Modularized power supply circuit, equipment, electrical system and cabinet

Abstract

The utility model provides a modularized power supply circuit, equipment, an electrical system and a cabinet, and relates to the technical field of road power supply, the modularized power supply circuit comprises a power supply interface, a rectification module, a monitoring module, a communication module and at least one inversion module, the output end of the rectifier module is connected with the input end of each inverter module; the communication module comprises first communication units of which the number is the same as that of the inversion modules, and the input end of each first communication unit is connected with the output end of a non-repeated inversion module; the monitoring module is connected between each first communication unit and the corresponding inversion module so as to control conduction between each first communication unit and the corresponding inversion module. According to the utility model, the problem of high manual installation and maintenance cost in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the field of road power supply, and in particular to a modular power supply circuit, equipment, electrical system and cabinet. Background Art

[0002] As highways become more and more popular and intelligent, there are more and more electronic equipment on highways, including cameras, auxiliary power supply functions, meteorological equipment, broadcasting equipment, radar equipment, local edge computing storage equipment, information exchange equipment, network transmission equipment, etc. Special cabinets for highways are often installed along the highways. There will be many electronic devices inside the cabinets, which are used to monitor and transmit information on the highway and provide power for various lamps and sound equipment on the highway. As a result, many cabinets currently have messy internal electrical equipment classification and cumbersome wiring, and cannot accurately and effectively regulate the cabinet load, which brings many unreasonable places to the later maintenance and increases the cost of subsequent maintenance.

[0003] Therefore, there is an urgent need for an effective and reasonable solution to provide a proper solution for the above-mentioned cabinet with intelligent working mode. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a modular power supply circuit, equipment, electrical system and cabinet, which solve the problem of high cost of manual installation and maintenance in the prior art.

[0005] At least one embodiment of the present utility model provides a modular power supply circuit, including: a power supply interface, a rectifier module, a monitoring module, a communication module and at least one inverter module, wherein:

[0006] The power interface is connected to the input end of the rectifier module, and the output end of the rectifier module is connected to the input end of each inverter module;

[0007] The communication module includes the same number of first communication units as the inverter modules, and an input end of each of the first communication units is connected to an output end of a non-repeated inverter module;

[0008] The monitoring module is connected between each of the first communication units and the corresponding inverter module to control the conduction between each of the first communication units and the corresponding inverter module.

[0009] The technical solution disclosed by the utility model has at least the following beneficial effects:

[0010] By adding multiple inverter modules to this circuit, different voltages can be provided for devices at multiple different voltage levels. At the same time, when the load is high, the monitoring module can control the conduction between the communication module and the inverter module, control the power on and off of devices at the same voltage level, and more reasonably regulate the overall load of the cabinet, reducing the burden of subsequent maintenance and correspondingly reducing costs.

[0011] In a modular power supply circuit provided in one embodiment of the present invention, the communication module also includes a second communication unit, an input end of the second communication unit is connected to the rectifier module, and the monitoring module is connected between the second communication unit and the rectifier module to control the conduction between the second communication unit and the rectifier module.

[0012] The technical solution disclosed by the utility model has at least the following beneficial effects:

[0013] By directly connecting the second communication unit to the rectifier module, the second communication unit can provide the voltage of the output end of the rectifier module, so as to reduce the number of inverter modules and reduce the cabinet cost.

[0014] In a modular power supply circuit provided in one embodiment of the utility model, the circuit further includes: a battery interface, and the battery interface is connected to the output end of the rectifier module.

[0015] The technical solution disclosed by the utility model has at least the following beneficial effects:

[0016] Through the newly set battery interface, when in use, you can connect to an independent power supply through the battery interface, and charge the independent power supply through the rectifier module. When the power interface is powered off, the independent power supply can still provide power supply of the same voltage to ensure the normal operation of the cabinet.

[0017] In a modular power supply circuit provided in one embodiment of the present utility model, the circuit further includes: a dynamic ring sensor unit, and the dynamic ring sensor unit is connected to the monitoring module and each of the inverter modules.

[0018] The technical solution disclosed by the utility model has at least the following beneficial effects:

[0019] By using the above-mentioned dynamic ring sensor unit, sensors can be used to detect information around the cabinet. When abnormal information of the cabinet is detected, the dynamic ring sensor unit can control the monitoring module to shut down the conduction between some inverter modules and communication modules to avoid danger to the cabinet.

[0020] At least one embodiment of the present utility model further provides a modular power supply device, comprising a housing, and a modular power supply circuit as described above configured in the housing, wherein the housing is provided with a bracket for detachable installation with a cabinet.

[0021] The technical solution disclosed by the utility model has at least the following beneficial effects:

[0022] By wrapping the above circuit with a shell, the above circuit can be installed in the cabinet more conveniently. While having a communication module output interface that can provide different voltages, it ensures that the wiring in the cabinet is neat and uniform, makes the working voltage classification of each component clearer, and reduces the burden of subsequent maintenance.

[0023] At least one embodiment of the present utility model further provides an electrical system for modular power supply, which includes an interlock switch and a modular power supply device as described above, wherein:

[0024] The interlock switch has a first input end for connecting to a mains power input, and a second input end for connecting to an oil engine input, and an output end of the interlock switch is connected to the power interface.

[0025] The technical solution disclosed by the utility model has at least the following beneficial effects:

[0026] Through this interlock switch, the input of city power or gasoline engine on the highway can be completed, and interlock control can be realized, that is, the input of the fuel generator is invalid when switching to city power, and the city power is invalid when the fuel generator is input, which can effectively solve the problem of mutual interference between the currents of the two.

[0027] In one embodiment of the present invention, an electrical system for modular power supply further includes an energy storage battery, which is connected to the battery interface, and the output voltage of the energy storage battery is configured to be consistent with the output voltage of the output end of the rectifier module.

[0028] The technical solution disclosed by the utility model has at least the following beneficial effects:

[0029] By using the energy storage battery as a backup power source, the UPS backup power method commonly used in power networks is eliminated, the failure points are reduced, and the system is made more stable and reliable.

[0030] In one embodiment of the present utility model, an electrical system for modular power supply further includes an Ethernet switch, an edge computer and a serial port server connected to the communication module, wherein:

[0031] The Ethernet switch, edge computer and serial port server are connected in pairs, and the Ethernet switch is also connected to a fiber optic wiring unit.

[0032] The technical solution disclosed by the utility model has at least the following beneficial effects:

[0033] Ethernet switches, serial port servers and fiber optic wiring units can enable the remote control center to exchange and transmit information inside the cabinet; the edge computer can calculate and store information of each electronic component in the cabinet, store it locally, and retrieve data at the control center when needed, making it easier for the remote control center to understand the status inside the cabinet.

[0034] At least one embodiment of the present utility model further provides a cabinet, comprising a cabinet body, and an electrical system for modular power supply as described above, which is configured in the cabinet body, wherein:

[0035] The housing is detachably mounted in the cabinet via a bracket.

[0036] The technical solution disclosed by the utility model has at least the following beneficial effects:

[0037] By installing the above electrical system, the space inside the cabinet can be rationally planned using modular power supply equipment, and by controlling the power on and off of loads at different levels, the load operation of the cabinet can be effectively regulated, thereby reducing the subsequent maintenance burden.

[0038] At least one embodiment of the utility model further provides a cabinet, further comprising a cabinet door, a lamp bead and a travel switch, wherein the cabinet door is openably configured on the cabinet body, the lamp bead is connected to the travel switch, and the travel switch is connected to the power interface and used to monitor the travel of the cabinet door.

[0039] The technical solution disclosed by the utility model has at least the following beneficial effects:

[0040] By monitoring the opening of the cabinet door through the travel switch, the lamp beads can be used to provide light in time when the maintenance personnel open the cabinet, and the lamp beads can be turned off after the cabinet door is opened and closed to save power. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 This is a schematic diagram of the connection relationship between modules of a modular power supply circuit of the utility model;

[0042] Figure 2 A circuit diagram of a modular power supply circuit according to the utility model;

[0043] Figure 3 A circuit diagram of an electrical system for modular power supply according to the utility model;

[0044] Figure 4 This is an exploded diagram of a modular power supply device according to the utility model;

[0045] Figure 5 The utility model is a structural schematic diagram of a cabinet.

[0046] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0047] 1. Cabinet;

[0048] 10. Modular power supply equipment;

[0049] 101, bottom plate; 102, power switch; 103, terminal block; 104, 220V output channel; 105, 24V output channel; 106, 48V output channel; 107, 12V first output channel; 108, 12V second output channel; 109, first mounting ear; 110, front panel; 111, rectifier module; 112, display screen; 113, dynamic ring sensor information collection panel; 114, top plate; 115, dynamic ring unit limit bracket; 116. Dynamic ring sensor unit; 117. First fan; 118. Communication adapter; 119. Second fan; 120. Monitoring module; 121. Rear cover; 122. First support plate; 123. Second support plate; 124. Third support plate; 125. Inverter protection plate; 126. First L guide rail; 127. Second L guide rail; 128. First inverter module; 129. Second inverter module; 130. Second mounting ear; 131. Third inverter module. DETAILED DESCRIPTION

[0050] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0051] In the description of the present invention, it is necessary to understand that the terms "center", "longitudinal", "lateral" and "center" are used in conjunction with each other. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples without contradiction.

[0052] A modular power supply circuit includes: a power supply interface, a rectifier module 111, a monitoring module 120, a communication module and at least one inverter module, wherein:

[0053] The power interface is connected to the input end of the rectifier module 111. In this embodiment, since the power interface is usually connected to an AC voltage of 220V, the rectifier module 111 is used to rectify the 220V AC voltage into a DC voltage of 48V and output it. The output end of the rectifier module 111 is connected to the input end of the inverter module, wherein the number of inverter modules can be changed accordingly according to the cabinet classification requirements. In this embodiment, three inverter modules are taken as examples, which are a first inverter module 128 for converting a 48V voltage into a 220V voltage, a second inverter module 129 for converting a 48V voltage into a 12V voltage, and a third inverter module 131 for converting a 48V voltage into a 24V voltage;

[0054] The communication module includes the same number of first communication units as the inverter modules, and the input end of each first communication unit is connected to the output end of a non-repeated inverter module, wherein the first communication unit includes a PDU 220V channel module, a DCDU 12V channel module and a DCDU 24V channel module, wherein the input end of the PDU 220V channel module is connected to the output end of the first inverter module 128 through a first relay, the DCDU 12V channel module is connected to the second inverter module 129 through a second relay, and the DCDU 24V channel module is connected to the third inverter module 131 through a third relay;

[0055] The monitoring module 120 is connected between each first communication unit and the corresponding inverter module through a relay to control the conduction between each first communication unit and the corresponding inverter module. In this embodiment, the monitoring module 120 is connected to the PDU 220V channel module through the first relay, connected to the DCDU 12V channel module through the second relay, and connected to the DCDU 24V channel module through the third relay. At this time, the monitoring module 120 can control the first relay, the second relay and the third relay to control the on and off of the PDU 220V channel module, the DCDU 12V channel module and the DCDU 24V channel module respectively through the instructions issued by the superior control center, thereby controlling the on and off of the output channels under different voltages of this circuit;

[0056] After adopting the above scheme, by adding multiple inverter modules in this circuit, the 48V DC power can be inverted into three voltages of 12\24\220V, and different devices inside the cabinet can be powered by different voltages. At the same time, when the load is high, the monitoring module 120 can be used to control the conduction between the communication module and the inverter module, control the power on and off of the devices under the same voltage level, and more reasonably regulate the overall load of the cabinet, reduce the burden of subsequent maintenance, and reduce costs accordingly.

[0057] Furthermore, the communication module also includes a second communication unit, wherein the second communication unit is a DCDU 48V channel module, the input end of the DCDU 48V channel module is connected to the output end of the rectifier module 111, and the monitoring module 120 is connected to the output end of the DCDU 48V channel module through a fourth relay to control the conduction between the second communication unit and the rectifier module 111.

[0058] After adopting the above solution, by directly connecting the second communication unit to the rectifier module 111, the second communication unit can provide the voltage of the output end of the rectifier module 111, so as to reduce the number of inverter modules and reduce the cabinet cost.

[0059] Furthermore, the circuit further comprises: a battery interface, which is connected to the output end of the rectifier module 111 .

[0060] After adopting the above scheme, a new battery interface is set up. When in use, an independent power supply can be connected through the battery interface, and the independent power supply can be charged through the rectifier module 111. When the power supply interface is powered off, the same voltage can still be provided through the independent power supply to ensure the normal operation of the cabinet.

[0061] In a modular power supply circuit provided in one embodiment of the utility model, the circuit also includes: a dynamic ring sensor unit 116, which is connected to the monitoring module 120 and each inverter module, wherein the dynamic ring sensor unit 116 is specifically connected to a door magnetic sensor, a smoke sensor, two temperature and humidity sensors, and a water immersion sensor to respectively monitor the opening and closing of the cabinet door, whether there is smoke in the cabinet, the temperature and humidity in various places in the cabinet, whether water enters the cabinet, etc., and through the above-mentioned sensor information, reasonably control the on and off between the channel module and the inverter module to protect the cabinet.

[0062] After adopting the above scheme, the above-mentioned dynamic ring sensor unit 116 can be used to detect information around the cabinet using sensors. When abnormal information of the cabinet is detected, the dynamic ring sensor unit 116 can control the monitoring module 120 to cut off the conduction between some inverter modules and communication modules to avoid danger to the cabinet.

[0063] Furthermore, the dynamic ring sensor unit 116 also includes a fan controller, which can communicate with an external fan via RS485 to ensure the balance of the temperature inside the cabinet;

[0064] Furthermore, the power interface is also connected to a lightning protection module to protect the circuit from being affected by lightning.

[0065] More preferably, the output end of the channel module is connected to multiple outputs, specifically, the output ends of the DCDU 12V channel module, the DCDU 24V channel module and the DCDU 48V channel module are all connected to multiple outputs, each output has a MOS disconnection function, and each channel module can collect the output current of each channel, and complete the individual information feedback and switch control of each channel through information interaction with the monitoring module 120. When the inverter module is fully loaded, the output of a single channel can be closed according to the priority of the importance of the electrical appliances to meet the normal operation of higher priority components.

[0066] The utility model further provides a modular power supply device 10, comprising a housing, and a modular power supply circuit as described above, which is arranged in the housing, wherein a bracket for detachably mounting with a cabinet is provided on the housing.

[0067] After adopting the above scheme, the above circuit can be more conveniently installed in the cabinet by wrapping the above circuit with a shell. While having a communication module output terminal interface that can provide different voltages, it ensures that the wiring in the cabinet is neat and uniform, making the working voltage classification of each component cleaner and reducing the subsequent maintenance burden;

[0068] Specifically, the modular power supply device 10 includes a bottom plate 101, a power switch 102, a terminal block 103, a 12V first output channel 107, a 12V second output channel 108, a 24V output channel 105, a display screen 112, a 48V output channel 106, a 220V output channel 104, a first hanging ear 109, a second hanging ear 130, a front panel 110, a rectifier module 111, a top plate 114, a dynamic ring unit limit bracket 115, a dynamic ring sensor information collection panel 113, a dynamic ring sensor unit 116, a first fan 117, a second fan 119, a communication adapter 118, a first support plate 122, a second support plate 123, a monitoring module 120, a first L guide rail 126, a second L guide rail 127, a rear cover plate 121, an inverter protection board 125, a first inverter module 128, a second inverter module 129, and a third inverter module 131, wherein:

[0069] The bottom plate 101 is provided with heat dissipation holes on both sides and the bottom surface to facilitate the entry of external air into the interior for heat dissipation. The power switch 102 and the terminal block 103 are both installed on the front panel 110. The 12V first output channel 107 and the 12V second output channel 108 are both connected to the output end of the DCUD 12V channel module. The 24V output channel 105 is connected to the output end of the DCUD 24V channel module. The 48V output channel 106 is connected to the DCUD The output end of the 48V channel module is connected, the 220V output channel 104 is connected to the output end of the PDS220V channel module, and the 12V first output channel 107, the 12V second output channel 108, the 24V output channel 105, the 48V output channel 106, the 220V output channel 104, the display screen 112, and the rectifier module 111 are all installed on the front panel 110. The top plate 114 is the upper cover of the entire device, which is used to cover all components inside the device. The dynamic ring unit limit bracket 115 is used to protect the dynamic ring sensor unit 116 and limit its position after installation inside the device. The dynamic ring sensor information acquisition panel 113 is used to access various sensor signals and is installed on the front panel 110 on the inner side of the device. The dynamic ring sensor unit 116 is installed on the first support plate 123 to collect, process and feedback the dynamic ring data information; the first fan 117 and the second fan 119 are installed on the back cover and are located at the bottom layer of the device. When working, they drive the three fans located at the bottom layer of the device. The heat generated by the power supply, the communication adapter 118 is installed on the first support plate 123, which is used to convert RS485-level CAN communication data in various formats, the monitoring module 120 is installed on the support plate for controlling various components inside the device, the first support plate 122 has a first L guide rail 126, which is used to install the limit function when entering each output channel, the second support plate 123 is also installed with a rectifier module 111, which is used to rectify 220V AC power into 48V DC power, and the third support plate 124 is installed with a second L guide rail 127, which is used to install the limit function of each output channel. The first inverter module 128, the first inverter module 128, and the third inverter module 131 are all installed on the bottom layer of the bottom plate 101, and the bottom layer is provided with heat dissipation holes and fans to facilitate the heat discharge of these components. The first hanging ear 109 and the second hanging ear 130 are both installed on the front panel 110, and the hanging ear has a standard cabinet mounting hole, which is suitable for installation on various cabinets.

[0070] After installation, the modular power supply device 10 has two groups of 12V output channels, which are respectively installed on the equipment wiring surface, and can supply power to the 12V power supply equipment inside the cabinet; the modular power supply device 10 has a group of 24V output channels 105, which are installed on the equipment wiring surface, and can supply power to the 24V power supply equipment inside the cabinet; the modular power supply device 10 has a group of 48V output channels 106, which are installed on the equipment wiring surface, and can supply power to the 48V power supply equipment inside the cabinet; the modular power supply device 10 has a group of 220V power supply outputs, and also has a 220V direct power supply output, which is used to power high-power electrical equipment such as broadcasting equipment on highways; the rectifier module 11 1 is used to rectify the 220V input mains into 48V direct current; the main switch can turn the power of the equipment on and off; the display screen 112 can check whether the equipment is faulty, and at the same time display the external information such as the 48V energy storage battery system; the terminal is used to install and connect the mains and 48V backup power; the communication interface is used to connect the superior command center and the communication of the external battery, the communication of the fan cooling system, etc. This equipment provides an integrated installation and layout solution that can solve the power supply of all equipment on the highway; this modular power supply equipment 10 has a reasonable layout of various components, which can provide a good heat dissipation environment for the inside of the equipment. The installation and production method of this modular power supply equipment 10 adopts a vertical 4-layer upper and lower structure to facilitate the assembly work.

[0071] The utility model also provides an electrical system for modular power supply, which includes an interlock switch and a modular power supply device 10 as described above, wherein:

[0072] The interlock switch has a first input end for connecting to the mains input and a second input end for connecting to the oil engine input, and the output end of the interlock switch is connected to the power interface.

[0073] After adopting the above scheme, the input of city power or gasoline engine on the highway can be completed through the interlocking switch, and interlocking control can be realized, that is, the input of the fuel generator is invalid when switching to city power, and the city power is invalid when the fuel generator is input, which can effectively solve the problem of mutual interference between the currents of the two.

[0074] Furthermore, the electrical system further includes an energy storage battery, which is connected to the battery interface, and the output voltage of the energy storage battery is configured to be consistent with the output voltage of the output end of the rectifier module 111 .

[0075] After adopting the above solution, the above energy storage battery is used as a backup source, eliminating the UPS backup method commonly used in the power network, reducing the failure points, and making the system more stable and reliable;

[0076] When the rectifier module 111 charges the energy storage battery, it complies with the following charging strategy:

[0077] Charging: The first stage is constant current charging. When the energy storage battery voltage is less than 54.8V, 5A constant current charging is performed; when the energy storage battery voltage reaches 54.8V, the second stage of floating charging of the energy storage battery is 54.8V-56V, and the floating charging current is less than 3A; when the energy storage battery voltage reaches 56V during floating charging, the charging is terminated. When the city power is cut off, it is continuously switched to the energy storage battery for discharge. The discharge power follows the load power to meet the load application.

[0078] Furthermore, the electrical system also includes an Ethernet switch, an edge computer and a serial port server connected to the communication module, wherein:

[0079] The Ethernet switch, the edge computer and the serial port server are connected in pairs, and the Ethernet switch is also connected to a fiber optic wiring unit.

[0080] After adopting the above solution, the Ethernet switch, serial port server and optical fiber distribution unit can realize the exchange and transmission of information inside the cabinet by the remote control center; the edge computer can calculate and store the information of each electronic device in the cabinet, store it locally, and retrieve the data in the control center when needed, and facilitate the remote control center to understand the status inside the cabinet;

[0081] At the same time, it can be achieved in the remote control room through the optical fiber distribution unit to reach the inside of the cabinet, and the Ethernet switch forwards the control command to control the switch of each inverter module and channel module. The load can be turned off or on according to the actual usage, such as remotely turning on the fog lights or broadcasting. The monitoring module 120, the dynamic ring sensor unit 116 and the sensors it carries can monitor the working environment conditions in the cabinet in real time, such as collecting the temperature and humidity in the cabinet, collecting whether there is water accumulation in the cabinet, detecting whether the cabinet door is open or closed, and detecting whether there is a fire source inside the cabinet to generate smoke.

[0082] At least one embodiment of the present utility model further provides a cabinet, comprising a cabinet body 1, and an electrical system for modular power supply as described above, which is configured in the cabinet body 1, wherein:

[0083] The housing is detachably mounted in the cabinet 1 via a bracket.

[0084] After adopting the above scheme, by installing the above electrical system, the modular power supply equipment 10 can be used to reasonably plan the space in the cabinet, and by controlling the power on and off of loads at different levels, the load operation of the cabinet can be effectively regulated, thereby reducing the subsequent maintenance burden.

[0085] At least one embodiment of the utility model further provides a cabinet, further comprising a cabinet door, a lamp bead and a travel switch. The cabinet door can be opened and closed on the cabinet body 1, the lamp bead is connected to the travel switch, and the travel switch is connected to the power interface and is used to monitor the travel of the cabinet door.

[0086] After adopting the above scheme, the opening of the cabinet door is monitored by the travel switch. The lamp beads can be used to provide light in time when the maintenance personnel open the cabinet, and the lamp beads can be turned off after the cabinet door is opened and closed to save power.

[0087] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A modular power supply circuit, characterized in that: include: A power supply interface, a rectifier module (111), a monitoring module (120), a communication module and at least one inverter module, wherein: The power interface is connected to the input end of the rectifier module (111), and the output end of the rectifier module (111) is connected to the input end of each inverter module; The communication module includes the same number of first communication units as the inverter modules, and an input end of each of the first communication units is connected to an output end of a non-repeated inverter module; The monitoring module (120) is connected between each of the first communication units and the corresponding inverter module to control the conduction between each of the first communication units and the corresponding inverter module.

2. A modular power supply circuit according to claim 1, characterized in that: The communication module further comprises a second communication unit, an input end of the second communication unit being connected to the rectifier module (111), and the monitoring module (120) being connected between the second communication unit and the rectifier module (111) to control conduction between the second communication unit and the rectifier module (111).

3. A modular power supply circuit according to claim 1 or 2, characterized in that: Also includes: A battery interface, the battery interface being connected to an output end of the rectifier module (111).

4. A modular power supply circuit according to claim 3, characterized in that: Also includes: A dynamic ring sensor unit (116), wherein the dynamic ring sensor unit (116) is connected to the monitoring module (120) and each of the inverter modules.

5. A modular power supply device, characterized in that: It comprises a shell, and a modular power supply circuit as claimed in claim 3 or 4 arranged in the shell, wherein the shell is provided with a bracket for detachable installation with a cabinet.

6. An electrical system for modular power supply, characterized in that: comprising an interlock switch, and a modular power supply device as claimed in claim 5, wherein: The interlock switch has a first input end for connecting to a mains power input, and a second input end for connecting to an oil engine input, and an output end of the interlock switch is connected to the power interface.

7. An electrical system for modular power supply according to claim 6, characterized in that: It also includes an energy storage battery, which is connected to the battery interface, and the output voltage of the energy storage battery is configured to be consistent with the output voltage of the output end of the rectifier module (111).

8. An electrical system for modular power supply according to claim 6, characterized in that: It also includes an Ethernet switch, an edge computer and a serial port server connected to the communication module, wherein: The Ethernet switch, edge computer and serial port server are connected in pairs, and the Ethernet switch is also connected to a fiber optic wiring unit.

9. A cabinet, characterized in that: The invention comprises a cabinet (1), and an electrical system for modular power supply as claimed in any one of claims 6 to 8 arranged in the cabinet (1), wherein: The outer shell is detachably mounted in the cabinet (1) via a bracket.

10. The cabinet according to claim 9, characterized in that: It also comprises a cabinet door, a lamp bead and a travel switch, wherein the cabinet door is configured to be openable and closable on the cabinet body (1), the lamp bead is connected to the travel switch, and the travel switch is connected to the power interface and is used to monitor the travel of the cabinet door.

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