High-voltage distribution box and airplane
By setting up an insulating support plate in the high-voltage distribution box of new energy transportation equipment, connecting the positive and negative electrode interfaces respectively, the safety hazards of the equipment under severe weather conditions are solved, and the safe and reliable power consumption of high-voltage electrical components is achieved.
Patent Information
- Application Number
- CN202420378053.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-28
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-02-28
Smart Images
Figure CN222531128U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field related to new energy transportation equipment, and specifically relates to a high-voltage distribution box and an aircraft. Background Art
[0002] With the rapid development of new energy transportation equipment, the design of high-voltage distribution boxes for new energy transportation equipment is becoming more and more challenging. By directly connecting the high-voltage power supply to the high-voltage distribution box and distributing it to high-voltage electrical components according to the needs of the new energy transportation equipment, there are high requirements for how to improve the safety of various high-voltage electrical components of the entire new energy transportation equipment. Otherwise, when encountering severe weather, new energy transportation equipment will have great safety hazards. Utility Model Content
[0003] Therefore, the technical problem to be solved by the present invention is how to improve the safety of various high-voltage electrical components of the entire new energy transportation equipment.
[0004] In order to solve the above technical problems, the utility model provides a high-voltage distribution box.
[0005] Optionally, the high-voltage distribution box includes a box body, multiple positive electrode interfaces, multiple negative electrode interfaces and an insulating support plate, wherein the box body has a accommodating cavity; some of the multiple positive electrode interfaces are arranged on the first cavity wall surface of the accommodating cavity, and the remaining positive electrode interfaces are arranged on the second cavity wall surface of the accommodating cavity; some of the multiple negative electrode interfaces are arranged on the first cavity wall surface of the accommodating cavity, and the remaining negative electrode interfaces are arranged on the second cavity wall surface of the accommodating cavity; the positive electrode interfaces located on one side of the accommodating cavity are connected in series in sequence, and the negative electrode interfaces located on one side of the accommodating cavity are connected in series in sequence; the insulating support plate is arranged in the accommodating cavity, and the two sides of the insulating support plate are respectively connected to the third cavity wall surface and the fourth cavity wall surface of the accommodating cavity; wherein the multiple positive electrode interfaces are located on one side of the insulating support plate in the thickness direction, and the multiple negative electrode interfaces are located on the other side of the insulating support plate in the thickness direction.
[0006] Optionally, the first cavity wall surface and the second cavity wall surface are arranged opposite to each other, and the third cavity wall surface and the fourth cavity wall surface are arranged opposite to each other.
[0007] Optionally, the positive electrode interfaces located on one side of the accommodating cavity are connected in series in sequence through a first bus assembly, and the negative electrode interfaces located on one side of the accommodating cavity are connected in series in sequence through a second bus assembly, and at least the insulating support plate is used to separate the first bus assembly and the second bus assembly.
[0008] Optionally, the first bus assembly includes two first bus bars, the first end of the first first bus bar of the two first bus bars is used to be electrically connected to the positive electrode interface penetrated through the wall surface of the first cavity, the second end of the first first bus bar is electrically connected to the second first bus bar through the first conductive column, and the second first bus bar is used to be electrically connected to the positive electrode interface penetrated through the wall surface of the second cavity.
[0009] Optionally, the first first bus bar is L-shaped, and the second first bus bar is straight-line-shaped.
[0010] Optionally, the second bus assembly includes two second bus bars, the first end of the first second bus bar of the two second bus bars is used to be electrically connected to a negative electrode interface penetrated through the wall surface of the first cavity, the second end of the first second bus bar is electrically connected to the second second bus bar, and the second second bus bar is used to be electrically connected to the negative electrode interface penetrated through the wall surface of the second cavity.
[0011] Optionally, the high-voltage distribution box also includes a first bus, a plurality of third conductive columns, a second bus and a plurality of power supply interfaces, wherein the first bus is arranged on the first side wall surface in the thickness direction of the insulating support plate, and the first bus is electrically connected to the first bus assembly through the second conductive column; the first ends of the plurality of third conductive columns are electrically connected to the first bus; the second bus is arranged on the first side wall surface in the thickness direction of the insulating support plate, and the second ends of the plurality of third conductive columns are electrically connected to the second bus; the plurality of power supply interfaces are penetrated on the first cavity wall surface of the accommodating cavity, and each power supply interface located on one side of the accommodating cavity is electrically connected to the second bus.
[0012] Optionally, the second conductive column is arranged on a second side wall surface in the thickness direction of the insulating support plate.
[0013] Optionally, the first bus bar is arranged in parallel with the second bus bar.
[0014] Optionally, the number of positive electrode interfaces is equal to the number of negative electrode interfaces, wherein the number of positive electrode interfaces penetrated on the first cavity wall is equal to the number of negative electrode interfaces penetrated on the first cavity wall; and / or the number of positive electrode interfaces penetrated on the second cavity wall is equal to the number of negative electrode interfaces penetrated on the second cavity wall.
[0015] Optionally, the high-voltage distribution box also includes multiple fuses and multiple insulating columns, wherein the first ends of the multiple fuses are respectively electrically connected to the positive electrode interfaces penetrated through the wall surface of the second cavity; the multiple insulating columns are protruding on the second side wall surface in the thickness direction of the insulating support plate, and the second ends of the multiple fuses are supported on the corresponding insulating columns.
[0016] Optionally, the high-voltage distribution box also includes a relay and a high-voltage detection interface, wherein the relay is arranged on the second side wall surface in the thickness direction of the insulating support plate; the high-voltage detection interface is penetrated through the second cavity wall surface of the accommodating cavity, and the high-voltage detection interface located on one side of the accommodating cavity is electrically connected to the relay.
[0017] Optionally, the high-voltage distribution box also includes a charging input interface, and the charging input interface is arranged on the second cavity wall of the accommodating cavity.
[0018] The utility model also provides an aircraft, comprising a high-voltage distribution box, and the high-voltage distribution box is the high-voltage distribution box mentioned above.
[0019] The technical solution provided by the utility model has the following advantages:
[0020] The high-voltage distribution box provided by the utility model is provided with an insulating support plate in the accommodating cavity of the high-voltage distribution box, and the two sides of the insulating support plate are respectively connected to the third cavity wall surface and the fourth cavity wall surface of the accommodating cavity, so that a plurality of positive electrode interfaces are located on one side of the thickness direction of the insulating support plate, and a plurality of negative electrode interfaces are located on the other side of the thickness direction of the insulating support plate. In this way, since the positive electrode interfaces located on one side of the accommodating cavity are connected in series in sequence, and the negative electrode interfaces located on one side of the accommodating cavity are connected in series in sequence, the setting of the insulating support plate makes the positive electrode interfaces and the negative electrode interfaces respectively located on both sides of the thickness direction of the insulating support plate, which is conducive to preventing the positive and negative electrodes from short-circuiting, thereby ensuring the power distribution reliability of the high-voltage distribution box, and further ensuring the power safety of each high-voltage electrical component. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0022] Figure 1 A structural schematic diagram of a high-voltage distribution box is provided for Example 1 of the utility model;
[0023] Figure 2 A structural schematic diagram of a high-voltage distribution box from another perspective is provided for Embodiment 1 of the utility model;
[0024] Figure 3 For this utility model Figure 1 Schematic diagram of the internal structure of the high-voltage distribution box;
[0025] Figure 4 For this utility model Figure 2 Schematic diagram of the internal structure of the high-voltage distribution box;
[0026] Figure 5 For this utility model Figure 3 Schematic diagram of the internal structure of the high-voltage distribution box from the main view perspective.
[0027] Description of reference numerals:
[0028] 10-box; 111-first cavity wall; 112-second cavity wall; 113-third cavity wall; 114-fourth cavity wall;
[0029] 20- positive electrode interface; 30- negative electrode interface;
[0030] 40-insulating support plate; 41-first side wall surface; 42-second side wall surface;
[0031] 50 - first bus assembly; 51 - first bus bar; 52 - first conductive column;
[0032] 60 - second bus assembly; 61 - second bus bar;
[0033] 70-first bus; 80-second conductive column; 90-third conductive column; 100-second bus; 200-power supply interface; 300-fuse; 400-insulating column; 500-relay; 600-high voltage detection interface; 700-charging input interface. DETAILED DESCRIPTION
[0034] The technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all of the embodiments. The utility model will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.
[0035] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.
[0036] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.
[0037] The utility model solves the problem in the prior art of how to improve the safety of various high-voltage electrical components of the entire new energy transportation equipment.
[0038] Example 1
[0039] like Figures 1 to 5 As shown, the present embodiment provides a high-voltage distribution box, which includes a box body 10, a plurality of positive electrode interfaces 20, a plurality of negative electrode interfaces 30 and an insulating support plate 40, wherein the box body 10 has a receiving cavity; some of the positive electrode interfaces 20 of the plurality of positive electrode interfaces 20 are arranged on the first cavity wall 111 of the receiving cavity, and the remaining positive electrode interfaces 20 are arranged on the second cavity wall 112 of the receiving cavity; some of the negative electrode interfaces 30 of the plurality of negative electrode interfaces 30 are arranged on the first cavity wall 111 of the receiving cavity, and the remaining negative electrode interfaces 30 It is penetrated on the second cavity wall 112 of the accommodating cavity; the positive electrode interfaces 20 located on one side of the accommodating cavity are connected in series in sequence, and the negative electrode interfaces 30 located on one side of the accommodating cavity are connected in series in sequence; the insulating support plate 40 is arranged in the accommodating cavity, and the two sides of the insulating support plate 40 are respectively connected to the third cavity wall 113 and the fourth cavity wall 114 of the accommodating cavity; wherein, the plurality of positive electrode interfaces 20 are located on one side of the insulating support plate 40 in the thickness direction, and the plurality of negative electrode interfaces 30 are located on the other side of the insulating support plate 40 in the thickness direction.
[0040] By arranging an insulating support plate 40 in the accommodating cavity of the high-voltage distribution box, and connecting the two sides of the insulating support plate 40 to the third cavity wall 113 and the fourth cavity wall 114 of the accommodating cavity respectively, a plurality of positive electrode interfaces 20 are located on one side of the insulating support plate 40 in the thickness direction, and a plurality of negative electrode interfaces 30 are located on the other side of the thickness direction of the insulating support plate 40. In this way, since the positive electrode interfaces 20 located on one side of the accommodating cavity are connected in series in sequence, and the negative electrode interfaces 30 located on one side of the accommodating cavity are connected in series in sequence, the arrangement of the insulating support plate 40 makes the positive electrode interfaces 20 and the negative electrode interfaces 30 respectively located on both sides of the thickness direction of the insulating support plate 40, which is conducive to preventing the positive and negative electrodes from short-circuiting, thereby ensuring the power distribution reliability of the high-voltage distribution box, and further ensuring the power safety of each high-voltage electrical component.
[0041] It should be noted that, in the present application, the first cavity wall 111 and the second cavity wall 112 are arranged opposite to each other, and the third cavity wall 113 and the fourth cavity wall 114 are arranged opposite to each other. In this way, the box body 10 is a rectangular parallelepiped structure, which is compact and avoids occupying a large installation space of the aircraft.
[0042] It should be noted that, in the present application, the insulating support plate 40 can also play a supporting role.
[0043] like Figure 3 and Figure 4As shown, each positive electrode interface 20 located on one side of the accommodating cavity is sequentially connected in series through the first busbar assembly 50, and each negative electrode interface 30 located on one side of the accommodating cavity is sequentially connected in series through the second busbar assembly 60, and at least the insulating support plate 40 is used to separate the first busbar assembly 50 from the second busbar assembly 60. In this way, the first busbar assembly 50 and the second busbar assembly 60 are separated to prevent the two from being electrically short-circuited due to rainy days or other factors.
[0044] like Figures 3 to 5 As shown, the first bus assembly 50 includes two first bus bars 51, the first end of the first first bus bar 51 of the two first bus bars 51 is used to electrically connect to the positive electrode interface 20 penetrated on the first cavity wall 111, the second end of the first first bus bar 51 is electrically connected to the second first bus bar 51 through the first conductive column 52, and the second first bus bar 51 is used to electrically connect to the positive electrode interface 20 penetrated on the second cavity wall 112. In this way, by setting the first bus assembly 50 to include a structural form of two first bus bars 51, while ensuring the electrical connection reliability of each positive electrode interface 20, it is also conducive to ensuring the structural compactness of the high-voltage distribution box, thereby ensuring the miniaturization design of the high-voltage distribution box.
[0045] like Figures 3 to 5 As shown, the first first bus bar 51 is L-shaped, and the second first bus bar 51 is straight-shaped.
[0046] like Figures 3 to 5 As shown, the second bus assembly 60 includes two second bus bars 61, the first end of the first second bus bar 61 of the two second bus bars 61 is used to electrically connect to the negative electrode interface 30 penetrated on the first cavity wall 111, the second end of the first second bus bar 61 is electrically connected to the second second bus bar 61, and the second second bus bar 61 is used to electrically connect to the negative electrode interface 30 penetrated on the second cavity wall 112. In this way, by setting the second bus assembly 60 to include a structural form of two second bus bars 61, the electrical connection reliability of each negative electrode interface 30 is ensured, and it is also conducive to ensuring the compactness of the structure of the high-voltage distribution box, thereby ensuring the miniaturization design of the high-voltage distribution box.
[0047] like Figure 5As shown, the high-voltage distribution box also includes a first busbar 70, a plurality of third conductive columns 90, a second busbar 100 and a plurality of power supply interfaces 200, wherein the first busbar 70 is arranged on the first side wall surface 41 in the thickness direction of the insulating support plate 40, and the first busbar 70 is electrically connected to the first bus assembly 50 through the second conductive column 80; the first ends of the plurality of third conductive columns 90 are electrically connected to the first busbar 70; the second busbar 100 is arranged on the first side wall surface 41 in the thickness direction of the insulating support plate 40, and the second ends of the plurality of third conductive columns 90 are electrically connected to the second busbar 100; the plurality of power supply interfaces 200 are penetrated on the first cavity wall surface 111 of the accommodating cavity, and each power supply interface 200 located on one side of the accommodating cavity is electrically connected to the second busbar 100. In this way, it is ensured that the present application uses three positive electrodes to merge and then divides out seven lines for powering the electrical equipment, thereby ensuring the normal operation of the electrical equipment.
[0048] like Figure 5 As shown, the second conductive column 80 is disposed on the second side wall surface 42 in the thickness direction of the insulating support plate 40. In this way, while ensuring full utilization of the space of the accommodating cavity of the box body 10, the effectiveness of the electrical connection between the first busbar 70 and the first bus assembly 50 through the second conductive column 80 is ensured.
[0049] like Figure 5 As shown, the first busbar 70 is arranged in parallel with the second busbar 100. This helps to ensure the compactness of the high-voltage distribution box.
[0050] It should be noted that in the present application, the number of positive electrode interfaces 20 is equal to the number of negative electrode interfaces 30, wherein the number of positive electrode interfaces 20 penetrated on the first cavity wall 111 is equal to the number of negative electrode interfaces 30 penetrated on the first cavity wall 111; and / or, the number of positive electrode interfaces 20 penetrated on the second cavity wall 112 is equal to the number of negative electrode interfaces 30 penetrated on the second cavity wall 112.
[0051] like Figure 3 and Figure 4 As shown, the high-voltage distribution box also includes a plurality of fuses 300 and a plurality of insulating columns 400, wherein the first ends of the plurality of fuses 300 are respectively electrically connected to the positive electrode interfaces 20 provided on the second cavity wall 112; the plurality of insulating columns 400 are protrudingly provided on the second side wall 42 in the thickness direction of the insulating support plate 40, and the second ends of the plurality of fuses 300 are supported and provided on the corresponding insulating columns 400. In this way, the provision of the fuses 300 plays a role in short-circuit overcurrent protection for the line, and the provision of the insulating columns 400 plays a role in supporting the fuses 300.
[0052] like Figures 1 to 4As shown, the high-voltage distribution box further includes a relay 500 and a high-voltage detection interface 600, wherein the relay 500 is arranged on the second side wall surface 42 in the thickness direction of the insulating support plate 40; the high-voltage detection interface 600 is penetrated on the second cavity wall surface 112 of the accommodating cavity, and the high-voltage detection interface 600 located on one side of the accommodating cavity is electrically connected to the relay 500. In this way, the arrangement of the relay 500 plays a role in opening and closing the line between the high-voltage distribution box and each electrical device.
[0053] like Figure 2 and Figure 3 As shown, the high-voltage distribution box also includes a charging input interface 700, and the charging input interface 700 is disposed on the second cavity wall 112 of the accommodating cavity.
[0054] Example 2
[0055] This embodiment provides an aircraft, including a high-voltage distribution box, and the high-voltage distribution box is the high-voltage distribution box described above and below.
[0056] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:
[0057] 1. Converge four power inputs and output seven power to various electrical equipment.
[0058] 2. The insulation column 400 used has good insulation performance, high strength grade and relatively low price.
[0059] 3. ABS is used as the first busbar 70 and the second busbar 100, which has low cost and good insulation performance.
[0060] 4. Use T2 copper as the conductive material to increase the conductivity and heat dissipation capabilities.
[0061] 5. The positive and negative electrodes (specifically at least the first bus assembly 50 and the second bus assembly 60) are separated by upper and lower layers, thereby increasing safety and reliability.
[0062] Obviously, the above described embodiments are only a part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, ordinary technicians in this field can make other different forms of changes or modifications without creative work, which should fall within the scope of protection of the utility model.
Claims
1. A high voltage distribution box, characterized in that: include: A box body (10), wherein the box body (10) has a receiving cavity; A plurality of positive electrode interfaces (20), wherein some of the positive electrode interfaces (20) are arranged on a first cavity wall surface (111) of the accommodating cavity, and the remaining positive electrode interfaces (20) are arranged on a second cavity wall surface (112) of the accommodating cavity; A plurality of negative electrode interfaces (30), wherein some of the negative electrode interfaces (30) are arranged on a first cavity wall surface (111) of the accommodating cavity, and the remaining negative electrode interfaces (30) are arranged on a second cavity wall surface (112) of the accommodating cavity; The positive electrode interfaces (20) located on one side of the accommodating cavity are connected in series in sequence, and the negative electrode interfaces (30) located on one side of the accommodating cavity are connected in series in sequence; An insulating support plate (40), the insulating support plate (40) being arranged in the accommodating cavity, and two sides of the insulating support plate (40) being respectively connected to a third cavity wall surface (113) and a fourth cavity wall surface (114) of the accommodating cavity; The plurality of positive electrode interfaces (20) are located on one side of the thickness direction of the insulating support plate (40), and the plurality of negative electrode interfaces (30) are located on the other side of the thickness direction of the insulating support plate (40).
2. The high voltage distribution box according to claim 1, characterized in that: The first cavity wall surface (111) and the second cavity wall surface (112) are arranged opposite to each other, and the third cavity wall surface (113) and the fourth cavity wall surface (114) are arranged opposite to each other.
3. The high voltage distribution box according to claim 1, characterized in that: The positive electrode interfaces (20) located on one side of the accommodating cavity are connected in series in sequence via a first bus assembly (50), and the negative electrode interfaces (30) located on one side of the accommodating cavity are connected in series in sequence via a second bus assembly (60), and at least the insulating support plate (40) is used to separate the first bus assembly (50) and the second bus assembly (60).
4. The high voltage distribution box according to claim 3, characterized in that: The first confluence assembly (50) comprises: Two first bus bars (51), wherein the first end of the first of the two first bus bars (51) is used to electrically connect to the positive electrode interface (20) penetrated on the first cavity wall (111), the second end of the first of the first bus bars (51) is electrically connected to the second of the first bus bars (51) through a first conductive column (52), and the second of the first bus bars (51) is used to electrically connect to the positive electrode interface (20) penetrated on the second cavity wall (112).
5. The high voltage distribution box according to claim 4, characterized in that: The first first bus bar (51) is L-shaped, and the second first bus bar (51) is straight-line-shaped.
6. The high voltage distribution box according to claim 3, characterized in that: The second confluence assembly (60) comprises: Two second bus bars (61), wherein the first end of the first second bus bar (61) of the two second bus bars (61) is used to be electrically connected to the negative electrode interface (30) penetrated through the first cavity wall (111), the second end of the first second bus bar (61) is electrically connected to the second second bus bar (61), and the second second bus bar (61) is used to be electrically connected to the negative electrode interface (30) penetrated through the second cavity wall (112).
7. The high voltage distribution box according to claim 3, characterized in that: The high voltage distribution box also includes: A first busbar (70), the first busbar (70) being arranged on a first side wall surface (41) in a thickness direction of the insulating support plate (40), and the first busbar (70) being electrically connected to the first busbar assembly (50) via a second conductive column (80); a plurality of third conductive pillars (90), wherein first ends of the plurality of third conductive pillars (90) are all electrically connected to the first bus bar (70); a second busbar (100), the second busbar (100) being arranged on a first side wall surface (41) in a thickness direction of the insulating support plate (40), and the second ends of the plurality of third conductive pillars (90) are all electrically connected to the second busbar (100); A plurality of power supply interfaces (200), wherein the plurality of power supply interfaces (200) are arranged on a first cavity wall (111) of the accommodating cavity, and each of the power supply interfaces (200) located on one side of the accommodating cavity is electrically connected to the second bus (100).
8. The high voltage distribution box according to claim 7, characterized in that: The second conductive column (80) is arranged on a second side wall surface (42) in the thickness direction of the insulating support plate (40).
9. The high voltage distribution box according to claim 7, characterized in that: The first busbar (70) and the second busbar (100) are arranged in parallel.
10. The high voltage distribution box according to any one of claims 1 to 9, characterized in that: The number of the positive electrode interfaces (20) is equal to the number of the negative electrode interfaces (30), wherein: The number of the positive electrode interfaces (20) provided on the first cavity wall surface (111) is equal to the number of the negative electrode interfaces (30) provided on the first cavity wall surface (111); and / or, The number of the positive electrode interfaces (20) penetrated on the second cavity wall surface (112) is equal to the number of the negative electrode interfaces (30) penetrated on the second cavity wall surface (112).
11. The high voltage distribution box according to any one of claims 1 to 9, characterized in that: The high voltage distribution box also includes: A plurality of fuses (300), wherein first ends of the plurality of fuses (300) are respectively electrically connected to the positive electrode interfaces (20) penetrating the wall surface (112) of the second cavity; A plurality of insulating columns (400) are provided, wherein the plurality of insulating columns (400) are protrudingly arranged on a second side wall surface (42) in the thickness direction of the insulating support plate (40), and the second ends of the plurality of fuses (300) are supported and arranged on corresponding insulating columns (400).
12. The high voltage distribution box according to any one of claims 1 to 9, characterized in that: The high voltage distribution box also includes: A relay (500), wherein the relay (500) is arranged on a second side wall surface (42) in a thickness direction of the insulating support plate (40); A high-voltage detection interface (600), the high-voltage detection interface (600) being arranged on a second cavity wall surface (112) of the accommodating cavity, and the high-voltage detection interface (600) located on one side of the accommodating cavity being electrically connected to the relay (500).
13. The high voltage distribution box according to any one of claims 1 to 9, characterized in that: The high voltage distribution box also includes: A charging input interface (700), the charging input interface (700) being arranged on the second cavity wall surface (112) of the accommodating cavity.
14. An aircraft, characterized in that: It comprises a high-voltage distribution box, and the high-voltage distribution box is the high-voltage distribution box according to any one of claims 1 to 13.