Cabinet connection assembly and cabinet structure

Abstract

The application relates to the technical field of electrical equipment, and discloses a parallel-cabinet connecting assembly and a parallel-cabinet structure. The parallel-cabinet connecting assembly comprises a first connecting piece and a second connecting piece. The first connecting piece comprises a first main body part provided with a first channel and a first connecting part protruding on the first main body part, the first main body part is sleeved with a sealing piece, and the first connecting part is used for connecting with a first cabinet body. The second connecting piece comprises a second main body part provided with a second channel and a second connecting part protruding on the second main body part, the second main body part is sleeved on the first main body part, the sealing piece is filled between the second main body part and the first main body part, and the second connecting part is used for connecting with a second cabinet body. The parallel-cabinet connecting assembly and the parallel-cabinet structure provided by the application are beneficial to avoiding the influence on the sealing performance of the parallel-cabinet connecting assembly after assembly.

Description

Technical Field

[0001] This application relates to the field of electrical equipment technology, and in particular to a cabinet connection component and cabinet structure. Background Technology

[0002] A power conversion system (PCS) controls the charging and discharging process of an energy storage system, converting AC to DC power. PCS are typically housed in a cabinet, which provides protection. Multiple PCS cabinets are usually used in practice, and they can be connected through a single channel. When multiple cabinets are connected in parallel, a channel must be created between them to allow cables and other electrical connections to pass through.

[0003] Parallel cabinet connection components serve as connectors between multiple cabinets, protecting cables and providing dust and water protection to ensure the airtightness of the passageway. The assembly of these components can affect sealing performance. Therefore, designing the assembly method of these components to avoid compromising sealing performance is a crucial issue. Utility Model Content

[0004] The purpose of this application is to provide a cabinet connection component and cabinet structure that helps to avoid affecting the sealing performance of the cabinet connection component after assembly.

[0005] To address the aforementioned technical problems, embodiments of this application provide a cabinet connection assembly for connecting adjacent first cabinets and second cabinets. The cabinet connection assembly includes a first connector and a second connector. The first connector includes a first main body portion having a first channel and a first connecting portion protruding from the first main body portion. A sealing member is fitted onto the first main body portion, and the first connecting portion is used to connect to the first cabinet. The second connector includes a second main body portion having a second channel and a second connecting portion protruding from the second main body portion. The second main body portion is fitted onto the first main body portion, and the sealing member fills the space between the second main body portion and the first main body portion. The second connecting portion is used to connect to the second cabinet.

[0006] An embodiment of this application also provides a cabinet merging structure, which includes a first cabinet and a second cabinet spaced apart, and the aforementioned cabinet merging connection assembly. A first connector of the cabinet merging connection assembly is connected to the first cabinet, and a second connector of the cabinet merging connection assembly is connected to the second cabinet. One end of a first channel of the first connector communicates with the interior of the first cabinet, and one end of a second channel of the second connector communicates with the interior of the second cabinet.

[0007] The parallel cabinet connection assembly and structure provided in this application use a first connector and a second connector to connect to adjacent cabinets. Both the first and second connectors include portions for fastening to the cabinets. Simultaneously, the first and second connectors form a channel through the cooperation of their main bodies, allowing electrical connectors such as cables to pass through. Even without a rigid connection using fasteners, the channel is sealed by a seal between the first and second main bodies of the first and second connectors. This accommodates installation tolerances between cabinets and avoids the impact of rigid connections on the sealing performance of the assembled parallel cabinet connection assembly.

[0008] In some embodiments, the first connecting portion is disposed around the first main body portion, and the first connecting portion is located at one end of the first main body portion.

[0009] In some embodiments, the second connecting portion is disposed around the second main body portion, and the second connecting portion is located at one end of the second main body portion.

[0010] In some embodiments, the cabinet connection assembly further includes a plurality of first fasteners and a plurality of second fasteners. The first connecting portion is provided with a plurality of first through holes around the first main body portion, and the second connecting portion is provided with a plurality of second through holes around the first main body portion. The first fasteners pass through the first through holes and are connected to the first cabinet, and the second fasteners pass through the second through holes and are connected to the second cabinet.

[0011] In some embodiments, at least one of the first via and the second via is an oblong hole.

[0012] In some embodiments, the first main body is provided with a plurality of positioning parts, at least a portion of which is located within the first channel, and the positioning parts are provided with through holes through which the power supply connector passes.

[0013] In some embodiments, a portion of the positioning part protrudes from the end where the first main body part is connected to the first connecting part.

[0014] In some embodiments, a sealing ring is provided on the side of the first connecting part and the second connecting part that are close to each other, the side of the first connecting part that is close to the second connecting part is connected to the first cabinet, and the side of the second connecting part that is close to the first connecting part is connected to the second cabinet.

[0015] In some embodiments, a first groove is provided on the side of the first connecting portion near the second connecting portion, and the first groove surrounds the first main body portion; a second groove is provided on the side of the second connecting portion near the first connecting portion, and the second groove surrounds the second main body portion. Attached Figure Description

[0016] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the cabinet connection assembly provided in some embodiments of this application; Figure 2 This is a schematic diagram of the structure of the first connector in the cabinet connection assembly provided in some embodiments of this application; Figure 3 This is a schematic diagram of the structure of the second connector in the cabinet connection assembly provided in some embodiments of this application; Figure 4 This is a schematic diagram of the cabinet structure provided in some embodiments of this application; Figure 5 This is a schematic diagram of the first cabinet in the cabinet-in-cabinet structure provided in some embodiments of this application; Figure 6 yes Figure 5 Enlarged diagram of point A in the middle. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the various embodiments of this application will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been presented in the various embodiments of this application to enable readers to better understand this application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical solutions claimed in this application can be implemented. The division of the various embodiments below is for the convenience of description and should not constitute any limitation on the specific implementation of this application. The various embodiments can be combined with and referenced by each other without contradiction.

[0019] 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 pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0020] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0021] When energy storage converter cabinets are used, multiple PCS cabinets are connected in parallel. Typically, a channel is created between the multiple PCS cabinets to allow cables and other electrical connections to pass through. This channel can be formed by connecting the channel holes on the side panels of the multiple PCS cabinets. Between two adjacent channel holes, a parallel cabinet connection assembly is usually used for connection. After assembly, the parallel cabinet connection assembly must ensure that the connected channel has dustproof and waterproof functions, that is, ensure the channel's airtightness.

[0022] Currently, the parallel cabinet connection components use sheet metal parts to form channels, and all components are rigidly connected to each other and to the cabinet side walls with bolts. After the parallel cabinets are assembled, the assembly tolerances between the cabinets cannot be accommodated, making assembly difficult and requiring extremely high precision. Forced installation can easily lead to stress concentration, and the risk of seal failure is extremely high due to transportation vibration and long-term power frequency vibration. This can easily cause water to enter the cabinet and short-circuit the copper busbars, causing a machine failure. In addition, the parallel cabinet connection components are installed on the outer wall of the cabinet, requiring sufficient installation, operation, and maintenance space. A single person needs at least 500mm of space, resulting in increased product size, power density loss, and higher costs.

[0023] To avoid affecting the sealing performance of the parallel cabinet connection assembly after assembly, some embodiments of this application provide a parallel cabinet connection assembly that forms a channel through the interlocking of two components. This achieves sealing while absorbing assembly tolerances, avoiding seal failure caused by the use of a rigid connection installation method that leads to stress concentration. This assembly effectively meets the parallel cabinet connection needs of applications requiring high precision assembly of large modular equipment, limited maintenance space, and high sealing reliability.

[0024] In addition, the parallel connection components can adopt an embedded structure to achieve low parallel spacing and high power density, thereby improving cost advantages.

[0025] In practice, the different components of the parallel cabinet connection assembly connect to different cabinets. These can be categorized into left and right cabinet seals. The left cabinet seal is installed in the left-side energy storage converter cabinet and is secured to the cabinet using O-rings and bolts. The right cabinet seal is installed in the right-side energy storage converter cabinet and is also secured to the cabinet using O-rings and bolts. Furthermore, the right cabinet seal is also fitted onto the left cabinet seal, and they can be sealed together using toothed waterproof rings, thus creating a sealed channel. This non-rigid connection method without fasteners solves the parallel cabinet installation tolerance problem. In addition, different components can be embedded into the left and right cabinets respectively, achieving low parallel cabinet spacing and high power density, thus reducing costs.

[0026] The following is combined with Figures 1 to 3 The structure of the cabinet connection component provided in some embodiments of this application is described. The cabinet connection component is used to connect adjacent first cabinets and second cabinets. Figures 4 to 6 The diagram shows the combined cabinet structure after the first cabinet and the second cabinet are connected by a combined cabinet connection component.

[0027] like Figures 1 to 3 As shown, some embodiments of this application provide a cabinet connection assembly including a first connector 11 and a second connector 12. The first connector 11 includes a first main body portion 111 having a first channel 1101, and a first connecting portion 112 protruding from the first main body portion 111. The first main body portion 111 is fitted with a sealing member 101, and the first connecting portion 112 is used to connect with the first cabinet 21 ( Figure 4 and Figure 5 (As shown) The second connector 12 includes a second main body 121 having a second channel 1201, and a second connecting portion 122 protruding from the second main body 121. The second main body 121 is fitted onto the first main body 111, and a sealing member 101 is filled between the second main body 121 and the first main body 111. The second connecting portion 122 is used to connect with the second cabinet 22 (as shown). Figure 4 and Figure 5 (As shown) connection.

[0028] The first connector 11 and the second connector 12 are the parts in the parallel cabinet connection assembly that connect to different cabinets. Both the first connector 11 and the second connector 12 include a connecting portion, i.e., a connecting part, which may have through holes for fasteners such as screws to be connected and fixed to openings on the side wall of the cabinet. The connecting portion can also be connected to the cabinet by adhesive bonding, welding, or snap-fit. The first connector 11 and the second connector 12 also include a main body portion, which is used to cooperate to form a series connection channel. The first main body portion 111 of the first connector 11 and the second main body portion 121 of the second connector 12 both form channels to allow electrical connectors such as cables to pass through, realizing electrical connection between two adjacent energy storage converter cabinets. In practice, the first main body portion 111 and the first connecting portion 112 can be integrally formed, and the second main body portion 121 and the second connecting portion 122 can be integrally formed.

[0029] Furthermore, the second main body portion 121 of the second connector 12 can be fitted onto the first main body portion 111 of the first connector 11, and a sealing member 101 can be provided at the mating position so that the channel can be sealed by the sealing member 101 when the first connector 11 and the second connector 12 are not connected by fasteners.

[0030] The cabinet connection assembly provided in some embodiments of this application uses a first connector 11 and a second connector 12 to connect to adjacent cabinets. Both the first connector 11 and the second connector 12 include portions for fastening to the cabinets. Simultaneously, the first connector 11 and the second connector 12 also form a channel through the cooperation of their main bodies, allowing electrical connectors such as cables to pass through. Even without a rigid connection using fasteners, the channel is sealed by a sealing member 101 between the first main body portion 111 of the first connector 11 and the second main body portion 121 of the second connector 12. This allows for adjustments to installation tolerances between cabinets and avoids compromising the sealing performance of the assembled cabinet connection assembly due to rigid connections.

[0031] In some embodiments, the first connecting portion 112 may be disposed around the first main body portion 111, and the first connecting portion 112 is located at one end of the first main body portion 111.

[0032] In other words, the first connecting part 112 can be arranged in a ring shape, surrounding the outer ring of the first main body 111. By arranging the first connecting part 112 around the first main body 111, sufficient contact area can be formed between the first connecting part 112 and the first cabinet 21, thereby ensuring the tightness of the connection between the first connecting part 112 and the first cabinet 21 and improving the connection strength between the first connector 11 and the first cabinet 21.

[0033] Furthermore, the first connecting portion 112 is located at one end of the first main body portion 111, that is, near the end face of the first main body portion 111, adjacent to the opening of the first channel 1101. When the first connecting portion 112 is connected to the first cabinet 21, it facilitates positioning. At the same time, it ensures that when the first main body portion 111 of the first connector 11 mates with the second main body portion 121 of the second connector 12, a sufficient mating length is formed, thus ensuring the mating effect between the first connector 11 and the second connector 12.

[0034] In practice, multiple sealing rings can be provided between the first main body 111 and the second main body 121, or a labyrinth-type sealing structure can be formed to ensure the sealing effect of the channel.

[0035] In some embodiments, the second connecting portion 122 may be disposed around the second main body portion 121, and the second connecting portion 122 is located at one end of the second main body portion 121.

[0036] In other words, the second connecting part 122 can be configured in a ring shape, surrounding the outer ring of the second main body 121. By configuring the second connecting part 122 around the second main body 121, sufficient contact area can be formed between the second connecting part 122 and the second cabinet 22, thereby ensuring the tightness of the connection between the second connecting part 122 and the second cabinet 22 and improving the connection strength between the second connecting part 12 and the second cabinet 22.

[0037] Furthermore, the second connecting portion 122 is located at one end of the second main body portion 121, that is, near the end face of the second main body portion 121, adjacent to the opening of the second channel 1201. When the second connecting portion 122 is connected to the second cabinet 22, it facilitates positioning. At the same time, it ensures that when the second main body portion 121 of the second connector 12 mates with the first main body portion 111 of the first connector 11, a sufficient mating length is formed, thus ensuring the mating effect between the second connector 12 and the first connector 11.

[0038] In some embodiments, the cabinet connection assembly further includes a plurality of first fasteners and a plurality of second fasteners. A first connecting portion 112 is provided with a plurality of first through holes 1121 around a first main body portion 111, and a second connecting portion 122 is provided with a plurality of second through holes 1221 around a first main body portion 111. The first fasteners pass through the first through holes 1121 to connect to the first cabinet 21, and the second fasteners pass through the second through holes 1221 to connect to the second cabinet 22.

[0039] In other words, the different connectors of the cabinet connection assembly can be connected and fixed to the corresponding cabinets using fasteners. Through holes on the first connecting part 112 and the second connecting part 122 provide space for the fasteners to pass through. These through holes can surround the main body, providing multiple connection points for the fasteners. The first connector 11 is connected to the first cabinet via a first fastener passing through the first through hole 1121 on the first connecting part 112, and the second connector 12 is connected to the second cabinet via a second fastener passing through the second through hole 1221 on the second connecting part 122.

[0040] In some embodiments, at least one of the first via 1121 and the second via 1221 can be an oblong hole, that is, the first via 1121 or the second via 1221 can be configured as an oblong hole, or both the first via 1121 and the second via 1221 can be configured as oblong holes. In practice, the first via 1121 or the second via 1221 can also be configured as a circular hole.

[0041] Because the oblong hole is shaped like a racetrack, it can provide a certain amount of sliding adjustment space for the fastener. By making at least one of the first through hole 1121 and the second through hole 1221 an oblong hole, the assembly position of the connector can be appropriately adjusted during the actual assembly process to ensure the fit between the first connector 11 and the second connector 12, ensure the docking accuracy, and thus better adapt to the assembly tolerance of the cabinet.

[0042] In some embodiments, the first main body 111 is provided with a plurality of positioning portions 1102, at least a portion of which is located within the first channel 1101, and the positioning portion 1102 is provided with a through hole 1103 through which a power supply connector passes.

[0043] like Figure 2 As shown, the first channel 1101 is provided with multiple hollow positioning parts 1102, through which copper busbars 21 can pass. Different positioning parts 1102 can cooperate with different copper busbars. The positioning parts 1102 can position the copper busbars 21 and other electrical connectors, effectively limiting the position of the passing electrical connectors and ensuring the stability of the copper busbars 21 and other electrical connectors. In practice, multiple through holes 1103, such as two or three, can be provided in the positioning parts 1102 to allow a larger number of electrical connectors to pass through.

[0044] In some embodiments, a portion of the positioning portion 1102 protrudes from the end where the first main body portion 111 is connected to the first connecting portion 112.

[0045] In other words, the positioning part 1102 protrudes from the side of the first main body 111 near the first connecting part 112, extending beyond the end face of the first main body 111. By making part of the positioning part 1102 protrude from the end where the first main body 111 connects to the first connecting part 112, it can play a certain positioning and guiding role when the electrical connector passes through.

[0046] In some embodiments, a sealing ring may be provided on the side of the first connecting part 112 and the second connecting part 122 that are close to each other. The side of the first connecting part 112 that is close to the second connecting part 122 is connected to the first cabinet 21, and the side of the second connecting part 122 that is close to the first connecting part 112 is connected to the second cabinet 22.

[0047] The surfaces of the first connecting part 112 and the second connecting part 122 that are close to each other are surfaces that mate with the cabinet. By providing a sealing ring on the side of the first connecting part 112 and the second connecting part 122 that are close to each other, a sealing effect can be ensured when the connector is connected to the cabinet. Simultaneously, the mating of the side of the first connecting part 112 and the second connecting part 122 with the cabinet allows the first connecting part 112 and the second connecting part 122 to be embedded inside the cabinet. That is, when the first connector 11 is connected to the first cabinet 21, the first connecting part 112 is located inside the first cabinet 21; when the second connector 12 is connected to the second cabinet 22, the second connecting part 122 is located inside the second cabinet 22. By embedding the first connecting part 112 and the second connecting part 122 inside the cabinet, the space occupied when connecting cabinets side-by-side can be reduced, and the distance between cabinets can be decreased.

[0048] In practice, the first connecting part 112 and the second connecting part 122 can also be connected to different cabinets on opposite sides, that is, different connectors are installed on the outside of the cabinet, and the connecting parts mate with the outer wall surface of the cabinet. For example... Figure 5 and Figure 6 As shown, the first connector 11 and the second connector 12 can be connected to each other to form a channel isolated from the outside. The first connector 11 is installed on the outer wall of the first cabinet 21, and correspondingly, the second connector 12 is installed on the outer wall of the second cabinet 22, which can also realize the connection of different cabinets.

[0049] In some embodiments, the first connecting portion 112 may have a first groove 113 on the side near the second connecting portion 122, and the first groove 113 surrounds the first main body portion 111; the second connecting portion 122 may have a second groove 123 on the side near the first connecting portion 112, and the second groove 123 surrounds the second main body portion 121.

[0050] The grooves provided on the sides of the first connecting part 112 and the second connecting part 122 that are close to each other can form a clearance area. In actual situations, when the connecting parts of different connectors are connected to the cabinet, a tight fit can be ensured.

[0051] The outer contours of the first connector 11 and the second connector 12 can be kept consistent, such as... Figures 1 to 3 As shown, the cross-sectional shape of the first connector 11 and the second connector 12 can be rectangular. At the same time, the length of the first main body portion 111 of the first connector 11 is greater than the length of the second main body portion 121 of the second connector 12.

[0052] like Figure 4 and Figure 5 As shown, some embodiments of this application also provide a cabinet merging structure. The cabinet merging structure includes a first cabinet 21 and a second cabinet 22 spaced apart, and the aforementioned cabinet merging connection assembly. The first connector 11 of the cabinet merging connection assembly is connected to the first cabinet 21, and the second connector 12 of the cabinet merging connection assembly is connected to the second cabinet 22. One end of the first channel 1101 of the first connector 11 communicates with the interior of the first cabinet 21, and one end of the second channel 1201 of the second connector 12 communicates with the interior of the second cabinet 22.

[0053] By using plug-in matching rack-mount connectors for rack consolidation, sealing can be achieved while absorbing assembly tolerances, avoiding seal failure caused by rigid connection installations prone to stress concentration. Furthermore, the rack-mount connectors can be embedded, enabling low rack spacing and high power density, thus improving cost advantages.

[0054] In practice, an AC three-phase conductive soft copper busbar can be installed inside the insulating body of the first connector 11. The output current of the energy storage converter in the left cabinet is conducted to the left end of the first connector 11, and the right end of the first connector 11 is connected to the energy storage converter in the right cabinet. The current can be doubled and connected to the sealed terminal connected to the transformer or other equipment through the conductive copper busbar.

[0055] For large modular equipment, the equipment itself has large dimensional tolerances, and the assembly is carried out by hoisting or forklifts, resulting in low assembly accuracy. Under mass production, it is difficult to guarantee a stable range of the distance between the two cabinets. The above-mentioned cabinet connection component, which serves as a sealing terminal, adopts an inner and outer sleeve assembly for sealing. Furthermore, the internal connection can use a soft copper busbar, which can achieve a tolerance of no less than 30mm in the direction of the distance between the two cabinets. The assembly in other directions can be absorbed by using large-hole matching large-waist bolts, which solves the problems of small installation tolerance and difficult maintenance of the cabinet connection components using a hard connection form.

[0056] Those skilled in the art will understand that the above embodiments are specific implementations of this application, and in practical applications, various changes can be made in form and detail without departing from the spirit and scope of this application.

Claims

1. A cabinet connection assembly for connecting adjacent first cabinets and second cabinets, characterized in that, include: The first connector includes a first main body portion having a first channel and a first connecting portion protruding from the first main body portion. The first main body portion is fitted with a sealing element, and the first connecting portion is used to connect with the first cabinet. The second connector includes a second main body portion having a second channel and a second connecting portion protruding from the second main body portion. The second main body portion is fitted onto the first main body portion, and the seal is filled between the second main body portion and the first main body portion. The second connecting portion is used to connect to the second cabinet.

2. The cabinet connection assembly according to claim 1, characterized in that, The first connecting portion is disposed around the first main body portion, and the first connecting portion is located at one end of the first main body portion.

3. The cabinet connection assembly according to claim 1, characterized in that, The second connecting portion is disposed around the second main body portion, and the second connecting portion is located at one end of the second main body portion.

4. The cabinet connection assembly according to claim 1, characterized in that, It also includes a plurality of first fasteners and a plurality of second fasteners. The first connecting portion is provided with a plurality of first through holes around the first main body portion, and the second connecting portion is provided with a plurality of second through holes around the first main body portion. The first fasteners pass through the first through holes and are connected to the first cabinet, and the second fasteners pass through the second through holes and are connected to the second cabinet.

5. The cabinet connection assembly according to claim 4, characterized in that, At least one of the first via and the second via is an oblong via.

6. The cabinet connection assembly according to claim 1, characterized in that, The first main body is provided with a plurality of positioning parts, at least a portion of which is located within the first channel, and each positioning part is provided with a through hole through which a power supply connector passes.

7. The cabinet connection assembly according to claim 6, characterized in that, The positioning part protrudes from the end where the first main body part is connected to the first connecting part.

8. The cabinet connection assembly according to claim 1, characterized in that, A sealing ring is provided on the side of the first connecting part and the second connecting part that are close to each other. The side of the first connecting part that is close to the second connecting part is connected to the first cabinet, and the side of the second connecting part that is close to the first connecting part is connected to the second cabinet.

9. The cabinet connection assembly according to claim 1, characterized in that, The first connecting portion has a first groove on the side near the second connecting portion, and the first groove surrounds the first main body portion; the second connecting portion has a second groove on the side near the first connecting portion, and the second groove surrounds the second main body portion.

10. A cabinet-style structure, characterized in that, include: The first cabinet and the second cabinet are spaced apart, and the cabinet connection assembly according to any one of claims 1 to 9, wherein the first connector of the cabinet connection assembly is connected to the first cabinet, the second connector of the cabinet connection assembly is connected to the second cabinet, one end of the first channel of the first connector is connected to the interior of the first cabinet, and one end of the second channel of the second connector is connected to the interior of the second cabinet.

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