Power distribution device and charging pile

Abstract

The utility model discloses a power distribution device and a charging pile, and the power distribution device comprises a box body, a module power switching assembly, a DC output on-off assembly, an electrical connection assembly, a plug-in terminal, and a first copper bar assembly. And plug-in electrical connection with the electric energy conversion module is realized based on the plug-in terminal and the first copper bar assembly, and electrical connection or disconnection can be realized without dismounting a cable, so that the maintenance difficulty is reduced, the dismounting time is greatly reduced, and the convenience of field maintenance is improved. Meanwhile, the module power switching assembly and the direct current output on-off assembly are divided into two layers, and the upper layer and the lower layer are arranged next to each other, so that the electrical connection distance is short, the consumption of electrical connection materials (copper bars) is reduced, and the cost is indirectly saved.

Description

Technical Field

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

[0002] In existing DC charging pile power distribution systems, the module power switching devices and DC output on / off and output protection devices are typically arranged in a distributed manner. Some manufacturers use a flat design, with the two connected electrically via cables or copper busbars. However, because these components are far apart and need to meet insulation requirements with surrounding devices, the design of the cables or copper busbars is quite complex, increasing wiring difficulty and potentially affecting the electrical stability and reliability of the system.

[0003] Furthermore, in existing power distribution systems, the module power switching components and DC output on / off and output protection components are usually installed independently, making it difficult to disassemble and reassemble them as a whole, resulting in maintenance difficulties. Moreover, the connection between these components and the power conversion module relies on cable connections, which have numerous electrical connection points, making the disassembly and reassembly process complex, time-consuming, and increasing the difficulty of subsequent maintenance, thus affecting the system's maintenance efficiency and reliability. Utility Model Content

[0004] The main objective of this invention is to provide a power distribution device and a charging pile, so as to at least solve the technical problems such as maintenance difficulties existing in the power distribution system in related technologies.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] In a first aspect, this utility model provides a power distribution device, comprising a housing, a modular power switching component, a DC output switching component, an electrical connection component, plug-in terminals, and a first copper busbar assembly. The housing has an internal cavity, within which the modular power switching component and the DC output switching component are disposed. The electrical connection component is located between the modular power switching component and the DC output switching component. The plug-in terminals are fixed to the rear panel of the housing. The first copper busbar assembly is connected to the plug-in terminals and electrically connected to the modular power switching component via the plug-in terminals. The modular power switching component forms a plug-in connection with a power conversion module through the plug-in terminals and the first copper busbar assembly to control the electrical conduction or disconnection of the power distribution device.

[0007] Based on the first aspect, the power distribution device further includes a second copper busbar assembly; the second copper busbar assembly is disposed outside the cavity and is connected to the electrical connection assembly through the first copper busbar assembly.

[0008] Based on the first aspect, the second copper busbar assembly has a plurality of threaded holes at one end away from the mating terminal, the threaded holes being used to connect with the power conversion module.

[0009] Based on the first aspect, the mating terminal includes a copper spring and an insulating housing disposed on the copper spring, the copper spring being electrically connected to the electrical connection assembly.

[0010] Based on the first aspect, the electrical connection component is a third copper busbar component, one end of which is electrically connected to the module power switching component, and the other end is electrically connected to the DC output switching component.

[0011] Based on the first aspect, the module power switching component and the DC output switching component are distributed in two layers, one above the other, in the height direction within the cavity.

[0012] Based on the first aspect, the enclosure includes a front shell, a rear panel, a top cover, and a main enclosure, which are assembled to form the enclosure.

[0013] Based on the first aspect, the front housing of the enclosure away from the plug-in terminal is provided with a plurality of positioning holes, which are adapted to the fixed end of the DC output switching component.

[0014] Based on the first aspect, there are multiple second copper busbar assemblies, and the multiple second copper busbar assemblies are arranged linearly in the length direction of the cavity.

[0015] A second aspect of this utility model provides a charging pile, including a charging pile body and a power distribution device as described in the first aspect.

[0016] This utility model discloses a power distribution device and charging pile. By integrating the modular power switching component and the DC output switching component within the cavity of the housing, and achieving plug-in electrical connection with the power conversion module based on the plug-in terminals and the first copper busbar assembly, electrical conduction or disconnection can be achieved without disassembling cables, reducing maintenance difficulty, significantly reducing disassembly and assembly time, and improving the convenience of on-site maintenance. Furthermore, the modular power switching component and the DC output switching component are divided into two layers, with the upper and lower layers placed adjacent to each other, resulting in a short electrical connection distance and reducing the amount of electrical connection materials (copper busbar), indirectly saving costs. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A three-dimensional schematic diagram of a power distribution device provided in an embodiment of this application;

[0019] Figure 2 for Figure 1 A 3D schematic diagram after part of the shell has been removed;

[0020] Figure 3 A schematic diagram showing the components of the power distribution device provided in the embodiments of this application;

[0021] Figure 4 for Figure 3 A magnified view of part A in the diagram. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0023] It should be noted that related terms such as "first" and "second" can be used to describe various components, but these terms do not limit the component. These terms are only used to distinguish one component from another. For example, without departing from the scope of this utility model, the first component can be referred to as the second component, and the second component can similarly be referred to as the first component. The term "and / or" refers to any one or more combinations of related and descriptive terms.

[0024] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 This application provides a power distribution device, which includes a housing 5, a module power switching component 2, a DC output switching component 1, an electrical connection component 6, a plug-in terminal 3, and a first copper busbar component 4.

[0025] Specifically, the enclosure 5 has an internal cavity for accommodating the various components in the power distribution device. For example, the module power switching component 2 and the DC output switching component 1 can be housed within the cavity of the enclosure 5. Furthermore, they are electrically connected via an electrical connection component 6, which is electrically connected between the module power switching component 2 and the DC output switching component 1.

[0026] In addition, a plug-in terminal 3 is provided on the rear panel of the housing 5. One end of the plug-in terminal 3 is electrically connected to the module power switching component 2, and the other end is electrically connected to the first copper busbar assembly 4, allowing the first copper busbar assembly 4 to be electrically connected to the module power switching component 2 via the plug-in terminal 3. That is, the plug-in terminal 3, while providing electrical connection, enables the module power switching component 2 to be quickly plugged in and out. Furthermore, the connection between the first copper busbar assembly 4 and the plug-in terminal 3 achieves efficient current transmission and reduces energy loss.

[0027] In the power distribution device of this embodiment, the modular power switching component 2 forms a pluggable connection with the power conversion module (external) through the plug-in terminal 3 and the first copper busbar assembly 4 to control the electrical conduction or disconnection of the power distribution device. That is, under normal operating conditions, the modular power switching component 2 forms an electrical connection with the power conversion module through the plug-in terminal 3 and the first copper busbar assembly 4, so that the charging pile or other equipment can obtain the required power output. When maintenance or replacement of the modular power switching component 2 is required, electrical disconnection can be achieved simply by unplugging the component, without disassembling or reassembling cables, reducing maintenance difficulty, significantly reducing disassembly and assembly time, and improving the convenience of on-site maintenance.

[0028] Furthermore, the modular power switching component 2 and the DC output switching component 1 are arranged in two layers, one above the other, along the height of the cavity. That is, the modular power switching component 2 and the DC output switching component 1 adopt a double-layer layout, placed closely together vertically. This design effectively shortens the electrical connection path, reduces the use of copper busbar material, improves the overall electrical efficiency of the system, and reduces costs.

[0029] The following is a detailed description of some of the components in the power distribution device:

[0030] The modular power switching component 2 can be a power electronic switching device (a key component for power control and management, used to control the on / off state of the power module). It typically consists of contactors, relays, solid-state relays (SSRs), circuit breakers, or MOSFET / IGBT power semiconductor devices. Its core function is to control the on / off state of the power module, thereby achieving power distribution and management. In this power distribution device, the modular power switching component 2 is mainly responsible for controlling the input and output of the power conversion module, enabling it to activate or disconnect specific power channels according to actual needs.

[0031] The DC output switching component 1 is the core component for controlling DC power output and providing protection. Its main function is to manage the switching of DC power and provide protection under overload, short circuit, or other abnormal conditions. In this embodiment, the DC output switching component 1 can be composed of protection devices such as DC contactors, DC relays, solid-state relays (SSRs), DC circuit breakers (DC MCBs / MCCBs), fuses, and TVS diodes, used to control the DC output of the power distribution device and ensure the safe operation of the system.

[0032] The first copper busbar assembly 4 is a crucial conductive connection component within the power distribution device. It carries and distributes large currents and connects different power modules (such as the module power switching assembly 2, the plug-in terminal 3, and the DC output switching assembly 1) to achieve efficient power transmission. A copper busbar is a highly conductive metal strip or plate conductor, typically made of high-purity copper (such as T2 copper) or aluminum. Its surface can be plated with tin, silver, or nickel to improve oxidation resistance and conductivity. In this power distribution device, the first copper busbar assembly 4 connects to the plug-in terminal 3 and, through this terminal, is electrically connected to the module power switching assembly 2, ensuring stable power transmission and efficient system operation.

[0033] In an optional embodiment of this example, the power distribution device further includes a second copper busbar assembly 7, which is disposed outside the cavity and connected to the electrical connection assembly 6 via the first copper busbar assembly 4.

[0034] Specifically, the second copper busbar assembly 7 (primarily for connection to the external power conversion module) optimizes power distribution paths, making current transmission more efficient and further improving the device's adaptability to charging piles or power equipment of different power levels. Furthermore, the externally mounted second copper busbar assembly 7 reduces the space occupied inside the enclosure, improves heat dissipation, and thus enhances the device's stability and durability.

[0035] In an optional embodiment of this invention, the second copper busbar assembly 7 has a plurality of threaded holes 71 at the end away from the mating terminal 3. These threaded holes 71 are used for connection with the power conversion module. Alternatively, quick-connect terminals can be used instead of threaded holes to improve installation efficiency and reduce installation steps. Furthermore, by adding additional elastic clamping devices, the copper busbar can be connected to the power conversion module via elastic clamping, thereby reducing threaded locking operations and improving connection reliability.

[0036] It should be noted that the first copper busbar assembly 4 and the second copper busbar assembly 7 are typically made of highly conductive copper material to ensure low resistance and efficient energy transfer. In alternative embodiments, aluminum alloy copper busbars or silver-plated copper busbars can be used instead to reduce costs or improve oxidation resistance. Furthermore, in high-power applications, multi-layer composite copper busbars can be used to improve durability and conductivity.

[0037] In an optional embodiment of this invention, the mating terminal includes a copper spring and an insulating shell disposed on the copper spring, the copper spring being electrically connected to the electrical connection assembly. Specifically, the mating terminal formed by the copper spring and the insulating shell enhances the reliability and strength of the electrical connection, and improves the durability and safety of the plug-in connection.

[0038] In an optional embodiment of this example, the electrical connection component 6 is a third copper busbar assembly. One end of the third copper busbar assembly is electrically connected to the module power switching component 2, and the other end is electrically connected to the DC output switching component 1. Specifically, the advantage of using a third copper busbar assembly as the electrical connection component 6 is that it makes the electrical connection more compact, improves the stability of power transmission, and optimizes the overall structure.

[0039] It should be noted that the third copper busbar assembly can take various forms. For example, it can employ a multi-layer copper busbar stacked structure to increase current carrying capacity, suitable for high-power charging piles or high-current applications. Alternatively, it can be designed as a flexible copper busbar (such as a braided copper busbar), suitable for applications requiring a certain degree of mechanical buffering or mobility, such as mobile power distribution devices. Another option is to use a one-piece molded copper busbar to reduce connection points, lower contact resistance, and improve overall stability.

[0040] In an optional embodiment of this example, the enclosure includes a front shell, a rear panel, a top cover, and a main enclosure, which are assembled to form the enclosure.

[0041] Specifically, the front housing encloses the front of the equipment and provides necessary operating interfaces, display windows, and heat dissipation channels. The rear panel secures the plug-in terminals, the top cover protects the internal components, and the main enclosure serves as the structural support for all electrical components. The enclosure employs a modular design, with each panel connected via quick-release clips or sliding rails, allowing maintenance personnel to quickly disassemble the front housing or top cover for inspection and replacement of internal components. Simultaneously, the rear panel features a reinforcing rib structure to enhance overall rigidity and withstand high-vibration environments (such as outdoor charging station applications).

[0042] In an optional embodiment of this example, the front housing of the housing 5, away from the plug-in terminals, is provided with a plurality of positioning holes 200. The positioning holes 200 are adapted to the fixed end of the DC output switching component to ensure the stable installation of the component and improve assembly accuracy and maintenance convenience.

[0043] In an optional embodiment of this invention, there are multiple second copper busbar assemblies arranged linearly along the length of the cavity. Specifically, the multiple second copper busbar assemblies are arranged sequentially along the length of the housing 5 and positioned using a pre-set fixing structure (such as an insulating bracket or mounting studs) to ensure that each copper busbar assembly maintains a reasonable spacing and avoids the risk of short circuits. This linear arrangement not only makes the power distribution more uniform but also reduces the current transmission path and improves the overall energy transmission efficiency.

[0044] This embodiment also provides a charging pile, including a charging pile body and a power distribution device as described in the above embodiment.

[0045] This utility model discloses a power distribution device and charging pile. By integrating the modular power switching component and the DC output switching component within the cavity of a housing, and achieving plug-in electrical connection with the power conversion module based on plug-in terminals and a first copper busbar assembly, electrical conduction or disconnection can be achieved without disassembling cables, reducing maintenance difficulty, significantly shortening disassembly and assembly time, and improving the convenience of on-site maintenance. Simultaneously, the modular power switching component and the DC output switching component are divided into two layers, with the upper and lower layers placed adjacent to each other, resulting in a short electrical connection distance and reducing the amount of electrical connection materials (copper busbar), indirectly saving costs. Furthermore, the components related to DC control and output functions are highly integrated within a single housing, featuring a modular design, grouped by function, and assembled independently, saving space and assembly time.

[0046] The specific embodiments of the utility model have been described in detail above, but they are only examples, and the utility model is not limited to the specific embodiments described above. For those skilled in the art, any equivalent modifications or substitutions to the utility model are also within the scope of the utility model. Therefore, all equivalent transformations, modifications, and improvements made without departing from the spirit and principles of the utility model should be covered within the scope of the utility model.

Claims

1. A power distribution device, characterized in that, The power distribution device includes: The box has an internal cavity; The module power switching component is disposed within the cavity of the housing; A DC output switching component is disposed within the cavity of the housing; An electrical connection component is disposed between the module power switching component and the DC output switching component; The mating terminals are fixed to the rear panel of the housing. The first copper busbar assembly is connected to the plug-in terminal and is electrically connected to the module power switching assembly through the plug-in terminal; The module power switching component is connected to the power conversion module via the plug-in terminals and the first copper busbar assembly to control the electrical conduction or disconnection of the power distribution device.

2. The power distribution device as described in claim 1, characterized in that, The power distribution device also includes a second copper busbar assembly; The second copper busbar assembly is disposed outside the cavity and is connected to the electrical connection assembly via the first copper busbar assembly.

3. The power distribution device as described in claim 2, characterized in that, The second copper busbar assembly has several threaded holes at one end away from the mating terminal, and the threaded holes are used to connect with the power conversion module.

4. The power distribution device as described in claim 3, characterized in that, The mating terminal includes a copper spring and an insulating shell disposed on the copper spring, and the copper spring is electrically connected to the electrical connection assembly.

5. The power distribution device as described in claim 4, characterized in that, The electrical connection component is a third copper busbar assembly, one end of which is electrically connected to the module power switching component, and the other end is electrically connected to the DC output switching component.

6. The power distribution device as described in claim 5, characterized in that, The module power switching component and the DC output switching component are distributed in two layers, one above the other, in the height direction within the cavity.

7. The power distribution device as claimed in claim 1, characterized in that, The enclosure includes a front shell, a rear panel, a top cover, and a main body, which are assembled to form the enclosure.

8. The power distribution device as claimed in claim 7, characterized in that, The front housing of the enclosure, away from the plug-in terminal, has several positioning holes, which are adapted to the fixed end of the DC output switching component.

9. The power distribution device as claimed in claim 2, characterized in that, The number of the second copper busbar assemblies is multiple, and the multiple second copper busbar assemblies are arranged linearly in the length direction of the cavity.

10. A charging pile, characterized in that, It includes the charging pile body and the power distribution device as described in any one of claims 1 to 9.

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