Topology applied to power distribution of charging pile and charging pile

Abstract

The utility model relates to the technical field of charging pile, concretely is a kind of topology structure and charging pile applied to the power distribution of charging pile, topology structure includes multiple inner rings, the inner ring includes multiple charging modules, multiple the charging module and multiple output port one-to-one corresponding connection, arbitrary two charging modules in the inner ring are connected through direct-current contactor, each the inner ring has a charging module as outer module, and the outer module between arbitrary two the inner ring is connected through direct-current contactor and forms outer ring;Charging pile includes the topology structure;The utility model can also reduce the quantity of direct-current contactor under the condition of meeting full flexible scheduling, reduce the cost of equipment.

Description

Technical Field

[0001] This utility model relates to the field of charging pile technology, and in particular to a topology structure and charging pile used for power distribution in charging piles. Background Technology

[0002] With the increasing number of high-voltage, high-current new energy vehicles on the market, the demand for rapid charging has led to a surge in charging pile products. Charging pile power distribution units generally employ fully flexible distribution, meaning each charging module can be dispatched to any charging port. However, the more charging modules there are, the more DC contactors are required. For example, dispatching 20 charging modules would require 380 DC contactors, resulting in significant cost. Some manufacturers use ring control to save costs, requiring 40 DC contactors for 20 charging modules. However, this approach has obvious drawbacks: inflexible switching and low power utilization.

[0003] Although standards for charging pile interfaces and other related technologies have been unified, the issue of "backward compatibility" remains unresolved. "Backward compatibility" refers to the ability of charging piles to adapt to and charge electric vehicles with higher charging power, more advanced charging technologies, or newer types of electric vehicles that will be introduced later. As battery technology continues to advance, the demand for charging infrastructure from new energy vehicles will continue to increase. Whether currently built charging piles are suitable for future new energy vehicles has become a major challenge for the industry. Charging stacks can solve the "backward compatibility" problem. Charging stacks do not need to consider charging rate and battery capacity during charging; they only need to charge according to the power required by the battery. In the future, as battery energy density and capacity increase, charging stacks can still achieve charging by increasing the charging power, thus effectively solving the "backward compatibility" problem of charging piles.

[0004] Therefore, it is necessary to improve the existing charging piles so that the number of DC contactors can be reduced while meeting the requirements of fully flexible scheduling, thereby reducing the cost of the equipment. Utility Model Content

[0005] In view of this, the purpose of this utility model embodiment is to provide a topology and charging pile for power distribution in charging piles, so as to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0006] On one hand, this utility model embodiment provides a topology structure for power distribution of a charging pile, including multiple inner rings, each inner ring including multiple charging modules, the multiple charging modules and multiple output ports being connected one-to-one, any two charging modules in the inner ring being connected through a DC contactor, each inner ring having a charging module as an external module, any two external modules in the inner ring being connected through a DC contactor to form an outer ring.

[0007] Optionally, the multiple output ports and multiple charging guns are connected in a one-to-one correspondence.

[0008] Optionally, the charging terminal is divided into a fast charging terminal and a liquid cooling terminal. The fast charging terminal is connected to one or two charging guns, and the liquid cooling terminal is connected to one charging gun.

[0009] On the other hand, this utility model embodiment provides a charging pile, including any of the above-mentioned topologies applied to the power distribution of the charging pile.

[0010] Optionally, the charging stack further includes a main cabinet, which is equipped with a remote information control unit and a power control unit. The charging terminal is equipped with a charging control unit, and the remote information control unit is communicatively connected to the charging control unit and the power control unit, respectively.

[0011] Optionally, the remote information control unit is communicatively connected to the cloud platform.

[0012] Optionally, the power control units in different charging piles are connected via a CAN bus.

[0013] The present invention provides the following advantages: the topology and charging pile for power distribution provided in this embodiment, by adopting an architecture combining inner and outer loops, meets the fully flexible power distribution requirements of the charging pile power distribution unit with fewer contactors. It can reduce the number of DC contactors while meeting fully flexible scheduling requirements, thereby reducing equipment costs, and is compatible with different specifications of fast charging terminals and liquid-cooled terminals. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a topology block diagram for power distribution in a charging pile, provided by an embodiment of the present invention.

[0016] Figure 2 yes Figure 1 The connection diagram of each charging module in the inner ring;

[0017] Figure 3 This is a diagram of the charging pile control architecture provided in an embodiment of the present invention;

[0018] Figure 4 This is a diagram of the charging stack and cabinet control architecture provided in this embodiment of the utility model. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0020] It should be noted that although functional modules are divided in the device schematic diagram and a logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than the module division in the device or the order in the flowchart. The terms "first," "second," etc., in the specification, claims, and the aforementioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit this application.

[0022] The technical terms used in this utility model will be explained below:

[0023] TCU (Telematics Control Unit) is an important component of the electric vehicle network. It collects vehicle sensor data, processes and analyzes the data, and transmits it to a cloud platform via a communication network to enable remote vehicle diagnostics, fault alarms, and remote control.

[0024] The PCU (Power Control Unit) is responsible for the power distribution and scheduling of the charging module, ensuring the stable operation of the overall system, efficiently distributing electrical energy, improving charging efficiency, and ensuring the safety and reliability of the charging process.

[0025] The CCU (Charging Control Unit) is responsible for communicating and exchanging data with the vehicle to ensure a safe and efficient charging process, monitor the charging status in real time, adjust the output power, optimize the charging experience, and ensure seamless connection between the vehicle and the charging terminal.

[0026] like Figure 1 and Figure 2 As shown, Figure 1 The topology for power distribution in a charging pile provided in this embodiment of the present invention includes multiple inner rings 100, each inner ring 100 including multiple charging modules 200, with each charging module 200 and multiple output ports 300 connected in a one-to-one correspondence. Any two charging modules 200 in the inner ring 100 are connected via a DC contactor 400. Each inner ring 100 has one charging module 200 as an external module 210, and any two external modules 210 in the inner ring 100 are connected via a DC contactor 400 to form an outer ring.

[0027] Figure 1 This is a block diagram showing the connections between the inner rings 100 of the charging stack. Figure 2 This is a block diagram of the overall topology of the charging modules 200 in the charging stack. In this invention, the power of the charging modules 200 can be 40kW, 60kW, or 80kW, with a quantity of 15 modules, corresponding to a total main cabinet power of 800kW, 1.2MW, and 1.6MW respectively. Every five charging modules 200 form an inner ring 100. The switching between the five charging modules 200 in the inner ring 100 adopts a star topology, with power switching performed via DC contactors 400. Each inner ring 100 can output up to four channels, i.e., it is equipped with four charging guns. Each charging gun can schedule any charging module 200 in the inner ring 100. Ring 1 (1p) corresponds to charging modules 1 to 5 (200), including ports 1 to 4; Ring 2 (2p) corresponds to charging modules 6 to 10 (200), including ports 5 to 8; Ring 3 (3p) corresponds to charging modules 11 to 15 (200), including ports 9 to 12. Rings 1, 2, and 3 are called inner rings 100, and these three inner rings 100 form an outer ring. Different inner rings 100 can be arbitrarily scheduled.

[0028] This invention provides a topology and charging pile for power distribution in charging piles, which can reduce the number of DC contactors 400 and reduce equipment costs while meeting fully flexible scheduling requirements.

[0029] In some embodiments, the plurality of output ports 300 are connected to the plurality of charging guns in a one-to-one correspondence.

[0030] Figure 2The inner ring 100 adopts a four-ring architecture, with each inner ring 100 consisting of 10 DC contactors 400 and 5 charging modules 200 (40kW / 60kW / 80kW), and each ring has four outputs. The four output ports 300 connect to fast charging terminals or liquid cooling terminals. The outer ring adopts a star architecture, consisting of 3 inner rings 100 and 6 DC contactors 400, thus achieving flexible scheduling of each module. The total power of the charging pile can be expanded according to the power of the charging modules 200. M1~M15 represent charging modules 200 1 to 15 respectively; channels 1 to 12 represent output ports 300 of charging gun 1 to 12 respectively.

[0031] In some embodiments, the charging terminal is divided into a fast charging terminal and a liquid cooling terminal. The fast charging terminal is connected to one or two charging guns, and the liquid cooling terminal is connected to one charging gun.

[0032] Specifically, the charging terminals are divided into two types: fast charging terminals and liquid-cooled terminals. Fast charging terminals can connect to one or two charging guns, while liquid-cooled terminals connect to one charging gun. If a charging terminal is connected to one charging gun, the power of the charging module 200 corresponding to that charging gun is used as the charging power of the charging terminal. If two charging guns are connected, the sum of the power of the charging modules 200 corresponding to the two charging guns is used as the charging power of the charging terminal, thereby determining the initial charging power of the charging terminal.

[0033] This utility model provides a topology for power distribution in a charging pile, the working principle of which is as follows:

[0034] After a charging terminal requests charging, the system first obtains the charging terminal's required power and its corresponding charging module 200. Based on the charging module 200, the charging terminal's charging power is determined. If the charging power is determined to be lower than the required power, then idle modules in the inner ring 100 containing the charging module 200 are sequentially gathered to the charging terminal. The charging terminal's charging power is then added to the power of the gathered charging modules 200, and the charging terminal's charging power is updated. The system continuously checks whether the charging power has reached the required power. If the charging power has reached the required power, the process ends; otherwise, it continues to gather idle modules in the inner ring 100 to the charging terminal, by... Idle modules are sequentially gathered to the charging terminal to achieve the required charging power. If the charging power still does not reach the required power after all idle modules in the inner ring 100 have been gathered to the charging terminal, the type of the charging terminal is determined. If the charging terminal is a fast charging terminal, the idle modules in the outer ring are sequentially gathered to the charging terminal to achieve the required charging power. During the gathering process, the charging power of the charging terminal is updated to determine in real time whether the charging power has reached the required power. If the charging power has reached the required power, the process ends; otherwise, the idle modules in the outer ring continue to be gathered to the charging terminal until all idle modules in the outer ring have been gathered to the charging terminal.

[0035] If the charging terminal is a liquid-cooled terminal, then after the idle modules in the inner ring 100 where the charging module 200 is located are gathered to the charging terminal, the calling modules in the inner ring 100 where the charging module 200 is located are also gathered to the charging terminal so that the charging power reaches the required power. During the gathering process, the charging power of the charging terminal is updated, and it is determined in real time whether the charging power has reached the required power. If the charging power has reached the required power, the process ends; otherwise, the idle modules and calling modules in the outer ring are gathered to the charging terminal in sequence so that the charging power reaches the required power.

[0036] This invention employs an architecture combining an inner ring 100 and an outer ring, using fewer contactors to meet the requirements of fully flexible power distribution in the charging pile power distribution unit. It can reduce the number of DC contactors 400 while still achieving fully flexible scheduling, thus reducing equipment costs, and is compatible with different specifications of fast charging terminals and liquid-cooled terminals.

[0037] This utility model embodiment also provides a charging pile, including the topology used for power distribution of the charging pile in any of the above embodiments.

[0038] It is evident that the contents of the above device embodiments are all applicable to this charging pile embodiment. The specific functions implemented in this charging pile embodiment are the same as those in the above device embodiments, and the beneficial effects achieved are also the same as those achieved in the above device embodiments.

[0039] like Figure 3 As shown, in some embodiments, the charging stack further includes a main cabinet, which is equipped with a remote information control unit 500 and a power control unit 600. The charging terminal is equipped with a charging control unit 700, and the remote information control unit 500 is communicatively connected to the charging control unit 700 and the power control unit 600, respectively.

[0040] Specifically, the remote information control unit 500 is located in the main cabinet, and its main functions are data storage, charging billing, and interaction with the cloud platform. The power control unit 600 is also located in the main cabinet, and its main functions are starting and stopping the charging module 200 and switching the power module. The charging control unit 700 is located in the charging terminal, which is divided into fast charging terminals (charging current of 300A and 400A) and liquid-cooled terminals (charging current of 600A, 800A, and 1000A). Each charging terminal is equipped with one charging control unit 700, which can control a maximum of two charging guns. Fast charging terminals can be configured with either a single or dual gun, but liquid-cooled terminals can only be configured with a single gun. The main functions of the charging terminal are data interaction with the vehicle, electrical protection, insulation detection, charging capacity metering, and output control.

[0041] In some embodiments, the remote information control unit 500 is communicatively connected to a cloud platform.

[0042] like Figure 4 As shown, in some embodiments, the power control units 600 in different charging piles are connected via a CAN bus.

[0043] Specifically, the power control units 600 are connected via a CAN bus. By connecting the power control units 600 in two charging piles, multiple charging piles can be connected in parallel.

[0044] The terms "first," "second," "third," "fourth," etc. (if present) in the specification and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0045] It should be understood that in this application, "at least one (item)" means one or more, and "more than" means two or more. "And / or" is used to describe the relationship between related objects, indicating that three relationships can exist. For example, "A and / or B" can represent three cases: only A exists, only B exists, and both A and B exist simultaneously, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one (item) of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one (item) of a, b, or c can represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.

[0046] The preferred embodiments of the present application have been described above with reference to the accompanying drawings, but this does not limit the scope of the claims of the present application. Any modifications, equivalent substitutions, and improvements made by those skilled in the art without departing from the scope and substance of the embodiments of the present application shall be within the scope of the claims of the present application.

Claims

1. A topology for power distribution in a charging pile, characterized in that, It includes multiple inner rings, each inner ring containing multiple charging modules. The multiple charging modules and multiple output ports are connected in a one-to-one correspondence. Any two charging modules in the inner ring are connected through a DC contactor. Each inner ring has one charging module as an external module. Any two external modules in the inner ring are connected through a DC contactor to form an outer ring.

2. The topology according to claim 1, characterized in that, The multiple output ports and multiple charging guns are connected in a one-to-one correspondence.

3. The topology according to claim 2, characterized in that, The charging terminal is divided into a fast charging terminal and a liquid cooling terminal. The fast charging terminal is connected to one or two charging guns, and the liquid cooling terminal is connected to one charging gun.

4. A charging pile, characterized in that, Includes the topology for power distribution of a charging pile as described in any one of claims 1 to 3.

5. The charging stack according to claim 4, characterized in that, The charging stack also includes a main cabinet, which is equipped with a remote information control unit and a power control unit. The charging terminal is equipped with a charging control unit, and the remote information control unit is communicatively connected to the charging control unit and the power control unit.

6. The charging stack according to claim 5, characterized in that, The remote information control unit is connected to the cloud platform.

7. The charging stack according to claim 5, characterized in that, The power control units in different charging piles are connected via CAN bus communication.

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