Direct-current and alternating-current integrated distribution box
By designing a modular distribution box that integrates AC and DC power supply, the problem of low space utilization and safety of traditional distribution cabinets in pole-mounted scenarios with monitoring functions is solved, achieving efficient power supply and convenient maintenance.
Patent Information
- Application Number
- CN202520114350.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-01-17
AI Technical Summary
In existing technologies, traditional power distribution cabinets in pole-mounted scenarios with monitoring functions supply AC and DC power separately, resulting in low space utilization, high maintenance costs, and an inability to effectively solve specific problems.
A DC-AC integrated power distribution box was designed, which integrates AC and DC power supply functions into one box. It adopts a modular design and includes components such as a voltage regulator, air switch, AC switching power supply, industrial switch and surge arrester. It realizes overload, short circuit and leakage protection and supports fiber optic communication.
It improves space utilization, reduces maintenance costs, enhances flexibility and convenience of use, and ensures the safety and reliability of the equipment.
Smart Images

Figure CN223771573U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of communication power distribution technology, and in particular relates to a DC-AC integrated power distribution box. Background Technology
[0002] Distribution boxes are electrical equipment characterized by their small size, easy installation, special technical performance, fixed location, unique configuration functions, no site restrictions, wide application, stable and reliable operation, high space utilization, small footprint, and environmental benefits.
[0003] Currently, for pole-mounted applications with monitoring functions, cameras and AP devices need to be installed. With the rapid development of power systems and communication fields, traditional distribution cabinets are insufficient in terms of distributed energy carrying capacity, and face many challenges in terms of unbalanced power supply capacity and improved power supply reliability and quality requirements. In order to provide power to cameras and AP devices, it is necessary to convert AC power into stable DC power while providing normal AC power supply. However, the existing technology has the following problems: (1) AC and DC power are supplied by separate distribution boxes, resulting in low space utilization, high maintenance costs, and poor flexibility and convenience of use; (2) No safety measures such as overload protection, short circuit protection, and leakage protection are set, or corresponding protection measures need to be set separately for the two distribution boxes, resulting in low safety or structural redundancy; (3) Modular design is not adopted, resulting in poor convenience of installation, disassembly, and maintenance. Therefore, in view of the above problems, this solution proposes a DC-AC integrated distribution box. Utility Model Content
[0004] This utility model provides a DC / AC integrated power distribution box. The box contains a regulated power supply providing stable AC voltage, an air switch with a socket to prevent short circuits, and an AC switching power supply that converts AC to 24V DC. An industrial switch and an optical cable terminal box are installed inside the box, with a surge arrester installed on the industrial switch. The AC24V switching power supply and the industrial switch are connected to terminals, which also have output power lines and grounding wires. This power distribution box integrates AC and DC power supply into one unit, achieving dual AC and DC power supply functions. It has high space utilization and uses an interlocking mechanism. The front-opening door design facilitates easy opening and closing, offering flexibility and convenience. The internal regulated power supply provides stable power, while the air switch offers overload and short-circuit protection, automatically disconnecting the circuit when the current exceeds the rated value. An AC switching power supply powers DC equipment, and the industrial switch and optical terminal box facilitate network data exchange and transmission, enabling fiber optic communication. The industrial switch is equipped with a surge arrester to prevent damage from lightning overvoltage, and a grounding wire is connected to the terminals to prevent leakage. The modular configuration of components within the distribution box facilitates installation, disassembly, and maintenance. In summary, this design addresses the problems described in the background technology.
[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:
[0006] This utility model discloses a DC / AC integrated power distribution box, comprising a box body with a front door, wherein a voltage regulator, an air switch with a socket, an AC24 switching power supply, an industrial switch, an optical cable terminal box, a surge arrester, and terminal blocks are installed inside the box body.
[0007] The regulated power supply is connected to the 220V input line and to the air switch. The AC24 switching power supply is also connected to the air switch. The industrial switch and the optical cable terminal box are connected via optical fiber. The AC24 switching power supply and the industrial switch are connected to the terminal blocks respectively. The industrial switch is connected to the surge arrester via a network cable and then the network cable is output. The optical cable terminal box outputs an optical fiber line. The terminal blocks also have output power lines and grounding lines.
[0008] Furthermore, the enclosure is provided with a first partition and a second partition. The space formed by the first partition and the inner wall of the upper space of the enclosure is used to install a voltage regulator, an air switch, and an AC24 switching power supply. The space formed by the second partition and the inner wall of the upper space of the enclosure is used to install an industrial switch, an optical cable terminal box, a surge arrester, and a terminal block.
[0009] Furthermore, the surface of the first partition plate is provided with holes for threading wires.
[0010] Furthermore, the surface of the second partition plate is uniformly provided with waist-shaped holes for fixing and threading.
[0011] Furthermore, a wire-passing hole for threading wires is provided at the bottom of the box.
[0012] Furthermore, the terminal block is installed on the inner side wall of the enclosure.
[0013] Furthermore, an opening and closing lock is installed on the front door, and a safety line connects the front door to the housing.
[0014] Furthermore, the rear side of the housing is provided with a mounting groove for fixed installation, and the sides of the housing are provided with downward-facing heat dissipation slots.
[0015] The present invention has the following advantages over the prior art:
[0016] (1) The distribution box integrates AC and DC power supply into one box, which can realize the dual functions of AC power supply and DC power supply. It has high space utilization and adopts a front door structure with opening and closing lock, which is convenient to open and close. It is flexible and convenient to use.
[0017] (2) The regulated power supply inside the box provides stable power supply, the air switch can provide overload and short circuit protection, and can automatically disconnect the circuit when the current exceeds the rated value; the AC switching power supply can power DC equipment, the industrial switch and optical terminal box are used for network data exchange and transmission to realize optical fiber communication, and the industrial switch is equipped with a surge arrester to prevent lightning overvoltage from damaging the equipment, and the terminal block is connected to a grounding wire to prevent leakage.
[0018] (3) The components inside the distribution box are modularly configured. The box has a first partition and a second partition. The first partition is used to install the regulated power supply, AC switching power supply and air switch on the upper part of the distribution box for easy centralized operation and maintenance. The second partition is used to install the industrial switch and optical terminal box in the lower middle part of the distribution box. The first partition, the second partition and the bottom of the distribution box are provided with holes for wires to pass through, which facilitates the entry and exit of cables and connection and operation, and is easy to install, disassemble and maintain.
[0019] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description
[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0021] Figure 1This is a schematic diagram of the structure of a DC / AC integrated distribution box according to the present invention;
[0022] Figure 2 for Figure 1 A schematic diagram of the structure of the DC-AC integrated distribution box after it has been opened;
[0023] Figure 3 for Figure 1 Rear structure diagram of the integrated DC / AC distribution box;
[0024] Figure 4 for Figure 1 A schematic diagram of the side structure of a medium-voltage DC-AC integrated distribution box;
[0025] Figure 5 This diagram shows the connection relationships between the various modules inside the DC / AC integrated distribution box.
[0026] The attached diagram lists the components represented by each number as follows:
[0027] 1-Box body, 11-Front door, 12-Lock, 13-First partition, 14-Second partition, 15-Terminal, 16-Wire hole, 17-Safety wire, 18-Mounting slot, 2-Air switch, 21-Socket, 22-Power supply. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0029] In the description of this utility model, it should be understood that the terms "inner", "inner sidewall", "both sides", "downward", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0030] Please see Figure 1-5As shown, this utility model discloses a DC / AC integrated power distribution box, including a box 1 with a front door 11. Inside the box 1 are installed a voltage regulator, an air switch 2 with a socket 21, an AC24 switching power supply 22, an industrial switch, an optical cable terminal box, a surge arrester, and terminal blocks 15. In this specific embodiment, the box 1 is made of stainless steel and has an overall rectangular shape. The voltage regulator, air switch 2, and AC24 switching power supply 22 are all fixedly installed inside the box 1 using fasteners or screws. The industrial switch, optical cable terminal box, and surge arrester can be fixed using clips, screws, or restraint strips.
[0031] The voltage regulator is connected to the 220V input line and to the air switch 2. The AC24 switching power supply 22 is connected to the air switch 2. The industrial switch and the optical cable terminal box are connected by optical fiber. The AC24 switching power supply 22 and the industrial switch are respectively connected to terminal 15. The industrial switch is connected to the surge arrester via a network cable and then the network cable is connected out. The optical cable terminal box is connected to the optical fiber line. The terminal also has an output power line and a grounding line.
[0032] The system includes a regulated power supply providing a stable 220V AC power source to power the internal electronic equipment; an air switch 2 for overload and short-circuit protection, automatically disconnecting the circuit when the current exceeds the rated value; an AC switching power supply 22 converting AC power to 24V DC power to power DC devices; an industrial switch for network data exchange and transmission; an optical terminal box for fiber optic communication, connecting fiber optic lines; a surge arrester to prevent damage to the equipment from lightning overvoltage; terminal blocks for grounding the equipment and preventing leakage; a 220V input line for connecting to a 220V AC power source; and an output power line to provide power to the equipment, specifically for powering cameras in a pole-mounted scenario with monitoring functions in this embodiment.
[0033] In this solution, a 220V AC regulated power supply is used for the voltage regulator. The air switch, AC24 switching power supply, industrial switch, optical cable terminal box, surge arrester, and terminal block are all conventional models used in power scenarios. Meeting the corresponding specific requirements is within the protection scope of this technical solution. The connections between the various electrical appliances are well known to those skilled in the art based on the connection relationships. The specific connection ports and interfaces are selected based on the corresponding models. Those skilled in the art can directly connect them without expending intellectual creative effort. Therefore, the specific interface connections between the various electrical appliances and the selection of specific models of the electrical appliances are not described in this embodiment.
[0034] The enclosure 1 is equipped with a first partition 13 and a second partition 14. The space formed by the first partition 13 and the inner wall of the upper space of the enclosure 1 is used to install a voltage regulator, an air switch 2 and an AC24 switching power supply 22. The space formed by the second partition 14 and the inner wall of the upper space of the enclosure 1 is used to install an industrial switch, an optical cable terminal box, a surge arrester and a terminal block 15. The terminal block 15 is fixed to the inner wall of the enclosure 1 with screws.
[0035] The surface of the first partition 13 is provided with holes for threading wires.
[0036] The second partition 14 has evenly spaced waist-shaped holes for fixing and threading wires.
[0037] The bottom of the housing 1 has a wire-passing hole 16 for threading wires.
[0038] The terminal block 15 is installed on the inner wall of the enclosure 1.
[0039] The front door 11 is equipped with an opening and closing lock 12, and a safety line 17 is connected between the front door 11 and the enclosure 1. The safety line 17 is yellow-green and is used to connect the enclosure door to the grounding system inside the enclosure for safety protection.
[0040] The enclosure 1 has a mounting groove 18 for fixed installation on the rear side, and downward-facing heat dissipation slots on both sides for heat dissipation.
[0041] This technical solution integrates DC and AC power distribution functions into a single enclosure structure, reducing space occupation, simplifying the installation process, lowering maintenance costs, and improving the flexibility and scalability of the power distribution system. By integrating safety measures such as overload protection, short circuit protection, and leakage protection, it ensures that the power supply can be quickly cut off in various abnormal situations, protecting the safety of equipment and personnel. It also achieves modular design, allowing users to flexibly configure DC and AC power distribution modules according to actual needs to adapt to different application scenarios and load requirements.
[0042] This distribution box integrates AC and DC power supply into a single enclosure, enabling dual AC and DC power supply functionality. It boasts high space utilization and features a front-opening door with interlocking for easy opening and closing, offering flexibility and convenience. An internal regulated power supply provides stable power, while an air switch offers overload and short-circuit protection, automatically disconnecting the circuit when current exceeds the rated value. An AC switching power supply powers DC equipment, and industrial switches and optical terminal boxes are used for network data exchange and transmission, enabling fiber optic communication. The industrial switches are equipped with surge protectors. It can prevent damage to equipment from lightning overvoltage, and the grounding wire connected to the terminal block can prevent leakage. The components inside the distribution box are modularly configured, with a first partition and a second partition inside. The first partition is used to install the regulated power supply, AC switching power supply and air switch on the upper part of the distribution box for easy centralized operation and maintenance. The second partition is used to install the industrial switch and optical terminal box in the lower middle part of the distribution box. The first partition, the second partition and the bottom of the distribution box are all provided with holes for cable passing in and out, as well as for connection and operation, making it easy to install, disassemble and maintain.
[0043] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A DC-AC integrated distribution box comprising a box (1) with a front opening door (11), characterized in that, The box (1) is provided with a voltage stabilizer, an air switch (2) with a socket (21), an AC 24 switching power supply (22), an industrial switch, an optical cable end box, a lightning arrester and a terminal post (15). The voltage stabilizer is connected with a 220V incoming line, the voltage stabilizer is connected with the air switch (2), the AC 24 switching power supply (22) is connected with the air switch (2), the industrial switch and the optical cable end box are connected through an optical fiber, the AC 24 switching power supply (22) and the industrial switch are connected with the terminal post (15) respectively, the industrial switch is connected with a lightning arrester through a network cable, the optical cable end box is connected with an optical fiber line, and the terminal post is further connected with an output power line and a grounding wire.
2. The integrated AC / DC power distribution box of claim 1, wherein, The box (1) is provided with a first partition (13) and a second partition (14), the voltage stabilizer, the air switch (2) and the AC 24 switching power supply (22) are arranged in a space formed by the first partition (13) and the inner side wall of the upper space of the box (1), and the industrial switch, the optical cable end box, the lightning arrester and the terminal post (15) are arranged in a space formed by the second partition (14) and the inner side wall of the upper space of the box (1).
3. The integrated AC / DC power distribution box of claim 2, wherein, The first partition (13) is provided with a hole for threading.
4. The integrated AC / DC power distribution box of claim 2, wherein, The second partition (14) is uniformly provided with a waist-shaped hole for fixing and threading.
5. The integrated AC / DC power distribution box of claim 1, wherein, The box (1) is provided with a wire hole (16) at the bottom for threading.
6. The integrated AC / DC power distribution box of claim 1, wherein, The terminal post (15) is arranged on the inner side wall of the box (1).
7. The integrated AC / DC power distribution box of claim 1, wherein, The front opening door (11) is provided with an opening and closing lock (12), and the front opening door (11) is connected with a safety wire (17) between the box (1).
8. The integrated AC / DC power distribution box of claim 1, wherein, The box (1) is provided with a mounting groove (18) at the rear side for fixing and mounting, and the box (1) is provided with a heat dissipation groove hole with an opening downward on both sides.