Busbar group and electrical cabinet

Abstract

The utility model relates to a busbar group and an electrical cabinet, and relates to the technical field of energy storage system power distribution. The busbar group comprises a plurality of first connecting busbars which are arranged at intervals in a first direction, each first connecting busbar is provided with two connecting ends arranged in a second direction and a main body part located between the two connecting ends, the first direction is perpendicular to the second direction, and the two connecting ends are used for connecting electrical equipment; a plurality of second connection busbars, each of which extends along the first direction and is electrically connected between the main body parts of two adjacent first connection busbars; and in the second direction, two adjacent second connection busbars are arranged in a staggered manner. The busbar group can adapt to the space and configuration requirements of the electrical cabinet, the installation is simplified, and the expansion is convenient.

Description

Busbar assembly and electrical cabinet Technical Field

[0001] This application relates to the field of power distribution technology for energy storage systems, and in particular to a busbar assembly and electrical cabinet. Background Technology

[0002] With the rapid development of the energy storage industry, power distribution capacity and energy density are constantly increasing, leading to increasingly diversified demands for power distribution equipment. In electrical systems, busbar assemblies are key components connecting various electrical devices, and their design directly affects the stability and reliability of the electrical system. In related technologies, busbar assemblies have complex structures, inconvenient connections, and cannot adapt to the space and configuration requirements of electrical cabinets, making expansion and installation difficult. Therefore, this application aims to provide a busbar assembly and electrical cabinet to solve the problems existing in the prior art. Summary of the Invention

[0003] This application provides a busbar assembly that, by optimizing the connection method of the busbar assembly, can adapt to the space and configuration requirements of the electrical cabinet, simplifying installation and facilitating expansion. This application also provides an electrical cabinet including this busbar assembly.

[0004] To achieve the above objectives, according to a first aspect of this application, a busbar assembly is provided, comprising: a plurality of first connecting busbars spaced apart in a first direction, each first connecting busbar having two connecting ends disposed in a second direction and a main body portion located between the two connecting ends, wherein the first direction and the second direction are perpendicular to each other, and the two connecting ends are used to connect electrical equipment; a plurality of second connecting busbars extending along the first direction and electrically connecting the main bodies portions of two adjacent first connecting busbars; and in the second direction, two adjacent second connecting busbars are staggered.

[0005] In some embodiments, the first connecting busbar includes a first sub-connecting busbar, a second sub-connecting busbar, and a third sub-connecting busbar, which are spaced apart in a third direction, wherein the third direction is perpendicular to the first direction and the second direction.

[0006] In some embodiments, the first sub-connection row is disposed on the third-direction side of the second sub-connection row, and the third sub-connection row is disposed on the other side of the third-direction side of the second sub-connection row.

[0007] In some embodiments, the second connecting busbar includes a fourth sub-connecting busbar, a fifth sub-connecting busbar, and a sixth sub-connecting busbar. The fourth sub-connecting busbar is electrically connected to the main body portions of two adjacent first sub-connecting busbars, the fifth sub-connecting busbar is electrically connected to the main body portions of two adjacent second sub-connecting busbars, and the sixth sub-connecting busbar is electrically connected to the main body portions of two adjacent third sub-connecting busbars. The fifth sub-connecting busbar, the fourth sub-connecting busbar, and the sixth sub-connecting busbar are staggered relative to each other in the second direction.

[0008] In some embodiments, the second connecting busbar has a first connecting portion at both ends in the first direction, and a second connecting portion on the main body that cooperates with the first connecting portion.

[0009] In some embodiments, both the first connecting portion and the second connecting portion are through holes; the busbar assembly further includes: fasteners, which are inserted through the first connecting portion and the second connecting portion to fix the first connecting busbar and the second connecting busbar.

[0010] In some embodiments, the main body is provided with two second connecting portions spaced apart along a second direction.

[0011] In some embodiments, each first connecting busbar also has two branches spaced apart in a second direction. Each branch extends along a third direction, and one end of each branch is connected to the main body, while the other end is a connecting end. The third direction is perpendicular to both the first and second directions.

[0012] According to a second aspect of this application, an electrical cabinet is provided, including electrical equipment and a busbar group of any of the above embodiments; the electrical equipment includes circuit breaker groups arranged at intervals along a first direction; the busbar group is used to connect multiple circuit breaker groups.

[0013] In some embodiments, each circuit breaker group includes at least two circuit breakers spaced apart along a second direction; the two connection terminals of each first connecting busbar are electrically connected to two adjacent circuit breakers in the second direction.

[0014] The busbar assembly of this embodiment can adapt to the space and configuration requirements of electrical cabinets, simplify installation, facilitate expansion, and improve the versatility and flexibility of electrical cabinets. Furthermore, by using busbar connections, the mechanical strength and electrical reliability of the connections can be improved, reducing connection loosening or failure due to vibration or mechanical stress.

[0015] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0018] Figure 1 is a schematic diagram of the overall structure of the busbar assembly provided in an embodiment of this application;

[0019] Figure 2 is a schematic diagram of the structure of the first connecting busbar provided in an embodiment of this application;

[0020] Figure 3 is a schematic diagram of the structure of the second connecting busbar provided in an embodiment of this application;

[0021] Figure 4 is a structural schematic diagram of a single electrical cabinet from a first-view perspective provided in an embodiment of this application;

[0022] Figure 5 is a structural schematic diagram of a single electrical cabinet from a second perspective according to an embodiment of this application;

[0023] Figure 6 is a structural schematic diagram of two electrical cabinets arranged side by side according to an embodiment of this application, viewed from a first perspective.

[0024] Figure 7 is a structural schematic diagram of two electrical cabinets arranged side by side according to an embodiment of this application, viewed from a second perspective.

[0025] Explanation of reference numerals in the attached figures:

[0026] 10 motherboard groups;

[0027] 1. First connecting busbar; 11. First sub-connecting busbar; 12. Second sub-connecting busbar; 13. Third sub-connecting busbar;

[0028] 101 Main body; 14 Second connecting part; 102 Branch part; 1021 Connecting end;

[0029] 2. Second connecting busbar; 21. Fourth sub-connecting busbar; 22. Fifth sub-connecting busbar; 23. Sixth sub-connecting busbar;

[0030] 24 First connecting part;

[0031] 20 Circuit breaker group; 201 Circuit breaker; 202 Cabinet; 2021 Support plate; 203 Hinge;

[0032] 204 incoming line connector;

[0033] X is the first direction; Z is the second direction; Y is the third direction. Detailed Implementation

[0034] 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 them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0035] This application provides a busbar assembly 10, as shown in Figure 1. The busbar assembly 10 includes a plurality of first connecting busbars 1 and a plurality of second connecting busbars 2. The plurality of first connecting busbars 1 are spaced apart in a first direction X. Each first connecting busbar 1 has two connecting ends 1021 disposed in a second direction Z and a main body portion 101 located between the two connecting ends 1021. The two connecting ends 1021 may be opposite to each other. Each connecting end 1021 is used to connect electrical equipment, such as circuit breakers and relays. Each second connecting busbar 2 extends along the first direction X and is electrically connected between the main body portions 101 of two adjacent first connecting busbars 1. The first direction X and the second direction Z are perpendicular to each other.

[0036] As can be understood from Figures 1, 2, and 3, the two connecting ends 1021 of the first connecting busbar 1 are arranged opposite each other in the second direction Z, and the second connecting busbar 2 extends along the first direction X. This layout can effectively utilize space, especially in environments with limited space, such as outdoor pre-installation spaces. By using the second connecting busbar 2 between the main body 101 of adjacent first connecting busbars 1, the number of contact points of conventional bent busbars is reduced, and the stability and reliability of electrical connections can be ensured, reducing the risk of poor contact. Since the second connecting busbar 2 can extend in the first direction X, installers can more easily connect and disassemble, reducing installation and maintenance time and costs.

[0037] In the context, the first direction X is the lateral direction of the busbar group 10, the second direction Z is the vertical direction of the busbar group 10, and the third direction Y is the direction perpendicular to the first direction X and the second direction Z.

[0038] Referring to Figure 1, in the second direction Z, the two adjacent second connecting busbars 2 are staggered, allowing for more flexible design and installation options to adapt to the space and configuration requirements of the electrical cabinet. This flexibility simplifies the installation process and allows for easier system expansion and modification, improving the versatility and flexibility of the electrical cabinet.

[0039] Please refer to Figures 4 and 5. The multiple first connecting busbars 1 include a first sub-connecting busbar 11, a second sub-connecting busbar 12, and a third sub-connecting busbar 13. The three are spaced apart in the third direction Y to increase airflow between the connecting busbars, which helps to dissipate heat and prevent overheating.

[0040] Specifically, the first sub-connecting row 11 is located on the third-direction Y side of the second sub-connecting row 12, and the third sub-connecting row 13 is located on the other side of the second sub-connecting row 12 in the third-direction Y direction. It can be understood that the first sub-connecting row 11 is located to the left of the second sub-connecting row 12, and the third sub-connecting row 13 is located to the right of the second sub-connecting row 12, so that the three are spaced apart in the third-direction Y direction.

[0041] Referring to FIGS. 4 and 5, the plurality of second connecting busbars 2 include a fourth sub-connecting row 21, a fifth sub-connecting row 22, and a sixth sub-connecting row 23. The fourth sub-connecting row 21 is electrically connected between the main body portions 101 of two adjacent first sub-connecting rows 11, the fifth sub-connecting row 22 is electrically connected between the main body portions 101 of two adjacent second sub-connecting rows 12, and the sixth sub-connecting row 23 is electrically connected between the main body portions 101 of two adjacent third sub-connecting rows 13. Among them, the fifth sub-connecting row 22 is arranged offset from the fourth sub-connecting row 21 and the sixth sub-connecting row 23 in the second direction Z to ensure the installation spacing between two adjacent second connecting busbars 2 in the second direction Z and avoid interference during the installation process.

[0042] In some embodiments, referring to FIGS. 4 and 5, the fifth sub-connecting row 22 is arranged offset from the fourth sub-connecting row 21 and the sixth sub-connecting row 23 in the second direction Z, and the fourth sub-connecting row 21 is also arranged offset from the sixth sub-connecting row 23 in the second direction Z, ensuring a reasonable installation spacing between two adjacent second connecting busbars 2 in the second direction Z, preventing interference phenomena, and facilitating the orderly installation and stable layout of the entire busbar group 10.

[0043] Referring to FIGS. 2 and 3, first connecting portions 24 are provided at both ends of the second connecting busbar 2 in the first direction X, and second connecting portions 14 that cooperate with the first connecting portions 24 are provided on the main body portion 101. At least two second connecting portions 14 are provided on the main body portion 101 and are spaced apart in the second direction Z. For example, FIG. 2 shows two second connecting portions 14 spaced apart in the second direction Z so that two adjacent second connecting busbars 2 are arranged offset from each other in the second direction Z.

[0044] Referring to FIGS. 2 and 3, both the first connecting portion 24 and the second connecting portion 14 are through holes, and the number of through holes is multiple to increase the strength of the connection structure. First connecting portions 24 are provided at both ends of the second connecting busbar 2 in the first direction X, and second connecting portions 14 that cooperate with the first connecting portions 24 are provided on the main body portion 101. By passing fasteners (such as bolts and nuts) through the first connecting portion 24 and the second connecting portion 14, the first connecting busbar 1 and the second connecting busbar 2 are fixed. This connection and fixing method is simple and reliable, can ensure the stability of the connection between各个部件, and thus maintain the integrity of the entire busbar group 10.

[0045] Referring to FIG. 2, each first connecting busbar 1 further has two branch portions 102 spaced apart in the second direction Z. Each branch portion 102 extends along the third direction Y, and one end of each branch portion 102 is connected to the main body portion 101, and the other end is a connection end 1021. It can be understood that the structure of each first connecting busbar 1 is a "C" - shaped structure.

[0046] The busbar assembly 10 has a simple structure and is easy to connect, reducing installation and maintenance costs. Furthermore, busbar connections are generally more reliable than cable connections, improving mechanical strength and electrical reliability, and reducing loosening or failure due to vibration or mechanical stress.

[0047] This application also provides an electrical cabinet, which can be a low-voltage cabinet or a high-voltage cabinet, without particular limitation. Referring to Figures 4 and 5, the electrical cabinet includes electrical equipment and a busbar group 10. The electrical equipment includes circuit breaker groups 20 spaced apart along a first direction X. The busbar group 10 is used to connect multiple circuit breaker groups 20, which simplifies the wiring process and reduces the use of cables. This not only reduces installation complexity but also reduces the possibility of wiring errors. Each circuit breaker group 20 includes at least two circuit breakers 201 spaced apart along a second direction Z; the two connection terminals 1021 of each first connecting busbar 1 are electrically connected to two adjacent circuit breakers 201 in the second direction Z.

[0048] Referring to Figures 4 and 5, the electrical cabinet also includes a cabinet body 202, which includes at least two support plates 2021. These support plates 2021 are spaced apart in the second direction Z, and each support plate 2021 is equipped with at least two circuit breakers 201. For example, Figures 4 and 5 illustrate two support plates 2021, each with two circuit breakers 201, spaced apart in both the second direction Z and the first direction X. The two circuit breakers 201 spaced apart in the second direction Z constitute a circuit breaker group 20, and are connected in the second direction Z via a first connecting busbar 1. This arrangement in the second direction Z effectively utilizes the vertical space of the cabinet body 202, saving horizontal space and making the overall distribution cabinet design more compact. Furthermore, directly connecting the circuit breakers 201 in the second direction Z via the first connecting busbar 1 reduces the use of cables, simplifies the wiring process, and lowers installation complexity.

[0049] Circuit breaker 201 has phase A connection terminal 1021, phase B connection terminal 1021, and phase C connection terminal 1021. The first sub-connection bar 11 connects the phase A connection terminals 1021 of the upper and lower circuit breakers 201, the second sub-connection bar 12 connects the phase B connection terminals 1021 of the upper and lower circuit breakers 201, and the third sub-connection bar 13 connects the phase C connection terminals 1021 of the upper and lower circuit breakers 201. Therefore, by connecting the connection terminals 1021 of the same phase (phase A, phase B, and phase C) respectively, phase consistency in the circuit is ensured. Furthermore, this connection method makes fault diagnosis easier because the connection path for each phase is clear, facilitating quick identification and problem resolution.

[0050] Each second connecting busbar 2 is electrically connected along the first direction X to the main body 101 of two adjacent first connecting busbars 1, thereby connecting two adjacent circuit breaker groups 20. This first-direction X-connection design facilitates the expansion and maintenance of the circuit breaker 201, making fault diagnosis, component replacement, and system upgrades easier. Specifically, the first sub-connecting busbar 11 of one circuit breaker group 20 is connected to the first sub-connecting busbar 11 of another adjacent circuit breaker group 20 via a fourth sub-connecting busbar 21. The second sub-connecting busbar 12 of one circuit breaker group 20 is connected to the second sub-connecting busbar 12 of another adjacent circuit breaker group 20 via a fifth sub-connecting busbar 22. The third sub-connecting busbar 13 of one circuit breaker group 20 is connected to the third sub-connecting busbar 13 of another adjacent circuit breaker group 20 via a sixth sub-connecting busbar 23. This connection method ensures phase consistency between adjacent circuit breaker groups 20 (phases A, B, and C are connected separately), thus maintaining the phase balance of the power system and facilitating system expansion and modular configuration.

[0051] Please refer to Figure 5. The distance between the first sub-connecting busbar 11 and the circuit breaker group 20 in the third direction Y is D1; ​​the distance between the second sub-connecting busbar 12 and the circuit breaker group 20 in the third direction Y is D2; and the distance between the third sub-connecting busbar 13 and the circuit breaker group 20 in the third direction Y is D3, where D1 > D2 > D3. This dimensional setting ensures that two adjacent first connecting busbars 1 (refer to Figure 2) have a suitable installation spacing in the third direction Y, effectively avoiding interference between them during installation and ensuring smooth installation. It can be understood that the above distances can be the maximum or minimum distance between a certain sub-connecting busbar and the circuit breaker group 20.

[0052] Please refer to Figures 6 and 7. When at least two electrical cabinets are arranged side by side, the two adjacent electrical cabinets are connected by hinges 203. The connection method of hinges 203 facilitates system expansion, and the number of cabinets 202 can be easily increased or decreased to adapt to future changes in needs.

[0053] Two adjacent electrical cabinets are connected by hinges 203, forming a unified structure that improves overall structural stability and reduces the risk of individual cabinets 202 moving or tilting due to external forces. Hinges 203 allow for a degree of angle adjustment, making installation more flexible and adaptable to site space constraints and layout requirements. Cabinets 202 connected by hinges 203 can be separated when needed, facilitating maintenance, repair, or replacement of individual cabinets 202 without affecting the normal operation of other cabinets 202.

[0054] Please refer to Figure 7. When at least two electrical cabinets are arranged side by side, the first connecting busbar 1 of the circuit breaker group 20 (the rightmost side of the left cabinet) of one cabinet 202 is connected to the first connecting busbar 1 of the circuit breaker group 20 (the leftmost side of the right cabinet) of the adjacent cabinet 202 through the second connecting busbar 2. This ensures the electrical continuity between adjacent cabinets 202, allowing current to be seamlessly transmitted between multiple cabinets 202, forming an integrated power distribution system.

[0055] The electrical cabinet also includes multiple incoming line connection bars 204, each of which is connected to a circuit breaker 201 for use in connecting to cables outside the cabinet 202.

[0056] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0057] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0058] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0059] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A busbar assembly, characterized in that, include: A plurality of first connecting busbars are spaced apart in a first direction, each first connecting busbar having two connecting ends in a second direction and a main body portion located between the two connecting ends, wherein the first direction and the second direction are perpendicular to each other, and the two connecting ends are used to connect electrical equipment; a plurality of second connecting busbars extend along the first direction and electrically connect the main bodies of two adjacent first connecting busbars; in the second direction, two adjacent second connecting busbars are staggered.

2. The busbar assembly according to claim 1, characterized in that, The first connecting busbar includes a first sub-connecting busbar, a second sub-connecting busbar, and a third sub-connecting busbar, which are spaced apart in a third direction, wherein the third direction is perpendicular to the first direction and the second direction.

3. The busbar assembly according to claim 2, characterized in that, The first sub-connecting row is disposed on one side of the second sub-connecting row in the third direction, and the third sub-connecting row is disposed on the other side of the second sub-connecting row in the third direction.

4. The busbar assembly according to claim 2 or 3, characterized in that, The second connecting busbar includes a fourth sub-connecting busbar, a fifth sub-connecting busbar, and a sixth sub-connecting busbar. The fourth sub-connecting busbar is electrically connected to the main body of two adjacent first sub-connecting busbars, the fifth sub-connecting busbar is electrically connected to the main body of two adjacent second sub-connecting busbars, and the sixth sub-connecting busbar is electrically connected to the main body of two adjacent third sub-connecting busbars. The fifth sub-connecting busbar, the fourth sub-connecting busbar, and the sixth sub-connecting busbar are staggered relative to each other in the second direction.

5. The busbar assembly according to claim 1 or 3, characterized in that, The second connecting busbar has a first connecting portion at both ends in the first direction, and the main body has a second connecting portion that cooperates with the first connecting portion.

6. The busbar assembly according to claim 5, characterized in that, Both the first connecting portion and the second connecting portion are through holes; the busbar assembly further includes: fasteners, which are inserted through the first connecting portion and the second connecting portion to fix the first connecting busbar and the second connecting busbar.

7. The busbar assembly according to claim 5, characterized in that, The main body is provided with two second connecting portions spaced apart along the second direction.

8. The busbar assembly according to claim 1 or 3, characterized in that, Each of the first connecting busbars also has two branches spaced apart in the second direction. Each branch extends along a third direction, and one end of each branch is connected to the main body, while the other end is the connecting end. The third direction is perpendicular to both the first direction and the second direction.

9. An electrical cabinet, characterized in that, The device includes electrical equipment and a busbar assembly as described in any one of claims 1 to 8; the electrical equipment includes circuit breaker groups spaced apart along the first direction; and the busbar assembly is used to connect a plurality of the circuit breaker groups.

10. The electrical cabinet according to claim 9, characterized in that, Each of the circuit breaker groups includes at least two circuit breakers spaced apart along the second direction; the two connection terminals of each of the first connecting busbars are respectively electrically connected to two adjacent circuit breakers in the second direction.

Images