Power distribution cabinet

Abstract

A power distribution cabinet (10) includes a first bus bar (12), a second bus bar (14), and a fastening element (16). The first bus bar (12) includes a first conductor pair. Two first conductors (18) of the first conductor pair are arranged side by side in a second direction (S) orthogonal to the first direction (F), and a first gap (20) is defined between the two first conductors (18). The second bus bar (14) includes a second conductor pair. Two second conductors (22) of the second conductor pair are arranged side by side in a third direction (T) orthogonal to both the first direction (F) and the second direction (S), and a second gap (24) is defined between the two second conductors (22). The first conductor pair is disposed in the second gap (24), and the second conductor (22) is provided with a mounting hole (26). A fastening element (16) passes through the first gap (20) and the mounting hole (26) such that the second conductor pair grips the first conductor pair.

Description

Technical Field

[0001] This disclosure belongs to the field of power distribution technology, and specifically relates to a power distribution cabinet. Background Technology

[0002] A distribution cabinet is a device that distributes electrical energy from a circuit of a higher-level power distribution system to other loads, providing protection, monitoring, and control for those loads. Distribution cabinets typically consist of horizontal busbars (or main busbars) and vertical busbars (or distribution busbars, branch busbars). Horizontal busbars are used to introduce electrical energy from the outside into the distribution cabinet, while vertical busbars are used to distribute electrical energy from the horizontal busbars to functional units (e.g., circuit breakers, current transformers, etc.).

[0003] In existing technology, horizontal and vertical busbars are connected by fasteners. By providing through-holes in the horizontal and vertical busbars, the fasteners can pass through them, thus electrically connecting the vertical busbars to the horizontal busbars. However, because the through-holes in the horizontal and vertical busbars need to be aligned with each other, the positions of the horizontal and vertical busbars are predetermined and cannot be flexibly adjusted. Furthermore, when the through-holes in the horizontal and vertical busbars are used in pairs, when the type or specifications of the functional unit change, both the horizontal and vertical busbars may need to be replaced to accommodate the new functional unit. These problems result in a poor user experience and high operating costs for the distribution cabinet. Utility Model Content

[0004] To address the aforementioned technical problems, this disclosure provides a power distribution cabinet, comprising: a first busbar, the first busbar including a plurality of first conductors connected in parallel to each other, the first conductors extending in a first direction, the plurality of first conductors including a pair of first conductors, two of the first conductors in the pair being arranged side-by-side in a second direction orthogonal to both the first and second directions, and defining a first gap between the two first conductors; a second busbar, the second busbar including a plurality of second conductors connected in parallel to each other, the second conductors extending in the second direction, the plurality of second conductors including a pair of second conductors, two of the second conductors in the pair being arranged side-by-side in a third direction orthogonal to both the first and second directions, and defining a second gap between the two second conductors, the first conductor pair being disposed in the second gap, each of the second conductors in the pair being provided with a mounting hole aligned with the first gap; and a fastening element passing through the first gap and the mounting hole to clamp the first conductor pair with the second conductor pair, thereby electrically connecting the first conductor and the second conductor.

[0005] In this disclosure, by using a first gap instead of a through hole on the busbar, the installation position of one of the first and second busbars is not restricted by the installation position of the other when adjusted in the first direction, allowing for flexible adjustment of both the first and second busbars in the first direction. Furthermore, by using a first gap instead of a through hole on the busbar, the first busbar can be matched with second busbars of different specifications, eliminating the need to replace the first busbar along with the second busbar. Moreover, by providing multiple first conductors and multiple second conductors, the first and second busbars can have a larger surface area for the same cross-sectional area, resulting in higher heat dissipation efficiency.

[0006] Furthermore, a plurality of first conductor pairs are arranged side by side in the direction of the third party, with a third gap defined between adjacent first conductor pairs. A plurality of second conductor pairs corresponding to the plurality of first conductor pairs are arranged side by side in the direction of the third party, with adjacent second conductor pairs having a common second conductor disposed in the third gap and sandwiched by adjacent first conductor pairs.

[0007] In this disclosure, by setting multiple first conductor pairs and multiple second conductor pairs, the first busbar and the second busbar can have a large electrical contact area and high connection strength, enabling the distribution cabinet to have high reliability. Furthermore, by setting a common second conductor, the first and second conductors can be compactly arranged together, which is beneficial for the miniaturization and weight reduction of the distribution cabinet.

[0008] Furthermore, the distribution cabinet has a plurality of first busbars and a plurality of second busbars corresponding one-to-one with the plurality of first busbars. The plurality of first busbars are arranged side by side in the third direction, and the plurality of second busbars are staggered in the first direction.

[0009] In this disclosure, by staggering multiple second busbars in a first direction, interference between the multiple second busbars when they are led out from the first busbar can be avoided, thus enabling the distribution cabinet to have a reasonable layout.

[0010] Furthermore, the distribution cabinet further includes: a cabinet body, the cabinet body being provided with a compartment and a heat dissipation plate, the heat dissipation plate being provided with a first heat dissipation hole; and a pressure relief plate, the pressure relief plate being installed on the cabinet body corresponding to the heat dissipation plate, and being provided with a second heat dissipation hole; wherein, the pressure relief plate is configured to move from a closed position to an open position when the pressure in the compartment is greater than the pressure relief pressure; when the pressure relief plate is in the closed position, the compartment is connected to the outside of the distribution cabinet via the first heat dissipation hole and the second heat dissipation hole; when the pressure relief plate is in the open position, the compartment is connected to the outside of the distribution cabinet directly via the first heat dissipation hole without via the second heat dissipation hole.

[0011] In this disclosure, by incorporating a pressure relief plate, the pressure relief plate can protect the compartment when it is in the closed position, preventing foreign objects from entering the compartment, and can reduce the flow resistance of high-temperature and high-pressure gas when it is in the open position, helping the gas to escape from the compartment. This results in a distribution cabinet with high reliability.

[0012] Furthermore, at least one of the compartments houses the first conductor and the second conductor, and / or at least another compartment houses a cable electrically connected to the first conductor via the second conductor.

[0013] In this disclosure, by placing the easily heated first and second conductors within a compartment, the heat from the first and second conductors can be promptly dissipated through the first and second heat dissipation holes. Furthermore, the pressure relief plate provides overheat protection when the first and second conductors overheat, resulting in high reliability for the distribution cabinet. Additionally, by placing the easily heated cables within a compartment, the heat from the cables can be promptly dissipated through the first and second heat dissipation holes, and the pressure relief plate provides overheat protection when the cables overheat, further enhancing the reliability of the distribution cabinet. Moreover, by placing the first conductor, second conductor, and cables in separate compartments, heat transfer between the first conductor, second conductor, and cables is less likely, thereby further improving the reliability of the distribution cabinet.

[0014] Furthermore, the heat sink includes a plurality of first heat dissipation holes, and the pressure relief plate includes a plurality of second heat dissipation holes; all the first heat dissipation holes on the heat sink have a first total flow cross-sectional area, and all the second heat dissipation holes on the pressure relief plate have a second total flow cross-sectional area smaller than the first total flow cross-sectional area.

[0015] In this disclosure, by making the second total flow cross-sectional area smaller than the first total flow cross-sectional area, when the pressure relief plate is in the closed position, external foreign objects are not easily allowed to enter the compartment through the second heat dissipation hole, and when the pressure relief plate is in the open position, the high temperature and high pressure gas in the compartment can be efficiently discharged through the first heat dissipation hole, thus making the distribution cabinet highly reliable.

[0016] Furthermore, the first heat dissipation hole and the second heat dissipation hole have the same shape and size, and the number of the first heat dissipation hole is greater than the number of the second heat dissipation hole.

[0017] In this disclosure, by making the first and second heat dissipation holes have the same shape and size, the first and second heat dissipation holes can be processed using the same cutting tools or molds, thereby reducing the manufacturing cost of the distribution cabinet. Furthermore, the size of the first and second total current-carrying cross-sectional areas, as well as their ratio, can be easily adjusted by changing the number of heat dissipation holes, thereby enabling a variety of different configurations to be achieved at a lower cost.

[0018] Furthermore, the heat sink is disposed at the top of the compartment, and the pressure relief plate is installed on the top of the heat sink; when the pressure relief plate is in the closed position, a heat dissipation gap is formed between the pressure relief plate and the heat sink to connect the first heat dissipation hole and the second heat dissipation hole, and the projections of the first heat dissipation hole in the vertical direction and the projections of the second heat dissipation hole in the vertical direction are offset from each other.

[0019] In this disclosure, by placing the heat sink and pressure relief plate at the top, the rising gas inside the compartment due to increased temperature can precisely reach the first and second heat dissipation holes, enabling the distribution cabinet to achieve high heat dissipation efficiency. Furthermore, by placing the pressure relief plate at the top of the cabinet, it prevents operators from being injured by the pressure relief plate when moving it from the closed to the open position. Moreover, by staggering the projections of the first and second heat dissipation holes, foreign objects falling from above the distribution cabinet will not directly enter the compartment but will be blocked by the heat sink, thereby further improving the reliability of the distribution cabinet.

[0020] Further, the pressure relief plate includes: a central portion having the second heat dissipation hole; a first edge portion extending from the central portion and defining a pivot axis with the cabinet; and a second edge portion extending from the central portion and configured to be connected to the cabinet by fasteners mounted on the cabinet when the pressure in the compartment is less than the pressure relief pressure, so that the pressure relief plate is held in the closed position, and to bend and deform relative to the central portion to separate from the fasteners when the pressure in the compartment is greater than the pressure relief pressure, thereby allowing the pressure relief plate to pivot about the pivot axis from the closed position to the open position.

[0021] In this disclosure, by providing a first edge portion and a second edge portion, the pivoting function of the pressure relief plate can be achieved with a simple structure, enabling the distribution cabinet to achieve high reliability while maintaining low manufacturing costs. Furthermore, by bending and deforming the second edge portion, the fasteners can be prevented from separating from the cabinet body when the pressure relief plate pivots from the closed position to the open position, thereby preventing operators from being injured by the fasteners.

[0022] Furthermore, the cabinet includes a connecting element integrally formed with the first edge portion and defining the pivot axis, the first edge portion being configured to bend and deform relative to the connecting element when the pressure relief plate pivots.

[0023] In this disclosure, by integrally molding the connecting element and the first edge portion, the pressure relief plate can pivot without the aid of components such as hinges, enabling the distribution cabinet to achieve high reliability while maintaining low manufacturing costs. Furthermore, by integrally molding the connecting element and the first edge portion, even if the pressure relief plate is subjected to a significant impact, the connecting element and the first edge portion are less likely to separate, thereby preventing injury to operators from a detached pressure relief plate.

[0024] Furthermore, the second edge portion is provided with a connection hole for receiving the fastener, and the periphery of the connection hole is provided with a notch. The connection hole is configured to allow the fastener to leave the connection hole via the notch when the pressure relief plate moves from the closed position to the open position.

[0025] In this disclosure, by setting a notch, the fastener can smoothly leave the connection hole, thereby avoiding the situation where the pressure relief plate cannot move to the open position due to being stuck by the fastener, thus making the distribution cabinet highly reliable.

[0026] Furthermore, the compartment includes an adjacent first compartment and a second compartment, and the pressure relief plate includes a first pressure relief plate corresponding to the first compartment and a second pressure relief plate corresponding to the second compartment; when the first pressure relief plate and the second pressure relief plate are in the closed position, the first pressure relief plate and the second pressure relief plate are installed on the same plane of the cabinet, the pivot axes of the first pressure relief plate and the second pressure relief plate are parallel to each other, the first pressure relief plate and the second pressure relief plate are arranged side by side in a direction orthogonal to the pivot axes, the first edge of the first pressure relief plate is disposed on the side of the first pressure relief plate opposite to the second pressure relief plate, and the first edge of the second pressure relief plate is disposed on the side of the second pressure relief plate opposite to the first pressure relief plate.

[0027] In this disclosure, the first and second pressure relief plates are arranged in a manner similar to "double doors." On the one hand, the first and second pressure relief plates will not interfere with each other during pivoting; on the other hand, the first pressure relief plate in the open position will not block the first heat dissipation hole corresponding to the second pressure relief plate, and vice versa. This ensures the distribution cabinet has high reliability. Attached Figure Description

[0028] The accompanying drawings, which are included to provide a further understanding of this disclosure and form part of this disclosure, illustrate exemplary embodiments of this disclosure and are used to explain this disclosure, but do not constitute an undue limitation of this disclosure. In the drawings:

[0029] Figure 1 This is a schematic diagram of a power distribution cabinet according to an embodiment of the present disclosure, wherein the pressure relief plate is in the closed position;

[0030] Figure 2 It shows Figure 1 Exploded view of the power distribution cabinet in the middle;

[0031] Figure 3 It shows Figure 1 A partial enlarged view of the distribution cabinet, showing the pressure relief plate;

[0032] Figure 4 It shows Figure 1 A partial enlarged view of the distribution cabinet, showing the first and second conductors located in the first compartment, with some components omitted;

[0033] Figure 5 It shows along Figure 4 The cross-sectional view taken from line AA in the diagram.

[0034] Explanation of icon numbers:

[0035] 10. Distribution cabinet;

[0036] 12. First busbar;

[0037] 14. Second busbar;

[0038] 16. Fastening components;

[0039] 18. The first conductor;

[0040] 181. The first conductor;

[0041] 182. The first conductor;

[0042] 183. The first conductor;

[0043] 184. The first conductor;

[0044] 20. First gap;

[0045] 22. Second conductor;

[0046] 221. Second conductor;

[0047] 222. Second conductor;

[0048] 223. Second conductor;

[0049] 24. Second gap;

[0050] 26. Mounting holes;

[0051] 28. The third gap;

[0052] 30. Cabinet;

[0053] 32. Pressure relief plate;

[0054] 34. Compartment;

[0055] 36. Heat sink;

[0056] 38. First heat dissipation hole;

[0057] 40. Second heat dissipation hole;

[0058] 42. Central part;

[0059] 44. First edge portion;

[0060] 46. ​​Second edge;

[0061] 48. Connecting elements;

[0062] 50. Connecting hole;

[0063] 52. Gap;

[0064] 54. First compartment;

[0065] 56. Second compartment;

[0066] 58. First pressure relief plate;

[0067] 60. Second pressure relief plate;

[0068] 62. The third conductor;

[0069] 64. Bolts;

[0070] 66. Install the beam;

[0071] 68. Protect conductors;

[0072] 70. Functional Units;

[0073] 72. Partition;

[0074] F, First direction;

[0075] S, second direction;

[0076] T, third-party direction. Detailed Implementation

[0077] The technical solutions of the embodiments of this disclosure 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 disclosure, and not all of them. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this disclosure or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without inventive effort are within the scope of protection of this disclosure.

[0078] It should be noted that the terminology used herein is for the purpose of describing particular implementations only and is not intended to limit the exemplary implementations according to this disclosure. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise.

[0079] The following reference Figures 1 to 5 One embodiment of this disclosure is described.

[0080] Figure 1 This is a schematic diagram of a distribution cabinet according to an embodiment of the present disclosure, wherein the pressure relief plate is in the closed position. Figure 2 It shows Figure 1 Exploded view of the power distribution cabinet. Figure 3 It shows Figure 1 The enlarged view of the distribution cabinet in the image shows the pressure relief plate. Figure 4 It shows Figure 1 A partial enlarged view of the distribution cabinet, showing the first and second conductors located in the first compartment, with some components omitted. Figure 5 It shows along Figure 4 The cross-sectional view taken from line AA in the diagram.

[0081] Reference Figure 1 , Figure 4 as well as Figure 5This disclosure provides a distribution cabinet 10, including a first busbar 12, a second busbar 14, and fastening elements 16. The first busbar 12 includes a plurality of first conductors 18 connected in parallel, extending in a first direction F. The plurality of first conductors 18 includes a first conductor pair, two of which are arranged side-by-side in a second direction S orthogonal to the first direction F, defining a first gap 20 between the two first conductors 18. The second busbar 14 includes a plurality of second conductors 22 connected in parallel, extending in the second direction S. The plurality of second conductors 22 includes a second conductor pair, two of which are arranged side-by-side in a third direction T orthogonal to both the first and second directions F, defining a second gap 24 between the two second conductors 22. The first conductor pair is disposed in the second gap 24. Each second conductor 22 in the second conductor pair is provided with a mounting hole 26 aligned with the first gap 20. The fastening element 16 passes through the first gap 20 and the mounting hole 26 to clamp the first conductor pair with the second conductor pair, thereby electrically connecting the first conductor 18 and the second conductor 22.

[0082] As an example, the first direction F and the third direction T can be horizontal, and the second direction S can be vertical. In this configuration, the first busbar 12 can be a horizontal busbar, and the second busbar 14 can be a vertical busbar. In other examples, the first direction F and the second direction S can be horizontal, and the third direction T can be vertical.

[0083] As an example, the first busbar 12 and the second busbar 14 may comprise copper or aluminum. For instance, the first busbar 12 and the second busbar 14 may be made of the same material.

[0084] As an example, the second busbar 14 may also include a plurality of third conductors 62 corresponding one-to-one with a plurality of second conductors 22, each third conductor 62 extending from a second conductor 22 along a third direction T. For example, as Figure 5 As shown, the third conductor 62 can extend from the lower end of the second conductor 22, and multiple third conductors 62 can be arranged side by side in the second direction S. The second conductor 22 and the third conductor 62 can be integrally formed, so that the second conductor 22 and the third conductor 62 are electrically connected to each other.

[0085] As an example, fastening element 16 may include a bolt 64 and a nut (not shown) screwed together. For example, bolt 64 may pass through the first gap 20 and mounting hole 26, and the axial direction of bolt 64 may be parallel to a third direction T.

[0086] In this disclosure, by using a first gap 20 instead of a through hole on the busbar, the installation position of one of the first busbar 12 and the second busbar 14 is not restricted by the installation position of the other when adjusted in the first direction F, allowing the first busbar 12 and the second busbar 14 to be flexibly adjusted in the first direction F. Furthermore, by using the first gap 20 instead of a through hole on the busbar, the first busbar 12 can be matched with second busbars 14 of different specifications, eliminating the need to replace the first busbar 12 along with the second busbar 14. Moreover, by providing multiple first conductors 18 and multiple second conductors 22, the first busbar 12 and the second busbar 14 can have a larger surface area with the same cross-sectional area, resulting in higher heat dissipation efficiency for both.

[0087] Reference Figure 5 Multiple first conductor pairs are arranged side-by-side in a third direction T, with a third gap 28 defining adjacent first conductor pairs. Multiple second conductor pairs, each corresponding to a first conductor pair, are arranged side-by-side in the third direction T, with adjacent second conductor pairs sharing a common second conductor. The common second conductor is disposed in the third gap 28 and is sandwiched between adjacent first conductor pairs.

[0088] As an example, the plurality of first conductors 18 may include first conductors 181, 182, 183, and 184. First conductors 181 and 182 may form one first conductor pair, and first conductors 183 and 184 may form another adjacent first conductor pair. A third gap 28 may be located between these two first conductor pairs. The plurality of second conductors 22 may include second conductors 221, 222, and 223. Second conductors 221 and 222 may form one second conductor pair, and second conductors 222 and 223 may form another second conductor pair. Second conductor 222 (… Figure 5 The second conductor located in the middle can be the common second conductor shared by these two pairs of second conductors, and is positioned in the third gap 28. In other examples, the first busbar 12 can have more pairs of first conductors, and the second busbar 14 can have more pairs of second conductors.

[0089] In this disclosure, by providing multiple first conductor pairs and multiple second conductor pairs, the first busbar 12 and the second busbar 14 can have a large electrical contact area and high connection strength, enabling the distribution cabinet 10 to have high reliability. Furthermore, by providing a common second conductor, the first conductor 18 and the second conductor 22 can be compactly arranged together, thereby facilitating the miniaturization and weight reduction of the distribution cabinet 10.

[0090] Reference Figure 4The distribution cabinet 10 has multiple first busbars 12 and multiple second busbars 14 corresponding to the multiple first busbars 12. The multiple first busbars 12 are arranged side by side in a third direction T, and the multiple second busbars 14 are staggered in a first direction F.

[0091] Here, "offset in the first direction F" means that they are located at different positions in the first direction F.

[0092] As an example, the distribution cabinet 10 may have at least three first buses 12 for transmitting, for example, three-phase alternating current. For example, the distribution cabinet 10 may be used to control an AC motor.

[0093] In this disclosure, by staggering the multiple second busbars 14 in the first direction F, it is possible to avoid interference between the multiple second busbars 14 when they are led out from the first busbar 12, so that the distribution cabinet 10 can have a reasonable layout.

[0094] Reference Figures 1 to 3 The distribution cabinet 10 also includes a cabinet body 30 and a pressure relief plate 32. The cabinet body 30 has a compartment 34 and a heat dissipation plate 36, with a first heat dissipation hole 38 on the heat dissipation plate 36. The pressure relief plate 32 is installed on the cabinet body 30 corresponding to the heat dissipation plate 36 and has a second heat dissipation hole 40. The pressure relief plate 32 is configured to move from a closed position to an open position when the pressure in the compartment 34 exceeds the pressure relief pressure. When the pressure relief plate 32 is in the closed position, the compartment 34 communicates with the outside of the distribution cabinet 10 via the first heat dissipation hole 38 and the second heat dissipation hole 40. When the pressure relief plate 32 is in the open position, the compartment 34 communicates with the outside of the distribution cabinet 10 directly via the first heat dissipation hole 38 without communicating via the second heat dissipation hole 40.

[0095] As an example, the cabinet 30 may also include a frame consisting of multiple mounting beams 66. A compartment 34 may be located inside the frame, and a pressure relief plate 32 and a heat dissipation plate 36 may be supported on the frame. The mounting beams 66 may be C-shaped, and multiple mounting beams 66 may be securely connected by fasteners.

[0096] As an example, the cabinet 30 may also include a protective conductor 68. The protective conductor 68 may be electrically connected to the mounting beam 66 to ground the cabinet 30.

[0097] As an example, the heat sink 36 can form the wall of the compartment 34, and the pressure relief plate 32 can be installed on the outside of the heat sink 36. When the pressure relief plate 32 is in the closed position, the pressure relief plate 32 and the heat sink 36 can be arranged approximately parallel, and the compartment 34 can communicate with the outside through the first heat dissipation hole 38 and the second heat dissipation hole 40 in sequence. When the pressure relief plate 32 is in the open position, the pressure relief plate 32 can form a certain angle with the heat sink 36.

[0098] It should be understood that the pressure relief pressure can be a point value or a range, and its magnitude can be determined by materials, structure, size, etc.

[0099] In this disclosure, by providing a pressure relief plate 32, the pressure relief plate 32 can protect the compartment 34 when it is in the closed position, preventing foreign objects from entering the compartment 34, and can reduce the flow resistance of high-temperature and high-pressure gas when it is in the open position, helping the gas to escape from the compartment 34. In this way, the distribution cabinet 10 can have high reliability.

[0100] Reference Figure 1 At least one compartment 34 contains a first conductor 18 and a second conductor 22, and / or at least another compartment 34 contains a cable (not shown) electrically connected to the first conductor 18 via the second conductor 22.

[0101] As an example, the cabinet 30 may include multiple compartments 34, with a first compartment 54 and a second compartment 56 arranged adjacent to each other in a third direction T. The tops of the first compartment 54 and the second compartment 56 may be substantially flush, and the bottom of the second compartment 56 may extend downward beyond the bottom of the first compartment 54. For example, the second compartment 56 may extend the entire height of the cabinet 30 in a second direction S. A first conductor 18 and a second conductor 22 may be arranged in the first compartment 54, and cables may be arranged in the second compartment 56.

[0102] As an example, the distribution cabinet 10 may also include multiple functional units 70. For example, the functional unit 70 may be a circuit breaker or a current transformer. The multiple functional units 70 may be located below the first compartment 54 and arranged side by side in the second direction S. The first busbar 12 may be electrically connected to the cable via the second busbar 14 and the functional units 70 in sequence.

[0103] As an example, the cabinet 30 may also include multiple partitions 72. The partitions 72 may be disposed between adjacent functional units 70 to separate adjacent functional units 70.

[0104] In this disclosure, by placing the easily heated first conductor 18 and second conductor 22 within the compartment 34, the heat from the first conductor 18 and second conductor 22 can be promptly dissipated through the first heat dissipation hole 38 and the second heat dissipation hole 40. Furthermore, the pressure relief plate 32 provides overheat protection when the first conductor 18 and second conductor 22 overheat, thus enabling the distribution cabinet 10 to have high reliability. In addition, by placing the easily heated cables within the compartment 34, the heat from the cables can be promptly dissipated through the first heat dissipation hole 38 and the second heat dissipation hole 40, and the pressure relief plate 32 provides overheat protection when the cables overheat, thus enabling the distribution cabinet 10 to have high reliability. Moreover, by placing the first conductor 18, second conductor 22, and cables in different compartments 34, heat is less likely to transfer between the first conductor 18, second conductor 22, and cables, thereby further improving the reliability of the distribution cabinet 10.

[0105] Reference Figure 2 The heat sink 36 includes a plurality of first heat dissipation holes 38, and the pressure relief plate 32 includes a plurality of second heat dissipation holes 40. All the first heat dissipation holes 38 on the heat sink 36 have a first total flow cross-sectional area, and all the second heat dissipation holes 40 on the pressure relief plate 32 have a second total flow cross-sectional area smaller than the first total flow cross-sectional area.

[0106] Here, "first total flow cross-sectional area" refers to the flow cross-sectional area of ​​the plurality of first heat dissipation holes 38, and "plural second total flow cross-sectional area" refers to the sum of the flow cross-sectional areas of the plurality of second heat dissipation holes 40.

[0107] In this disclosure, by making the second total flow cross-sectional area smaller than the first total flow cross-sectional area, when the pressure relief plate 32 is in the closed position, external foreign objects are not easily allowed to enter the compartment 34 through the second heat dissipation hole 40. When the pressure relief plate 32 is in the open position, the high temperature and high pressure gas in the compartment 34 can be efficiently discharged through the first heat dissipation hole 38, so that the distribution cabinet 10 has high reliability.

[0108] Reference Figure 2 The first heat dissipation hole 38 and the second heat dissipation hole 40 have the same shape and size, and the number of the first heat dissipation hole 38 is greater than the number of the second heat dissipation hole 40.

[0109] As an example, the first heat dissipation hole 38 and the second heat dissipation hole 40 can be oblong, and the plurality of first heat dissipation holes 38 and the plurality of second heat dissipation holes 40 can be arranged in an array. For example, the plurality of first heat dissipation holes 38 can be arranged in a 5×7 array, and the plurality of second heat dissipation holes 40 can be arranged in a 5×6 array. Of course, in other examples, the first heat dissipation holes 38 and the second heat dissipation holes 40 can also have other numbers and / or shapes.

[0110] In this disclosure, by making the first heat dissipation hole 38 and the second heat dissipation hole 40 have the same shape and size, the first heat dissipation hole 38 and the second heat dissipation hole 40 can be processed using the same cutting tools or molds, thereby reducing the manufacturing cost of the distribution cabinet 10. Furthermore, the size of the first total current-carrying cross-sectional area and the second total current-carrying cross-sectional area, as well as their ratio, can be easily adjusted by changing the number of heat dissipation holes, thereby enabling a variety of different configurations to be achieved at a lower cost.

[0111] Reference Figure 1 and Figure 2 The heat sink 36 is disposed on the top of the compartment 34, and the pressure relief plate 32 is installed on the top of the heat sink 36. When the pressure relief plate 32 is in the closed position, a heat dissipation gap is formed between the pressure relief plate 32 and the heat sink 36, which connects the first heat dissipation hole 38 and the second heat dissipation hole 40. The projections of the first heat dissipation hole 38 in the vertical direction and the projections of the second heat dissipation hole 40 in the vertical direction are offset from each other.

[0112] Here, "projections are staggered" means that there is no overlap between one projection and another.

[0113] As an example, the pivot axis of the pressure relief plate 32 can be parallel to the horizontal direction, for example, parallel to the first direction F. When the pressure relief plate 32 is in the closed position, the thickness direction of the pressure relief plate 32 and the heat sink 36 can be parallel to the vertical direction, for example, parallel to the second square S.

[0114] In this disclosure, by placing the heat sink 36 and the pressure relief plate 32 at the top, the gas rising in the compartment 34 due to increased temperature can precisely reach the first heat dissipation hole 38 and the second heat dissipation hole 40, enabling the distribution cabinet 10 to have high heat dissipation efficiency. Furthermore, by placing the pressure relief plate 32 at the top of the cabinet 30, it is possible to prevent operators from being injured by the pressure relief plate 32 when it is moved from the closed position to the open position. Moreover, by staggering the projections of the first heat dissipation hole 38 and the second heat dissipation hole 40, foreign objects falling from above the distribution cabinet 10 (e.g., water droplets) will not directly enter the compartment 34 but will be blocked by the heat sink 36, thereby further improving the reliability of the distribution cabinet 10.

[0115] Reference Figure 3The pressure relief plate 32 includes a central portion 42, a first edge portion 44, and a second edge portion 46. The central portion 42 is provided with a second heat dissipation hole 40. The first edge portion 44 extends from the central portion 42 and defines a pivot axis with the cabinet 30. The second edge portion 46 extends from the central portion 42 and is configured to be connected to the cabinet 30 by fasteners (not shown) mounted on the cabinet 30 when the pressure in the compartment 34 is less than the pressure relief pressure, so that the pressure relief plate 32 is held in a closed position, and to bend relative to the central portion 42 to separate from the fasteners when the pressure in the compartment 34 is greater than the pressure relief pressure, thereby allowing the pressure relief plate 32 to pivot from a closed position to an open position about the pivot axis.

[0116] Here, "bending deformation" can be either elastic or plastic.

[0117] As an example, the fastener could be a bolt, which could be screwed onto the heat sink 36.

[0118] As an example, the first edge portion 44 may extend from a first side of the center portion 42, and the second edge portion 46 may extend from a second side of the center portion 42 opposite to the first side. For example, the center portion 42 may be generally rectangular, and the first edge portion 44 and the second edge portion 46 may extend from two parallel sides of the rectangle, respectively.

[0119] As an example, the pressure relief plate 32 may include a plurality of second edge portions 46, which may be arranged side by side on the same side of the central portion 42. In other examples, the plurality of second edge portions 46 may also be arranged on different sides of the central portion 42.

[0120] In this disclosure, by providing a first edge portion 44 and a second edge portion 46, the pivoting function of the pressure relief plate 32 can be achieved with a simple structure, enabling the distribution cabinet 10 to have high reliability while maintaining low manufacturing costs. Furthermore, by bending and deforming the second edge portion 46, the fasteners can be prevented from separating from the cabinet 30 when the pressure relief plate 32 pivots from the closed position to the open position, thereby preventing injury to operators from the fasteners.

[0121] Reference Figure 3 The cabinet 30 includes a connecting element 48. The connecting element 48 and a first edge portion 44 are integrally formed and define a pivot axis. The first edge portion 44 is configured to bend relative to the connecting element 48 when the pressure relief plate 32 pivots.

[0122] As an example, the connecting element 48 can be mounted to the heat sink 36 using fasteners.

[0123] As an example, the first edge 44 and the connecting element 48 may be pre-bent before the pressure relief plate 32 pivots to the open position to form a crease that aids pivoting. In other words, the pivot axis of the pressure relief plate 32 may approximately coincide with the crease. In other examples, a weak portion that aids pivoting may be provided between the first edge 44 and the connecting element 48. The weak portion may be a section that is relatively thinner than its surrounding area, or it may be a through-hole.

[0124] In this disclosure, by integrally molding the connecting element 48 and the first edge portion 44, the pressure relief plate 32 can pivot without the aid of components such as hinges, allowing the distribution cabinet 10 to achieve high reliability while maintaining low manufacturing costs. Furthermore, by integrally molding the connecting element 48 and the first edge portion 44, even if the pressure relief plate 32 is subjected to a significant impact, the connecting element 48 and the first edge portion 44 are not easily separated, thereby preventing a detached pressure relief plate 32 from injuring operators.

[0125] Reference Figure 3 The second edge portion 46 is provided with a connection hole 50 for receiving a fastener, and a notch 52 is provided around the connection hole 50. The connection hole 50 is configured to allow the fastener to leave the connection hole 50 through the notch 52 when the pressure relief plate 32 moves from the closed position to the open position.

[0126] In this disclosure, by providing a notch 52, the fastener can smoothly leave the connection hole 50, thereby preventing the pressure relief plate 32 from being stuck by the fastener and unable to move to the open position, thus making the distribution cabinet 10 highly reliable.

[0127] Reference Figure 1 and Figure 2 The pressure relief plate 32 includes a first pressure relief plate 58 corresponding to the first compartment 54 and a second pressure relief plate 60 corresponding to the second compartment 56. When the first pressure relief plate 58 and the second pressure relief plate 60 are in the closed position, they are mounted on the same plane of the cabinet 30, and their pivot axes are parallel to each other. The first pressure relief plate 58 and the second pressure relief plate 60 are arranged side by side in a direction orthogonal to the pivot axes. The first edge portion 44 of the first pressure relief plate 58 is located on the side of the first pressure relief plate 58 opposite to the second pressure relief plate 60, and the first edge portion 44 of the second pressure relief plate 60 is located on the side of the second pressure relief plate 60 opposite to the first pressure relief plate 58. In other words, the first pressure relief plate 58 and the second pressure relief plate 60 can be arranged in a form similar to a "double door".

[0128] As an example, the first pressure relief plate 58 can be positioned directly above the first compartment, and the second pressure relief plate 60 can be positioned directly above the second compartment 56. The pivot axes of the first pressure relief plate 58 and the second pressure relief plate 60 can be parallel to the first direction F, and the first pressure relief plate 58 and the second pressure relief plate 60 can be arranged side by side in the third direction T.

[0129] As an example, the heat sink 36 corresponding to the first pressure relief plate 58 and the heat sink 36 corresponding to the second pressure relief plate 60 can be integrally formed.

[0130] In this disclosure, by arranging the first pressure relief plate 58 and the second pressure relief plate 60 in a manner similar to "double doors," on the one hand, the first pressure relief plate 58 and the second pressure relief plate 60 will not interfere with each other when pivoting; on the other hand, the first pressure relief plate 58 in the open position will not block the first heat dissipation hole 38 corresponding to the second pressure relief plate 60, and the second pressure relief plate 60 in the open position will not block the first heat dissipation hole 38 corresponding to the first pressure relief plate 58. Thus, the distribution cabinet 10 can have high reliability.

[0131] The above are merely preferred embodiments of this disclosure. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this disclosure, and these improvements and modifications should also be considered within the scope of protection of this disclosure.

Claims

1. A power distribution cabinet (10), characterized in that, include: A first busbar (12) comprising a plurality of first conductors (18) connected in parallel to each other, the first conductors (18) extending in a first direction (F), the plurality of first conductors (18) comprising a pair of first conductors, two of the first conductors (18) in the pair being arranged side by side in a second direction (S) orthogonal to the first direction (F), and defining a first gap (20) between the two first conductors (18); A second busbar (14) comprising a plurality of second conductors (22) connected in parallel to each other, the second conductors (22) extending in a second direction (S), the plurality of second conductors (22) comprising pairs of second conductors, two of the second conductors (22) in the second conductor pairs being arranged side-by-side in a third direction (T) orthogonal to both the first direction (F) and the second direction (S), and defining a second gap (24) between the two second conductors (22), the first conductor pair being disposed in the second gap (24), each of the second conductors (22) in the second conductor pair being provided with a mounting hole (26) aligned with the first gap (20); and A fastening element (16) passes through the first gap (20) and the mounting hole (26) to clamp the first conductor pair with the second conductor pair, thereby electrically connecting the first conductor (18) and the second conductor (22).

2. The distribution cabinet (10) according to claim 1, characterized in that, Multiple first conductor pairs are arranged side by side in the third direction (T), with a third gap (28) defined between adjacent first conductor pairs. Multiple second conductor pairs corresponding to the multiple first conductor pairs are arranged side by side in the third direction (T), with adjacent second conductor pairs having a common second conductor disposed in the third gap (28) and sandwiched by adjacent first conductor pairs.

3. The distribution cabinet (10) according to claim 1, characterized in that, The distribution cabinet (10) has a plurality of first busbars (12) and a plurality of second busbars (14) corresponding one-to-one with the plurality of first busbars (12). Multiple first busbars (12) are arranged side by side in the third direction (T), and multiple second busbars (14) are staggered in the first direction (F).

4. The distribution cabinet (10) according to any one of claims 1 to 3, characterized in that, The power distribution cabinet (10) also includes: A cabinet (30), the cabinet (30) being provided with a compartment (34) and a heat dissipation plate (36), the heat dissipation plate (36) being provided with a first heat dissipation hole (38); and Pressure relief plate (32), which is installed on the cabinet (30) in correspondence with the heat dissipation plate (36) and is provided with a second heat dissipation hole (40); The pressure relief plate (32) is configured to move from a closed position to an open position when the pressure in the compartment (34) is greater than the pressure relief pressure. When the pressure relief plate (32) is in the closed position, the compartment (34) is connected to the outside of the distribution cabinet (10) via the first heat dissipation hole (38) and the second heat dissipation hole (40). When the pressure relief plate (32) is in the open position, the compartment (34) is directly connected to the outside of the power distribution cabinet (10) via the first heat dissipation hole (38) without via the second heat dissipation hole (40).

5. The power distribution cabinet (10) according to claim 4, characterized in that, At least one of the compartments (34) accommodates the first conductor (18) and the second conductor (22), and / or At least one of the compartments (34) contains a cable that is electrically connected to the first conductor (18) via the second conductor (22).

6. The power distribution cabinet (10) according to claim 4, characterized in that, The heat sink (36) includes a plurality of first heat dissipation holes (38), and the pressure relief plate (32) includes a plurality of second heat dissipation holes (40); All the first heat dissipation holes (38) on the heat sink (36) have a first total flow cross-sectional area, and all the second heat dissipation holes (40) on the pressure relief plate (32) have a second total flow cross-sectional area smaller than the first total flow cross-sectional area.

7. The distribution cabinet (10) according to claim 6, characterized in that, The first heat dissipation hole (38) and the second heat dissipation hole (40) have the same shape and size, and the number of the first heat dissipation hole (38) is greater than the number of the second heat dissipation hole (40).

8. The power distribution cabinet (10) according to claim 4, characterized in that, The heat sink (36) is disposed on the top of the compartment (34), and the pressure relief plate (32) is installed on the top of the heat sink (36); When the pressure relief plate (32) is in the closed position, a heat dissipation gap is formed between the pressure relief plate (32) and the heat dissipation plate (36) to connect the first heat dissipation hole (38) and the second heat dissipation hole (40), and the projection of the first heat dissipation hole (38) in the vertical direction and the projection of the second heat dissipation hole (40) in the vertical direction are offset from each other.

9. The distribution cabinet (10) according to claim 4, characterized in that, The pressure relief plate (32) includes: The central part (42) is provided with the second heat dissipation hole (40); A first edge portion (44) extends from the center portion (42) and defines a pivot axis with respect to the cabinet body (30); and A second edge portion (46) extends from the center portion (42) and is configured to be connected to the cabinet (30) by fasteners mounted on the cabinet (30) when the pressure in the compartment (34) is less than the pressure relief pressure, so that the pressure relief plate (32) is held in the closed position, and to bend relative to the center portion (42) to separate from the fasteners when the pressure in the compartment (34) is greater than the pressure relief pressure, thereby allowing the pressure relief plate (32) to pivot about the pivot axis from the closed position to the open position.

10. The power distribution cabinet (10) according to claim 9, characterized in that, The cabinet (30) includes a connecting element (48) integrally formed with the first edge portion (44) and defining the pivot axis, the first edge portion (44) being configured to bend relative to the connecting element (48) when the pressure relief plate (32) pivots.

11. The power distribution cabinet (10) according to claim 9, characterized in that, The second edge portion (46) is provided with a connection hole (50) for receiving the fastener, and a notch (52) is provided around the connection hole (50). The connection hole (50) is configured to allow the fastener to leave the connection hole (50) via the notch (52) when the pressure relief plate (32) moves from the closed position to the open position.

12. The power distribution cabinet (10) according to claim 9, characterized in that, The compartment (34) includes an adjacent first compartment (54) and a second compartment (56), and the pressure relief plate (32) includes a first pressure relief plate (58) corresponding to the first compartment (54) and a second pressure relief plate (60) corresponding to the second compartment (56); When the first pressure relief plate (58) and the second pressure relief plate (60) are in the closed position, the first pressure relief plate (58) and the second pressure relief plate (60) are installed on the same plane of the cabinet (30), the pivot axes of the first pressure relief plate (58) and the second pressure relief plate (60) are parallel to each other, the first pressure relief plate (58) and the second pressure relief plate (60) are arranged side by side in a direction orthogonal to the pivot axis, the first edge portion (44) of the first pressure relief plate (58) is provided on the side of the first pressure relief plate (58) away from the second pressure relief plate (60), and the first edge portion (44) of the second pressure relief plate (60) is provided on the side of the second pressure relief plate (60) away from the first pressure relief plate (58).

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