A medium and low voltage bidirectional flexible interconnection device

Abstract

The utility model discloses a kind of low voltage bidirectional flexible interconnection devices, including energy supply mechanism, dustproof mechanism and dust blocking mechanism, the energy supply mechanism includes bottom plate, multilevel converter and double active bridge converter integrated in the top of the bottom plate, and front plate connected with the top of the bottom plate.In the utility model, when port is not connected with connecting line, the entity part of dust blocking paddle completely covers the front side of port, forming a fully enclosed dustproof structure, when it is necessary to connect with connecting line, rotate dust blocking paddle to make its U-shaped opening downward positioning, then turn up the flap, the outer end of flap and the U-shaped profile of dust blocking paddle are adaptively attached, a connecting line introduction aperture is formed between them, which can not only ensure the stable connection of connecting line into port, but also maintain the dustproof effect through double protection structure. This linkage design not only ensures the protection level of port, but also avoids the damage of connecting line bending, realizes the unity of operation safety and equipment reliability.

Description

Technical Field

[0001] This utility model relates to the field of AC power distribution network technology, specifically to a medium- and low-voltage bidirectional flexible interconnection device. Background Technology

[0002] As human society enters the Industry 4.0 era, reliance on non-renewable energy sources such as fossil fuels will continue to decrease, shifting towards increased reliance on green renewable energy sources such as wind and solar power. The integration of a large amount of renewable energy into the power grid presents a significant challenge in terms of efficient utilization and integration. Medium- and low-voltage AC / DC hybrid power grids are a key component in addressing this challenge. Simultaneously, the development of smart grid systems places higher demands on the stability and flexibility of power systems. Power transformers are crucial components of power systems, but their overly singular function is no longer sufficient for the requirements of smart grids. Energy routers—interconnection converters—are key devices for achieving grid interconnection and resolving energy distribution issues. They not only possess the conventional functions of voltage level transformation and electrical isolation found in traditional power transformers but also offer high stability and controllability, making them indispensable for future power grid development.

[0003] Application number CN202223100060.X specifically describes a flexible interconnection device for power distribution networks with multiple interfaces. It includes a mounting base and other structures, on which an AC / DC bidirectional converter is fixedly mounted. The converter is then protected by a protective casing. The protective casing has interfaces aligned with the input ports on the AC / DC bidirectional converter. During electrical connection, the connecting wire can be inserted from the interface into the input port, preventing the input port from being exposed and thus avoiding dust accumulation. However, in actual use, once the connecting wire is connected, a dustproof baffle, influenced by a connecting spring, presses against the top of the connecting wire, causing it to bend and damage the wire, increasing the failure rate. Utility Model Content

[0004] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0005] Therefore, the technical solution adopted by this utility model is as follows:

[0006] A medium-low voltage bidirectional flexible interconnection device includes a power supply mechanism, a dust prevention mechanism, and a dust blocking mechanism. The power supply mechanism includes a base plate, a multilevel converter and a dual active bridge converter integrated on the top of the base plate, a front plate connected to the top of the base plate, and multiple ports connected to the front plate. The multilevel converter and the dual active bridge converter are arranged in parallel, and the multiple ports are wired to the multilevel converter. The dust prevention mechanism includes a protective shell detachably sleeved on the outside of the multiple ports and attached to the top of the base plate, multiple bushings connected to the front side of the protective shell, and a dust blocking plate movably connected to the bushings. The dust blocking plate is attached to the front end of the port. The dust blocking mechanism includes multiple support plates connected to the front side of the base plate and a flip-top plate movably connected to the support plates. The flip-top plate is movably attached to the front side of the dust blocking plate.

[0007] By adopting the above technical solution, when no connecting cable is connected to the port, the solid part of the dust baffle completely covers the front side of the port, forming a fully enclosed dustproof structure. When a connecting cable needs to be connected, the dust baffle is rotated so that its U-shaped opening faces downwards and is positioned. Then, the flip cover is flipped up, and the outer end of the flip cover fits adaptively with the U-shaped contour of the dust baffle. A connecting cable introduction hole is formed between the two. This hole can ensure that the connecting cable can be stably connected to the port, and can also maintain the dustproof effect through the double protection structure. This linkage design can ensure the port protection level while avoiding bending damage to the connecting cable, thus achieving a balance between operational safety and equipment reliability.

[0008] In a preferred embodiment, the present invention can be further configured as follows: a reinforcing component is provided on the top of the base plate, the reinforcing component includes a rear plate connected to the top of the base plate, a plurality of columns respectively installed on the top of the front plate and the rear plate, and a rotating plate movably connected to the top of the column, the column vertically penetrating the top of the protective shell, and the bottom of the rotating plate fitting against the top of the protective shell.

[0009] In a preferred embodiment, the present invention can be further configured such that the diameter of the rotating blade is equal to the diameter of the column, and the rotating blade is eccentrically positioned relative to the column.

[0010] In a preferred embodiment, the present invention can be further configured such that: the multilevel converter and the dual active bridge converter are respectively close to both ends of the inner cavity of the housing; the front ends of the multilevel converter and the dual active bridge converter are both attached to the rear side of the front panel; and the rear ends of the multilevel converter and the front panel are both attached to the front side of the rear panel.

[0011] In a preferred embodiment, the present invention can be further configured such that: multiple bushings are respectively suspended on the top of multiple ports, and one end of the dust baffle is set as a plane and the other end is set as a U-shape.

[0012] In a preferred embodiment, the present invention can be further configured such that: a plurality of trays are suspended from the top of each tray, the protrusions are fixedly connected to the front side of the base plate, and the flip cover is movably engaged with the protrusions.

[0013] By adopting the above technical solution, the beneficial effects achieved by this utility model are as follows:

[0014] 1. In this utility model, when no connecting cable is connected to the port, the solid part of the dustproof baffle completely covers the front side of the port, forming a fully enclosed dustproof structure. When a connecting cable needs to be connected, the dustproof baffle is rotated so that its U-shaped opening faces downwards and is positioned. Then, the flip cover is flipped up, and the outer end of the flip cover fits adaptively with the U-shaped contour of the dustproof baffle, forming a connecting cable introduction hole between the two. This hole can ensure that the connecting cable can be stably connected to the port, and can also maintain the dustproof effect through the double protection structure. This linkage design can ensure the port protection level while avoiding bending damage to the connecting cable, thus achieving a balance between operational safety and equipment reliability.

[0015] 2. In this utility model, before use, an external bidirectional current controller needs to be configured on the inner side of each port. During actual operation, the multilevel converter provides low-voltage DC and low-voltage AC power to two ports simultaneously through its internal submodule capacitors, and achieves low-voltage output through parallel dual active bridge converters. The remaining port outputs medium-voltage AC power. Under the regulation of the bidirectional current controller, each port can achieve bidirectional current flow control. The structure is simple and reduces the equipment failure rate. Attached Figure Description

[0016] Figure 1 This is a perspective view of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the energy supply mechanism of this utility model;

[0018] Figure 3 This is a schematic diagram of the dustproof mechanism of this utility model;

[0019] Figure 4 This is a schematic diagram of the dust-blocking mechanism of this utility model;

[0020] Figure 5 This is a schematic diagram of the reinforcement component of this utility model.

[0021] Figure label:

[0022] 100. Power supply mechanism; 110. Base plate; 120. Multilevel converter; 130. Dual active bridge converter; 140. Front panel; 150. Port;

[0023] 200. Dustproof mechanism; 210. Protective housing; 220. Bushing; 230. Dust baffle plate;

[0024] 300. Dustproof mechanism; 310. Pallet; 320. Flip-top plate;

[0025] 400. Reinforcing component; 410. Rear plate; 420. Column; 430. Rotary blade;

[0026] 500, bump. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0028] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.

[0029] The following describes, with reference to the accompanying drawings, some embodiments of the present invention, providing a medium- and low-voltage bidirectional flexible interconnection device.

[0030] Example 1:

[0031] Combination Figure 1-5 As shown, the present invention provides a medium-low voltage bidirectional flexible interconnection device, including a power supply mechanism 100, a dust prevention mechanism 200, and a dust blocking mechanism 300. The power supply mechanism 100 includes a base plate 110, a multilevel converter 120 and a dual active bridge converter 130 integrated on the top of the base plate 110, a front plate 140 connected to the top of the base plate 110, and multiple ports 150 connected to the front plate 140. The multilevel converter 120 and the dual active bridge converter 130 are arranged in parallel, and the multiple ports 150 are all wired to the multilevel converter 120.

[0032] Dustproof mechanism 200, the dustproof mechanism 200 includes a protective shell 210 that is detachably sleeved on the outside of multiple ports 150 and attached to the top of the base plate 110, multiple bushings 220 connected to the front side of the protective shell 210, and a dust-blocking baffle 230 that is movably connected to the bushings 220, the dust-blocking baffle 230 being attached to the front end of the port 150;

[0033] The dust blocking mechanism 300 includes a plurality of support plates 310 connected to the front side of the base plate 110 and a flip cover plate 320 movably connected to the support plates 310. The flip cover plate 320 is movably attached to the front side of the dust blocking baffle plate 230.

[0034] Furthermore, multiple bushings 220 are suspended on top of multiple ports 150 respectively. One end of the dust baffle 230 is set as a plane and the other end is set as a U-shape. The layout design of the bushings 220 ensures that each dust baffle 230 has the ability to close the front end of the port 150.

[0035] Example 2:

[0036] Combination Figure 1 and Figure 5 As shown, based on Embodiment 1, the base plate 110 is provided with a reinforcing component 400 on its top. The reinforcing component 400 includes a rear plate 410 connected to the top of the base plate 110, a plurality of columns 420 respectively installed on the top of the front plate 140 and the rear plate 410, and a rotating plate 430 movably connected to the top of the column 420. The column 420 vertically penetrates the top of the protective shell 210, and the bottom of the rotating plate 430 fits against the top of the protective shell 210. The front plate 140 and the rear plate 410 cooperate to lift the protective shell 210, making it stably fit against the top of the base plate 110. Then, the plurality of columns 420 and the rotating plate 430 cooperate to limit and fix the protective shell 210, ensuring that the protective shell 210 effectively protects the multilevel converter 120 and the dual active bridge converter 130.

[0037] Furthermore, the diameter of the rotary blade 430 is equal to the diameter of the column 420. The rotary blade 430 and the column 420 are eccentrically arranged. The diameter of the rotary blade 430 is designed so that after it completely overlaps with the top of the column 420, it will not affect the column 420 penetrating the top of the protective shell 210.

[0038] Furthermore, the multilevel converter 120 and the dual active bridge converter 130 are respectively located near the two ends of the inner cavity of the housing 210. The front ends of the multilevel converter 120 and the dual active bridge converter 130 are both attached to the rear side of the front plate 140, and the rear ends of the multilevel converter 120 and the front plate 140 are both attached to the front side of the rear plate 410. This structural design effectively protects the multilevel converter 120 and the dual active bridge converter 130, reducing the probability of damage to both.

[0039] Example 3:

[0040] Combination Figure 1 and Figure 4 As shown, in the above embodiment, each of the multiple trays 310 has a protrusion 500 suspended on its top. The protrusion 500 is fixedly connected to the front side of the base plate 110, and the flip cover 320 is movably engaged with the protrusion 500. The protrusion 500 can firmly fix the flip cover 320 that is flipped upward.

[0041] The working principle and usage process of this utility model are as follows: Before using this device, an external bidirectional current controller needs to be configured on the inner side of each port 150. During actual operation, the multilevel converter 120 provides low-voltage DC and low-voltage AC power to two ports 150 simultaneously through its internal submodule capacitors, and achieves low-voltage output through the parallel dual active bridge converter 130. The remaining port 150 outputs medium-voltage AC power. Under the regulation of the bidirectional current controller, each port 150 can achieve bidirectional current flow control. When a port 150 is not connected to a connection line, its bottom flip cover 320 remains horizontally closed. At this time, the solid part of the dust baffle 230 completely covers the front of the port 150. A fully enclosed dustproof structure is formed. When a connecting cable needs to be connected, the dust baffle 230 is first rotated counterclockwise so that its U-shaped opening faces downwards. Then, the flip cover 320 is flipped up. The outer end of the flip cover 320 fits adaptively with the U-shaped contour of the dust baffle 230, forming a connecting cable introduction hole between the two. This hole can ensure that the connecting cable can be stably connected to the port 150, and can also maintain the dustproof effect through the double protection structure. This linkage design can ensure the protection level of the port 150 while avoiding bending damage to the connecting cable, thus achieving a balance between operational safety and equipment reliability.

[0042] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A medium- and low-voltage bidirectional flexible interconnection device, characterized in that, include: The power supply mechanism (100) includes a base plate (110), a multilevel converter (120) and a dual active bridge converter (130) integrated on the top of the base plate (110), a front plate (140) connected to the top of the base plate (110), and multiple ports (150) connected to the front plate (140). The multilevel converter (120) and the dual active bridge converter (130) are connected in parallel, and the multiple ports (150) are all wired to the multilevel converter (120). A dustproof mechanism (200) includes a protective shell (210) detachably sleeved on the outside of multiple ports (150) and attached to the top of the base plate (110), multiple bushings (220) connected to the front side of the protective shell (210), and a dust-blocking baffle (230) movably connected to the bushings (220), wherein the dust-blocking baffle (230) is attached to the front end of the port (150); The dust blocking mechanism (300) includes a plurality of support plates (310) connected to the front side of the base plate (110) and a flip cover plate (320) movably connected to the support plates (310), the flip cover plate (320) being movably attached to the front side of the dust blocking baffle plate (230).

2. The medium-low voltage bidirectional flexible interconnection device according to claim 1, characterized in that, The bottom plate (110) is provided with a reinforcing component (400) on the top. The reinforcing component (400) includes a rear plate (410) connected to the top of the bottom plate (110), a plurality of columns (420) respectively installed on the top of the front plate (140) and the rear plate (410), and a rotating plate (430) movably connected to the top of the column (420). The column (420) vertically penetrates the top of the protective shell (210), and the bottom of the rotating plate (430) is attached to the top of the protective shell (210).

3. A medium-low voltage bidirectional flexible interconnection device according to claim 2, characterized in that, The diameter of the rotary blade (430) is equal to the diameter of the column (420), and the rotary blade (430) and the column (420) are eccentrically arranged.

4. A medium-low voltage bidirectional flexible interconnection device according to claim 2, characterized in that, The multilevel converter (120) and the dual active bridge converter (130) are respectively close to the two ends of the inner cavity of the protective shell (210). The front ends of the multilevel converter (120) and the dual active bridge converter (130) are attached to the rear side of the front plate (140), and the rear ends of the multilevel converter (120) and the front plate (140) are attached to the front side of the rear plate (410).

5. A medium-low voltage bidirectional flexible interconnection device according to claim 1, characterized in that, Multiple bushings (220) are suspended on top of multiple ports (150), and one end of the dust baffle (230) is set as a plane and the other end is set as a U-shape.

6. A medium-low voltage bidirectional flexible interconnection device according to claim 1, characterized in that, Each of the multiple trays (310) has a protrusion (500) suspended on its top. The protrusion (500) is fixed to the front side of the base plate (110), and the flip cover (320) is movably engaged with the protrusion (500).

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