A distribution box

Abstract

The application provides a distribution box, comprising an editing box, an uncontrollable box and a controllable box, wherein the editing box is provided with an incoming line terminal row and an outgoing line terminal row; the uncontrollable box is provided with a first circuit breaker, a first current transformer, a first CT connecting plate, a second circuit breaker, a first expansion connecting plate and a main control board; the controllable box is provided with a contactor and a second expansion connecting plate; the outgoing line end of the second circuit breaker is connected with the outgoing line terminal row or the incoming line end of the contactor; and the outgoing line end of the contactor is connected with the outgoing line terminal row. The distribution box is modularized designed and connected by plug-in, facilitating the production, assembly and maintenance of single modules, simplifying the structure of the distribution box, and enabling the editing of the control of the second circuit breaker to be completed by operating the editing box only, thereby improving the editability and expandability of the distribution box, meeting different power distribution requirements, and improving the assembly and maintenance efficiency of the distribution box, and improving the production and work efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power distribution equipment, and particularly relates to a power distribution box. BACKGROUND

[0002] The traditional power distribution box simply sets the circuit breaker, current transformer, contactor and other devices in the power distribution box body, which can meet the power distribution demand of the user when the power distribution demand of the user is low. However, with the increasing power distribution demand of the user, the traditional power distribution box cannot meet the power distribution demand of the user when the power distribution demand of the user is high. On the one hand, it will cause the problems of complex structure, large assembly and maintenance difficulty, complex wiring and messy lines, low production and work efficiency, and inconvenience for mass rapid production. On the other hand, the traditional power distribution box has poor editability and expandability, and cannot meet the increasing power distribution demand of the user. Therefore, it is necessary to invent a new type of power distribution box to solve the above problems. SUMMARY

[0003] The present application relates to the technical field of power distribution equipment, and particularly relates to a power distribution box.

[0004] To achieve the above-mentioned purpose, the embodiment of the present application provides a power distribution box, which comprises an editing box and an uncontrollable box. The editing box is provided with an incoming line terminal row and an outgoing line terminal row. The uncontrollable box is provided with a first circuit breaker, a first current transformer, a first CT (Current Transformer) connecting plate, a second circuit breaker, a first expansion connecting plate and a main control board. The incoming line terminal of the first circuit breaker is connected with the incoming line terminal row provided in the editing box. The outgoing line terminal of the first circuit breaker is connected with a first line. The first current transformer is sleeved on the first line and connected with the main control board. The first line is connected with at least one second circuit breaker. The first CT connecting plate and the first expansion connecting plate are respectively connected with the main control board through plug-in connection. Through the modular design and plug-in connection of the editing box, the first CT connecting plate, the first expansion connecting plate and the main control board, the production and maintenance of the single module are more convenient, the editability and expandability of the power distribution cabinet are improved, the power distribution box does not need to be connected with complex connecting lines during assembly, the problems of complex strong and weak electric wiring and messy lines in the prior art are solved, the installation and disassembly of the power distribution box are more convenient and fast, the assembly and maintenance efficiency of the entire power distribution box product is significantly improved, and the production efficiency is effectively improved.

[0005] Further, the first CT connecting plate is provided with a first plug-in connector, at least one second current transformer and a first terminal connected with the second current transformer, the at least one first terminal is connected with the first plug-in connector through the first CT connecting plate, the second current transformer is used to collect the current signal of the second line introduced into the second circuit breaker through the first line, and sequentially transmitted to the main control board through the first terminal and the first plug-in connector. Through the modular design of the first CT connecting plate, the current signals collected by multiple second current transformers can be integrated, without the need to connect each second current transformer with the main control board respectively, but only need to connect each second current transformer with the corresponding first terminal according to the required number, which is convenient for assembly and disassembly, does not need additional complex wiring, simplifies the structure of the distribution box, improves the flexibility and expandability of the product, and improves the assembly efficiency of the product.

[0006] Further, the first extension connecting plate is provided with at least one second terminal and a second plug-in connector connected therewith through the first extension connecting plate, the second terminal is connected with the second circuit breaker corresponding thereto, used to collect the on-off state of the second circuit breaker and transmit to the main control board through the second plug-in connector, and input a control signal to the second circuit breaker through the main control board. Through the modular design of the first extension connecting plate, the on-off state and control signal of multiple second circuit breakers can be integrated, without the need to connect each second circuit breaker with the main control board respectively, but only need to connect each second circuit breaker with the corresponding second terminal according to the required number, which is convenient for assembly and disassembly, does not need additional complex wiring, simplifies the structure of the distribution box, improves the flexibility and expandability of the product, and improves the assembly efficiency of the product.

[0007] Further, it further includes a controllable box, the controllable box is provided with a contactor and a second extension connecting plate, and the outgoing line end of the contactor is connected with the outgoing terminal row arranged in the editing box.

[0008] Further, the outgoing line end of the second circuit breaker is connected with the outgoing terminal row arranged in the editing box or with the incoming line end of the contactor; through the modular design of the editing box, the uncontrollable box and the controllable box, the structure of the distribution box is simplified, the outgoing terminal row of the editing box can be connected with the second circuit breaker of the uncontrollable box respectively, or the second circuit breaker can be connected with the contactor of the controllable box, the editability and expandability of the control of the second circuit breaker are increased, and only need to be operated in the editing box to complete, the editability and controllability of the distribution box product are improved.

[0009] Further, the second expansion connecting plate is provided with a third connector, at least one third terminal and at least one fourth terminal, the third terminal and the fourth terminal are connected with the third connector through the second expansion connecting plate, the third connector is connected with the main control board, and the contactor is connected with the corresponding third terminal and fourth terminal; through the modular design of the controllable box and the second expansion connecting plate, the second expansion connecting plate can integrate the control signals of multiple contactors, and each contactor only needs to be connected with the corresponding third terminal and fourth terminal according to the required number, without the need of being connected with the main control board respectively, so that the assembly and disassembly are convenient, without the need of additional complex wiring, the structure of the distribution box is simplified, the product flexibility and expandability are improved, and the product assembly efficiency is improved.

[0010] Further, the distribution box further comprises: a residual current transformer arranged in the first line and / or the second line and connected with the main control board, used for detecting a residual current signal in the line; and / or an arc transformer arranged in the first line and / or the second line and connected with the main control board, used for detecting an arc signal in the line; and / or a temperature sensor arranged in at least one position of the distribution box body, the first line, the second line or a line joint and connected with the main control board, used for detecting a temperature signal of the distribution box.

[0011] Further, the main control board is provided with at least one processor (CPU), at least one eighth connector and at least one ninth connector.

[0012] Further, the distribution box further comprises a display device connected with the main control board, used for parameter display of the distribution box and control operation of a user, which can include display of voltage, current, electric quantity, temperature, circuit breaker state, residual current, arc signal, self-provided power state and the like, and can also perform control operation of a circuit breaker or a contactor and the like.

[0013] Optionally, the display device comprises at least one of the following: a touch screen, a liquid crystal screen, an LED screen and an OLED screen.

[0014] It should be noted that the connector mentioned above can be a matched plug and a socket, and the CT connecting plate, the expansion connecting plate and the main control board mentioned above can be a PCB.

[0015] Further, the distribution box further comprises a self-provided power supply, which is connected with the first line and the main control board respectively and supplies power to the main control board. Optionally, the self-provided power supply can comprise a power supply and a lithium battery, the power supply is connected with the first line and converts into low voltage to charge the lithium battery, and the power supply can directly or through the lithium battery supply power to the main control board or other power consuming devices in the distribution box.

[0016] The distribution box provided by the embodiment of the present application has the beneficial effects that: the modular design and plug-in connection of the editing box, the first CT connecting plate, the first extension connecting plate, the second extension connecting plate, the main control board, the uncontrollable box and the controllable box facilitate the production and maintenance of single modules, the installation and connection of the second current transformer, the second circuit breaker and the contactor are more accurate and do not require additional complex lines, the structure of the distribution box is simplified, the editing of the second circuit breaker control can be completed by editing the editing box, the editability and expandability of the distribution box are improved, different power distribution requirements can be met, the distribution box and the modules do not need to be connected by complex connecting lines during assembly, the problems of complex strong and weak current wiring and messy lines in the prior art are solved, the installation and disassembly of the distribution box are more convenient and fast, the assembly and maintenance efficiency of the entire distribution box product is significantly improved, and the production and work efficiency is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0018] Figure 1 The structural schematic diagram of the distribution box provided for the first embodiment of the present application;

[0019] Figure 2 The structural schematic diagram of the distribution box provided for the second embodiment of the present application;

[0020] Figure 3 The structural schematic diagram of the distribution box provided for the third embodiment of the present application;

[0021] Figure 4 The structural schematic diagram of the distribution box provided for the fourth embodiment of the present application.

[0022] Explanation of reference signs:

[0023] 1, editing box; 101, incoming terminal row; 102, outgoing terminal row; 2, uncontrollable box; 3, first circuit breaker; 4, first current transformer; 5, residual current transformer; 6, first CT connecting plate; 601, second current transformer; 602, first terminal; 603, first plug; 604, fourth plug; 7, second circuit breaker; 8, first expansion connecting plate; 801, second terminal; 802, second plug; 803, fifth plug; 9, second expansion connecting plate; 901, third terminal; 902, fourth terminal; 903, third plug; 10, contactor; 11, main control board; 111, processor; 112, eighth plug; 113, ninth plug; 12, first line; 13, second line; 14, self-provided power supply; 15, second CT connecting plate; 151, third current transformer; 152, fifth terminal; 153, sixth plug; 16, display device; 17, third expansion connecting plate; 171, sixth terminal; 172, seventh plug; 18, arc transformer; 19, temperature sensor; 20, controllable box. DETAILED DESCRIPTION

[0024] The power distribution box of the embodiment of the present application is described in detail below in combination with the drawings.

[0025] Embodiment one

[0026] Figure 1The structural schematic diagram of the power distribution box provided by the embodiment of the present application is shown. The power distribution box described in the embodiment comprises an editing box 1 and an uncontrollable box 2. The editing box 1 is provided with an incoming line terminal row 101 and an outgoing line terminal row 102. The uncontrollable box 2 is provided with a first circuit breaker 3, a first current transformer 4, a first CT connecting plate 6, a second circuit breaker 7, a first expansion connecting plate 8 and a main control board 11. The incoming line end of the first circuit breaker 3 is connected with the incoming line terminal row 101 provided in the editing box 1. The outgoing line end of the first circuit breaker 3 is connected with a first line 12. The first current transformer 4 is sleeved on the first line 12 and connected with the main control board 11. The first line 12 is connected with at least one second circuit breaker 7. The first CT connecting plate 6 and the first expansion connecting plate 8 are respectively plug-connected with the main control board 11, i.e. plug-connected with the eighth plug connector 112 through the first plug connector 603 and plug-connected with the ninth plug connector 113 through the second plug connector 802. Through the modular design and plug connection of the editing box 1, the first CT connecting plate 6, the first expansion connecting plate 8 and the main control board 11, the production and maintenance of single modules are more convenient, the editability and expandability of the power distribution cabinet are improved, the power distribution box does not need to be connected by using complex connecting lines during assembly, the problems of complex strong and weak electric wiring and messy lines in the prior art are solved, the installation and disassembly of the power distribution box are more convenient and fast, the assembly and maintenance efficiency of the entire power distribution box product is significantly improved, and the production efficiency is effectively improved.

[0027] Further, the first CT connecting plate 6 is provided with a first plug connector 603, at least one second current transformer 601 and a first terminal 602 corresponding to the second current transformer 601. The at least one first terminal 602 is connected with the first plug connector 603 through the first CT connecting plate 6. The second current transformer 601 is used to collect the current signal of a second line 13 introduced into the second circuit breaker 7 from the first line 12 and sequentially transmitted to the main control board 11 through the first terminal 602 and the first plug connector 603. Through the modular design of the first CT connecting plate 6, the current signals collected by multiple second current transformers 601 can be integrated without connecting each second current transformer 601 with the main control board 11. Each second current transformer 601 only needs to be connected with the corresponding first terminal 602 according to the required number, which is convenient for assembly and disassembly, does not need additional complex wiring, simplifies the structure of the power distribution box, improves the flexibility and expandability of the product and improves the product assembly efficiency.

[0028] Further, the first extension connecting plate 8 is provided with at least one second terminal 801 and a second plug 802 connected thereto through the first extension connecting plate 8, the second terminal 801 is connected with the corresponding second circuit breaker 7, used for collecting the on-off state of the second circuit breaker 7 and transmitting it to the main control board 11 through the second plug 802, and inputting a control signal to the second circuit breaker 7 through the main control board 11, through the modular design of the first extension connecting plate 8, the on-off state and control signal of multiple second circuit breakers 7 can be integrated, without the need for each second circuit breaker 7 to be connected with the main control board 11 respectively, only the required number of each second circuit breaker 7 needs to be connected with the corresponding second terminal 801 respectively, which is convenient for assembly and disassembly, does not need additional complex wiring, simplifies the structure of the distribution box, improves the flexibility and expandability of the product, and improves the assembly efficiency of the product.

[0029] Further, the outgoing terminal of the second circuit breaker 7 is connected with the outgoing terminal row 102 provided in the distribution box 1.

[0030] Further, the distribution box further comprises a residual current transformer 5 provided in the first line 12 and / or the second line 13 and connected with the main control board 11, used for detecting the residual current signal in the line; and / or an arc transformer 18 provided in the first line 12 and / or the second line 13 and connected with the main control board 11, used for detecting the arc signal in the line; and / or a temperature sensor 19 provided in at least one position of the distribution box body, the first line 12, the second line 13 or the line joint, and connected with the main control board 11, used for detecting the temperature signal of the distribution box.

[0031] Further, the main control board is provided with at least one processor (CPU) 111, at least one eighth plug 112 and at least one ninth plug 113.

[0032] Further, the distribution box further comprises a display device 16 connected with the main control board 11, used for parameter display of the distribution box and control operation of the user, which can include display of voltage, current, power, temperature, circuit breaker state, residual current, arc signal, self-provided power state and the like, and can also perform control operation of circuit breakers or contactors and the like.

[0033] Optionally, the display device comprises at least one of the following: a touch screen, a liquid crystal screen, an LED screen and an OLED screen.

[0034] It should be noted that the above-mentioned plug and socket can be a matched plug and socket, and the CT connecting plate, the extension connecting plate and the main control board can be a PCB.

[0035] Further, the distribution box further comprises a self-provided power supply 14, which is connected with the first line 12 and the main control board 11 respectively and supplies power to the main control board 11. Optionally, the self-provided power supply 14 can comprise a power supply and a lithium battery, the power supply is connected with the first line 12 and converts into low voltage to charge the lithium battery, the power supply can directly or through the lithium battery supply power to the main control board 11 or other electrical devices in the distribution box.

[0036] Embodiment two

[0037] Figure 2 The structural schematic diagram of the distribution box provided by the embodiment two of the application is shown, the same parts as those in the embodiment one adopt the same reference numerals, and only the differences will be described below. The distribution box described in the embodiment further comprises a controllable box 20, the contactor 10 and the second expansion connecting plate 9 are arranged in the controllable box 20, and the outgoing line end of the contactor 10 is connected with the outgoing line terminal row 102 arranged in the editing box 1.

[0038] Further, the outgoing line end of the second circuit breaker 7 is connected with the outgoing line terminal row 102 arranged in the editing box 1 or the incoming line end of the contactor 10; through the modular design of the editing box 1, the uncontrollable box 2 and the controllable box 20, the structure of the distribution box is simplified, the outgoing line terminal row 102 of the editing box 1 can be connected with the second circuit breaker 7 of the uncontrollable box 2 respectively, or can be connected with the second circuit breaker 7 through the contactor 10 of the controllable box 20, the editability and expandability of the control of the second circuit breaker 7 are increased, and only the operation of the editing box 1 is needed to complete, thereby improving the editability and controllability of the distribution box product.

[0039] Further, the third plug-in part 903, at least one third terminal 901 and at least one fourth terminal 902 are arranged on the second expansion connecting plate 9, the third terminal 901 and the fourth terminal 902 are connected with the third plug-in part 903 through the second expansion connecting plate 9, the third plug-in part 903 is connected with the main control board 11, and the contactor 10 is connected with the corresponding third terminal 901 and fourth terminal 902; through the modular design of the controllable box 20 and the second expansion connecting plate 9, the second expansion connecting plate 9 can integrate the control signals of multiple contactors 10, and each contactor 10 only needs to be connected with the corresponding third terminal 901 and fourth terminal 902 according to the required number, without the need of connecting each contactor 10 with the main control board 11, thereby facilitating assembly and disassembly, without the need of additional complex wiring, simplifying the structure of the distribution box, improving the flexibility and expandability of the product, and improving the assembly efficiency of the product.

[0040] Embodiment three

[0041] Figure 3 The structural schematic diagram of the distribution box provided by the third embodiment of the present application is shown, the same parts as those in the first embodiment are marked with the same reference numerals, and only the differences will be described below. The distribution box described in the present embodiment further comprises a second CT connecting plate 15 and a third extension connecting plate 17.

[0042] Further, the second CT connecting plate 15 is provided with six plug-in fittings 153, at least one third current transformer 151, and a fifth terminal 152 connected with the third current transformer 151, the at least one fifth terminal 152 is connected with the sixth plug-in fitting 153 through the second CT connecting plate 15, and the sixth plug-in fitting 153 is connected with the fourth plug-in fitting 604 of the first CT connecting plate 6; the third current transformer 151 is used to collect the current signal of the second line 13 introduced into the second circuit breaker 7 by the first line 12, and sequentially transmitted to the main control board 11 through the fifth terminal 152, the sixth plug-in fitting 153, the fourth plug-in fitting 604 and the first plug-in fitting 603.

[0043] Further, the third extension connecting plate 17 is provided with at least one sixth terminal 171 and a seventh plug-in fitting 172 connected therewith through the third extension connecting plate 17, and the seventh plug-in fitting 172 is connected with the fifth plug-in fitting 803 in the first extension connecting plate 8; the sixth terminal 171 is connected with the corresponding second circuit breaker 7, and used to collect the on-off state of the second circuit breaker 7 and sequentially transmitted to the main control board 11 through the seventh plug-in fitting 172, the fifth plug-in fitting 803 and the second plug-in fitting 802, and input a control signal to the second circuit breaker 7 through the main control board 11.

[0044] The fourth embodiment

[0045] Figure 4 The structural schematic diagram of the distribution box provided by the fourth embodiment of the present application is shown, the same parts as those in the third embodiment are marked with the same reference numerals, and only the differences will be described below. The distribution box described in the present embodiment further comprises a controllable box 20, the controllable box 20 is provided with a contactor 10 and a second extension connecting plate 9, and the outgoing terminal of the contactor 10 is connected with the outgoing terminal row 102 arranged in the editing box 1.

[0046] Further, the outgoing line end of the second circuit breaker 7 is connected with the outgoing terminal row 102 arranged in the editing box 1 or with the incoming line end of the contactor 10; through the modular design of the editing box 1, the uncontrolled box 2 and the controllable box 20, the structure of the distribution box is simplified, the outgoing terminal row 102 of the editing box 1 can be connected with the second circuit breaker 7 of the uncontrolled box 2 respectively, or can be connected with the second circuit breaker 7 through the contactor 10 of the controllable box 20, the editability and expandability of the control of the second circuit breaker 7 are increased, and only need to be operated in the editing box 1, the editability and controllability of the distribution box product are improved.

[0047] Further, the second expansion connecting plate 9 is provided with a third plug-in piece 903, at least one third terminal 901 and at least one fourth terminal 902, the third terminal 901 and the fourth terminal 902 are connected with the third plug-in piece 903 through the second expansion connecting plate 9, the third plug-in piece 903 is connected with the main control board 11, and the contactor 10 is connected with the corresponding third terminal 901 and fourth terminal 902; through the modular design of the controllable box 20 and the second expansion connecting plate 9, the second expansion connecting plate 9 can integrate the control signals of multiple contactors 10, without the need that each contactor 10 is connected with the main control board 11 respectively, only need to connect each contactor 10 with the corresponding third terminal 901 and fourth terminal 902 according to the required number, the assembly and disassembly are convenient, without additional complex wiring, the structure of the distribution box is simplified, the flexibility and expandability of the product are improved, and the product assembly efficiency is improved.

[0048] The distribution box provided by the embodiment of the application is more convenient for the production and maintenance of a single module through the modular design and plug-in connection of the editing box, the first CT connecting plate, the first expansion connecting plate, the second expansion connecting plate, the main control board, the uncontrolled box and the controllable box, the installation and connection of the second current transformer, the second circuit breaker and the contactor are more fast and accurate and do not need additional complex lines, the structure of the distribution box is simplified, the editing of the control of the second circuit breaker can be completed only by operating in the editing box, the editability and expandability of the distribution box are improved, different power distribution requirements can be met, and the distribution box and the modules do not need to be connected through complex connecting lines during assembly, the problems of complex strong and weak electric wiring and line mess in the prior art are solved, the distribution box installation and disassembly are more convenient and fast, the assembly and maintenance efficiency of the entire distribution box product is significantly improved, and the production and work efficiency is effectively improved.

[0049] The above merely illustrates the specific embodiments of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A distribution box, characterized in that, include: Editing box (1) and uncontrollable box (2); the editing box (1) is provided with an incoming terminal block (101) and an outgoing terminal block (102); the uncontrollable box (2) is provided with a first circuit breaker (3), a first current transformer (4), a first CT connection plate (6), a second circuit breaker (7), a first expansion connection plate (8) and a main control board (11), the incoming end of the first circuit breaker (3) is connected to the incoming terminal block (101) provided in the editing box (1), the outgoing end of the first circuit breaker (3) is connected to the first line (12), the first current transformer (4) is sleeved on the first line (12) and connected to the main control board (11), the first line (12) is connected to at least one second circuit breaker (7), the first CT connection plate (6) and the first expansion connection plate (8) are respectively plugged into the main control board (11); The first CT connection plate (6) is provided with a first connector (603), at least one second current transformer (601) and a first terminal (602) corresponding to the second current transformer (601). At least one first terminal (602) is connected to the first connector (603) through the first CT connection plate (6). The second current transformer (601) is used to collect the current signal of the second line (13) from the first line (12) to the second circuit breaker (7), and transmit it to the main control board (11) in sequence through the first terminal (602) and the first connector (603).

2. The electrical distribution box of claim 1, wherein, The first expansion connection board (8) is provided with at least one second terminal (801) and a second plug-in (802) connected to it through the first expansion connection board (8). The second terminal (801) is connected to the corresponding second circuit breaker (7) for collecting the opening and closing status of the second circuit breaker (7) and transmitting it to the main control board (11) through the second plug-in (802), and inputting control signals to the second circuit breaker (7) through the main control board (11).

3. The electrical distribution box of claim 1, wherein, It also includes a controllable box (20), in which a contactor (10) and a second extension connection plate (9) are provided, and the output terminal of the contactor (10) is connected to the output terminal block (102) provided in the editing box (1).

4. The electrical distribution box of claim 3, wherein, The output terminal of the second circuit breaker (7) is connected to the output terminal block (102) provided in the editing box (1) or to the input terminal of the contactor (10).

5. The electrical distribution box of claim 3, wherein, The second expansion connection plate (9) is provided with a third connector (903), at least one third terminal (901) and at least one fourth terminal (902). The third terminal (901) and the fourth terminal (902) are connected to the third connector (903) through the second expansion connection plate (9). The third connector (903) is connected to the main control board (11). The contactor (10) is connected to the corresponding third terminal (901) and fourth terminal (902).

6. The distribution box according to claim 1, characterized in that, The distribution box further includes a residual current transformer (5), which is installed in the first line (12) and / or the second line (13) and connected to the main control board (11). And / or, Arc transformer (18), the arc transformer (18) is disposed in the first line (12) and / or the second line (13) and is connected to the main control board (11); And / or, Temperature sensor (19) is located in at least one of the following locations: in the power distribution box, on the first line (12), on the second line (13), or on the line connector, and is connected to the main control board (11).

7. The distribution box according to claim 1, characterized in that, The main control board (11) is provided with at least one processor (111), at least one eighth connector (112) and at least one ninth connector (113).

8. The distribution box according to claim 1, characterized in that, The distribution box also includes a display device (16), which is connected to the main control board (11).

9. The distribution box according to claim 1, characterized in that, The distribution box also includes a backup power supply (14), which is connected to the first line (12) and the main control board (11) respectively, and supplies power to the main control board (11).

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