Power distribution confluence cabinet

Abstract

The utility model discloses a power distribution confluence cabinet. The power distribution confluence cabinet comprises a cabinet body, a frame switch, a plurality of first line banks and a plurality of second line banks, the cabinet body is of a hollow frame structure and is provided with a confluence chamber. The first line banks are sequentially arranged at intervals in the width direction of the cabinet body and extend in the depth direction of the cabinet body, and the plane where the first line banks are located is perpendicular to the horizontal plane. The second line banks are sequentially arranged at intervals in the width direction of the cabinet body, the second line banks extend in the depth direction of the cabinet body, and the plane where the second line banks are located is perpendicular to the horizontal plane. The line banks of the power distribution confluence cabinet are not sequentially arranged in the depth direction of the cabinet body, but are sequentially arranged at intervals in the width direction of the cabinet body, cables connecting the line banks cannot be blocked front and back, when a certain cable is maintained, other cables do not need to be dismantled, and connection and maintenance of the cables are facilitated. The cabinet body is of a hollow frame structure, so that the size of the cabinet body is reduced, the heat dissipation performance is improved, and the space utilization rate is also improved.

Description

Technical Field

[0001] This utility model relates to the technical field of energy storage container power distribution combiner cabinets, and in particular to a power distribution combiner cabinet. Background Technology

[0002] Energy storage containers typically consist of a container body, multiple battery packs, and a power distribution unit (PDU). The container body has cavities, including battery compartments and electrical compartments, with the battery packs arranged sequentially within the battery compartments. The PDU is located in the electrical compartment. The PDU primarily collects the electrical energy from multiple battery packs or other power sources, forming a centralized power bus for easy distribution and transmission. The PDU also functions as a power distribution unit, providing circuit protection and status monitoring. Therefore, cables are required to connect the individual battery packs within the energy storage container to the PDU, and between the PDU and external power sources.

[0003] Existing power distribution combiner cabinets consist of a cabinet and multiple terminal blocks. The cabinet has a combiner compartment. Each terminal block is located within the combiner compartment, spaced apart along the depth of the cabinet and extending along its width. The plane containing the terminal blocks is perpendicular to the horizontal plane, and each terminal block provides some obstruction along the depth of the cabinet. This arrangement causes interference between cables during connection, requiring cables to be connected sequentially from the inside out along the cabinet's depth, which is inconvenient. When an internal wiring fault occurs, the external cables must be removed for repair, making the process cumbersome and reducing wiring and maintenance efficiency. Furthermore, existing power distribution combiner cabinets typically have an enclosed exterior panel, resulting in a bulky cabinet that occupies excessive installation space, leading to low space utilization. This is particularly problematic in space-constrained applications, making it difficult to meet practical needs. Additionally, the enclosed cabinet has low heat dissipation efficiency.

[0004] In view of the above, this utility model is hereby proposed. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a power distribution combiner cabinet.

[0006] The present invention adopts the following technical solution:

[0007] A power distribution combiner cabinet includes:

[0008] The cabinet is a hollow frame structure and has a junction chamber;

[0009] A frame switch, wherein the frame switch is disposed in the junction room;

[0010] Multiple first terminal blocks are provided, each of which is located in the junction room and connected to the frame switch. Each first terminal block is arranged at intervals along the width direction of the cabinet and extends along the depth direction of the cabinet. The plane in which the first terminal block is located is perpendicular to the horizontal plane.

[0011] Multiple second terminal blocks are provided, each of which is located in the junction room and connected to the frame switch. The second terminal blocks are arranged at intervals along the width of the cabinet and extend along the depth of the cabinet. The plane in which the second terminal blocks are located is perpendicular to the horizontal plane.

[0012] Optionally, the power distribution junction box includes multiple copper busbar fixing assemblies;

[0013] Each of the second terminal blocks and each of the first terminal blocks are respectively connected to the frame switch via a connecting block;

[0014] Each of the copper busbar fixing components is connected to the cabinet body;

[0015] Each of the copper busbar fixing components clamps and fixes any one or more of the connecting busbar, the first terminal block, and the second terminal block.

[0016] Optionally, the copper busbar fixing assembly includes two clamping plates;

[0017] Each of the copper busbar fixing components has two clamps respectively disposed on both sides of any one of the connecting busbar, the first terminal block and the second terminal block, one clamp is connected to the cabinet, and the two clamps are connected to clamp any one of the connecting busbar, the first terminal block and the second terminal block.

[0018] Optionally, the clamping plate is provided with a plurality of clamping parts, and each clamping part is arranged sequentially along the length direction of the clamping plate;

[0019] Each of the aforementioned clamping parts has a slot;

[0020] The connecting bar, the first terminal bar, and the second terminal bar are each inserted into the slots of the corresponding clamping parts on the two clamping plates along both sides of the width direction.

[0021] Optionally, the clamping part includes two motherboards spaced apart and a partition plate located between the two motherboards;

[0022] The partition forms the slots between the two motherboards respectively;

[0023] The connecting bar, the first terminal bar, and the second terminal bar each have two bar bodies, and the two bar bodies are respectively inserted into the two slots of the corresponding clamping part.

[0024] Optionally, the copper busbar fixing assembly includes fasteners;

[0025] The fasteners are respectively engaged with the two clamping plates to limit and fix any one of the connecting bar, the first terminal bar and the second terminal bar.

[0026] Optionally, the fastener includes a screw that passes through both clamping plates, a limiting body is provided at one end of the screw, and a nut is threaded onto the screw;

[0027] The nut and the limiting body are respectively positioned on the two clamps.

[0028] Optionally, the side of the clamp that contacts any one of the connecting bar, the first terminal block, and the second terminal block is provided with an elastic liner.

[0029] Optionally, along the height direction of the cabinet, both the first terminal block and the second terminal block are offset from the frame switch;

[0030] Each of the aforementioned connection bars is located on one side of the frame switch along the depth direction of the cabinet.

[0031] Optionally, the frame switch is connected to an adapter terminal;

[0032] The adapter terminal has a connecting plate, which is perpendicular to the horizontal plane;

[0033] The connecting strip is attached to the connecting plate.

[0034] By adopting the above technical solution, this application has the following beneficial effects:

[0035] The terminal blocks of the power distribution combiner cabinet in this application are not arranged sequentially along the depth of the cabinet, but rather spaced out along the width of the cabinet. This ensures that the cables connecting each terminal block do not obstruct each other, and that other cables do not need to be removed when repairing a particular cable, thus facilitating cable connection and maintenance. The cabinet's openwork frame structure reduces its size, improves heat dissipation, and increases space utilization.

[0036] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0037] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments and descriptions of the present invention are used to explain the present invention, but do not constitute an undue limitation of the present invention. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0038] Figure 1 This is a schematic diagram of the structure of the power distribution combiner cabinet provided in the embodiments of this application;

[0039] Figure 2 Another perspective view of the power distribution combiner cabinet provided in the embodiments of this application;

[0040] Figure 3 This is a partial structural schematic diagram of the power distribution combiner cabinet provided in the embodiments of this application;

[0041] Figure 4 A schematic diagram of the internal structure of the combiner compartment of the power distribution combiner cabinet provided in the embodiments of this application;

[0042] Figure 5 A schematic diagram of the clamping plate of the power distribution combiner cabinet provided in the embodiments of this application;

[0043] Figure 6 This is a partial internal structural diagram of the combiner compartment of the power distribution combiner cabinet provided in an embodiment of this application.

[0044] In the diagram: 1. Cabinet body; 2. Frame switch; 3. First terminal block; 4. Second terminal block; 5. Connecting block; 6. Copper busbar fixing assembly; 61. Clamping plate; 611. Clamping part; 6111. Main board; 6111. Partition plate; 6112. First connecting hole; 612. Adapter terminal; 7. Connecting plate; 71. Post insulator; 8. Insulating pad; 9.

[0045] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0047] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0048] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0049] See Figures 1 to 6 As shown in the illustration, this application provides a power distribution combiner cabinet, including: a cabinet body 1, a frame switch 2, multiple first terminal blocks 3, and multiple second terminal blocks 4. The cabinet body 1 is a hollow frame structure and has a combiner chamber. The frame switch 2 is disposed within the combiner chamber. Each first terminal block 3 is disposed within the combiner chamber and connected to the frame switch 2. The first terminal blocks 3 are spaced apart sequentially along the width direction of the cabinet body 1 and extend along the depth direction of the cabinet body 1. The plane containing the first terminal blocks 3 is perpendicular to the horizontal plane. Each first terminal block 3 can be connected to a PCS device of an energy storage system via cables. Each second terminal block 4 is disposed within the combiner chamber and connected to the frame switch 2. The second terminal blocks 4 are spaced apart sequentially along the width direction of the cabinet body 1 and extend along the depth direction of the cabinet body 1. The plane containing the second terminal blocks 4 is perpendicular to the horizontal plane. Each second terminal block 4 can be connected to a transformer on the power grid via cables. The terminal blocks of the power distribution combiner cabinet in this application are not arranged sequentially along the depth of the cabinet, but rather spaced out along the width of the cabinet. This ensures that the cables connecting each terminal block do not obstruct each other, and that other cables do not need to be removed when repairing a particular cable, thus facilitating cable connection and maintenance. The cabinet's openwork frame structure reduces its size, improves heat dissipation, and increases space utilization.

[0050] like Figure 2 , Figure 3 , Figure 4 and Figure 6As shown, the power distribution junction box includes multiple copper busbar fixing assemblies 6. Each second terminal block 4 and each first terminal block 3 is connected to the frame switch 2 via a connecting block 5. Each copper busbar fixing assembly 6 is connected to the cabinet body 1, and each copper busbar fixing assembly 6 can be fixed to the cabinet body 1 by welding or fastener connection. Each copper busbar fixing assembly 6 clamps and fixes any one or more of the connecting block 5, the first terminal block 3, and the second terminal block 4. Using the copper busbar fixing assembly 6 to clamp and fix the connecting block 5, the first terminal block 3, and the second terminal block 4 provides a more secure fixation.

[0051] like Figure 3 , Figure 4 and Figure 6 As shown, the copper busbar fixing assembly 6 includes two clamping plates 61. The two clamping plates 61 of each copper busbar fixing assembly 6 are respectively disposed on both sides of any one of the connecting busbar 5, the first terminal block 3, and the second terminal block 4. One clamping plate 61 is connected to the cabinet body 1, and the two clamping plates 61 are connected to clamp any one of the connecting busbar 5, the first terminal block 3, and the second terminal block 4. The clamping and fixing of the connecting busbar 5, the first terminal block 3, and the second terminal block 4 by the two clamping plates 61 provides a more secure fixation, preventing loosening and displacement.

[0052] like Figure 4 and Figure 5 As shown, the clamping plate 61 is provided with multiple clamping parts 611, which are arranged sequentially along the length direction of the clamping plate 61. Each clamping part 611 has a slot. Any one of the connecting strip 5, the first terminal block 3, and the second terminal block 4 is inserted into the slot of the corresponding clamping part 611 on two clamping plates 61 along its width direction. The insertion method is convenient to operate, has a better positioning effect, and provides better fixation stability.

[0053] like Figure 5 As shown, the clamping part 611 includes two main boards 6111 spaced apart and a partition plate 6112 located between the two main boards 6111. The partition plate 6112 forms slots between the two main boards 6111 respectively. The connecting strip 5, the first terminal block 3, and the second terminal block 4 each have two strips, and the two strips are respectively inserted into the two slots of the corresponding clamping part 611, so that the two strips have good positioning effect and good clamping stability.

[0054] In one possible implementation, the copper busbar fixing assembly 6 includes fasteners (not shown). The fasteners engage with two clamping plates 61, respectively, to clamp and secure any one of the connecting busbar 5, the first terminal block 3, and the second terminal block 4. The fasteners provide continuous pressure, preventing loosening due to vibration or thermal expansion and contraction, ensuring stable clamping force and strong resistance to displacement.

[0055] The fastener includes a screw (not shown) that passes through both clamping plates 61. A limiting body (not shown) is provided at one end of the screw. A nut (not shown) is threaded onto the screw, and the nut and the limiting body are respectively positioned on the two clamping plates 61. Figure 5 As shown, the clamping plate 61 is provided with a first connecting hole 612, and the positions of the first connecting holes 612 on the two clamping plates 61 are one-to-one. The cabinet body 1 includes multiple beams, and the beams are provided with second connecting holes (not shown). The fastener can be a long bolt, and the limiting body can be a bolt nut or other limiting structure. One end of the bolt passes through the first connecting hole 612 and the second connecting hole on the two clamping plates 61. The nut and the limiting body are respectively limited to the clamping plate 61 and the corresponding beam away from the beam.

[0056] In existing technologies, the second terminal block 4, the first terminal block 3, and the connecting block 5 are typically fixed using insulators. One end of the insulator usually has a threaded hole or mounting hole, which can be bolted to the cabinet 1 or a dedicated mounting bracket. The other end of the insulator connects to one or more of the connecting block 5, the first terminal block 3, and the second terminal block 4. The insulator fixation relies on a single support point, which may loosen or shift due to vibration, thermal expansion and contraction, etc. Especially under short-circuit current impact, the insulator may swing due to the single support point. The distribution busbar cabinet of this application uses multiple copper busbar fixing assemblies 6 instead of the traditional insulator fixing method. The two clamping plates 61 of the copper busbar fixing assembly 6 are fixed with fasteners to provide continuous pressure, preventing loosening due to vibration, thermal expansion and contraction. The fixing clamping force is stable, and the anti-displacement ability is strong. Especially under short-circuit current impact, the two clamping plates 61 can effectively restrain the deformation of the terminal block or connecting block 5, reducing the risk of phase-to-phase short circuits.

[0057] Some of the connecting bars 5 in the power distribution combiner cabinet have excessively long extension dimensions, and the middle position of the connecting bars 5 is prone to vibration. To prevent the connecting bars 5 from vibrating, the power distribution combiner cabinet of this application uses a set of copper busbar fixing components 6 to fix the middle position of each connecting bar 5 with excessively long extension dimensions, ensuring the stability of the fixing structure of the connecting bars 5. Insulating post insulators 8 are set between two adjacent connecting bars 5 for fixing, and insulating pads 9 are set between the two bars of the connecting bar 5, so that the two adjacent connecting bars 5 and the two bars of the connecting bar 5 will not attract each other due to excessive electrodynamic force, and the overall height space of the power distribution combiner cabinet is compressed to the maximum extent.

[0058] In one possible implementation, an elastic liner (not shown) is provided on the side of the clamping plate 61 that contacts any one of the connecting bar 5, the first terminal block 3, and the second terminal block 4. That is, the elastic liner is disposed on the inner surface of the slot, and the elastic liner is located between any one of the connecting bar 5, the first terminal block 3, and the second terminal block 4 and the inner surface of the slot. The elastic liner is made of a flexible material, such as a rubber pad or a silicone pad. The two clamping plates 61 are clamped and fixed between any one of the connecting bar 5, the first terminal block 3, and the second terminal block 4 by fasteners, providing continuous pressure. The flexible material of the elastic liner can absorb mechanical vibration energy, effectively preventing loosening caused by vibration and thermal expansion and contraction.

[0059] Along the height direction of the cabinet 1, both the first terminal block 3 and the second terminal block 4 are offset from the frame switch 2, meaning they are not at the same height as the frame switch 2. This helps reduce the depth dimension of the cabinet 1. Each connecting bar 5 is located on one side of the frame switch 2 along the depth direction of the cabinet 1. Each connecting bar 5 is close to the frame switch 2 and located inside the depth direction of the cabinet 1. The first terminal block 3 and the second terminal block 4 are located outside the depth direction of the cabinet 1, so that the connecting bar 5 is offset from the first terminal block 3 and the second terminal block 4 in the depth direction of the cabinet 1, further reducing the depth dimension of the cabinet 1.

[0060] In one possible implementation, such as Figure 6As shown, the frame switch 2 is connected to an adapter terminal 7, which has a connecting plate 71 perpendicular to the horizontal plane. The connecting strip 5 is fitted to the connecting plate 71. In the prior art, the connecting plate 71 is horizontal, which is inconvenient for wiring and results in a larger dimension of the cabinet 1 along the depth direction. In this application, the connecting plate 71 of the power distribution combiner cabinet is perpendicular to the horizontal plane, and the connecting strip 5 is fitted to the connecting plate 71. This facilitates the layout of the connecting strip 5, makes wiring convenient, and the connecting strip 5 occupies less space along the depth direction of the cabinet 1, effectively reducing the volume of the cabinet 1 and improving the space utilization rate of the power distribution combiner cabinet.

[0061] The energy storage system using the distribution combiner cabinet of this application has a daytime discharge mode and a nighttime charging mode. In the daytime discharge mode, the electrical energy stored in the battery pack of the energy storage system is converted from direct current (DC) to alternating current (AC) by the PCS device. The current is then input through the first terminal block 3, output through the second terminal block 4 to the transformer on the power grid, and finally output back to the grid, realizing the process of the energy storage system supplying power to the grid. This supplements the grid's power resources and effectively alleviates power supply pressure during peak electricity consumption periods. In the nighttime charging mode, the transformer on the grid obtains electrical energy from the grid, inputs it through the second terminal block 4, and outputs it through the first terminal block 3 to the PCS device. The PCS device converts the input AC to DC and then charges the batteries in the energy storage system, realizing the transfer of electrical energy from the grid to the energy storage system. Utilizing the relatively lower electricity prices at night for energy storage achieves peak shaving and valley filling, reducing electricity costs. Ultimately, bidirectional energy transfer between the energy storage system and the grid is realized.

[0062] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A power distribution combiner cabinet, characterized in that, include: The cabinet is a hollow frame structure and has a junction chamber; A frame switch, wherein the frame switch is disposed in the junction room; Multiple first terminal blocks are provided, each of which is located in the junction room and connected to the frame switch. Each first terminal block is arranged at intervals along the width direction of the cabinet and extends along the depth direction of the cabinet. The plane in which the first terminal block is located is perpendicular to the horizontal plane. Multiple second terminal blocks are provided, each of which is located in the junction room and connected to the frame switch. The second terminal blocks are arranged at intervals along the width of the cabinet and extend along the depth of the cabinet. The plane in which the second terminal blocks are located is perpendicular to the horizontal plane.

2. The power distribution combiner cabinet according to claim 1, characterized in that, Includes multiple copper busbar fixing components; Each of the second terminal blocks and each of the first terminal blocks are respectively connected to the frame switch via a connecting block; Each of the copper busbar fixing components is connected to the cabinet body; Each of the copper busbar fixing components clamps and fixes any one or more of the connecting busbar, the first terminal block, and the second terminal block.

3. The power distribution combiner cabinet according to claim 2, characterized in that, The copper busbar fixing assembly includes two clamping plates; Each of the copper busbar fixing components has two clamps respectively disposed on both sides of any one of the connecting busbar, the first terminal block and the second terminal block, one clamp is connected to the cabinet, and the two clamps are connected to clamp any one of the connecting busbar, the first terminal block and the second terminal block.

4. The power distribution combiner cabinet according to claim 3, characterized in that, The clamping plate is provided with multiple clamping parts, and each clamping part is arranged sequentially along the length direction of the clamping plate; Each of the aforementioned clamping parts has a slot; The connecting bar, the first terminal bar, and the second terminal bar are each inserted into the slots of the corresponding clamping parts on the two clamping plates along both sides of the width direction.

5. The power distribution combiner cabinet according to claim 4, characterized in that, The clamping part includes two motherboards spaced apart and a partition plate located between the two motherboards; The partition forms the slots between the two motherboards respectively; The connecting bar, the first terminal bar, and the second terminal bar each have two bar bodies, and the two bar bodies are respectively inserted into the two slots of the corresponding clamping part.

6. The power distribution combiner cabinet according to claim 3, characterized in that, The copper busbar fixing assembly includes fasteners; The fasteners are respectively engaged with the two clamping plates to limit and fix any one of the connecting bar, the first terminal bar and the second terminal bar.

7. The power distribution combiner cabinet according to claim 6, characterized in that, The fastener includes a screw rod that passes through the two clamping plates, a limiting body is provided at one end of the screw rod, and a nut is threaded onto the screw rod; The nut and the limiting body are respectively positioned on the two clamps.

8. The power distribution combiner cabinet according to claim 3, characterized in that, An elastic liner is provided on one side of the clamp that contacts any one of the connecting bar, the first terminal bar, and the second terminal bar.

9. The power distribution combiner cabinet according to claim 2, characterized in that, Along the height of the cabinet, both the first terminal block and the second terminal block are offset from the frame switch; Each of the aforementioned connection bars is located on one side of the frame switch along the depth direction of the cabinet.

10. The power distribution combiner cabinet according to claim 2, characterized in that, The frame switch is connected to an adapter terminal; The adapter terminal has a connecting plate, which is perpendicular to the horizontal plane; The connecting strip is attached to the connecting plate.

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