Communication power supply cabinet

Abstract

The utility model provides a communication power supply cabinet, which comprises a box body, a first alternating current input unit, a second alternating current input unit, an alternating current contactor, a monitoring unit, an alternating current busbar, a rectifying unit and a direct current busbar, the output end of the second alternating current input unit is electrically connected with the second input end of the alternating current contactor, the output end of the alternating current contactor is electrically connected with the alternating current busbar, and the monitoring unit is electrically connected with the communication end of the first alternating current input unit, the communication end of the second alternating current input unit and the communication end of the alternating current contactor. The first alternating current input unit and the second alternating current input unit are electrically connected with the alternating current contactor respectively, so that after the current alternating current input unit is abnormal, the current alternating current input unit can be switched to the other alternating current input unit through the alternating current contactor, the alternating current input units are quickly switched, and the power utilization requirement of a user is met; the performance of the communication power cabinet is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power supply, in particular to a communication power supply cabinet. Background Art

[0002] In an era of rapid development of communication technology, communication facilities usually use power supply devices to provide power. Since power supply devices cannot be exposed to the air, they need to be placed in a cabinet, namely a communication power supply cabinet.

[0003] Traditional communication power cabinets are generally composed of five parts: AC unit, rectifier unit, monitoring unit, DC unit, and battery access unit. The AC unit generally supports a fixed AC input, or two AC inputs that need to be manually switched. When there is an AC abnormality or one AC input is damaged, it is difficult to switch quickly to meet the user's power demand. Utility Model Content

[0004] The utility model provides a communication power supply cabinet, which is used to solve the problem in the prior art that it is difficult to switch quickly when the AC input is abnormal.

[0005] The utility model provides a communication power supply cabinet, comprising: a box body and a power supply device arranged in the box body;

[0006] The power supply device comprises: a first AC input unit, a second AC input unit, an AC contactor, a monitoring unit, an AC busbar, a rectifier unit and a DC busbar;

[0007] The input end of the first AC input unit is electrically connected to the first AC power source, and the output end of the first AC input unit is electrically connected to the first input end of the AC contactor;

[0008] The input end of the second AC input unit is electrically connected to the second AC power source, and the output end of the second AC input unit is electrically connected to the second input end of the AC contactor;

[0009] The output end of the AC contactor is electrically connected to the AC busbar;

[0010] The input end of the rectifier unit is electrically connected to the AC busbar, and the output end of the rectifier unit is electrically connected to the DC busbar;

[0011] The monitoring unit is electrically connected to a communication terminal of the first AC input unit, a communication terminal of the second AC input unit, a communication terminal of the rectifier unit, and a communication terminal of the AC contactor, respectively.

[0012] In a possible implementation, the method further includes: a plurality of DC power distribution units;

[0013] For each DC power distribution unit, an input end of the DC power distribution unit is electrically connected to the DC busbar, an output end of the DC power distribution unit is electrically connected to a load, and a communication end of the DC power distribution unit is communicatively connected to the monitoring unit.

[0014] In a possible implementation, an indicator light corresponding to each DC power distribution unit is also included;

[0015] For each indicator light, a first end of the indicator light is electrically connected to an output end of a DC power distribution unit corresponding to the indicator light, and a second end of the indicator light is grounded.

[0016] In a possible implementation, the device further includes: a battery unit, a battery contactor, and a manual switching button;

[0017] The first end of the battery contactor is electrically connected to the negative electrode of the load, the second end and the third end of the battery contactor are electrically connected to the negative electrode of the first end of the battery unit, and the fourth end of the battery contactor is electrically connected to the first end of the manual switching button;

[0018] The second end of the manual switching button is electrically connected to the positive electrode of the load and the positive electrode of the first end of the battery unit;

[0019] The second end of the battery unit is electrically connected to the DC busbar, and the communication end of the battery unit is communicatively connected to the monitoring unit.

[0020] In a possible implementation, it further includes: an infrared unit disposed outside the box;

[0021] The communication end of the infrared unit is in communication connection with the monitoring system.

[0022] In a possible implementation, the device further includes: a fault light;

[0023] The fault light is communicatively connected to the monitoring system.

[0024] In a possible implementation, the device further includes: a buzzer;

[0025] The buzzer is in communication connection with the monitoring system.

[0026] In a possible implementation, the monitoring unit includes a plurality of monitoring subunits having detachable interfaces, and the connection modes of the plurality of monitoring subunits include one or more of the following:

[0027] The communication end of the first AC input unit, the communication end of the second AC input unit, the communication end of the AC contactor and the communication end of the rectifier unit are communicatively connected to the first monitoring subunit;

[0028] The communication end of the battery unit is communicatively connected with the second monitoring subunit;

[0029] The communication terminal of the DC power distribution unit and each indicator light are communicatively connected with the third monitoring subunit;

[0030] The communication end of the infrared unit, the fault light and the buzzer are communicatively connected with the fourth monitoring subunit;

[0031] Among them, each monitoring sub-unit is communicatively connected.

[0032] In a possible implementation, it also includes an AC output unit;

[0033] The input end of the AC output unit is electrically connected to the AC busbar, the output end of the AC output unit is electrically connected to the AC device, and the communication end of the AC output unit is communicatively connected to the monitoring unit.

[0034] In a possible implementation, the monitoring unit further includes a power supply board, on which a power supply unit for supplying power to the monitoring unit is provided;

[0035] The input end of the power supply unit is electrically connected to the output end of the AC output unit, and the output end of the power supply unit is electrically connected to the power supply end of the monitoring unit.

[0036] The beneficial effects of the utility model are as follows:

[0037] The utility model provides a communication power supply cabinet, comprising: a box body and a power supply device arranged in the box body; the power supply device comprises: a first AC input unit, a second AC input unit, an AC contactor, a monitoring unit, an AC busbar, a rectifier unit and a DC busbar; the input end of the first AC input unit is electrically connected to the first AC power supply, and the output end of the first AC input unit is electrically connected to the first input end of the AC contactor; the input end of the second AC input unit is electrically connected to the second AC power supply, and the output end of the second AC input unit is electrically connected to the second input end of the AC contactor; the output end of the AC contactor is electrically connected to the AC busbar; the input end of the rectifier unit is electrically connected to the AC busbar, and the output end of the rectifier unit is electrically connected to the DC busbar; the monitoring unit is electrically connected to the communication end of the first AC input unit, the communication end of the second AC input unit and the communication end of the AC contactor respectively. Since the first AC input unit and the second AC input unit are electrically connected to the AC contactor respectively, after the current AC input unit is abnormal, it can be switched to another AC input unit through the AC contactor, thereby realizing the rapid switching of the AC input unit, meeting the power demand of the user, and improving the performance of the communication power supply cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0039] Figure 1 A structural diagram of a communication power cabinet provided for related technology;

[0040] Figure 2 A circuit diagram of a communication power supply cabinet provided in an embodiment of the utility model;

[0041] Figure 3 A structural diagram of a communication power supply cabinet provided in an embodiment of the utility model;

[0042] Figure 4 A circuit diagram of another communication power supply cabinet provided by an embodiment of the utility model;

[0043] Figure 5 A circuit diagram of another communication power supply cabinet provided by an embodiment of the utility model;

[0044] Figure 6 A circuit diagram of another communication power supply cabinet provided by an embodiment of the utility model;

[0045] Figure 7 A logic diagram of a manual switching button provided in an embodiment of the utility model;

[0046] Figure 8 A circuit diagram of another communication power supply cabinet provided by an embodiment of the utility model;

[0047] Fig. 9 A circuit diagram of another communication power supply cabinet provided by an embodiment of the utility model;

[0048] Fig.10 A circuit diagram of another communication power supply cabinet provided by an embodiment of the utility model;

[0049] Fig.11 A circuit diagram of another communication power supply cabinet provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0051] In the following, the terms "first" and "second" are used for descriptive purposes only and shall not be understood to imply or suggest relative importance or implicitly indicate the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, unless otherwise specified, "multiple" means two or more.

[0052] like Figure 1 As shown, it is a structural diagram of a communication power cabinet provided by the related technology, from Figure 1 It can be seen that the communication power supply cabinet includes an AC unit 101, a monitoring unit 102, a rectifier unit 103, a DC unit 104, and a battery access unit 105. In the prior art, the AC unit 101 generally supports a fixed AC input, or two AC inputs that need to be manually switched. When an AC power abnormality occurs or one AC input is damaged, it is difficult to switch quickly and the user's power demand cannot be met.

[0053] Based on the above problems, the present utility model provides a communication power supply cabinet, such as Figure 2 As shown, it is a circuit diagram of a communication power cabinet provided by an embodiment of the utility model, and the communication power cabinet includes: a box body (not shown in the figure) and a power supply device arranged in the box body; the power supply device includes: a first AC input unit 201, a second AC input unit 202, an AC contactor 203, a monitoring unit 204, an AC busbar 205, a rectifier unit 206 and a DC busbar 207;

[0054] An input end of the first AC input unit 201 is electrically connected to a first AC power source, and an output end of the first AC input unit 201 is electrically connected to a first input end of an AC contactor 203;

[0055] The input end of the second AC input unit 202 is electrically connected to the second AC power source, and the output end of the second AC input unit 202 is electrically connected to the second input end of the AC contactor 203;

[0056] The output end of the AC contactor 203 is electrically connected to the AC busbar 205;

[0057] The input end of the rectifier unit 206 is electrically connected to the AC busbar 205, and the output end of the rectifier unit 206 is electrically connected to the DC busbar 207;

[0058] The monitoring unit 204 is electrically connected to a communication terminal of the first AC input unit 201 , a communication terminal of the second AC input unit 202 , a communication terminal of the rectifier unit 206 , and a communication terminal of the AC contactor 203 , respectively.

[0059] In the embodiment of the utility model, the input end of the first AC input unit 201 is electrically connected to the first AC power supply, and the output end of the first AC input unit 201 is electrically connected to the first input end of the AC contactor 203; the input end of the second AC input unit 202 is electrically connected to the second AC power supply, and the output end of the second AC input unit 202 is electrically connected to the second input end of the AC contactor 203; the output end of the AC contactor 203 is electrically connected to the AC busbar 205; the input end of the rectifier unit 206 is electrically connected to the AC busbar 205, and the output end of the rectifier unit 206 is electrically connected to the DC busbar 207; the monitoring unit 204 is electrically connected to the communication end of the first AC input unit 201, the communication end of the second AC input unit 202, the communication end of the rectifier unit 206 and the communication end of the AC contactor 203, respectively. In the embodiment of the utility model, the first AC input unit 201 and the second AC input unit 202 are connected in parallel to the AC contactor 203, and the monitoring unit 204 can control the switching of the first AC input unit 201 and the second AC input unit 202 by the AC contactor 203 according to the current output conditions of the first AC input unit 201 and the second AC input unit 202, so as to realize the rapid switching of the first AC input unit 201 and the second AC input unit 202 in the case of abnormal AC input, so as to meet the power demand of the user.

[0060] In a specific embodiment, the first AC input unit 201 can input the AC power output by the first AC power supply to the AC busbar 205 through the AC contactor 203; the second AC input unit 202 can input the AC power output by the second AC power supply to the AC busbar 205 through the AC contactor 203; the AC contactor 203 can switch the first AC input unit 201 and the second AC input unit 202 to ensure that the AC power output by only one AC input unit is output to the AC busbar 205; the monitoring unit 204 is used to monitor the first AC input unit 201, the second AC input unit 202, the rectifier unit 206 and the AC contactor 203, judge the status of the first AC input unit 201 and the second AC input unit 202, and control the AC contactor 203 to electrically connect the first AC input unit 201 or the second AC input unit 202 to the AC contactor 203; the rectifier unit 206 is used to convert the AC power output by the AC busbar 205 into DC power and input it into the DC busbar 207.

[0061] In a feasible implementation manner, if the voltage of the first AC input unit 201 is within a normal range, the monitoring unit 204 controls the AC contactor 203 to normally close the switch on the first AC input unit 201 side, so that the first AC input unit 201 is electrically connected to the AC busbar 205; if the voltage output by the first AC input unit 201 is abnormally overvoltage, undervoltage, or equalization, and the voltage output by the second AC input unit 202 is within a normal range, the monitoring unit 204 determines the current conditions of the first AC input unit 201 and the second AC input unit 202, and passes The monitoring unit 204 controls the AC contactor 203 to automatically switch to the switch on the second AC input unit 202 side to disconnect the connection between the first AC input unit 201 and the AC busbar 205, and connect the connection between the second AC input unit 202 and the AC busbar 205; if the first AC input unit 201 returns to normal, the monitoring unit 204 controls the AC contactor 203 to switch back to the switch on the first AC input unit 201 side, that is, disconnect the connection between the second AC input unit 202 and the AC busbar 205, and connect the connection between the first AC input unit 201 and the AC busbar.

[0062] In addition, the rectifier unit 206 and the monitoring unit 204 can verify each other through an internal verification protocol to ensure the unique adaptability of the rectifier unit 206 and the monitoring unit 204 and avoid mixing different products.

[0063] like Figure 3 As shown, it is a structural diagram of a communication power supply cabinet provided by an embodiment of the utility model, wherein the first AC input unit and the second AC input unit can be arranged side by side in the cabinet, and the monitoring unit is arranged in the middle position of the cabinet to facilitate communication connection with other units.

[0064] In the embodiment of the present utility model, Figure 4 As shown, it is a circuit diagram of another communication power cabinet provided by an embodiment of the utility model. The power supply device in the communication power cabinet further includes: a plurality of DC distribution units 301;

[0065] For each DC power distribution unit 301 , an input end of the DC power distribution unit 301 is electrically connected to the DC busbar 207 , an output end of the DC power distribution unit 301 is electrically connected to a load, and a communication end of the DC power distribution unit 301 is communicatively connected to the monitoring unit 204 .

[0066] In a specific embodiment, the DC output part of the power cabinet meets the user's different configuration requirements for DC loads by configuring multiple DC distribution units 301. For example, taking the configuration of 4 DC distribution units, and each DC distribution unit can meet the load requirements of 100A, 200A, 300A, and 400A respectively as an example, if a load of 300A needs to be configured, two DC distribution units that can meet the load requirements of 100A and 200A can be selected, or a DC distribution unit that can meet the load requirements of 300A can be selected. In the application, the configuration can be flexibly selected according to the needs, and more configuration types can also be set.

[0067] The communication end of the DC power distribution unit 301 is in communication connection with the monitoring unit 204 , and the monitoring unit 204 can monitor the state of power distribution of the DC power distribution unit to the load in the background.

[0068] In one embodiment, each DC power distribution unit may also be provided with an indicator light, which can intuitively reflect the current state of the DC power distribution unit distributing power to the load.

[0069] For example, taking the configuration of 4 DC distribution units as an example, each DC distribution unit is composed of several circuit breakers. An indicator light can be configured corresponding to each circuit breaker to monitor the current status.

[0070] like Figure 5 As shown, it is a circuit diagram of another communication power supply cabinet provided by an embodiment of the utility model. Figure 4 In the figure, each DC distribution unit 301 (DC distribution unit 1, DC distribution unit 2 ... DC distribution unit n) corresponds to an indicator LED (LED1, LED2 ... LEDn), the anode of indicator LED1 is electrically connected to the output end of DC distribution unit 1, the cathode of indicator LED1 is grounded, ..., the anode of indicator LEDn is electrically connected to the output end of DC distribution unit n, and the cathode of indicator LEDn is grounded. When DC distribution unit 1 supplies power to the load, the output end of DC distribution unit 1 has current output, and the indicator LED1 connected to DC distribution unit 1 is lit.

[0071] like Figure 6 As shown, it is a circuit diagram of another communication power cabinet provided by an embodiment of the utility model. The battery device in the communication power cabinet provided by the embodiment of the utility model also includes a battery unit 401, and the battery unit 401 is electrically connected to the DC busbar 207. When the AC input is normal, the DC busbar 207 supplies power to the load while charging the battery unit 401. When the AC power is off, the battery unit 401 is used to supply power to the DC distribution unit 301 and serve as a backup protection for supplying power to the load.

[0072] like Figure 7As shown, it is a logic diagram of a manual switching button provided in an embodiment of the utility model. The power supply device in the communication power supply cabinet also includes a battery contactor 402 and a manual switching button 403; the DC busbar 207 includes a positive DC busbar and a negative DC busbar;

[0073] The first end of the battery contactor 402 is electrically connected to the negative electrode of the DC power distribution unit 301, the second end of the battery contactor 402 and the third end of the battery contactor 402 are electrically connected to the negative electrode of the battery unit 401, and the fourth end of the battery contactor 402 is electrically connected to the first end of the manual switching button 403;

[0074] The second end of the manual switching button 403 is electrically connected to the positive electrode of the load and the positive electrode of the battery unit 401;

[0075] The positive electrode of the battery unit 401 is electrically connected to the positive DC busbar, the negative electrode of the battery unit 401 is electrically connected to the negative DC busbar, and the communication end of the battery unit 401 is communicatively connected to the monitoring unit.

[0076] In a specific embodiment, the battery contactor 402 is communicatively connected to the monitoring unit 204, and the monitoring unit 204 monitors the battery voltage of the battery unit 401. When an abnormal situation such as low battery voltage occurs, the switch of the battery contactor 402 is disconnected, and the battery unit 401 stops supplying power to the DC distribution unit 301. If the staff presses the manual switching button 403, the switch of the battery contactor 402 is closed to ensure emergency power supply to the load.

[0077] In one embodiment, if Figure 8 The circuit diagram of another communication power cabinet provided by the embodiment of the utility model is shown in FIG.

[0078] In a specific embodiment, the power cabinet of the utility model can adopt a glass door. When the infrared unit 601 detects a person passing by, it triggers the display screen lighting function, and the user can conveniently observe the operating status of the power cabinet through the glass door of the power cabinet.

[0079] It should be noted that the distance of the infrared unit 601 sensing the human body and the screen lighting time of the display screen can be adjusted.

[0080] In one embodiment, if Fig. 9As shown, it is a circuit diagram of another communication power supply cabinet provided by an embodiment of the utility model. The communication power supply cabinet provided by an embodiment of the utility model may also include: a fault light 701; the fault light 701 is communicatively connected with the monitoring unit 204. When the monitoring unit 204 detects that the AC input of the AC power or the DC output of the DC power reaches the preset protection voltage range, the monitoring unit 204 controls the fault light 701 to light up, and at the same time shuts off the abnormal AC input or DC output. For example, if the monitoring unit 204 detects that the AC input of the second AC input unit 201 reaches the preset protection voltage range, the monitoring unit 204 controls the fault light 701 to light up, and at the same time shuts off the second AC input unit 201 to ensure the safety of the system, and cannot be automatically restored, and needs to be manually repaired before it can resume work.

[0081] In another embodiment, if Fig.10 As shown, it is a circuit diagram of another communication power supply cabinet provided by an embodiment of the utility model. The communication power supply cabinet of another embodiment of the utility model may also include: a buzzer 801; the buzzer 801 is communicatively connected with the monitoring unit 204. When the monitoring unit 204 detects that the AC input AC power or the DC output DC power reaches the preset protection voltage range, the monitoring unit 204 controls the fault light 701 to light up, controls the buzzer 801 to start, and shuts off the abnormal AC input or DC output. For example, if the monitoring unit 204 detects that the DC power output by the DC distribution unit 301 reaches the preset protection voltage range, the monitoring unit 204 controls the fault light 701 to light up, and the buzzer 801 is started, and the DC distribution unit 301 is shut down to ensure the safety of the system, and it cannot be automatically restored, and manual maintenance is required to resume work.

[0082] In addition, the monitoring unit includes a plurality of monitoring subunits with detachable interfaces, and the connection mode of the plurality of monitoring subunits includes one or more of the following:

[0083] The communication end of the first AC input unit 201, the communication end of the second AC input unit 202, the communication end of the AC contactor 203 and the communication end of the rectifier unit 206 are communicatively connected to the first monitoring subunit;

[0084] The communication terminal of the battery unit 401 is in communication connection with the second monitoring subunit;

[0085] The communication terminal of the DC power distribution unit 301 and each indicator light are communicatively connected with the third monitoring subunit;

[0086] The communication end of the infrared unit 601, the fault light 701 and the buzzer 801 are in communication connection with the fourth monitoring subunit;

[0087] Among them, each monitoring sub-unit is communicatively connected.

[0088] In a specific implementation, the first monitoring subunit is used to monitor the first AC input unit 201, the second AC input unit 202, the rectifier unit 206 and the AC contactor 203, determine the status of the first AC input unit 201 and the second AC input unit 202, and control the AC contactor 203 so that the first AC input unit 201 or the second AC input unit 202 is electrically connected to the AC contactor 203; the second monitoring subunit is used to monitor and control the battery unit 401 to supply power to the DC distribution unit 301, and control the battery unit 401 as a backup protection for supplying power to the load; the third monitoring subunit is used to monitor the status of the DC distribution unit 301 distributing power to the load in the background; the fourth monitoring subunit is used to monitor the operating status of the infrared unit 601, and control the fault light 701 to light up and the buzzer 801 to start when it is detected that the DC power reaches the preset protection voltage range.

[0089] In a specific implementation, when a monitoring subunit fails, since each monitoring subunit adopts a detachable interface, there is no need to shut down the entire power cabinet, and only the failed monitoring subunit needs to be removed separately.

[0090] In the embodiment of the present utility model, Fig.11 As shown, the power supply device of the communication power supply cabinet in the embodiment of the utility model may also include an AC output unit 901;

[0091] The input end of the AC output unit 901 is electrically connected to the AC busbar 205 , the output end of the AC output unit 901 is electrically connected to the AC device, and the communication end of the AC output unit 901 is communicatively connected to the monitoring unit 204 .

[0092] The AC output unit 901 is specifically used for powering on-site AC equipment, where the AC equipment may include AC air conditioners, host computer equipment, lighting equipment, and the like.

[0093] It should be noted that the monitoring unit 204 may also include a power supply board, on which a power supply unit for supplying power to the monitoring unit is provided; the input end of the power supply unit is electrically connected to the output end of the AC output unit 901, and the output end of the power supply unit is electrically connected to the power supply end of the monitoring unit 204.

[0094] Among them, the AC output unit 901 is used to provide AC power to the power supply unit on the power supply board, and the power supply board is used to power the monitoring unit 204 separately. When the system is missing a phase, it can still start normally, thereby improving the availability of the equipment under harsh conditions.

[0095] The utility model provides a communication power supply cabinet, comprising: a box body and a power supply device arranged in the box body; the power supply device comprises: a first AC input unit, a second AC input unit, an AC contactor, a monitoring unit, an AC busbar, a rectifier unit and a DC busbar; the input end of the first AC input unit is electrically connected to the first AC power supply, and the output end of the first AC input unit is electrically connected to the first input end of the AC contactor; the input end of the second AC input unit is electrically connected to the second AC power supply, and the output end of the second AC input unit is electrically connected to the second input end of the AC contactor; the output end of the AC contactor is electrically connected to the AC busbar; the input end of the rectifier unit is electrically connected to the AC busbar, and the output end of the rectifier unit is electrically connected to the DC busbar; the monitoring unit is electrically connected to the communication end of the first AC input unit, the communication end of the second AC input unit and the communication end of the AC contactor respectively. Since the first AC input unit and the second AC input unit are electrically connected to the AC contactor respectively, after the current AC input unit is abnormal, it can be switched to another AC input unit through the AC contactor, thereby realizing the rapid switching of the AC input unit, meeting the power demand of the user, and improving the performance of the communication power supply cabinet.

[0096] Those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include these modifications and variations.

Claims

1. A communication power supply cabinet, characterized in that: include: A box body and a power supply device arranged in the box body; The power supply device comprises: a first AC input unit, a second AC input unit, an AC contactor, a monitoring unit, an AC busbar, a rectifier unit and a DC busbar; The input end of the first AC input unit is electrically connected to the first AC power source, and the output end of the first AC input unit is electrically connected to the first input end of the AC contactor; The input end of the second AC input unit is electrically connected to the second AC power source, and the output end of the second AC input unit is electrically connected to the second input end of the AC contactor; The output end of the AC contactor is electrically connected to the AC busbar; The input end of the rectifier unit is electrically connected to the AC busbar, and the output end of the rectifier unit is electrically connected to the DC busbar; The monitoring unit is electrically connected to a communication terminal of the first AC input unit, a communication terminal of the second AC input unit, a communication terminal of the rectifier unit, and a communication terminal of the AC contactor, respectively.

2. The power cabinet according to claim 1, characterized in that: Also includes: Multiple DC power distribution units; For each DC power distribution unit, an input end of the DC power distribution unit is electrically connected to the DC busbar, an output end of the DC power distribution unit is electrically connected to a load, and a communication end of the DC power distribution unit is communicatively connected to the monitoring unit.

3. The power cabinet according to claim 2, characterized in that: Also included are indicator lights corresponding to each DC power distribution unit; For each indicator light, a first end of the indicator light is electrically connected to an output end of a DC power distribution unit corresponding to the indicator light, and a second end of the indicator light is grounded.

4. The power cabinet according to claim 3, characterized in that: Also includes: Battery unit, battery contactor and manual switching button; The first end of the battery contactor is electrically connected to the negative electrode of the load, the second end and the third end of the battery contactor are electrically connected to the negative electrode of the first end of the battery unit, and the fourth end of the battery contactor is electrically connected to the first end of the manual switching button; The second end of the manual switching button is electrically connected to the positive electrode of the load and the positive electrode of the first end of the battery unit; The second end of the battery unit is electrically connected to the DC busbar, and the communication end of the battery unit is communicatively connected to the monitoring unit.

5. The power cabinet according to claim 4, characterized in that: Also includes: An infrared unit disposed outside the box; The communication end of the infrared unit is in communication connection with the monitoring unit.

6. The power cabinet according to claim 5, characterized in that: Also includes: Fault light; The fault light is communicatively connected to the monitoring unit.

7. The power cabinet according to claim 6, characterized in that: Also includes: buzzer; The buzzer is communicatively connected with the monitoring unit.

8. The power cabinet according to claim 7, characterized in that: The monitoring unit includes a plurality of monitoring subunits with detachable interfaces, and the connection modes of the plurality of monitoring subunits include one or more of the following: The communication end of the first AC input unit, the communication end of the second AC input unit, the communication end of the AC contactor and the communication end of the rectifier unit are communicatively connected to the first monitoring subunit; The communication end of the battery unit is communicatively connected with the second monitoring subunit; The communication terminal of the DC power distribution unit and each indicator light are communicatively connected with the third monitoring subunit; The communication end of the infrared unit, the fault light and the buzzer are communicatively connected with the fourth monitoring subunit; Among them, each monitoring sub-unit is communicatively connected.

9. The power supply cabinet according to any one of claims 1 to 8, characterized in that: Also includes an AC output unit; The input end of the AC output unit is electrically connected to the AC busbar, the output end of the AC output unit is electrically connected to the AC device, and the communication end of the AC output unit is communicatively connected to the monitoring unit.

10. The power cabinet according to claim 9, characterized in that: The monitoring unit further comprises a power supply board, on which a power supply unit for supplying power to the monitoring unit is arranged; The input end of the power supply unit is electrically connected to the output end of the AC output unit, and the output end of the power supply unit is electrically connected to the power supply end of the monitoring unit.

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