Power distribution circuit, power distribution cabinet, power distribution system

Abstract

This application provides a power distribution circuit, a power distribution cabinet, and a power distribution system, relating to the field of power electronics technology. The power distribution circuit includes: at least one power input terminal, a maintenance switch, a first switch, a second switch, at least one maintenance power port, at least one first power port, and at least one second power port. A first end of the maintenance switch is connected to the power input terminal, and a second end of the maintenance switch is connected to the maintenance power port. A first end of the first switch is connected to the power input terminal, and a second end of the first switch is connected to at least one first power port. The first power port is used to connect equipment for which power interruption is not permitted during maintenance. A first end of the second switch is connected to the power input terminal, and a second end of the second switch is connected to at least one second power port. The second power port is used to connect equipment for which power interruption is permitted during maintenance. Embodiments of this application can improve the reliability and versatility of the power distribution circuit.

Description

Technical Field

[0001] This application relates to the field of power electronics technology, and in particular to a power distribution circuit, a power distribution cabinet, and a power distribution system. Background Technology

[0002] A power distribution cabinet is a device that supplies power to electrical equipment. In order to adapt to different electrical equipment needs, the power distribution lines inside the power distribution cabinet need to be customized, resulting in lower reliability and versatility.

[0003] It should be noted that the above statements are only used to provide background information related to this application and do not necessarily constitute prior art. Utility Model Content

[0004] In view of this, the purpose of this application is to provide a power distribution circuit, power distribution cabinet, and power distribution system, which can specifically solve the problems of low reliability and versatility of existing power distribution cabinets.

[0005] Based on the above objectives, in a first aspect, this application proposes a power distribution circuit, the power distribution circuit including at least one power input terminal, a maintenance switch, a first switch, a second switch, at least one maintenance power port, at least one first power port, and at least one second power port; the first terminal of the maintenance switch is connected to the power input terminal, and the second terminal of the maintenance switch is connected to the maintenance power port; the first terminal of the first switch is connected to the power input terminal, and the second terminal of the first switch is connected to at least one first power port; wherein the first power port is used to connect equipment that is not allowed to be powered off during maintenance; the first terminal of the second switch is connected to the power input terminal, and the second terminal of the second switch is connected to at least one second power port; the second power port is used to connect equipment that is allowed to be powered off during maintenance.

[0006] In some embodiments, the first power port includes at least one first AC power port and at least one first DC power port; the power distribution circuit further includes a first voltage converter; the first AC power port is used to connect AC equipment that cannot be powered off during maintenance; the first DC power port is used to connect DC equipment that cannot be powered off during maintenance; the second end of the first switch is connected to the first AC power port; the second end of the first switch is also connected to the first end of the first voltage converter, and the second end of the first voltage converter is connected to at least one of the first DC power ports.

[0007] In some embodiments, the second power port includes at least one second AC power port and at least one second DC power port; the power distribution circuit further includes a second voltage converter; the second AC power port is used to connect AC equipment that is allowed to be powered off during maintenance; the second DC power port is used to connect DC equipment that is allowed to be powered off during maintenance; the second terminal of the second switch is connected to the second AC power port; the second terminal of the second switch is also connected to the first terminal of the second voltage converter, and the second terminal of the second voltage converter is connected to at least one second DC power port.

[0008] In some embodiments, the power distribution circuit further includes a third switch and a third power port;

[0009] The first end of the third switch is connected to the power input terminal, and the second end of the third switch is connected to the third power port; the third power port is used to output a first AC voltage, which is greater than the output voltage of the first AC power port and the second AC power port.

[0010] In some embodiments, the power distribution circuit further includes a fourth switch; the power input terminal is connected to the first terminal of the fourth switch, and the second terminal of the fourth switch is connected to the first terminal of the third switch, the first terminal of the first switch, and the first terminal of the second switch.

[0011] In some embodiments, the first AC voltage is 380V, and the output voltage of the first AC power port and the second AC power port is 220V.

[0012] Secondly, a power distribution cabinet is also provided, the power distribution cabinet including a cabinet body and a power distribution circuit as described in any one of the first aspects; the outer wall of the cabinet body is provided with a power interface and an external interface module, the power input terminal of the power distribution circuit is connected to the power interface; at least one maintenance power port, at least one first power port, and at least one second power port of the power distribution circuit are all connected to the external interface module.

[0013] In some embodiments, the external interface module includes multiple centralized terminal areas, and the maintenance power port, the first power port, and the second power port are respectively located in different centralized terminal areas, with a preset distance between the different centralized terminal areas.

[0014] Thirdly, a power distribution system is also provided, the power distribution system comprising: a power supply, a power distribution circuit as described in any one of the first aspects, and electrical equipment; the power input terminal of the power distribution circuit is connected to the power supply, and the maintenance power port, the first power port, and the second power port of the power distribution circuit are respectively connected to maintenance equipment, equipment that is not allowed to be powered off during maintenance, and equipment that is allowed to be powered off during maintenance.

[0015] Fourthly, a power distribution system is also provided, the power distribution system comprising: a power supply, the power distribution cabinet described in the second aspect, and electrical equipment; the power distribution cabinet is connected to the power supply through a power interface, and the power distribution cabinet is connected to the electrical equipment through an external interface module; the electrical equipment includes maintenance equipment, equipment that is not allowed to be powered off during maintenance, and equipment that is allowed to be powered off during maintenance.

[0016] In summary, this application has at least the following beneficial effects:

[0017] A power distribution circuit is provided that controls the power supply to a maintenance power port, at least one first power port, and at least one second power port via a maintenance switch, a first switch, and a second switch, respectively. The maintenance power port is used to connect to maintenance equipment, the first power port is used to connect to equipment for which power interruption is not permitted during maintenance, and the second power port is used to connect to equipment for which power interruption is permitted during maintenance. In this way, the power ports are divided into three categories, and a single switch can achieve unified control of equipment connected to the same type of power port, greatly improving the reliability and versatility of the power distribution circuit.

[0018] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0019] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the various drawings denote the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings depict only some embodiments disclosed in this application and should not be construed as limiting the scope of this application. Furthermore, the same reference numerals denote the same parts throughout all the drawings.

[0020] Figure 1 A schematic diagram of the power distribution circuit of this application is shown;

[0021] Figure 2 A schematic diagram of another architecture of the power distribution circuit of this application is shown;

[0022] Figure 3 This diagram illustrates yet another architecture of the power distribution circuit of this application;

[0023] Figure 4 A schematic diagram of another architecture of the power distribution circuit of this application is shown;

[0024] Figure 5 A schematic diagram of the power distribution cabinet of this application is shown. Detailed Implementation

[0025] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0027] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0028] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0029] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0030] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0031] In related technologies, in order to adapt to the different needs of electrical equipment, the power distribution lines in the distribution cabinet need to be customized. For example, when the electrical equipment in a system is a new device, the circuit breakers, cable trays and terminal blocks in the distribution cabinet need to be rearranged, resulting in "one cabinet for one project", that is, the existing distribution cabinet has low versatility.

[0032] To address the aforementioned problems, this embodiment provides a power distribution circuit, a power distribution cabinet, and a power distribution system. The power distribution circuit in this embodiment controls the power supply to a maintenance power port, at least one first power port, and at least one second power port via a maintenance switch, a first switch, and a second switch, respectively. The maintenance power port is used to connect to maintenance equipment, the first power port is used to connect to equipment for which power interruption is not permitted during maintenance, and the second power port is used to connect to equipment for which power interruption is permitted during maintenance. In this way, the power ports are divided into three categories, and a single switch can achieve unified control of devices connected to the same type of power port. By configuring the power ports according to whether power interruption is permitted during maintenance, there is no need to consider the model of the equipment connected to the power port. During use, the equipment is connected to the corresponding power port according to whether power interruption is permitted during maintenance, without changing the power distribution circuit itself, greatly improving the reliability and versatility of the power distribution circuit.

[0033] For ease of explanation, the following embodiments use the application of a power distribution circuit and power distribution cabinet in an energy storage system as an example.

[0034] Figure 1 A schematic diagram of the power distribution circuit architecture of this application is shown. (Reference) Figure 1 In the embodiments of this application, the power distribution circuit includes at least one power input terminal, a maintenance switch Q1, a first switch Q2, a second switch Q3, at least one maintenance power port, at least one first power port, and at least one second power port; the first end of the maintenance switch Q1 is connected to the power input terminal, and the second end of the maintenance switch Q1 is connected to the maintenance power port; the first end of the first switch Q2 is connected to the power input terminal, and the second end of the first switch Q2 is connected to at least one first power port; wherein the first power port is used to connect equipment that is not allowed to be powered off during maintenance; the first end of the second switch Q3 is connected to the power input terminal, and the second end of the second switch Q3 is connected to at least one second power port; the second power port is used to connect equipment that is allowed to be powered off during maintenance.

[0035] In this embodiment, the power input terminal is used to connect to the power supply so that the power supply can be distributed to the electrical equipment through the power distribution circuit of this embodiment.

[0036] In one example, the first terminal of the maintenance switch Q1 is connected to the power input terminal, and the second terminal of the maintenance switch Q1 is connected to the maintenance power port. The maintenance power port is used to connect the maintenance equipment. In this way, the power supply to the maintenance equipment can be controlled by controlling the closing or opening of the maintenance switch Q1, so as to provide power to the maintenance equipment during maintenance and stop the power supply to the maintenance equipment when not in maintenance.

[0037] In one example, the first terminal of the first switch Q2 is connected to the power input terminal, and the second terminal of the first switch Q2 is connected to at least one first power port, which may include, for example, a first power port. Figure 1 The system has multiple first power ports connected in parallel. One end of each first power port is connected to a first switch Q2, and the other end is connected to multiple devices that cannot be powered off during maintenance. Thus, during maintenance, the devices connected to the first power ports can be kept energized by controlling the first switch Q2 to remain closed.

[0038] In one example, the first terminal of the second switch Q3 is connected to the power input terminal, and the second terminal of the second switch Q3 is connected to at least one second power port, which may include, for example, a second power port. Figure 1 The system has multiple second power ports connected in parallel. These second power ports are used to connect equipment that can be powered off during maintenance; one end of the second power port is connected to the second terminal of the second switch Q3, and the other end is connected to the equipment that can be powered off during maintenance. Thus, during maintenance, the equipment connected to the first power port can be kept energized by keeping the second switch Q3 closed, or conversely, the equipment can be kept de-energized by keeping the second switch Q3 open.

[0039] In one example, equipment that cannot be powered off during maintenance includes emergency stop devices, fire-fighting equipment, and other equipment highly relevant to production safety, in order to improve the safety and reliability of the system during maintenance. Equipment that cannot be powered off during maintenance includes liquid-cooled unit controllers, indicator lights, CMUs, switches, and fire exhaust fans. Equipment that can be powered off during maintenance includes auxiliary equipment such as access control lighting and fans.

[0040] The embodiments of this application control the power supply to the maintenance power port, at least one first power port, and at least one second power port via a maintenance switch, a first switch, and a second switch, respectively. The maintenance power port is used to connect to maintenance equipment, the first power port is used to connect to equipment for which power interruption is not permitted during maintenance, and the second power port is used to connect to equipment for which power interruption is permitted during maintenance. In this way, the power ports are divided into three categories, and a single switch can achieve unified control of devices connected to the same type of power port, greatly improving the reliability and versatility of the power distribution circuit.

[0041] Furthermore, by configuring the power ports in a grouping manner based on whether power interruption is allowed during maintenance or not, there is no need to consider the model of the equipment connected to the power port. When using the equipment, simply connect the equipment to the corresponding power port according to whether power interruption is allowed during maintenance, without having to change the power distribution circuit itself.

[0042] Figure 2 The diagram shows another architecture of the power distribution circuit of this application, as follows: Figure 2As shown in the embodiment of this application, the first power port includes at least one first AC power port and at least one first DC power port, and the power distribution circuit further includes a first voltage converter; the first AC power port is used to connect AC equipment that cannot be powered off during maintenance; the first DC power port is used to connect DC equipment that cannot be powered off during maintenance; the second end of the first switch is connected to the first AC power port; the second end of the first switch is also connected to the first end of the first voltage converter, and the second end of the first voltage converter is connected to at least one first DC power port.

[0043] like Figure 2 As shown, the first AC power port is used to output AC voltage, such as AC220V. One end of the first AC power port is directly connected to the second end of the first switch Q2. The other end of the first AC power port is used to connect AC equipment that cannot be powered off during maintenance, thus enabling the power distribution circuit of this embodiment to meet the requirements of AC equipment that cannot be powered off.

[0044] The first DC power port is used to output DC voltage, such as DC 24V. One end of the first DC power port is connected to the second end of the first switch Q2 through a first voltage converter. The other end of the first DC power port is used to connect to DC equipment that cannot be powered off during maintenance, thereby enabling the power distribution circuit of this embodiment to meet the requirements of DC equipment that cannot be powered off.

[0045] The first voltage converter is, for example, a 24V DC switching power supply, which converts the input voltage at the power input terminal into a DC 24V voltage.

[0046] The above embodiments enable the power distribution circuit to be adapted to AC and DC equipment that cannot be powered off during maintenance, and can simultaneously control equipment with different operating voltages that cannot be powered off during maintenance, further improving the versatility and control efficiency of the power distribution circuit.

[0047] Figure 3 This illustrates yet another schematic diagram of the power distribution circuit of this application, such as... Figure 3 As shown in the embodiment of this application, the second power port includes at least one second AC power port and at least one second DC power port, and the power distribution circuit also includes a second voltage converter; the second AC power port is used to connect AC equipment that is allowed to be powered off during maintenance; the second DC power port is used to connect DC equipment that is allowed to be powered off during maintenance; the second end of the second switch is connected to the second AC power port; the second end of the second switch is also connected to the first end of the second voltage converter, and the second end of the second voltage converter is connected to at least one second DC power port.

[0048] like Figure 3As shown, the second AC power port is used to output AC voltage, such as AC220V. One end of the second AC power port is directly connected to the second terminal of the second switch Q3. The other end of the second AC power port is used to connect to AC equipment that can be powered off during maintenance, thereby enabling the power distribution circuit of this embodiment to meet the requirements of AC equipment that can be powered off.

[0049] The second DC power port is used to output DC voltage, such as DC 24V. One end of the second DC power port is connected to the second terminal of the second switch Q3 via a second voltage converter. The other end of the second DC power port is used to connect to DC equipment that can be powered off during maintenance, thereby enabling the power distribution circuit of this embodiment to meet the requirements of DC equipment that can be powered off.

[0050] The second voltage converter is, for example, a 24V DC switching power supply, which converts the input voltage at the power input terminal to DC24V.

[0051] The above embodiments enable the power distribution circuit to be adapted to AC and DC equipment that are allowed to be powered off during maintenance, and can simultaneously control equipment with different operating voltages that are allowed to be powered off during maintenance, further improving the versatility and control efficiency of the power distribution circuit.

[0052] In one example, at least one first power port and at least one second power port both include a first type of power port and a second type of power port, wherein the first type of power port is used to connect general-purpose electrical equipment; and the second type of power port is used to connect functionally extended electrical equipment.

[0053] In this embodiment, general-purpose electrical equipment refers to electrical equipment included in different electrical systems, such as controllers, switches, and fire-fighting equipment. Functionally expandable electrical equipment refers to electrical equipment set up by each electrical system according to its own needs. For example, one electrical system may include monitoring equipment but no infrared equipment; another electrical system may include infrared equipment to monitor a wetland.

[0054] When a certain power system does not require the connection of a second type of power port, the second type of power port can be left unused as an optional port. When there are electrical devices in each power system that correspond to the second type of power port, the corresponding electrical devices are connected to the second type of power port.

[0055] In one example, one of the first power ports can be used as a second-type power port, and the rest as first-type power ports. Alternatively, multiple of the first power ports can be used as second-type power ports, and the rest as first-type power ports. Whether the specific power ports are connected to general-purpose electrical equipment or functionally expanded electrical equipment can be configured according to requirements, and will not be elaborated here.

[0056] The above embodiments divide both the first power port and the second power port into standard / optional ports, which improves the expandability of the power distribution circuit. When adapting to different power systems, the first type of power port can be used to connect to general-purpose electrical equipment in the power system; the second type of power port can be used to connect to functionally extended electrical equipment in the power system without changing the power distribution circuit structure.

[0057] Figure 4 The diagram shows another possible architecture of the power distribution circuit of this application, as follows: Figure 4 As shown in the embodiment of this application, the power distribution circuit further includes a third switch QF2 and a third power port. The first end of the third switch QF2 is connected to the power input terminal, and the second end of the third switch is connected to the third power port. The third power port is used to output a first AC voltage, which is greater than the output voltage of the first AC power port and the second AC power port.

[0058] In this embodiment, the third power port is used to output a first AC voltage, which is greater than the output voltage of the first AC power port and the second AC power port. This allows it to be adapted to devices with a working voltage of the first AC voltage, so that the power distribution circuit of this embodiment can meet the needs of electrical devices with different voltage requirements.

[0059] In one example, the first AC voltage is, for instance, AC380V, meaning the third power port is used to output AC380V to provide 380V AC power to the electrical equipment. For example, the third power port is connected to devices that require AC380V to operate, such as dehumidifiers or water-cooling equipment.

[0060] Based on the different voltages of the connected devices and whether power outage is permitted during maintenance, the above embodiments divide the power ports into a first power port, a second power port, a maintenance port, and a third power port. This enables individual control of each type of electrical equipment and reduces the probability of accidentally shutting down important equipment (equipment that is not allowed to be powered off during maintenance) during maintenance.

[0061] In this embodiment, the power distribution circuit also includes a fourth switch QF1; the power input terminal is connected to the first terminal of the fourth switch QF1, and the second terminal of the fourth switch is connected to the first terminal of the third switch QF1, the first terminal of the first switch Q2, and the first terminal of the second switch Q3.

[0062] In this embodiment, one end of the fourth switch QF1 is connected to the power input terminal, and the other end is connected to the third switch QF1, the first switch Q2, and the second switch Q3 respectively. When the power distribution circuit is working normally, it can provide power to each power port in the power distribution circuit, and when the power distribution circuit is shut down or malfunctions, it can quickly shut down the power distribution circuit and cut off the power supply to each power port.

[0063] In one example, when the power input is connected to the power supply bus, QF1 is configured as a bus control switch to control the overall conduction or cutoff of the power distribution circuit.

[0064] In one example, a fuse FU can also be installed between the second terminal of the fourth switch and the first terminal of the first switch Q2 and the first terminal of the second switch Q3 to improve the safety of the power distribution circuit.

[0065] In this embodiment, the first AC voltage is 380V, and the output voltage of the first AC power port and the second AC power port is 220V.

[0066] Figure 5 A schematic diagram of the power distribution cabinet of this application is shown. (Reference) Figure 5 This embodiment provides a power distribution cabinet, which includes a cabinet body 201 and a power distribution circuit provided in any of the above embodiments. Figure 5 (Not shown in the image), the outer wall of the cabinet 201 is provided with a power interface 203 and an external interface module 202, and the power input terminal of the power distribution circuit is connected to the power interface 203; at least one maintenance power port, at least one first power port, and at least one second power port of the power distribution circuit are all connected to the external interface module 202.

[0067] In this embodiment, the power input terminal of the power distribution circuit is connected to the power interface 203 of the power distribution cabinet, which can introduce a voltage source to the power distribution circuit without disassembling the cabinet. The maintenance power port, the first power port, and the second power port of the power distribution circuit are all connected to an external interface module, concentrating the originally scattered power output ports in the same area. This allows for immediate plugging and unplugging when connecting the power distribution cabinet to the power system, greatly improving the convenience of connection. Furthermore, since the maintenance power port, the first power port, and the second power port can output different voltages and are compatible with different electrical equipment, there is no need to modify the circuit inside the power distribution cabinet.

[0068] The power interface 203 and the external interface module 202 can be located on the same side of the cabinet 201 for easy wiring operations.

[0069] In this embodiment of the application, the external interface module 202 includes multiple centralized terminal areas, with the maintenance power port, the first power port, and the second power port respectively located in different centralized terminal areas, and the different centralized terminal areas are spaced apart by a preset distance.

[0070] In the above embodiment, the maintenance power port, the first power port, and the second power port are respectively located in different centralized terminal areas, with a preset distance between the different centralized terminal areas. This can achieve physical isolation of different types of power ports, reduce the probability of incorrect connection, and the partitioning according to the power port type can also enable staff to quickly identify the terminal type and improve wiring efficiency.

[0071] The power distribution cabinet in this embodiment can be directly plugged into and connected to electrical equipment via power ports located on the external interface module. When a new electrical device is added to a power system, it can be connected to either the first or second power port, depending on whether the new device can be powered off during maintenance. No modifications to the internal circuitry of the power distribution cabinet are required, demonstrating strong versatility. For electrical equipment with different configuration options, assembly and connection can be achieved through the second type of power port, reducing production assembly time and labor costs, and minimizing quality issues caused by incorrect wiring.

[0072] This application provides a power distribution system, which includes: a power supply, the aforementioned power distribution circuit, and electrical equipment; the power input terminal of the power distribution circuit is connected to the power supply, and the maintenance power port, the first power port, and the second power port of the power distribution circuit are respectively connected to maintenance equipment, equipment that is not allowed to be powered off during maintenance, and equipment that is allowed to be powered off during maintenance.

[0073] The power distribution circuit in this embodiment divides the power ports into three categories. The maintenance power port, the first power port, and the second power port are respectively connected to the maintenance equipment, the equipment that cannot be powered off during maintenance, and the equipment that can be powered off during maintenance. In this way, unified control of the equipment connected to the same type of power port can be achieved through a single switch, which greatly improves the reliability and versatility of the power distribution system.

[0074] This application provides a power distribution system, which includes: a power supply, a distribution cabinet, and electrical equipment; the distribution cabinet is connected to the power supply through a power interface, and the distribution cabinet is connected to the electrical equipment through an external interface module; the electrical equipment includes maintenance equipment, equipment that is not allowed to be powered off during maintenance, and equipment that is allowed to be powered off during maintenance.

[0075] In one example, the aforementioned power distribution system is, for instance, the power distribution system within an energy storage system, and the power supply is, for instance, an energy storage battery cell. The aforementioned power distribution system is used to provide power to the auxiliary equipment of the energy storage system.

[0076] In one example, equipment under maintenance might include debugging devices, hydraulic tools, etc. Equipment that cannot be powered off during maintenance includes liquid chiller controllers, indicator lights, CMUs, switches, fire exhaust fans, etc. Equipment that can be powered off during maintenance includes water immersion controllers, access control lights, fans, lighting fixtures, monitoring equipment, etc.

[0077] Compared to related technologies that require customized distribution cabinets for different electrical devices, the power distribution system in this embodiment does not require modification of the internal circuitry of the distribution cabinet, thus exhibiting strong versatility. Electrical devices with different configuration options can be directly assembled and connected, reducing production assembly time and labor costs, and minimizing quality issues caused by incorrect wiring.

[0078] The description of the various embodiments above tends to emphasize the differences between the various embodiments. The similarities or similarities between them can be referred to, and for the sake of brevity, they will not be repeated here.

[0079] It should be noted that:

[0080] In the foregoing text, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0081] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0082] The embodiments of this application have been described above with reference to the accompanying drawings. These are merely specific implementations of this application, but this application is not limited to the specific implementations described above. The specific implementations described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A power distribution circuit, characterized in that, The power distribution circuit includes: at least one power input terminal, a maintenance switch, a first switch, a second switch, at least one maintenance power port, at least one first power port, and at least one second power port; The first end of the maintenance switch is connected to the power input terminal, and the second end of the maintenance switch is connected to the maintenance power port. The first end of the first switch is connected to the power input terminal, and the second end of the first switch is connected to at least one of the first power ports; wherein the first power port is used to connect equipment that cannot be powered off during maintenance. The first end of the second switch is connected to the power input terminal, and the second end of the second switch is connected to at least one of the second power ports; the second power ports are used to connect to equipment that is allowed to be powered off during maintenance.

2. The power distribution circuit according to claim 1, characterized in that, The first power port includes at least one first AC power port and at least one first DC power port; the power distribution circuit also includes a first voltage converter; the first AC power port is used to connect AC equipment that cannot be powered off during maintenance; the first DC power port is used to connect DC equipment that cannot be powered off during maintenance. The second end of the first switch is connected to the first AC power port; The second end of the first switch is also connected to the first end of the first voltage converter, and the second end of the first voltage converter is connected to at least one of the first DC power supply ports.

3. The power distribution circuit according to claim 2, characterized in that, The second power port includes at least one second AC power port and at least one second DC power port, and the power distribution circuit further includes a second voltage converter; the second AC power port is used to connect AC equipment that is allowed to be powered off during maintenance; the second DC power port is used to connect DC equipment that is allowed to be powered off during maintenance. The second terminal of the second switch is connected to the second AC power port; The second terminal of the second switch is also connected to the first terminal of the second voltage converter, and the second terminal of the second voltage converter is connected to at least one of the second DC power supply ports.

4. The power distribution circuit according to claim 3, characterized in that, The power distribution circuit also includes a third switch and a third power port; The first end of the third switch is connected to the power input terminal, and the second end of the third switch is connected to the third power port; the third power port is used to output a first AC voltage, which is greater than the output voltage of the first AC power port and the second AC power port.

5. The power distribution circuit according to claim 4, characterized in that, The power distribution circuit also includes a fourth switch; The power input terminal is connected to the first terminal of the fourth switch, and the second terminal of the fourth switch is connected to the first terminal of the third switch, the first terminal of the first switch, and the first terminal of the second switch.

6. The power distribution circuit according to claim 4, characterized in that, The first AC voltage is 380V, and the output voltage of the first AC power port and the second AC power port is 220V.

7. A power distribution cabinet, characterized in that, The power distribution cabinet includes a cabinet body and a power distribution circuit as described in any one of claims 1-6; The outer wall of the cabinet is provided with a power interface and an external interface module. The power input terminal of the power distribution circuit is connected to the power interface. At least one maintenance power port, at least one first power port, and at least one second power port of the power distribution circuit are all connected to the external interface module.

8. The power distribution cabinet according to claim 7, characterized in that, The external interface module includes multiple centralized terminal areas. The maintenance power port, the first power port, and the second power port are respectively located in different centralized terminal areas, and the different centralized terminal areas are spaced apart by a preset distance.

9. A power distribution system, characterized in that, The power distribution system includes: a power supply, a power distribution circuit according to any one of claims 1-6, and electrical equipment; The power input terminal of the power distribution circuit is connected to the power supply. The maintenance power port, the first power port, and the second power port of the power distribution circuit are respectively connected to the maintenance equipment, the equipment that is not allowed to be powered off during maintenance, and the equipment that is allowed to be powered off during maintenance.

10. A power distribution system, characterized in that, The power distribution system includes: a power supply, a power distribution cabinet as described in claim 7 or 8, and electrical equipment; The power distribution cabinet is connected to the power supply through a power interface, and the power distribution cabinet is connected to the electrical equipment through an external interface module; The electrical equipment includes maintenance equipment, equipment that is not allowed to be powered off during maintenance, and equipment that is allowed to be powered off during maintenance.

Images