CN218498630U

CN218498630U - Low-voltage distribution box

Info

Publication number: CN218498630U
Application number: CN202222480197.6U
Authority: CN
Inventors: 黄小宝; 林�源
Original assignee: Shenzhen Busbar Sci Tech Development Co Ltd
Current assignee: Shenzhen Busbar Sci Tech Development Co Ltd
Priority date: 2022-09-19
Filing date: 2022-09-19
Publication date: 2023-02-17
Anticipated expiration: 2032-09-19

Abstract

The utility model provides a low voltage distribution box, including box, input conductor and output connector, the input conductor is located on the box, the input conductor is including being located electrically conductive copper bar in the box, the output connector is fixed on the box, the output connector passes through the output conductor and connects on the electrically conductive copper bar. The utility model provides an input conductor portion that lies in the box in the low voltage distribution box is electrically conductive copper bar, compares the flexible printed circuit board, and the performance such as heat dissipation of electrically conductive copper bar is superior to the flexible printed circuit board to make the current-carrying capacity of electrically conductive copper bar be greater than the flexible printed circuit board of uniform cross-section. Under the same requirement of the through-current capacity, the required cross-sectional area of the conductive copper bar is smaller, the occupied space of the conductive copper bar is also smaller, and the size of the box body can be naturally reduced along with the cross-sectional area, so that the size and the quality of the box body are effectively reduced.

Description

Low-voltage distribution box

Technical Field

The utility model belongs to the technical field of automobile-used low voltage power supply system, a low pressure block terminal is related to.

Background

The low-voltage power supply system plays a very important role in the normal running of the electric automobile, and the low-voltage power supply is used for converting the electric energy of a power battery into a 12V low-voltage power supply through DC/DC (direct current/direct current) and providing a working power supply for a vehicle-mounted 12V storage battery and vehicle body electrical parts. The electric parts of the vehicle body comprise low-voltage electric parts such as lamplight, a central control door lock, an information entertainment system, an electric door and a window. The low-voltage distribution box is an important component of a low-voltage power supply system and plays a role in power distribution.

The input conductors in conventional low voltage distribution boxes typically employ flexible wires (e.g., copper wires) to which the output connectors are connected. For vehicles with fewer low-voltage electric components, the current used is smaller, and the flexible wire with a smaller section can meet the use requirement.

In order to improve the use comfort, safety and the like of the new energy automobile, the number of automobile body electrical parts of the new energy automobile is more and more, the use current of a low-voltage power supply system is gradually increased, and the through-current capacity of a low-voltage distribution box needs to be improved in order to meet the use safety. Therefore, the input conductor in the low-voltage distribution box needs to select a flexible wire with a larger cross section to meet the through-current requirement. In addition, in order to ensure that the flexible conductors and the box body as well as the flexible conductors have enough insulation gaps and creepage distances, the size of the box body needs to be increased, so that the overall size of the low-voltage distribution box is large, the overall mass of the low-voltage distribution box is large, and subsequent installation is not facilitated.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: to current low voltage distribution box, for guaranteeing to have sufficient insulation clearance and creepage distance between pigtail and the box and between the pigtail, the size of box needs increase thereupon, leads to the great, the great problem of whole quality of whole size of low voltage distribution box, provides a low voltage distribution box.

In order to solve the technical problem, the embodiment of the utility model provides a low voltage distribution box, including box, input conductor and output connector, the input conductor is located on the box, the input conductor is including being located electrically conductive copper bar in the box, the output connector is fixed on the box, the output connector passes through the output conductor and connects on the electrically conductive copper bar.

Optionally, the conductive copper bars are bent and extended in the box body.

Optionally, an input conductor inlet and an input conductor outlet are arranged on the box body, and the input conductor enters from the input conductor inlet and passes through from the input conductor outlet; the input conductor inlet and the input conductor outlet are respectively arranged on two opposite sides of the box body.

Optionally, the box body is of a square structure, the input conductor inlet and the input conductor outlet are arranged at intervals along the left-right direction, so that the input conductor inlet and the input conductor outlet are arranged at diagonal positions of the box body.

Optionally, there are at least two output connectors, at least two output connectors are located on the same side of the box body, and the at least two output connectors and the inlet end or the outlet end of the input conductor are located on the same side of the box body.

Optionally, the output conductor is an output harness, a threaded hole is formed in the conductive copper bar, one end of the output harness is connected to the corresponding output connector, and a wiring nose connected to the threaded hole of the conductive copper bar is arranged at the other end of the output harness.

Optionally, an insulating support is arranged at the bottom of the box body, the conductive copper bar is erected and fixed on the insulating support, and the output wiring harness penetrates through the conductive copper bar and the bottom of the box body.

Optionally, the bottom of the box body is provided with a harness fixing structure for restricting and arranging the output harness.

Optionally, an output connector mounting protrusion is arranged in a protruding manner outside the box body, and the output connector is fixed on the corresponding output connector mounting protrusion.

Optionally, the input conductor further includes an input harness located at two ends of the conductive copper bar, and a connection lug for being fixedly arranged on the conductive copper bar is arranged at a corresponding end of the input harness; PG heads are respectively arranged on the box body corresponding to the input wire harnesses at the two ends, and the corresponding input wire harnesses are fixed in the corresponding PG heads.

The embodiment of the utility model provides an among the low voltage distribution box, the input conductor portion that is located the box is electrically conductive copper bar, compares the flexible printed circuit board, and the performance such as heat dissipation of electrically conductive copper bar is superior to the flexible printed circuit board to make the current-carrying capacity of electrically conductive copper bar be greater than the flexible printed circuit board of uniform cross-section. Under the same current capacity requirement, the required cross sectional area of the conductive copper bar is smaller, the space occupied by the conductive copper bar is also smaller, and the size of the box body can be naturally reduced, so that the size and the quality of the box body are effectively reduced, and the installation and the subsequent assembly on a new energy automobile are facilitated.

Drawings

Fig. 1 is a top view of a low voltage distribution box provided by the present invention (the box cover is not shown in the figure);

fig. 2 is a perspective view of the low voltage distribution box provided by the present invention (the box cover and the bolts at the connection locations are not shown in the figure);

fig. 3 is a rear view of the low voltage distribution box provided by the present invention;

fig. 4 is a front view of a low voltage distribution box provided by the present invention;

fig. 5 is a perspective view of a box body in the low-voltage distribution box provided by the present invention;

fig. 6 is a rear view of the box in the low voltage distribution box provided by the present invention;

fig. 7 is a front view of a box in a low voltage distribution box provided by the present invention.

Wherein, 1, a box body; 2. an interlocking connector; 3. a PG head; 4. inputting a wire harness; 5. a fuse; 6. a relay; 7. a latch mounting seat; 8. outputting the wire harness; 9. threaded holes of the box body; 10. a conductive copper bar; 11. an insulating support mounting seat; 12. a relay mounting base; 13. a box body mounting seat; 14. an output connector mounting boss; 15. an interlock connector port; 16. an input conductor inlet; 17. an input conductor outlet; 18. an output connector port; 19. a wiring lug; 20. an insulating support; 21. an output connector; 22. copper bar screw hole.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to further explain the present invention in detail. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The utility model provides a specific embodiment 1 of low pressure block terminal:

as shown in fig. 1 to 7, the low voltage distribution box is applied to a new energy vehicle, and belongs to a part of a low voltage power supply system, and is used for distributing low voltage power to electric components. The low-voltage distribution box mainly comprises a box body 1, an input conductor, a fuse 5, a relay 6 and an output connector 21, wherein the input conductor is connected to a battery of the new energy automobile when in use and takes electricity from the battery; the low-voltage electricity-consuming parts take electricity from the output connector 21.

The low-voltage distribution box comprises a box body 1 and a box cover (not shown in the figure) buckled at the top of the box body 1, wherein the box body 1 and the box cover can form a closed cavity, and structures such as a conductive copper bar 10, a fuse 5, a relay 6 and the like are arranged in the cavity. For installing the box cover, a box body threaded hole 9 is formed in the top of the box body 1, and the box body can be fastened through a bolt during assembly.

The structure of the box body 1 is as shown in fig. 5 to 7, where the box body 1 is a square structure, one side wall of the box body 1 is provided with an input conductor inlet 16, and the other opposite side wall is provided with an input conductor outlet 17, for convenience of description, it is defined in this embodiment that the input conductor inlet 16 and the input conductor outlet 17 are respectively located on the front and rear side walls of the box body 1, and then the direction perpendicular to the front and rear direction and the top and bottom direction is the left and right direction. As can be seen from fig. 5, the input conductor inlet 16 and the input conductor outlet 17 are arranged not only opposite to each other in the front-rear direction but also offset from each other in the left-right direction, that is, the input conductor inlet 16 and the input conductor outlet 17 are disposed at diagonal positions of the case 1. The aim at that sets up like this can make conductive copper bar 10 extend in order, avoids appearing the reciprocal condition that extends of conductive copper bar 10. The outer parts of the left side and the right side of the box body 1 are provided with box body mounting seats 13 for being mounted on a vehicle body. It should be noted that the front-back direction and the left-right direction are only directions defined for convenience of description, and are only relative concepts, and do not limit the installation direction of the low voltage distribution box.

As shown in fig. 5 and 6, an interlock connector opening 15 is further formed in the sidewall where the input conductor inlet 16 is located, and the interlock connector opening 15 is used for mounting the ground interlock connector 2. The side wall where the input conductor outlet 17 is located is further provided with output connector ports 18, the output connector ports 18 are used for installing output connectors 21, the number of the output connector ports 18 is six, and the output connectors are arranged according to the space-saving principle during arrangement, namely, the top-bottom direction and the left-right direction are overlapped to reduce the size. Of course, the number and arrangement of the output connector ports can be adjusted according to actual needs in actual use. As shown in fig. 5, in order to facilitate the mounting of the output connector 21, an output connector mounting projection 14 is protrudingly disposed on the outside of the case 1, and an output connector opening 18 is opened on the output connector mounting projection 14. The advantage of the protruding outer portion of the output connector mounting protrusion 14 is that it is easy to process, and the output connector 21 is fixed on the output connector mounting protrusion 14 by means of bolt connection or the like. In this embodiment, each output connector 21 and each input conductor outlet 17 are located on the same side of the box 1, and the wiring is concentrated on the same side of the box 1, so that the subsequent wiring and the installation of the low-voltage distribution box on the vehicle body are facilitated.

As shown in fig. 1 and 2, the PG heads 3 are installed at the input conductor inlet 16 and the input conductor outlet 17, and the PG heads 3 have the advantages of high versatility and capability of allowing input harnesses 4 of different thicknesses to pass through and be fixed. The input conductor comprises input wiring harnesses 4 at two ends and a conductive copper bar 10 in the middle, wherein the input wiring harnesses 4 penetrate through the corresponding PG heads 3, a wiring lug 19 is fixed at one end of each input wiring harness 4, and the wiring lug 19 is fixed on the conductive copper bar 10. The wiring mode has the advantages that the requirement on the input wiring harness 4 is low, a special connector plug is not required to be equipped, only the wiring nose 19 of the input wiring harness 4 needs to be fixedly pressed on the conductive copper bar 10, and wiring is convenient.

Conductive copper bar 10 is from input conductor import 16 to input conductor export 17 "snake" shape and is buckled and extend to form five segmentations that the direction was arranged at the interval in proper order about, wherein, seted up copper bar screw hole 22 on the left and right sides and the middle segmentation, be connected with output harness 8 on the output connector 21, output harness 8's one end is connected with wiring nose 19, and wiring nose 19 passes through bolt fixed mounting on copper bar screw hole 22. The other two segments are connected with fuses 5 in series for overload protection. Wherein, a plurality of copper bar threaded holes 22 on the left side, the right side and the middle section are sequentially arranged at intervals along the direction of the conductive copper bar 10. As shown in fig. 1, a relay 6 is connected in series to the copper busbar 10. Correspondingly, as shown in fig. 5, a relay mounting seat 12 is provided at the bottom of the case 1, and the relay mounting seat 12 is used for mounting the relay 6. In actual arrangement, the positions of the fuse 5 and the relay 6 can be changed and adjusted according to design requirements.

In order to support and fix the conductive copper bar 10, an insulating support column 20 is fixed at the bottom of the box body 1, an insulating support column mounting seat 11 is arranged at the bottom of the box body 1 for mounting the insulating support column 20, the insulating support column 20 is assembled on the insulating support column mounting seat 11 in a threaded manner, and the conductive copper bar 10 is fixedly mounted on the insulating support column 20 through bolts.

As shown in fig. 1, since the copper busbar 10 is fixed on the box body 1 by the insulating support 20, so that the copper busbar 10 is overhead, the output harness 8 passes through a space between the copper busbar 10 and the bottom of the box body 1. In order to restrain and arrange the output wire harness 8, a lock catch mounting seat 7 is fixed at the bottom of the box body 1, the lock catch mounting seat 7 is used for installing a lock catch (not shown in the figure) in a threaded mode, and the lock catch can press down the output wire harness 8, so that the output wire harness 8 is restrained and arranged.

In this embodiment, the latch mounting base 7 and the latch together form a harness fixing structure that restrains the output harness 8. The output harness 8 constitutes an output conductor connecting the copper busbar 10 and the output connector 21.

The utility model discloses low voltage distribution box's embodiment 2:

the difference from the embodiment 1 is that in the embodiment 1, the input conductor includes input harnesses at two ends and a conducting copper bar in the middle, a PG head is installed on the box body, and the input harnesses pass through the PG head. In this embodiment, a switching connector is fixed on the box body, two ends of the switching connector are respectively located inside and outside the box body, one end located inside the box body is connected with the conductive copper bar, and one end located outside the box body is connected with an external input wiring harness. In other embodiments, the conductive copper bar of the input conductor directly penetrates to the outside of the box body, and the intersection position of the conductive copper bar and the box body is fixed and packaged by using insulating glue.

The utility model discloses embodiment 3 of low pressure block terminal:

the difference from embodiment 1 is that in embodiment 1, an output connector mounting projection is arranged to project from the outside of the case, and the output connector is fixed to the output connector mounting projection. In this embodiment, the output connector installation arch of the outside of box is cancelled, and the outside parallel and level of box promptly only sets up the screw hole on the box can.

The utility model discloses embodiment 4 of low pressure block terminal:

the difference from the embodiment 1 is that in the embodiment 1, the bottom of the box body is provided with a wire harness fixing structure, and the wire harness fixing structure comprises a lock catch mounting seat and a lock catch. In this embodiment, the wire harness fixing structure may be a cable tie or the like fixed to the bottom of the case.

The utility model discloses low voltage distribution box's embodiment 5:

the difference from the embodiment 1 is that in the embodiment 1, the output harness passes through the space between the conductive copper bar and the bottom of the box body, and the space of the part can be effectively utilized, so that the volume of the box body is reduced. In this embodiment, when the box was insulating material, the bottom at the box can the snap-on of copper busbar, and the output harness was passed through by copper busbar's top this moment.

The utility model discloses embodiment 6 of low pressure block terminal:

the difference with embodiment 1 is that, in embodiment 1, the output conductor is an output wire harness, and the output wire harness is provided with a wiring lug which can be connected into a corresponding threaded hole on the conductive copper bar as required. In this embodiment, the output conductor may be a copper bar, and is directly welded to the conductive copper bar of the input conductor.

The utility model discloses embodiment 7 of low pressure block terminal:

the difference from embodiment 1 is that in embodiment 1, each output connector is located on the same side of the housing as the input conductor outlet. In this embodiment, each output connector and the input conductor inlet are located on the same side of the housing. In other embodiments, the output connectors may be located on the side walls of the enclosure adjacent the input conductor inlet and output conductor outlet.

The utility model discloses embodiment 8 of low pressure block terminal:

the difference from embodiment 1 is that in embodiment 1, the input conductor inlet and the input conductor outlet are located at diagonal positions of the tank. In other embodiments, the input conductor inlet and the input conductor outlet are located on opposite sides of the housing, but are disposed directly opposite in a direction perpendicular to the spacing direction. In other embodiments, the input conductor inlet and the input conductor outlet may also be located on the same side of the housing. Of course, in actual use, the shape of the box body can be changed according to actual conditions.

The utility model discloses embodiment 9 of low pressure block terminal:

the difference from the embodiment 1 is that in the embodiment 1, the conductive copper bar is bent and extended, and the influence on the assembly caused by the overlarge unidirectional size of the box body can be avoided on the basis of the same extension length. In this embodiment, the conductive copper bar may also be a straight copper bar, which is arranged in a unidirectional extending manner.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a low voltage distribution box, its characterized in that includes box, input conductor and output connector, the input conductor is located on the box, the input conductor is including being located electrically conductive copper bar in the box, the output connector is fixed on the box, the output connector passes through the output conductor and connects on the electrically conductive copper bar.

2. The low voltage distribution box according to claim 1, wherein said copper busbar is bent and extended inside said box.

3. The low voltage distribution box of claim 2, wherein the box body has an input conductor inlet and an input conductor outlet, the input conductor entering through the input conductor inlet and exiting through the input conductor outlet; the input conductor inlet and the input conductor outlet are respectively arranged on two opposite sides of the box body.

4. The low voltage distribution box according to claim 3, wherein the box body has a square structure, and the input conductor inlets and the input conductor outlets are arranged at intervals in a left-right direction such that the input conductor inlets and the input conductor outlets are arranged at diagonal positions of the box body.

5. The low voltage distribution box according to any of claims 1 to 4, wherein there are at least two of said output connectors, at least two of said output connectors being located on a same side of said box, and at least two of said output connectors being located on a same side of said box as said input or exit ends of said input conductors.

6. The low voltage distribution box according to any one of claims 1 to 4, wherein said output conductor is an output harness, said copper busbar is provided with a threaded hole, one end of said output harness is connected to a corresponding said output connector, and the other end of said output harness is provided with a lug connected to the threaded hole of said copper busbar.

7. The low voltage distribution box according to claim 6, wherein the bottom of said box body is provided with insulating supports on which said copper busbar is mounted, said output wiring harness passing between said copper busbar and the bottom of said box body.

8. The low voltage distribution box of claim 7, wherein the bottom of the box is provided with a harness retaining structure for restraining the output harness.

9. The low voltage distribution box according to any of claims 1 to 4, wherein an output connector mounting projection is arranged projecting from an exterior of the box body, and the output connector is fixed to the corresponding output connector mounting projection.

10. The low voltage distribution box according to any one of claims 1 to 4, wherein said input conductors further comprise input harnesses located at both ends of said copper bar, said input harnesses having respective ends provided with terminal lugs for being fixed to said copper bar; PG heads are respectively arranged on the box body corresponding to the input wire harnesses at the two ends, and the corresponding input wire harnesses are fixed in the corresponding PG heads.