CN216467656U

CN216467656U - Distribution box

Info

Publication number: CN216467656U
Application number: CN202122943907.XU
Authority: CN
Inventors: 谢强强; 罗雨; 赵岚; 张喜兵; 陈宁
Original assignee: Shanghai Liangxin Electrical Co Ltd
Current assignee: Shanghai Liangxin Electrical Co Ltd
Priority date: 2021-11-26
Filing date: 2021-11-26
Publication date: 2022-05-10
Anticipated expiration: 2031-11-26

Abstract

The application provides a block terminal relates to electrical apparatus technical field, includes: the base and the upper cover of first inner chamber are formed in the lock each other, the main installation position and the optional installation position which are located in the first inner chamber are arranged on the base, the main installation position is provided with the main contactor, the main installation position and the optional installation positions are arranged on the base along the straight line direction, and when the main contactor and the optional contactor are arranged, the main contactor and the optional contactor can be arranged along the straight line direction, so that the size of the distribution box in the width direction can be effectively reduced, and the applicability of the distribution box in a long and narrow space is improved.

Description

Distribution box

Technical Field

The application relates to the technical field of electric appliances, in particular to a distribution box.

Background

With the progress of science and technology, the living standard of people is rapidly improved, new energy vehicles are rapidly developed, the high-voltage distribution box is a high-voltage distribution system applied to the new energy vehicles, and the high-voltage distribution box usually comprises a plurality of components such as fuses and contactors.

When a plurality of components such as fuses, contactors and the like are arranged on the high-voltage distribution box, the utilization rate of space in the box is poor, and the whole volume of the high-voltage distribution box is large.

SUMMERY OF THE UTILITY MODEL

An object of this application lies in, to the not enough among the above-mentioned prior art, provides a distribution box to improve space utilization in the distribution box, reduce the distribution box volume.

In order to achieve the above purpose, the technical solutions adopted in the embodiments of the present application are as follows:

in one aspect of the embodiments of the present application, a distribution box is provided, including: the mutual lock forms base and upper cover of first inner chamber, is provided with the main installation position that is located first inner chamber and the optional installation position that is used for installing optional contactor on the base, is provided with main contactor at main installation position, and optional installation position includes a plurality ofly, and main installation position and a plurality of optional installation position are arranged in the base along the straight line direction.

Optionally, the height of the main contactor in the direction from the base to the upper cover is greater than the height of the optional contactor in the direction from the base to the upper cover, and a fuse connected with the main contactor and the optional contactor to form a conductive loop is arranged between the optional installation position and the upper cover.

Optionally, an optional contactor is further included, and the fuse is located between the optional contactor and the upper cover.

Optionally, the number of the selectable mounting positions is greater than or equal to the number of the selectable contactors.

Optionally, the plurality of optional installation positions are located on one side of the main installation position, or the plurality of optional installation positions are respectively located on two opposite sides of the main installation position.

Optionally, the main mounting position is a groove or a through hole arranged on the base; the optional mounting position is a groove or a through hole arranged on the base.

Optionally, still including electrically conductive piece, main contactor and optional contactor are connected with the fuse through electrically conductive piece respectively, and the laminating of electrically conductive piece sets up in the outer wall of main contactor and optional contactor.

Optionally, the base includes the bottom and forms the pedestal of first inner chamber with the upper cover lock, and one side lock that bottom and pedestal deviate from the upper cover forms the second inner chamber, is provided with the circuit board in the second inner chamber, and the circuit board is connected with main contactor and optional contactor electricity respectively.

Optionally, a high-voltage signal detection port and a low-voltage signal control port for connecting with the controller are further provided on the circuit board.

Optionally, the automatic charging system further comprises an optional resistor arranged on the circuit board, and the optional resistor is connected in series with one optional contactor to form a pre-charging loop.

The beneficial effect of this application includes:

the application provides a distribution box, includes: the mutual lock forms base and upper cover of first inner chamber, be provided with the main installation position that is located first inner chamber and the optional installation position that is used for installing optional contactor on the base, be provided with main contactor at main installation position, main installation position and a plurality of optional installation position are arranged in the base along rectilinear direction, when setting up main contactor and optional contactor, also can arrange along the straight line equally to can effectively reduce the size of block terminal in width direction, improve the suitability of block terminal in long and narrow space.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a schematic structural diagram of a distribution box according to an embodiment of the present disclosure;

fig. 2 is an exploded view of a distribution box according to an embodiment of the present disclosure;

fig. 3 is one of schematic arrangements of a fuse, a main contactor, and an optional contactor of a distribution box according to an embodiment of the present disclosure;

fig. 4 is a second schematic diagram illustrating the arrangement of the fuse, the main contactor and the optional contactor of the distribution box according to the embodiment of the present application;

fig. 5 is a schematic layout of a main contactor and an optional contactor of a distribution box according to an embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of a base of a distribution box according to an embodiment of the present disclosure;

fig. 7 is a schematic structural diagram of an alternative contactor and a circuit board of a distribution box according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of a circuit board, an optional contactor and a main contactor of a distribution box according to an embodiment of the present application;

fig. 9 is one of schematic structural diagrams of a first copper bar of a distribution box according to an embodiment of the present application;

fig. 10 is a second schematic structural view of a first copper bar of a distribution box according to an embodiment of the present disclosure;

fig. 11 is a schematic structural diagram of a main contactor of a distribution box according to an embodiment of the present application.

Icon: 10-a distribution box; 100-an upper cover; 200-a base; 210-a seat body; 211-a first mounting location; 212-second installation site; 213-third mounting location; 214-fourth installation site; 215-fifth installation site; 216-sixth installation location; 220-a bottom cover; 221-buckling; 300-a main contactor; 310-a first main contactor; 311-detection signal lines; 312-a pin; 320-a second main contactor; 330-a third main contactor; 400-optional contactor; 410-a first optional contactor; 420-a second optional contactor; 430-a third optional contactor; 500-a circuit board; 510-high voltage signal detection port; 520-low voltage signal control port; 530-optional resistance; 600-a fuse; 710-a second copper bar; 720-screws; 730-first copper bar.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. It should be noted that, in case of conflict, various features of the embodiments of the present application may be combined with each other, and the combined embodiments are still within the scope of the present application.

In the description of the present application, it should be noted that the terms "left", "right", "inside", "outside", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing and simplifying the description, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 application can be understood in a specific case by those of ordinary skill in the art.

In one aspect of the embodiments of the present application, as shown in fig. 1 and 2, there is provided a distribution box 10, including: a base 200 and an upper cover 100, the upper cover 100 is snapped on the base 200 to form a first inner cavity between the base 200 and the upper cover 100. A main installation position and an optional installation position are arranged on the base 200, wherein the main installation position and the optional installation position are both located in the first inner cavity, the main contactor 300 is arranged on the main installation position, and the optional installation position is used for installing the optional contactor 400, in other words, the optional contactor 400 can be correspondingly installed or not installed on the optional installation position according to requirements, therefore, in different embodiments, the number of the optional contactors 400 can correspond to the number of the optional installation positions (i.e. the optional contactors 400 are installed on all the optional installation positions), or the number of the optional installation positions can be larger than the number of the optional contactors 400 (i.e. the optional contactors 400 are installed on part of the optional installation positions, and the optional contactors 400 are not installed on part of the optional installation positions), or the optional contactors 400 are not installed on all the optional installation positions, so that, under the condition that the mold of the power distribution box 10 is determined, a plurality of conductive loops are formed by arranging the optional contactors 400 with different numbers in the optional installation positions and the main contactor 300, so that various power distribution schemes are realized, and the power distribution requirements of different new energy vehicles are met. In other words, the distribution box 10 of the present application can selectively mount different numbers of optional contactors 400 at optional mounting positions under one type of mold to implement multiple distribution schemes, thereby avoiding the need for providing different distribution box 10 molds according to different new energy vehicles in the existing distribution box 10. In some embodiments, the main contactor 300 and the optional contactor 400 may be contactor body portions without a housing.

Referring to fig. 3, 4 and 6, the optional installation sites include a plurality of main installation sites, the number of the main installation sites may be one or more, the plurality of optional installation sites and the main installation sites are arranged on the base 200 along a straight line, that is, arranged along the length direction c of the base 200, and the installation sides of the installation sites are all located at the same side of the base 200, for example, as shown in fig. 6, the first to sixth installation sites are arranged on the base 200 in a straight line, so that when the main contactor 300 and the optional contactor 400 are arranged, the same arrangement is also performed along a straight line, thereby effectively reducing the size of the distribution box in the width direction b, improving the applicability of the distribution box in a narrow space, and simultaneously, the terminals of the main contactor 300 and the optional contactor 400 arranged along a straight line can be distributed on opposite sides of the distribution box in the width direction b, facilitating load wiring, and effectively avoiding the problem that the contactors interfere with each other in different distribution schemes, the convenience and the flexibility of the contactors with different sizes in installation positions are improved.

Optionally, the height of the main contactor 300 in the direction a from the base 200 to the cover 100 is greater than the height of the optional contactor 400 in the direction a from the base 200 to the cover 100, that is, in the distribution box 10, as shown in fig. 5, after the main contactor 300 is installed in the main installation position and the optional contactor 400 is installed in the optional installation position, a height difference is formed between the main contactor 300 and the optional contactor 400, and an accommodating space is left between the optional installation position or the optional contactor 400 and the cover 100 due to the height difference in the first inner cavity, therefore, the fuse 600 may be disposed in the accommodating space formed between the optional installation position or the optional contactor 400 and the cover 100, so that the fuse 600 may be disposed by fully utilizing the accommodating space, thereby improving the space utilization rate of the first inner cavity, facilitating to reduce the overall volume of the distribution box 10, and at the same time, because the fuse 600 is located between the optional installation position or the optional contactor 400 and the cover 100, therefore, when the fuse 600 needs to be maintained, the maintenance operation of the fuse 600 can be performed only by opening the upper cover 100, which effectively improves the convenience of the maintenance of the fuse 600.

When the optional contactor 400 is provided in the optional installation site, an accommodation space is formed between the optional contactor 400 and the upper cover 100, and then the fuse 600 may be disposed in the accommodation space, so that a stacked structure of the optional contactor 400 and the fuse 600 as shown in fig. 3 may be formed.

In different power distribution schemes, the main contactor 300 may form a conductive loop alone; the optional contactor 400 may form a conductive loop alone; the main contactor 300 may also be connected in parallel with the optional contactor 400 to form a conductive loop. When the three circuits are connected, as shown in fig. 3, a first copper bar 730 may be introduced to connect the contactors, the first copper bar 730 may be one of the conductive pieces, and the conductive piece may also be a first silver bar (silver conductive bar), and so on.

When the fuse 600 is arranged, the fuse 600 can be respectively connected with the main contactor 300 and the optional contactor 400 to form a conductive loop, and in different power distribution schemes, the number of the fuse 600 can be adaptively changed, for example, in the three loops, the fuse 600 can also be selectively connected in series, for example, the main contactor 300 is connected with the fuse 600 in series to form a conductive loop; the optional contactor 400 is connected in series with the fuse 600 to form a conductive loop; the main contactor 300 is connected in series with the fuse 600 and then connected in parallel with the optional contactor 400 to form a conductive loop; the optional contactor 400 is connected in series with the fuse 600 and then connected in parallel with the main contactor 300 to form a conductive loop. In this way, each circuit can be effectively protected by the fuse 600.

In some embodiments, as shown in fig. 1 and fig. 2, in order to electrically connect the distribution box 10 to an external device, the connection positions of the main contactor 300, the selectable contactor 400, and the fuse 600 may be respectively connected to one end of the corresponding second copper bar 710, that is, at least one second copper bar 710 corresponds to each main contactor 300, at least one second copper bar 710 corresponds to each selectable contactor 400, at least one second copper bar 710 corresponds to each fuse 600, and the other end of each second copper bar 710 extends out of the distribution box 10 to form a connection terminal, so as to facilitate external access to a load and form a conductive loop. As shown in fig. 1, 2 and 3, the end of the second copper bar 710 extending out of the distribution box 10 may form a terminal in cooperation with a screw 720.

In some embodiments, the inlet end of the loop formed by the main contactor 300 may be connected to a battery of the new energy vehicle, and the outlet end may be connected to a capacitor of the new energy vehicle. In some embodiments, the inlet end of the loop formed by the optional contactor 400 may be connected to a load such as a pump, an air conditioner, and a light of the new energy vehicle.

In some embodiments, the fuse 600 may be located in an accommodation space between an optional installation site where the optional contactor 400 is not installed and the upper cover 100. In some embodiments, as shown in fig. 3 and 4, an optional contactor 400 is mounted on an optional mounting location, and the fuse 600 may be located in a receiving space between the optional contactor 400 and the upper cover 100 on the optional mounting location.

Optionally, as shown in fig. 6, a first installation site 211, a second installation site 212, a third installation site 213, a fourth installation site 214, a fifth installation site 215, and a sixth installation site 216 are disposed on the base 200, and different installation sites can be reasonably selected as a main installation site and an optional installation site according to different power distribution requirements, so as to achieve different power distribution requirements, for example, as shown in fig. 3 and 5, the first installation site 211, the second installation site 212, and the third installation site 213 are all used as main installation sites, the first main contactor 310 is disposed in the first installation site 211, the second main contactor 320 is disposed in the second installation site 212, the third main contactor 330 is disposed in the third installation site 213, and the fourth installation site 214, the fifth installation site 215, and the sixth installation site 216 are used as optional installation sites, the first optional contactor 410 is disposed in the fourth installation site 214, the second optional contactor 420 is disposed in the fifth installation site 215, and the optional contactor 420 is disposed in the fourth installation site 215, The third optional contactor 430 is disposed in the sixth installation site 216, and at this time, one or more fuses 600 may be disposed in the accommodation space between the optional contactor 400 disposed in the fourth installation site 214, the fifth installation site 215, and the sixth installation site 216 and the upper cover 100; for example, in another embodiment, as shown in fig. 4, the second installation site 212 and the third installation site 213 are both used as main installation sites, the second main contactor 320 and the third main contactor 330 are arranged in the second installation site 212, the first installation site 211, the fourth installation site 214, the fifth installation site 215 and the sixth installation site 216 are used as optional installation sites, the third optional contactor 430 is arranged in the first installation site 211, the first optional contactor 410 is arranged in the fourth installation site 214, the second optional contactor 420 is arranged in the fifth installation site 215, and the optional contactor 400 is not arranged in the sixth installation site 216, so that one or more fuses 600 may be arranged in the accommodating space between the optional contactor 400 arranged in the first installation site 211, the fourth installation site 214 and the fifth installation site 215 and the upper cover 100.

Optionally, the number of the optional installation locations is equal to the number of the optional contactors 400, for example, as shown in fig. 3 and 6, the optional installation locations are three

installation locations

214, 215, and 216, and the optional contactors 400 are three

optional contactors

410, 420, and 430. In other embodiments, the number may be correspondingly modified, such as four for the optional mounting locations and four for the optional contactor 400, or five for the optional mounting locations and five for the optional contactor 400, etc.

Optionally, the number of the optional installation locations is greater than the number of the optional contactors 400, for example, as shown in fig. 4 and 6, the optional installation locations are four

installation locations

211, 214, 215, and 216, and the optional contactors 400 are three

optional contactors

410, 420, and 430. In other embodiments, the number of the optional mounting locations may vary, such as five, six, etc., the number of the optional contactors 400 may also vary, such as four, five, etc., and the difference between the optional mounting locations and the optional contactors 400 may also vary.

In some embodiments, as shown in fig. 3, the plurality of optional installation sites are located on the same side of the main installation site, such that when the main contactor 300 and the optional contactor 400 are installed, the optional contactor 400 is located on the left or right side of the main contactor 300, and in this case, when the fuse 600 is disposed, it may also be disposed on the left or right side of the optional installation sites.

In some embodiments, as shown in fig. 3, a plurality of optional installation sites are respectively located at opposite sides of the main installation site, so that the optional contactors 400 are located at the left or right side of the main contactor 300 when the main contactor 300 and the optional contactors 400 are installed, and at this time, the fuse 600 may be also located at the left or right side of the optional installation sites when it is installed.

Optionally, the main contactor 300 may be electrically connected to the circuit board 500 of the following embodiments, and may be connected to the circuit board 500 through the pins 312 (as shown in fig. 11) and directly attached to the circuit board 500 according to different connection manners of the main contactor and the circuit board 500, and therefore, the main mounting position may be a groove or a through hole disposed in the base 200.

When the main contactor 300 is connected to the circuit board 500 through the pin 312, the main mounting position may be a groove with an opening communicating with the first inner cavity, and in order to facilitate connection between the pin 312 and the circuit board 500, a pin 312 hole may be formed on an inner wall or a bottom wall of the groove, so as to facilitate passage of the pin 312. As shown in fig. 6, when the first installation position 211, the second installation position 212, and the third installation position are all main installation positions, the installation positions thereof may be set as grooves having openings communicated with the first inner cavity, so that the main contactor 300 may be stressed through the bottom wall and the side wall of the groove, and the installation stability of the main contactor 300 may be improved. It should be understood that, in practical use, the main contactor 300 has a large weight, and thus, when the main mounting position is a groove, the main contactor 300 can be well supported by the side wall and the bottom wall of the groove.

When the main contactor 300 is directly attached to the circuit board 500, the main mounting position may be a through hole having an opening on one side communicating with the first inner cavity, and an opening on the other side of the through hole may be communicated with the circuit board 500, so that the main contactor 300 attached to the circuit board 500 may be accommodated in the through hole through the opening of the through hole on the one side of the circuit board 500.

Optionally, the optional contactor 400 may be electrically connected to the circuit board 500 in the following embodiments, and may be divided into two modes of being connected to the circuit board 500 through the pins 312 and directly attached to the circuit board 500 according to different connection modes of the optional contactor and the circuit board 500, and therefore, the optional mounting position may be a groove or a through hole disposed in the base 200.

When the optional contactor 400 is connected to the circuit board 500 through the pins 312, the optional mounting position may be a groove with an opening communicated with the first inner cavity, and in order to facilitate connection between the pins 312 and the circuit board 500, holes for the pins 312 may be formed on an inner wall or a bottom wall of the groove, so as to facilitate passage of the pins 312. As shown in fig. 6, when the first mounting position 211 and the fourth mounting position 214 are both optional mounting positions, the mounting positions thereof may be set as grooves having openings communicated with the first inner cavity, so that the optional contactor 400 may be stressed through the bottom wall and the side wall of the groove, and the mounting stability of the optional contactor 400 is improved.

When the optional contactor 400 is directly mounted on the circuit board 500, as shown in fig. 6, the optional mounting position may also be a through hole having an opening on one side communicated with the first inner cavity, and an opening on the other side of the through hole is communicated with the circuit board 500, so that the optional contactor 400 mounted on the circuit board 500 can be accommodated in the through hole through the opening of the through hole on one side of the circuit board 500.

In some embodiments, as shown in fig. 6, adjacent installation sites may be separated by a wall of a hole or a wall of a groove or a partition.

Optionally, the distribution box 10 further includes conductors, and as described above, the main contactor 300 and the optional contactor 400 may be connected to the fuse 600 through the conductors, respectively, and different distribution schemes may be implemented by changing the shapes of the conductors, thereby further increasing the diversity of the distribution schemes. The conductive member may be attached to the outer walls of the main contactor 300 and the optional contactor 400, so that the occupied space of the conductive member may be effectively saved.

In some embodiments, as shown in fig. 3, 4 and 8, the conductive member may be a first copper bar 730, and a plurality of conductive loops are formed by arranging the first copper bar 730 in different forms. As shown in fig. 9, the first copper bar 730 includes six wiring positions, and when disposed, the first copper bar 730 may include two connected sections, a first section extending along the upper wall surface of the contactor, and a second section extending along the side wall of the contactor, as shown in fig. 10, the first copper bar 730 includes three wiring positions, which may extend only along the upper wall surface of the contactor.

Optionally, as shown in fig. 2, the distribution box 10 further includes a circuit board 500, the base 200 includes a bottom cover 220 and a base body 210, two opposite sides of the base body 210 are respectively fastened with the upper cover 100 and the bottom cover 220, one side of the base body 210 is fastened with the upper cover 100 to form a first inner cavity, the other side of the base body 210 is fastened with the bottom cover 220 to form a second inner cavity, the circuit board 500 is located in the second inner cavity, and the circuit board 500 located in the second inner cavity is electrically connected to the main contactor 300 and the optional contactor 400 located in the first inner cavity respectively. It should be noted that the connection modes of the main contactor 300 and the optional contactor 400 and the circuit board 500 may be the two types described above, and in actual installation, the connection modes may be selected reasonably according to needs. In some embodiments, as shown in fig. 1, the connection between the base 210 and the bottom cover 220 may be a snap 221 connection.

Optionally, as shown in fig. 7, a high-voltage signal detection port 510 and a low-voltage signal control port 520 are further disposed on the circuit board 500, the high-voltage signal detection port 510 and the low-voltage signal control port 520 may be respectively externally connected with a controller, and the mode of externally connecting the controller may be plug-in, that is, the high-voltage signal detection port 510 and the low-voltage signal control port 520 are both plug-in ports. The main contactor 300 and the optional contactor 400 are electrically connected to the low-voltage signal control port 520 through the circuit board 500, so that the on-off states of the main contactor 300 and the optional contactor 400 can be controlled through the controller, thereby realizing the on-off control of the circuits in which the contactors are respectively located.

In addition, as shown in fig. 3, 4 and 8, a detection signal line 311 may be further connected to the second copper bar 710 of the main contactor 300 and/or the optional contactor 400, and the other end of the detection signal line 311 is connected to the circuit board 500 and is in signal connection with the high voltage signal detection port 510, so that the controller may detect the electrical signals of the loop where the corresponding contactor is located through the high voltage signal detection port 510 and the detection signal line 311, thereby monitoring the state of each contactor in the distribution box 10.

Optionally, as shown in fig. 7, the distribution box 10 further includes an optional resistor 530 disposed on the circuit board 500, the optional resistor 530 may be connected in series with one of the optional contactors 400 to form a pre-charging circuit, and the pre-charging circuit is connected in parallel with the main contactor 300, so as to limit a current of a circuit in which the main contactor 300 is located, and avoid damage to the main contactor 300 due to an excessive current.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A distribution box (10), comprising: base (200) and upper cover (100) of mutual lock formation first inner chamber be provided with on base (200) and be located the main installation position of first inner chamber and the optional installation position that is used for installing optional contactor (400) the main installation position is provided with main contactor (300), optional installation position is including a plurality of, main installation position and a plurality of optional installation position along the straight line direction arrange in base (200).

2. The distribution box (10) according to claim 1, wherein the main contactor (300) has a height in the direction from the base (200) to the upper cover (100) greater than a height of the optional contactor (400) in the direction from the base (200) to the upper cover (100), and a fuse (600) connected to the main contactor (300) and the optional contactor (400) respectively to form a conductive loop is provided between the optional mounting location and the upper cover (100).

3. The distribution box (10) of claim 2, further comprising an optional contactor (400), the fuse (600) being located between the optional contactor (400) and the upper cover (100).

4. The distribution box (10) of claim 1, wherein the number of selectable mounting locations is greater than or equal to the number of selectable contactors (400).

5. The distribution box (10) of claim 1, wherein a plurality of said optional mounting sites are located on one side of said main mounting site, or wherein a plurality of said optional mounting sites are located on opposite sides of said main mounting site.

6. The distribution box (10) according to claim 1, wherein said main mounting location is a recess or through hole provided in said base (200); the optional mounting positions are grooves or through holes arranged on the base (200).

7. The distribution box (10) of claim 2, further comprising an electrically conductive member, wherein the main contactor (300) and the optional contactor (400) are respectively connected to the fuse (600) through the electrically conductive member, and the electrically conductive member is attached to the outer walls of the main contactor (300) and the optional contactor (400).

8. The distribution box (10) according to any of claims 1 to 7, wherein the base (200) comprises a bottom cover (220) and a base body (210) fastened with the upper cover (100) to form the first inner cavity, the bottom cover (220) is fastened with a side of the base body (210) facing away from the upper cover (100) to form a second inner cavity, a circuit board (500) is disposed in the second inner cavity, and the circuit board (500) is electrically connected with the main contactor (300) and the optional contactor (400), respectively.

9. The distribution box (10) according to claim 8, wherein a high voltage signal detection port (510) and a low voltage signal control port (520) for connection with a controller are further provided on the wiring board (500).

10. The distribution box (10) of claim 8, further comprising an optional resistor (530) disposed on the circuit board (500), the optional resistor (530) being connected in series with one of the optional contactors (400) to form a pre-charge circuit.