High-voltage box convenient to maintain

Abstract

The utility model discloses a high-voltage box convenient to maintain. The high-voltage box comprises a box body, a circuit assembly, a BMU module and a cover plate. The box body is provided with a cavity and a maintenance port communicated with the cavity, the circuit assembly is arranged in the cavity, the BMU module is arranged in the cavity, the BMU module is close to or located at the maintenance port, the BMU module is electrically connected to the circuit assembly, the cover plate is detachably connected to the box body, and the maintenance port is covered with the cover plate. The high-voltage box convenient to maintain is provided with the cover body, and the cover body is convenient to disassemble and assemble, so that the BMU module in the high-voltage box is convenient to maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of high-voltage boxes, in particular to a high-voltage box which is convenient to maintain. Background Art

[0002] In the prior art, high-voltage relays, fuses, BMU (battery management system host) and other devices are highly integrated inside the high-voltage box. Due to the limited space of the high-voltage box and the large number of integrated components, it is very troublesome to assemble, internally repair and inspect, and repair and disassemble, especially when it comes to the BMU part. Wiring and disassembly are very inconvenient. When the BMU module fails, it is usually necessary to disassemble the entire shell of the high-voltage box so that all internal modules are exposed to the outside world, and then the BMU part can be disassembled and assembled. The operation is difficult, the maintenance work is time-consuming, and the efficiency is low.

[0003] In view of this, the present utility model is proposed. Utility Model Content

[0004] The utility model provides a high-voltage box which is convenient for maintenance.

[0005] The utility model adopts the following technical solutions:

[0006] A high-voltage box convenient for maintenance, comprising:

[0007] A box body, the box body having a cavity and a maintenance port communicating with the cavity;

[0008] a circuit component, wherein the circuit component is disposed in the cavity;

[0009] A BMU module, the BMU module is disposed in the cavity, the BMU module is close to or located at the maintenance port, and the BMU module is electrically connected to the circuit assembly;

[0010] A cover plate is detachably connected to the box body and covers the maintenance port.

[0011] Optionally, the box body has a bottom plate, a top plate and a side plate connecting the bottom plate and the top plate;

[0012] The top plate, the bottom plate and the side plates enclose the cavity;

[0013] The BMU module is arranged close to the base plate;

[0014] The maintenance opening is arranged on the bottom plate.

[0015] Optionally, the BMU module is parallel to the base plate.

[0016] Optionally, a connection interface is provided on the thickness end surface of the BMU module.

[0017] Optionally, the BMU module is connected to the cover plate.

[0018] Optionally, a thread groove is provided on the cover plate;

[0019] One end of the fastener passes through the BMU module and is connected to the threaded groove, and the other end of the fastener is limited to the BMU module.

[0020] Optionally, the cover plate has a convex shell portion and a peripheral flange connected to the edge of the convex shell portion;

[0021] The peripheral flange is detachably connected to the box body, and the convex shell portion passes through the maintenance port;

[0022] A rivet nut is arranged on the convex shell portion, and the thread groove is arranged on the rivet nut.

[0023] Optionally, the rivet nuts are arranged on the four corners of the convex shell portion.

[0024] Optionally, a plurality of connection holes are provided on the peripheral flange;

[0025] One end of each of the plurality of connecting members passes through the corresponding connecting hole and is connected to the box body, and the other end of the connecting member is limited to the peripheral flange.

[0026] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are part of this application and are used to provide a further understanding of the utility model. The schematic embodiments of the utility model and their descriptions are used to explain the utility model, but do not constitute an improper limitation on the utility model. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0028] Figure 1 A schematic diagram of the internal structure of a high-voltage box that is easy to maintain provided by an embodiment of the present application is shown;

[0029] Figure 2 A schematic diagram showing the structure of the upper cover of the high-voltage box in a separated state for easy maintenance provided by an embodiment of the present application is shown;

[0030] Figure 3 for Figure 2 Another perspective of the picture.

[0031] In the figure: 1, box body; 11, bottom plate; 111, maintenance port; 12, side plate; 2, BMU module; 3, cover plate; 31, convex shell; 32, rivet nut; 33, peripheral flange; 331, connecting hole; 4, pre-charging resistor; 5, fuse; 6, electric meter; 7, relay.

[0032] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0034] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] See also Figures 1 to 3 As shown, the embodiment of the present application provides a high-voltage box that is easy to maintain, including: a box body 1, a circuit assembly, a BMU module 2 and a cover plate 3. The box body 1 has a cavity and a maintenance port 111 connected to the cavity, the circuit assembly is arranged in the cavity, the BMU module 2 is arranged in the cavity, the BMU module 2 is close to or located at the maintenance port 111, the BMU module 2 is electrically connected to the circuit assembly, and the cover plate 3 is detachably connected to the box body 1, and the cover plate 3 covers the maintenance port 111.

[0037] The high-voltage box of the present application is provided with a cover body for easy maintenance, and the cover body can be easily disassembled and assembled, which facilitates the inspection and maintenance of the BMU module 2 in the high-voltage box. In the case of very limited space in the high-voltage box, the embodiment of the present application realizes high integration while providing a BMU-specific maintenance port 111 on the box body 1, thereby realizing the convenience of disassembly and inspection and maintainability of the BMU module 2.

[0038] In some possible embodiments, the box body 1 has a bottom plate 11, a top plate, and a side plate 12 connecting the bottom plate 11 and the top plate, the top plate, the bottom plate 11, and the side plate 12 enclose the cavity, the BMU module 2 is arranged close to the bottom plate 11, and the maintenance port 111 is arranged on the bottom plate 11.

[0039] The high-voltage box provided in the embodiment of the present application improves the layout design of the BMU module 2 on the basis of the high-integration high-voltage box function. In a smaller high-voltage box space, the layout of circuit components can be completed, such as the high integration of the relay 7, fuse 5, electric meter 6 and other structures, and the BMU module 2 can be conveniently disassembled and assembled. Figure 1 As shown, it is a simple model of the high-voltage box of the present application. The circuit components in the high-voltage box include multiple fuses 5, multiple relays 7, electric meters 6, pre-charge resistors 4, copper busbars and wiring harnesses, etc. In some embodiments, MSD (manual maintenance switch) and other parts are also integrated. The connections in the high-voltage box are intricate and the space is extremely limited. The BMU module 2 is arranged at the bottom. In order to facilitate the disassembly and inspection of the BMU, a maintenance port 111 is designed at the bottom of the high-voltage box, which is directly below the BMU. When assembling, inspecting and disassembling the BMU, the high-voltage box can only remove the cover plate 3 on the maintenance port 111 to disassemble the BMU module 2 without being affected by the upper electrical components, copper busbars and wiring harnesses.

[0040] In some possible implementations, the BMU module 2 is parallel to the bottom plate 11. The BMU module 2 is roughly plate-shaped. In order to arrange the BMU module 2 in some highly integrated high-voltage boxes, the BMU module 2 can only be placed vertically, that is, the BMU module 2 is perpendicular to the bottom plate 11. In order to facilitate the plugging and unplugging of the connector, the interface of the BMU module 2 can only face upward, but there is a risk of condensed water dripping into the connector and causing a short circuit. In the embodiment of the present application, the BMU module 2 is horizontally arranged inside the box body 1, and because the BMU is located on one side of the bottom plate 11, while taking into account the convenience of plugging and unplugging the connector, it is arranged horizontally to avoid the risk of condensed water dripping into the connector.

[0041] Specifically, the BMU module 2 is roughly plate-shaped, and a connection interface is set on the thickness end surface of the BMU module 2. When replacing the BMU module 2, only the cover plate 3 of the bottom maintenance port 111 needs to be opened to take out the BMU module 2 without being affected by other parts, and the overall solution layout has a higher space utilization rate.

[0042] In some possible implementation schemes, the BMU module 2 is connected to the cover plate 3. After the cover plate 3 is removed, the BMU module 2 can be obtained, which facilitates the maintenance of the BMU module 2.

[0043] In some possible implementations, a threaded groove is provided on the cover plate 3, one end of the fastener passes through the BMU module 2 and is connected to the threaded groove, and the other end of the fastener is limited to the BMU module 2. The BMU module 2 is provided with a mounting hole on the side edge, and the fastener can be a bolt, the rod of the bolt passes through the mounting hole and is threadedly connected to the threaded groove on the cover plate 3, and the cap of the bolt is limited to the BMU module 2.

[0044] In some possible implementations, the cover plate 3 has a convex shell portion 31 and a peripheral flange 33 connected to the edge of the convex shell portion 31, the peripheral flange 33 is detachably connected to the box body 1, the convex shell portion 31 passes through the maintenance port 111, a rivet nut 32 is provided on the convex shell portion 31, and the thread groove is provided on the rivet nut 32. The convex shell portion 31 protrudes into the cavity, so that the BMU module 2 can be installed on the convex shell portion 31.

[0045] In some possible implementations, the rivet nuts 32 are disposed on the four corners of the convex shell portion 31. The four corners of the BMU module 2 can be conveniently fixed separately, which significantly improves the strength of the assembly structure.

[0046] In some possible implementations, a plurality of connection holes 331 are provided on the peripheral flange 33, and one end of each of the plurality of connectors passes through the corresponding connection hole 331 and is connected to the box body 1, and the other end of the connector is limited to the peripheral flange 33. The connector may be a screw. When disassembling the cover plate 3, each connector needs to be disassembled first.

[0047] In some possible implementations, the high-pressure box includes a sealing gasket, which is attached to the surface of the cover plate 3 and the box body 1, and covers the gap between the cover plate 3 and the box body 1, thereby improving the sealing between the cover plate 3 and the box body 1. The sealing gasket may be in a closed ring shape, extending only around the gap between the cover plate 3 and the box body 1. The sealing gasket may be attached to the cover plate 3 and the box body 1, or the sealing gasket may be compressed and arranged between the cover plate 3 and the box body 1 and around the edge of the maintenance port 111 to seal the gap between the cover plate 3 and the box body 1.

[0048] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model has been disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with this patent can make some changes or modify the technical content suggested above into an equivalent embodiment with equivalent changes without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the scope of the solution of the utility model.

Claims

1. A high-voltage box that is easy to maintain, characterized in that: include: A box body, the box body having a cavity and a maintenance port communicating with the cavity; a circuit component, wherein the circuit component is disposed in the cavity; A BMU module, the BMU module is disposed in the cavity, the BMU module is close to or located at the maintenance port, and the BMU module is electrically connected to the circuit assembly; A cover plate is detachably connected to the box body and covers the maintenance port.

2. The high-voltage box for easy maintenance according to claim 1, characterized in that: The box body comprises a bottom plate, a top plate and a side plate connecting the bottom plate and the top plate; The top plate, the bottom plate and the side plates enclose the cavity; The BMU module is arranged close to the base plate; The maintenance opening is arranged on the bottom plate.

3. The high-voltage box for easy maintenance according to claim 2, characterized in that: The BMU module is parallel to the base plate.

4. The high-voltage box for easy maintenance according to claim 3, characterized in that: A connection interface is arranged on the thickness end surface of the BMU module.

5. The high-voltage box for easy maintenance according to claim 1, characterized in that: The BMU module is connected to the cover plate.

6. The high-voltage box for easy maintenance according to claim 5, characterized in that: The cover plate is provided with a thread groove; One end of the fastener passes through the BMU module and is connected to the threaded groove, and the other end of the fastener is limited to the BMU module.

7. The high-voltage box for easy maintenance according to claim 6, characterized in that: The cover plate has a convex shell portion and a peripheral flange connected to the edge of the convex shell portion; The peripheral flange is detachably connected to the box body, and the convex shell portion passes through the maintenance port; A rivet nut is arranged on the convex shell portion, and the thread groove is arranged on the rivet nut.

8. The high-voltage box for easy maintenance according to claim 7, characterized in that: The rivet nuts are arranged on the four corners of the convex shell part.

9. The high-voltage box for easy maintenance according to claim 7, characterized in that: A plurality of connection holes are arranged on the peripheral flange; One end of each of the plurality of connecting members passes through the corresponding connecting hole and is connected to the box body, and the other end of the connecting member is limited to the peripheral flange.

10. The high-voltage box for easy maintenance according to any one of claims 1 to 9, characterized in that: A sealing gasket is included, which is attached to the surfaces of the cover plate and the box body, and covers the gap between the cover plate and the box body.

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