig. 2], the matrix grid established according to user requirements comprises 16 charge guns. Then, within this matrix topology network of charge guns, the user selects charge gun nodes with higher degrees of freedom from among all the nodes. Here, the degree of freedom refers to the number of other nodes to which a specific node can connect. For example, in the example shown in [Fig. 2], the number and coding of charge guns to be installed in the system are first confirmed based on user requirements, and these charge gun nodes are distributed across the nodes of a matrix grid for initialization. As shown in [Fig. 2], the matrix grid established according to user requirements comprises 16 charge guns. Then, within this matrix topology network of charge guns, the user selects charge gun nodes having higher degrees of freedom from among all the nodes. Here, the degree of freedom refers to the number of other nodes to which a specific node can connect. For example, in the example shown in [Fig. 3], the user selects 16 charge gun nodes with higher degrees of freedom from among all the nodes.[2], the node containing charge gun 13 has a degree of freedom of 4, the node containing charge gun 1 has a degree of freedom of 2, and the node containing charge gun 2 has a degree of freedom of 3. Finally, based on user selection, the degrees of freedom of the nodes containing the charge guns are modified by adding bridging nodes from these nodes to more distant nodes. Increasing the number of bridging nodes increases the degree of freedom. The modified feed topology is shown in [Fig. 3], in which the node containing charge gun 13 has a degree of freedom of 7, the node containing charge gun 1 has a degree of freedom of 3, and the node containing charge gun 2 has a degree of freedom of 5. Therefore, the SI step includes: .

[0037] Based on a number of charging guns and layout requirements entered by the user, establish a matrix topology distribution network for a charging station power supply, the matrix topology distribution network for a charging station energy comprising multiple planar matrix nodes, each planar matrix node being equipped with a charging gun and an energy conversion unit connected to the charging gun, and contactor switching units being installed between adjacent planar matrix nodes;

[0038] modify user-selected planar matrix node degrees of freedom and install contactor switching units between user-selected planar matrix nodes and one or more of the remaining planar matrix nodes to establish link relationships, in order to form the initial chaotic topology distribution network for a charging station power.

[0039] Thus, the preliminary design of the chaotic power routing topology based on a matrix structure is complete. The chaotic power routing topology has no fixed shape; it deforms according to user customization requirements, and its linking methods are flexible. Consequently, it enables efficient and flexible energy planning, allows arbitrary customization of the degrees of freedom for all nodes of the power topology, and ensures that each node can achieve the efficiency expected by the user.

[0040] Step S2: use a Gaussian kernel function to extend one dimension of the initial chaotic topology distribution network for a charging station energy to a high-dimensional surface in order to obtain a chaotic topology distribution network for a charging station energy with multiple charging nodes, each charging node being equipped with a charging gun and an energy conversion unit connected to the charging gun, and contactor switching units being installed between charging nodes with linking relationships.

[0041] More specifically, in one embodiment of the present invention, two-dimensional matrix nodes can be directly linearly classified in a two-dimensional space. However, without knowing the boundaries that the user might modify, it becomes impossible to classify the new topology directly on a two-dimensional plane. It is therefore necessary to extend the dimension of the new topology model to a high-dimensional surface, which makes it possible to obtain linear separability and traceable paths in a high-dimensional space. Step S2 therefore comprises:

[0042] Step S21: use the Gaussian kernel function to extend the dimensions of the initial distribution network to chaotic topology for a charging station energy.

[0043] More specifically, in one embodiment of the present invention, the Gaussian kernel function is used as a feature mapping vector. The expression for the Gaussian function is as follows:

[0044] All nodes containing energy conversion units are mapped using the Gaussian kernel function. The mapped vector is represented as follows: k(x,y) = < <p^,<P(y}> =

[0045] To obtain an even higher dimension extension, after performing a Taylor expansion on the Gaussian kernel, the mapping function can be expressed as follows:

[0046] After extension, the vector expression can be derived as follows:

[0047] At this stage, the two-dimensional coordinate system of (x, y) has been successfully elevated to an infinite-dimensional high-dimensional space. The chaotic topology energy routing model can achieve linear separability in this high-dimensional space. The chaotic topology system extends from the two-dimensional space to a polyhedral matrix topology model in the high-dimensional space. In this high-dimensional surface space, all the links of contactor switching units do not overlap, and the paths between energy conversion units are independent and separable.

[0048] Step S22: according to a maximum degree of freedom of the load nodes, reduce the dimension of the initial chaotic topology distribution network with extended dimension for a charging station in order to obtain the chaotic topology distribution network for a charging station energy.

[0049] More specifically, in one embodiment of the present invention, the computational load in the high-dimensional surface space is significant. Therefore, to meet the linear separability requirements while maintaining a manageable computational load, it is necessary to reduce the dimensionality based on the degree of maximum freedom of the load nodes. For example, in the embodiment shown in [Fig. 3], the maximum degree of freedom (number of outgoing links) of a node is 7. It is therefore sufficient to extend it to a 7-dimensional space to meet the requirements. The specific approach in this invention consists of retaining the first 6 levels of the Taylor series expansion of the Gaussian kernel function and setting the weights of all subsequent levels to 0.

[0050] In this embodiment, after the chaotic topology energy distribution system has undergone dimensionality increase and subsequent reduction, it continues to perform energy distribution in a matrix manner. This resolves the problem of consistency of energy distribution strategies across all chaotic models.

[0051] Step S3: Based on the chaotic topology distribution network for a charging station energy, a required energy from each charging gun and an energy distribution strategy, control the closing and opening of the contactor switching units to direct an output energy from the energy conversion units.

[0052] More specifically, in one embodiment of the present invention, after generating the chaotic topology distribution network for a charging station's power supply, the required power from all charging points is input. Then, based on the activation state of each charging point and the system's charge distribution strategy, the state of the power delivery network is adjusted to deliver power according to the charging point requirements.

[0053] More specifically, when a charging gun is activated, the contactor switching unit directly connected to the activated charging gun is first disconnected, and energy from the energy conversion unit connected to the activated charging gun is supplied to the activated charging gun. Furthermore, since the energy required by each charging gun can vary, the energy supplied by a single energy conversion unit may not be sufficient to meet the demand. In other words, when the energy supplied by the energy conversion unit connected to the activated charging gun is less than the energy required by the activated charging gun, it is necessary to connect additional energy conversion units in the chaotic topology distribution network to provide additional power to the charging station. Therefore, step S 3 includes:

[0054] after activation of one of the multiple charging guns, disconnect the contactor switching unit directly connected to the activated charging gun, and inject energy from the energy conversion unit connected to the activated charging gun into the activated charging gun;

[0055] when the energy of the energy conversion unit connected to the activated charging gun is less than the energy required by the activated charging gun, search the chaotic topology distribution network for charging station energy to determine whether or not there are inactive energy conversion units among the energy conversion units connected to the charging node where the activated charging gun is located; when an inactive energy conversion unit is found, close the contactor switching unit between the charging node where the inactive energy conversion unit is located and the charging node where the activated charging gun is located, and inject the energy from the inactive energy conversion unit into the activated charging gun;

[0056] when a sum of the energy of the energy conversion units connected to the activated charging gun and the energy of all inactive energy conversion units is less than the energy required by the activated charging gun, search the chaotic topology distribution network for charging station energy to determine whether or not there is a second type of energy conversion unit among the energy conversion units connected to the charging node where the occupied energy conversion unit is located, the second type of energy conversion unit being an energy conversion unit already occupied by other charging guns with a utilization rate lower than that of the energy conversion unit occupied by the activated charging gun;When the second type of energy conversion unit is found, close the contactor switching unit between the load node where the second type of energy conversion unit is located and the load node where the activated charging gun is located, and inject the energy from the second type of energy conversion unit into the activated charging gun.

[0057] The present invention also relates to a DC power distribution system for charging stations based on a chaotic topology, comprising:

[0058] an initial distribution network establishment module with chaotic topology, configured to establish, according to user requirements, an initial distribution network with chaotic topology for a charging station energy on the basis of a matrix topology network;

[0059] a dimension extension module, configured to use a Gaussian kernel function to extend one dimension of the initial chaotic topology distribution network for a charging station energy to a high-dimensional surface in order to obtain a chaotic topology distribution network for a charging station energy with multiple charging nodes, each charging node being equipped with a charging gun and an energy conversion unit connected to the charging gun, and contactor switching units being installed between charging nodes with link relationships;

[0060] a control module, configured, on the basis of the chaotic topology distribution network for a charging station energy, a required energy of each charging gun and an energy distribution strategy, to control the closing and opening of the contactor switching units in order to direct an output energy from the energy conversion units.

[0061] Embodiments of the present invention also relate to a DC power distribution device for charging stations based on a chaotic topology, comprising:

[0062] a memory storing a computer program;

[0063] a processor, to execute the computer program stored in memory, in order to implement the following steps:

[0064] according to user requirements, establish an initial chaotic topology distribution network for charging station energy based on a matrix topology network;

[0065] use a Gaussian kernel function to extend one dimension of the initial chaotic topology distribution network for a charging station energy to a high-dimensional surface in order to obtain a chaotic topology distribution network for a charging station energy with multiple charging nodes, each charging node being equipped with a charging gun and an energy conversion unit connected to the charging gun, and contactor switching units being installed between charging nodes with linking relationships;

[0066] based on the chaotic topology distribution network for a charging station energy, a required energy from each charging gun and an energy distribution strategy, control the closing and opening of the contactor switching units in order to direct an output energy from the energy conversion units.

[0067] The description provided in this document contains many specific details. However, it is understood that embodiments of the present invention can be implemented without these specific details. In some cases, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this description.

[0068] Similarly, it should be understood that, to simplify this disclosure and facilitate understanding of one or more of the various inventive aspects, in the description of exemplary embodiments of the above invention, the various features of the invention are sometimes grouped together in a single embodiment, figure, or description. However, the method of disclosure should not be interpreted as reflecting an intention that the claimed invention requires more features than those expressly mentioned in each claim. On the contrary, as reflected in the claims that follow, inventive aspects reside in less than all the features of a single embodiment disclosed above. Therefore, the claims that follow the detailed description are expressly incorporated into that detailed description, each claim constituting by itself a distinct embodiment of the present invention.

[0069] Furthermore, a person skilled in the art will understand that, although some embodiments include certain features found in other embodiments and not other features, combinations of features from different embodiments are intended to fall within the scope of the present invention and form different embodiments. For example, in the following claims, any of the claimed embodiments may be used in any combination.

[0070] It should be noted that the embodiments described above illustrate the invention rather than limit it, and that a person skilled in the art may devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference sign placed in parentheses shall not be interpreted as a limitation of the claim. The word "comprising" does not preclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not preclude the presence of a plurality of such elements. The present invention can be implemented using hardware comprising several distinct elements and a suitably programmed computer. In a unitary claim listing several means, several of these means may be implemented by a single piece of hardware. The use of the words first, second, third, etc.This does not indicate any order. These words should be interpreted as nouns.

Claims

1. Demands A method for distributing direct current (DC) power to charging stations based on a chaotic topology, characterized by the fact that it comprises the following steps: according to user requirements, establish an initial chaotic topology distribution network for charging station energy based on a matrix topology network (SI); use a Gaussian kernel function to extend one dimension of the initial chaotic topology distribution network for a charging station energy to a high-dimensional surface in order to obtain a chaotic topology distribution network for a charging station energy with multiple charging nodes (S2), each charging node being equipped with a charging gun and an energy conversion unit connected to the charging gun, and contactor switching units being installed between charging nodes with linking relationships; based on the chaotic topology distribution network for a charging station energy, a required energy from each charging gun and an energy distribution strategy, control the closing and opening of the contactor switching units to direct an output energy direction from the energy conversion units (S3); the step of establishing, according to user requirements, an initial chaotic topology distribution network for charging station energy based on a matrix topology network (SI) comprising: - based on a number of charging guns and layout requirements entered by user, establish a matrix topology distribution network for a charging station power, the matrix topology distribution network for a charging station power comprising multiple planar matrix nodes, each planar matrix node being equipped with a charging gun and a power conversion unit connected to the charging gun, and contactor switching units being installed between adjacent planar matrix nodes; - modify user-selected planar matrix node degrees of freedom, and install switching units of contactor between the user-selected planar matrix nodes and one or more of the remaining planar matrix nodes to establish link relationships, in order to form the initial chaotic topology distribution network for a charging station energy; the step of controlling, based on the chaotic topology distribution network for a charging station energy, the required energy of each charging gun and an energy distribution strategy, the closing and opening of the contactor switching units in order to direct an output energy from the energy conversion units (S3) comprising: - after one of the multiple charging guns is activated, disconnect the contactor switching unit directly connected to the activated charging gun, and inject energy from the energy conversion unit connected to the activated charging gun into the activated charging gun; - when the energy of the energy conversion unit connected to the activated charging gun is less than the energy required by the activated charging gun, search the chaotic topology distribution network for charging station energy to determine whether or not there are inactive energy conversion units among the energy conversion units connected to the charging node where the activated charging gun is located; when an inactive energy conversion unit is found, close the contactor switching unit between the charging node where the inactive energy conversion unit is located and the charging node where the activated charging gun is located, and inject the energy from the inactive energy conversion unit into the activated charging gun; including further: when the sum of the energy of the energy conversion units connected to the activated charging gun and the energy of all inactive energy conversion units is less than the required energy of the activated charging gun, search the chaotic topology distribution network for charging station energy to determine whether or not there is a second type of energy conversion unit among the energy conversion units connected to the charging node where the occupied energy conversion unit is located, the second type of conversion unit

2.

3. energy being an energy conversion unit already occupied by other charging guns with a lower utilization rate than the energy conversion unit occupied by the activated charging gun; when the second type of energy conversion unit is found, close the contactor switching unit between the charging node where the second type of energy conversion unit is located and the charging node where the activated charging gun is located, and inject the energy from the second type of energy conversion unit into the activated charging gun. A DC power distribution method for charging stations based on a chaotic topology according to claim 1, characterized in that the step of using a Gaussian kernel function to extend one dimension of the initial chaotic topology distribution network for a charging station power to a high-dimensional surface in order to obtain a chaotic topology distribution network for a charging station power with multiple charging nodes (S2) comprises: using the Gaussian kernel function to extend dimensions of the initial chaotic topology distribution network for a charging station power; based on a maximum degree of freedom of the load nodes, reduce the dimension of the initial chaotic topology extended dimension distribution network for a charging station energy in order to obtain the chaotic topology distribution network for a charging station energy. DC power distribution system for charging stations based on a chaotic topology, configured to implement the DC power distribution method for charging stations based on a chaotic topology according to claim 1 or 2, characterized in that it comprises: an initial distribution network establishment module with chaotic topology, configured to establish, according to user requirements, an initial distribution network with chaotic topology for a charging station power based on a matrix topology network (SI); a dimension extension module, configured to use a Gaussian kernel function to extend one dimension of the initial chaotic topology distribution network for an energy of charging station with a high-dimensional surface to obtain a chaotic topology distribution network for charging station energy with multiple charging nodes (S2), each charging node being equipped with a charging gun and an energy conversion unit connected to the charging gun, and contactor switching units being installed between charging nodes with link relationships; a control module, configured, on the basis of the chaotic topology distribution network for charging station energy, the energy required from each charging gun and an energy distribution strategy, to control the closing and opening of the contactor switching units to direct an output energy from the energy conversion units (S3).

4. Charging station, characterized in that the charging station includes the DC power distribution system for charging stations based on a chaotic topology according to claim 3.

5. DC power distribution device for charging stations based on a chaotic topology, characterized in that it comprises a processor and a memory, in which the memory stores a computer program and, when the computer program is executed by the processor, the steps of the method of DC power distribution for charging stations based on a chaotic topology according to any one of claims 1 or 2 are implemented.

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