Central control box

Abstract

The utility model discloses a central control box, which relates to the technical field of automobile electric control and comprises a shell, a lower cover plate, a circuit board assembly, a circuit partition plate and a protective cover. Wherein the circuit board assembly is arranged in the shell, and one end of the circuit board assembly is connected with an interface on the surface of the lower cover plate; the circuit partition plate is mounted in the shell; a plurality of electrical elements are mounted on the upper surface of the circuit partition plate, and the protective cover is arranged above the plurality of electrical elements; the lower cover plate is located below the shell, and a plurality of interfaces are formed in the surface of the lower cover plate. The central control box provided by the utility model is complete in function, and compared with the conventional control box, the central control box can give an alarm in time when the fuse is fused due to the abnormality of the electric appliance while controlling more than two times of electric appliances, thereby facilitating the maintenance of workers.

Description

Technical Field

[0001] The utility model relates to the technical field of automotive electronic control, and particularly relates to a central control box. Background Art

[0002] At present, with the development of automobiles and electronic products, there are more and more electrical appliances on automobiles, and correspondingly, the number of circuits controlled and protected by the central control box also increases accordingly. The central control box is responsible for the power distribution of the whole vehicle to ensure the safe use of each electrical appliance. The quality of the central control box directly affects the performance and safety of the vehicle. At present, the number of circuits controlled by the central control box in the industry is not large, mostly in the teens, which cannot meet the use of more and more electrical appliances on the vehicle. And with the increase in the number of control circuits, installation and maintenance become more and more troublesome, affecting work efficiency. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a central control box, which has complete functions. Compared with the existing control box, while controlling more than twice the number of electrical appliances, it can also give an alarm in time when the fuse blows due to abnormal electrical appliances, facilitating the maintenance of the staff.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A central control box includes: a housing, a lower cover plate, a circuit board assembly, a circuit partition, and a protective cover; wherein, the circuit board assembly is installed inside the housing, and one end of the circuit board assembly is connected to the interface on the surface of the lower cover plate; the circuit partition is installed inside the housing, the circuit partition is provided with at least one second fastener, and the circuit partition is fixed on the housing through at least one first fastener; a plurality of electrical components are installed on the upper surface of the circuit partition, and the protective cover is arranged above the plurality of electrical components; the lower cover plate is located below the housing, the lower cover plate is provided with at least one second fastener, and the lower cover plate is fixed on the housing through at least one second fastener, and a plurality of interfaces are arranged on the surface of the lower cover plate.

[0006] In a possible design, the plurality of electrical components include at least one of the following: a fuse strip group, a multi-pin relay group.

[0007] In a possible design, the type of the fuse in the fuse strip group is a mini fuse, and the fuse strip group includes: a first fuse strip group, a second fuse strip group, a third fuse strip group, a fourth fuse strip group, a fifth fuse strip group, and a sixth fuse strip group, and each fuse strip group includes a plurality of fuses; the first fuse strip group, the second fuse strip group, the third fuse strip group, and the sixth fuse strip group are installed on the upper part of the plane of the circuit partition; the fourth fuse strip group and the fifth fuse strip group are installed on the lower part of the plane of the circuit partition.

[0008] In a possible design, the protective cover includes a first protective cover and a second protective cover. The first protective cover is disposed above the first fuse sheet group, the second fuse sheet group, the third fuse sheet group, and the sixth fuse sheet group, and the second protective cover is disposed above the fourth fuse sheet group and the fifth fuse sheet group. A first nameplate is provided on the surface of the first protective cover, and a first light film is provided below the first protective cover. A second nameplate is provided on the surface of the second protective cover, and a second light film is provided below the second protective cover.

[0009] In a possible design, the types of the multi-pin relays included in the multi-pin relay group are four-pin relays or five-pin relays. The multi-pin relay group includes: a first multi-pin relay group, a second multi-pin relay group, a third multi-pin relay group, a fourth multi-pin relay group, and a fifth multi-pin relay group. Each multi-pin relay group includes a plurality of multi-pin relays. The first multi-pin relay group, the second multi-pin relay group, the third multi-pin relay group, the fourth multi-pin relay group, and the fifth multi-pin relay group are horizontally installed in the middle of the plane of the circuit partition.

[0010] In a possible design, the types of the multi-pin relays included in the second multi-pin relay group, the third multi-pin relay group, and the fifth multi-pin relay group are four-pin relays, and the types of the multi-pin relays included in the first multi-pin relay group and the fourth multi-pin relay group are five-pin relays.

[0011] In a possible design, a partition piece is provided in the first multi-pin relay group.

[0012] In a possible design, the central control box further includes: a fusing alarm circuit. The fusing alarm circuit includes a fusing fuse, a voltage-dividing resistor, and a light-emitting diode. The voltage-dividing resistor is connected in series with the light-emitting diode, and the fusing fuse is connected in parallel with the circuit formed by the voltage-dividing resistor and the light-emitting diode. One end of each fusing alarm circuit is connected to an electrical appliance, and the other end is connected to a power supply common point. A plurality of fusing alarm circuits are connected to the same power supply common point. The fusing fuse is one of the fuse sheets in the fuse sheet group, and the light-emitting diode is disposed on or below the light film.

[0013] In a possible design, mounting portions are provided on both sides of the housing, fixing gaskets are provided on the mounting portions, and a card puller is further provided on one side of the housing.

[0014] In a possible design, the type of the first fastener is a combination screw, and the type of the second fastener is a cross recessed countersunk head self-tapping screw.

[0015] In summary, the utility model has the following beneficial effects: The central control box is provided with a circuit board assembly, a circuit partition board, and a protective cover in its housing. Multiple groups of fuse sets and multiple groups of multi-pin relay sets are installed on the upper surface of the circuit partition board, and a protective cover is also provided above the fuse sets. A lower cover plate is provided below the housing, and multiple interfaces are provided on the surface of the lower cover plate. Among them, the number of fuse sets and multi-pin relays can be set to more than twenty, and a fuse-breaking alarm indication circuit is also provided between the power supply common point and the electrical appliance. Therefore, the central control box has complete functions. Compared with the existing control box, it can control more than twice the number of electrical appliances, and can also give an alarm in time when the fuse blows due to abnormal electrical appliances, facilitating the maintenance of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 FIG. 6 is a top view of a central control box provided by an embodiment of the utility model;

[0017] Figure 2 FIG. 10 is a bottom view of a central control box provided by an embodiment of the utility model;

[0018] Figure 3 FIG. 14 is a side view of a central control box provided by an embodiment of the utility model;

[0019] Figure 4 FIG. 18 is a partial schematic diagram of a relay of a central control box provided by an embodiment of the utility model;

[0020] Figure 5 FIG. 22 is a partial schematic diagram of a fuse set of a central control box provided by an embodiment of the utility model;

[0021] Figure 6 FIG. 26 is a schematic diagram of a fuse-breaking alarm circuit of a central control box provided by an embodiment of the utility model;

[0022] Figure 7 FIG. 30 is a partial schematic diagram of a fuse-breaking alarm circuit of a central control box provided by an embodiment of the utility model;

[0023] Reference numerals: 1 - housing; 2 - lower cover plate; 3 - protective cover; 4 - card extractor; 5 - circuit board assembly; 6 - partition piece; 7 - first fuse set; 8 - second fuse set; 9 - third fuse set; 10 - fourth fuse set; 11 - fifth fuse set; 12 - sixth fuse set; 13 - first multi-pin relay set; 14 - second multi-pin relay set; 15 - third multi-pin relay set; 16 - fourth multi-pin relay set; 17 - fifth multi-pin relay set; 18 - fixing gasket; 19 - second fastener; 20 - first fastener; 21 - first nameplate; 22 - first light film; 23 - second nameplate; 24 - second light film; 25 - circuit partition board. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0025] It should be noted that in the embodiments of the present utility model, words such as "exemplary" or "for example" are used to represent examples, illustrations or explanations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of the present utility model should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Exactly speaking, the use of words such as "exemplary" or "for example" is intended to present relevant concepts in a specific manner.

[0026] It should be noted that the architecture described in the embodiments of the present utility model is for more clearly explaining the technical solutions in the embodiments of the present utility model, and does not constitute a limitation on the technical solutions provided in the embodiments of the present utility model. Those of ordinary skill in the art can know that with the evolution of relevant industry technologies and the emergence of other devices, the technical solutions provided in the embodiments of the present utility model are equally applicable to similar technical problems.

[0027] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present utility model.

[0028] At the present stage, with the development of automobiles and electronic products, there are more and more electrical appliances on automobiles, and accordingly, the number of circuits controlled and protected by the central control box has also increased correspondingly. The central control box is responsible for the power distribution of the whole vehicle to ensure the safe use of each electrical appliance. The quality of the central control box directly affects the performance and safety of the automobile. At present, the number of circuits controlled by the central control box in the industry is not many, mostly in the teens, which cannot meet the use of more and more electrical appliances on automobiles. Moreover, with the increase in the number of control circuits, installation and maintenance become more and more troublesome, affecting work efficiency.

[0029] To facilitate the understanding of this solution, the following briefly introduces the automotive central control box in the prior art:

[0030] The automotive central control box includes a housing and a printed circuit board. The printed circuit board is fixed on the housing. There are power access posts on the printed circuit board. There are several fuse sockets, relay sockets, and functional outgoing line sockets on the printed circuit board. The fuse sockets, relay sockets, and functional outgoing line sockets are arranged in a matrix on the printed circuit board respectively. The fuse sockets, relay sockets, and functional outgoing line sockets are connected through the printed circuit board to form the connection circuit of the function control module. In the field of central control boxes, the size of the product is subject to strict requirements. There are roughly two types of existing central control boxes classified according to their internal structures: copper bar structure and circuit board structure.

[0031] For the central control box with a copper bar structure, a copper bar with a length, width, thickness, and shape meeting the design requirements is made from a copper plate using a mold. It is connected to the fuse socket, connector terminal, and relay socket of the central control box. The copper bars are insulated and fixed with an insulator between them, and then fixed on the upper and lower plastic covers. Because the copper bar has good electrical conductivity and a relatively large cross-section, the heat generation is not large, and there will be no short circuit or deformation, and the reliability is very good. However, generally, dozens of molds are required for one central control box, and the price of copper materials is also very high, so the manufacturing cost is very high and the volume is also large.

[0032] The central control box with a circuit board structure is increasingly accepted, mainly because of the improvement of circuit board materials and manufacturing processes. The circuit board can pass a larger current, has a small structure, and a lower cost. Therefore, most of the current central control boxes are of the circuit board structure. However, this structure also has disadvantages. Because of the high density and the limitations of the width and thickness of the copper foil, the heat generation of the circuit board is very large.

[0033] The above is a single introduction to the automotive central control box in the prior art.

[0034] Based on the defects of the central control box in the above-mentioned prior art, the present utility model proposes a central control box. There is a circuit board assembly, a circuit partition, and a protective cover in its housing. Multiple groups of fuse pieces and multiple groups of multi-pin relays are installed on the upper surface of the circuit partition. And there is also a protective cover above the fuse piece group. There is a lower cover plate below the housing, and there are multiple interfaces on the surface of the lower cover plate. Among them, the number of fuse piece groups and multi-pin relays can be set to more than twenty, and a fuse-breaking alarm indication circuit is also set between the power supply common point and the electrical appliance. Thus, this central control box has complete functions. Compared with the existing control box, it can control more than twice the number of electrical appliances, and at the same time, when the fuse melts due to an abnormality of the electrical appliance, it can give an alarm in time, which is convenient for the staff to repair.

[0035] Exemplarily, Figure 1 is a top view of a central control box provided by an embodiment of the present utility model. Figure 2 is a bottom view of a central control box provided by an embodiment of the present utility model. Figure 3A side view of a central control box provided by an embodiment of the present utility model Figure 4 A partial schematic diagram of a relay of a central control box provided by an embodiment of the present utility model Figure 5 A partial schematic diagram of a fuse group of a central control box provided by an embodiment of the present utility model Figure 6 A schematic diagram of a fuse alarm circuit of a central control box provided by an embodiment of the present utility model Figure 7 A partial schematic diagram of a fuse alarm circuit of a central control box provided by an embodiment of the present utility model. Combining the foregoing drawings, in the central control box proposed by the present utility model:

[0036] Referring to Figures 1 to 5 the central control box includes: a housing 1, a lower cover plate 2, a protective cover 3, a card extractor 4, a circuit board assembly 5, a partition piece 6, a first fuse group 7, a second fuse group 8, a third fuse group 9, a fourth fuse group 10, a fifth fuse group 11, a sixth fuse group 12, a first multi-pin relay group 13, a second multi-pin relay group 14, a third multi-pin relay group 15, a fourth multi-pin relay group 16, a fifth multi-pin relay group 17, a fixing gasket 18, a second fastener 19, a first fastener 20, a first nameplate 21, a first light film 22, a second nameplate 23, a second light film 24, and a circuit partition 25.

[0037] Among them, the circuit board assembly 5 is installed inside the housing 1 and fixed to the housing 1 through the first fastener 20. One end of the circuit board assembly 5 is connected to an interface on the surface of the lower cover plate.

[0038] The lower cover plate is located below the housing. At least one second fastener 19 is provided on the lower cover plate 2. The lower cover plate 2 is fixed to the housing 1 through at least one second fastener 19. A plurality of interfaces are provided on the surface of the lower cover plate 2. It can be understood that one end of the circuit board assembly 5 is connected to one of the foregoing plurality of interfaces.

[0039] In addition, the circuit partition 25 is installed inside the housing 1. At least one second fastener 20 is provided on the circuit partition 25. The circuit partition 25 is fixed to the housing 1 through at least one first fastener 20.

[0040] Moreover, a plurality of electrical components are installed on the upper surface of the circuit partition 25, and the protective cover 3 is arranged above the plurality of electrical components.

[0041] Optionally, the plurality of electrical components include at least one of the following: a fuse group, a multi-pin relay group.

[0042] In a possible implementation, the type of the fuse pieces included in the fuse piece group is a mini fuse piece, and the fuse piece group includes: a first fuse piece group 7, a second fuse piece group 8, a third fuse piece group 9, a fourth fuse piece group 10, a fifth fuse piece group 11, and a sixth fuse piece group 12, and each fuse piece group includes a plurality of fuse pieces.

[0043] Exemplarily, referring to Figure 1 and Figure 5 , the first fuse piece group 7 includes 18 mini fuse pieces, the second fuse piece group 8 includes 17 mini fuse pieces, the third fuse piece group 9 includes 8 mini fuse pieces, the fourth fuse piece group 10 includes 18 mini fuse pieces, the fifth fuse piece group 11 includes 1 mini fuse piece, and the sixth fuse piece group 12 includes 3 mini fuse pieces. It can be understood that the melting current magnitude values of the fuse pieces in different fuse piece groups are different.

[0044] Optionally, the first fuse piece group 7, the second fuse piece group 8, the third fuse piece group 9, and the sixth fuse piece group 12 are installed above the plane of the line partition 25. Also, the fourth fuse piece group 10 and the fifth fuse piece group 11 are installed below the plane of the line partition 25.

[0045] Exemplarily, referring to Figure 1 , the protective cover 3 includes a first protective cover and a second protective cover. The first protective cover is arranged above the first fuse piece group 7, the second fuse piece group 8, the third fuse piece group 9, and the sixth fuse piece group 12, and the second protective cover is arranged above the fourth fuse piece group 10 and the fifth fuse piece group 11.

[0046] Optionally, in order to provide indication information to the users of the central control box, a first nameplate 21 is arranged on the surface of the first protective cover, and a first light film 22 is arranged below the first protective cover; a second nameplate 23 is arranged on the surface of the second protective cover, and a second light film 24 is arranged below the second protective cover. The function of the nameplate is to engrave corresponding indication information thereon; light-emitting diodes are arranged below the light film and are used to indicate whether the corresponding electrical appliance circuit is abnormal through the light-emitting condition.

[0047] In a possible implementation, the type of the multi-pin relays included in the multi-pin relay group is a four-pin relay or a five-pin relay, and the multi-pin relay group includes: a first multi-pin relay group 13, a second multi-pin relay group 14, a third multi-pin relay group 15, a fourth multi-pin relay group 16, and a fifth multi-pin relay group 17, and each multi-pin relay group includes a plurality of multi-pin relays.

[0048] Exemplarily, referring to Figure 1, the types of multi-pin relays included in the second multi-pin relay group 14, the third multi-pin relay group 15, and the fifth multi-pin relay group 17 are four-pin relays. Among them, the second multi-pin relay group 14 includes 10 four-pin relays, the third multi-pin relay group 15 includes 4 four-pin relays, and the fifth multi-pin relay group 17 includes 2 four-pin relays.

[0049] Also, the types of multi-pin relays included in the first multi-pin relay group 13 and the fourth multi-pin relay group 16 are five-pin relays. Among them, the first multi-pin relay group 13 includes 3 five-pin relays, and the fourth multi-pin relay group 16 includes 3 five-pin relays.

[0050] Optionally, a partition piece 6 is provided in the first multi-pin relay group 13 to play a protective role.

[0051] Optionally, the first multi-pin relay group 13, the second multi-pin relay group 14, the third multi-pin relay group 15, the fourth multi-pin relay group 16, and the fifth multi-pin relay group 17 are horizontally installed in the middle of the plane of the line partition board 25.

[0052] Optionally, referring to Figure 1 and Figure 3 , mounting parts are provided on both sides of the housing 2, fixing gaskets 18 are provided on the mounting parts, and a card puller 4 is also provided on one side of the housing 2.

[0053] In a possible implementation manner, the central control box further includes: a fuse alarm circuit.

[0054] Referring to Figure 6 , the fuse alarm circuit includes a fuse, a voltage-dividing resistor, and a light-emitting diode. The voltage-dividing resistor is in series with the light-emitting diode, and the fuse is in parallel with the circuit formed by the voltage-dividing resistor and the light-emitting diode; one end of each fuse alarm circuit is connected to an electrical appliance, and the other end is connected to the power supply common point. Multiple fuse alarm circuits are connected to the same power supply common point.

[0055] Optionally, the fuse is one of the fuse pieces in the fuse piece group.

[0056] Specifically, in order to control and protect more electrical appliances, the central control box is powered by the same power supply common point, and each function is connected in a parallel circuit form with a single-wire system referring to Figure 6 . Figure 6 In the connection manner in, space can be saved, and the saved space can be used to install more fuse piece groups to achieve the protection of more electrical appliances.

[0057] Thus, the power supply for each electrical function is taken from the common power supply point. The fuse and the electrical appliance are connected in series. If the current of a certain electrical appliance suddenly increases and exceeds the rated value of the fuse, the fuse will blow, protecting the electrical appliance.

[0058] Optionally, the light-emitting diodes are arranged below the lamp film 23 or the lamp film 24.

[0059] Specifically, referring to Figure 7 , in order to quickly find out which fuse has blown, Figure 7 a fuse alarm indication circuit composed of a resistor and a light-emitting diode is connected in parallel with the circuit fuse in

[0060] . When the fuse has not blown, the fuse is equivalent to a wire, and the fuse alarm indication circuit composed of the resistor and the light-emitting diode will be short-circuited, and the light-emitting diode will not emit light. When the fuse blows, the fuse is equivalent to a disconnected wire. The current will not flow through the fuse but will flow through the parallel resistor and light-emitting diode, and the light-emitting diode will emit light when there is current passing through it. At this time, the light-emitting diodes under the lamp film 23 or the lamp film 24 will light up, playing the role of alarm indication. Based on the above technical solutions, in the central control box provided by the present utility model, a circuit board assembly, a circuit partition board, and a protective cover are arranged in its housing. Multiple groups of fuse pieces and multiple groups of multi-pin relays are installed on the upper surface of the circuit partition board, and a protective cover is also arranged above the fuse piece group. A lower cover plate is arranged below the housing, and multiple interfaces are arranged on the surface of the lower cover plate. Among them, the number of fuse piece groups and multi-pin relays can be set to more than twenty, and a fuse alarm indication circuit is also arranged between the common power supply point and the electrical appliance. Therefore, the central control box has complete functions. Compared with the existing control box, it can control more than twice the number of electrical appliances, and can also give an alarm in time when the fuse blows due to abnormal conditions of the electrical appliance, facilitating the maintenance of the staff.

[0061] It should be noted that Figure 1 the component structures shown in Figure 1 and other drawings do not constitute a limitation on the central control box. Except for

[0062] the components shown in and other drawings, the central control box may include more or fewer components than those shown in the drawings, or combine some components, or have different component arrangements.It should be noted that the terms "first" and "second" in the description, claims and drawings of the present utility model are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally further include steps or units not listed, or may optionally further include other steps or units inherent to these processes, methods, products or devices.

[0063] It should be understood that in the present utility model, "at least one (item)" means one or more.

[0064] "A plurality" means two or more, "at least two (items)" means two or three and more than three. "And / or" is used to describe the relationship between related objects, indicating that three relationships can exist. For example, "A and / or B" can mean: only A exists, only B exists, and both A and B exist at the same time. Among them, A and B can be singular or plural. The character " / " generally means that the related objects before and after are in an "or" relationship. "At least one (item) below" or its similar expression means any combination of these items, including any combination of single item (item) or plural items (items). For example, at least one (item) of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or plural.

[0065] As described above, the above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions within the technical scope disclosed by the present utility model should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A central control box, characterized in that: The central control box comprises: a housing (1), a lower cover (2), a circuit board assembly (5), a circuit partition (25), and a protective cover (3); The circuit board assembly (5) is installed inside the housing (1), and one end of the circuit board assembly (5) is connected to an interface on the surface of the lower cover plate (2); The circuit partition (25) is installed inside the housing (1), the circuit partition (25) is provided with at least one second fastener (20), and the circuit partition (25) is fixed to the housing (1) via at least one first fastener (20); a plurality of electrical components are installed on the upper surface of the circuit partition (25), and the protective cover (3) is arranged above the plurality of electrical components; The lower cover plate (2) is located below the shell (1), at least one second fastener (19) is provided on the lower cover plate (2), the lower cover plate (2) is fixed to the shell (1) via the at least one second fastener (19), and a plurality of interfaces are provided on the surface of the lower cover plate (2).

2. The central control box according to claim 1, characterized in that: The plurality of electrical components include at least one of the following: a fuse set and a multi-pin relay set.

3. The central control box according to claim 2, characterized in that: The type of the fuse pieces included in the fuse piece group is a mini fuse piece, and the fuse piece group includes: a first fuse piece group (7), a second fuse piece group (8), a third fuse piece group (9), a fourth fuse piece group (10), a fifth fuse piece group (11), and a sixth fuse piece group (12), and each fuse piece group includes a plurality of fuse pieces; The first safety piece group (7), the second safety piece group (8), the third safety piece group (9) and the sixth safety piece group (12) are installed on the upper plane of the circuit partition (25); The fourth safety piece group (10) and the fifth safety piece group (11) are installed on the lower plane of the circuit partition (25).

4. The central control box according to claim 3, characterized in that: The protective cover (3) comprises a first protective cover and a second protective cover, the first protective cover is arranged above the first safety plate group (7), the second safety plate group (8), the third safety plate group (9) and the sixth safety plate group (12), and the second protective cover is arranged above the fourth safety plate group (10) and the fifth safety plate group (11); A first nameplate (21) is arranged on the surface of the first protective cover, and a first lamp film (22) is arranged below the first protective cover; a second nameplate (23) is arranged on the surface of the second protective cover, and a second lamp film (24) is arranged below the second protective cover.

5. The central control box according to claim 2, characterized in that: The multi-pin relays included in the multi-pin relay group are of a four-pin relay or a five-pin relay type. The multi-pin relay group includes: a first multi-pin relay group (13), a second multi-pin relay group (14), a third multi-pin relay group (15), a fourth multi-pin relay group (16), and a fifth multi-pin relay group (17), and each multi-pin relay group includes a plurality of multi-pin relays; The first multi-pin relay group (13), the second multi-pin relay group (14), the third multi-pin relay group (15), the fourth multi-pin relay group (16) and the fifth multi-pin relay group (17) are installed transversely in the middle of the plane of the circuit partition (25).

6. The central control box according to claim 5, characterized in that: The multi-pin relays included in the second multi-pin relay group (14), the third multi-pin relay group (15), and the fifth multi-pin relay group (17) are of the type of the four-pin relays, and the multi-pin relays included in the first multi-pin relay group (13) and the fourth multi-pin relay group (16) are of the type of the five-pin relays.

7. The central control box according to claim 6, characterized in that: The first multi-pin relay group (13) is provided with a partition sheet (6).

8. The central control box according to claim 1, characterized in that: The central control box also includes: a fuse alarm circuit; The fuse alarm circuit includes a fuse, a voltage-dividing resistor, and a light-emitting diode. The voltage-dividing resistor is connected in series with the light-emitting diode, and the fuse is connected in parallel with the circuit formed by the voltage-dividing resistor and the light-emitting diode; one end of each fuse alarm circuit is connected to an electrical appliance, and the other end is connected to a common power supply point; multiple fuse alarm circuits are connected to the same common power supply point; The fuse is a fuse piece in the fuse piece group, and the light emitting diode is arranged below the lamp film (23) or the lamp film (24).

9. The central control box according to claim 1, characterized in that: Mounting parts are arranged on both sides of the shell (2), fixing gaskets (18) are arranged on the mounting parts, and a puller (4) is also arranged on one side of the shell (2).

10. The central control box according to any one of claims 1 to 9, characterized in that: The first fastener (20) is a combination screw, and the second fastener (19) is a cross recessed countersunk self-tapping screw.

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