A repeater power supply box

Abstract

The application provides a repeater power supply box, which comprises a box body, a first power supply module, a second power supply module, a main control circuit board, an auxiliary circuit board and a plurality of external interfaces; the first power supply module and the second power supply module are installed on the upper part of the box body, the first power supply module and the second power supply module are both used for converting input electric energy into an adaptive voltage and outputting, and the first power supply module and the second power supply module are both provided with an output interface for power connection; the first power supply module and the second power supply module are respectively electrically connected with the main control circuit board and the auxiliary circuit board through cables, the main control circuit board and the auxiliary circuit board are electrically connected through a cable, and the external interfaces are correspondingly electrically connected with the main control circuit board and the auxiliary circuit board through cables. The first power supply module and the second power supply module are arranged to supply power to the main control circuit board and the auxiliary circuit board, so that the signal pressure drop caused by the excessively long communication distance is solved, and the communication interruption or signal distortion problem between the control console and the working surface is further caused.

Description

Technical Field

[0001] This application relates to the field of power supply box technology, specifically to a repeater power supply box. Background Technology

[0002] In the construction and operation of intelligent fully mechanized mining faces, in order to meet the needs of large-scale operations, the supporting power supply, liquid supply and communication systems all need to be laid out over long distances. The length of the communication cables needs to be increased in tandem with the extension of the mining face.

[0003] However, due to the limitations of the transmission characteristics of communication cables, signal voltage drop is very likely to occur after long-distance laying, which leads to signal attenuation and distortion between the control console and the terminal equipment on the working face, and may even cause communication interruption. This seriously affects the reliability of key communication functions such as the transmission of work instructions and equipment status feedback on the working face, thereby restricting the production efficiency and operational safety of the intelligent fully mechanized mining working face.

[0004] To mitigate signal attenuation over long distances, the industry typically requires additional signal enhancement equipment to compensate for signal loss. However, existing signal enhancement equipment relies on independent power systems, making it incompatible with the power needs of other equipment on the work surface. Furthermore, current power supply boxes on the work surface generally suffer from design flaws such as compact internal space layout and limited power supply module configuration. Their number of power output ports and power output can only meet the power requirements of a single type of equipment, failing to provide stable power support for signal enhancement equipment and other supporting equipment simultaneously. This necessitates the deployment of multiple power systems on the work surface, increasing equipment deployment costs and space occupation, and further impacting communication and power supply stability due to interference between multiple power systems. Utility Model Content

[0005] This application provides a repeater power supply box to solve the problem of signal voltage drop caused by excessive communication distance, which in turn leads to communication interruption or signal distortion between the control console and the work surface.

[0006] This application provides a repeater power supply box, including: a box body;

[0007] The first power module, the second power module, the main control circuit board, the auxiliary circuit board, and several external interfaces are installed inside the enclosure.

[0008] The first power module and the second power module are installed on the upper part of the enclosure. Both the first power module and the second power module are used to convert the input electrical energy into an adaptive voltage and output it. Both the first power module and the second power module are provided with an output interface for power connection.

[0009] The main control circuit board and the auxiliary circuit board are installed at the bottom of the enclosure. The main control circuit board is used to control the power output, and the auxiliary circuit board is used to cooperate with the main control circuit board to power multiple devices.

[0010] Several external interfaces are located at the bottom of the enclosure;

[0011] The first power module and the second power module are electrically connected to the main control circuit board and the auxiliary circuit board respectively via cables. The main control circuit board and the auxiliary circuit board are electrically connected via cables. The external interface is electrically connected to the main control circuit board and the auxiliary circuit board via cables.

[0012] Optionally, the output interfaces of both the first power module and the second power module are waterproof aviation plugs, and the outer side of the output interface is provided with a sealing ring.

[0013] Optionally, the threshold adjustment element of the overvoltage protection circuit on the main control circuit board is an adjustable resistor, and the adjustment range of the adjustable resistor corresponds to a voltage value of 20V-23.4V; the detection element of the overcurrent protection circuit on the main control circuit board is a current transformer, and the rated detection current of the current transformer is 1.5 times the rated output current of the first power module.

[0014] Optionally, the auxiliary circuit board includes a power supply shunt unit, which includes at least two output branches. Each output branch is connected in series with a resettable fuse, and the output terminal of each output branch corresponds to an output interface.

[0015] Optionally, a first cable and a second cable are provided between the main control circuit board and the auxiliary circuit board. The first cable is used for power transmission, and the second cable is used for signal transmission. Both the first cable and the second cable are covered with metal shielding sleeves.

[0016] Optionally, the front panel of the enclosure is provided with three indicator light mounting holes, which correspond to the installation of the working indicator light of the first power module, the working indicator light of the second power module, and the working indicator light for indicating faults, respectively; the pins of each working indicator light are electrically connected to the status output terminals of the main control circuit board and the auxiliary circuit board through wires.

[0017] Optionally, a fuse is connected in series at the input terminals of both the first power module and the second power module. The rated current of the fuse is 1.2 times the maximum input current of the corresponding power module, and the fuse is installed in the fuse holder at the input terminals of the first power module and the second power module.

[0018] Optionally, each external interface at the bottom of the enclosure is equipped with a dust cover. The dust cover is rotatably connected to the bottom edge of the enclosure via a hinge, and the inside of the dust cover is provided with a rubber sealing gasket that matches the shape of the interface.

[0019] Optionally, the inner wall of the strip mounting groove inside the box is fitted with a buffer rubber pad with a thickness of 0.5mm-1mm, and the side wall of the strip mounting groove is provided with a through hole for cable passage, and the inner wall of the through hole is provided with a rubber sealing ring.

[0020] Optionally, several ventilation holes are provided on both sides of the enclosure.

[0021] As can be seen from the above technical solutions, this application provides a repeater power supply box, including a box body; a first power module, a second power module, a main control circuit board, an auxiliary circuit board, and several external interfaces disposed within the box body; the first and second power modules are installed on the upper part of the box body, both of which are used to convert input electrical energy into an adaptive voltage and output it, and both the first and second power modules are provided with output interfaces for power connection; the main control circuit board and the auxiliary circuit board are installed on the lower part of the box body, the main control circuit board is used to control the power output, and the auxiliary circuit board is used to cooperate with the main control circuit board to power multiple devices; several external interfaces are disposed on the bottom of the box body; the first and second power modules are electrically connected to the main control circuit board and the auxiliary circuit board respectively through cables, the main control circuit board and the auxiliary circuit board are electrically connected through cables, and the external interfaces are electrically connected to the main control circuit board and the auxiliary circuit board respectively through cables. By setting the first and second power modules to power the main control circuit board and the auxiliary circuit board, the problem of signal voltage drop caused by excessive communication distance, which in turn leads to communication interruption or signal distortion between the control console and the work surface, is solved. Attached Figure Description

[0022] To more clearly illustrate the technical solution of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the repeater power supply box structure provided in an embodiment of this application.

[0024] Figure label:

[0025] The components include: 1. Housing; 2. First power module; 3. Second power module; 4. Main control circuit board; 5. Auxiliary circuit board; 6. External interface; 7. Output interface; 8. First cable; 9. Second cable; 10. Working indicator light; 11. Dust cover; 12. Strip mounting slot; 13. Heat dissipation hole. Detailed Implementation

[0026] The embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described below do not represent all embodiments consistent with this application. They are merely examples of systems and methods consistent with some aspects of this application.

[0027] It should be noted that the brief descriptions of terms in this application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise stated, these terms should be understood in their ordinary and common meaning.

[0028] The terms "first," "second," "third," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar or related objects or entities, and do not necessarily imply a specific order or sequence, unless otherwise specified. It should be understood that such terms are interchangeable where appropriate.

[0029] The terms “comprising” and “having”, and any variations thereof, are intended to cover but not exclude inclusion, for example, a product or device that includes a range of components is not necessarily limited to all of the components that are clearly listed, but may include other components that are not clearly listed or that are inherent to such product or device.

[0030] To address the issue of signal voltage drop caused by excessively long communication distances, which can lead to communication interruptions or signal distortion between the control console and the work surface, please refer to [link to relevant documentation]. Figure 1 This application provides a repeater power supply box in some embodiments, including:

[0031] Box 1;

[0032] The first power module 2, the second power module 3, the main control circuit board 4, the auxiliary circuit board 5, and several external interfaces 6 are installed inside the enclosure 1.

[0033] The first power module 2 and the second power module 3 are installed on the upper part of the housing 1. Both the first power module 2 and the second power module 3 are used to convert the input electrical energy into an adaptive voltage and output it. Both the first power module 2 and the second power module 3 are provided with an output interface 7 for power connection.

[0034] The main control circuit board 4 and the auxiliary circuit board 5 are installed at the bottom of the enclosure 1. The main control circuit board 4 is used to control the power output, and the auxiliary circuit board 5 is used to cooperate with the main control circuit board 4 to supply power to multiple devices.

[0035] Several external interfaces 6 are located at the bottom of the housing 1.

[0036] The first power module 2 and the second power module 3 are electrically connected to the main control circuit board 4 and the auxiliary circuit board 5 respectively via cables. The main control circuit board 4 and the auxiliary circuit board 5 are electrically connected via cables. The external interface 6 is electrically connected to the main control circuit board 4 and the auxiliary circuit board 5 respectively via cables.

[0037] The enclosure 1 integrates a first power module 2, a second power module 3, a main control circuit board 4, an auxiliary circuit board 5, and several external interfaces 6, forming a collaborative system through scientific layout and stable electrical connections. The first power module 2 and the second power module 3, installed on the upper part of the enclosure 1, not only undertake the conversion and output of input electrical energy to the appropriate voltage, but also provide stable and balanced power support for the entire communication and power supply system through their built-in power connection output interfaces 7, reducing the risk of signal voltage drop exacerbated by power supply fluctuations. The main control circuit board 4, installed on the lower part of the enclosure 1, acts as a control unit, regulating power output parameters and optimizing the transmission logic of communication signals. The auxiliary circuit board 5 works in conjunction with the main control circuit board 4 to distribute the power supply pressure of multiple devices while enhancing the anti-interference capability of signal transmission, avoiding signal distortion caused by excessive load on a single circuit.

[0038] Several external interfaces 6 are located at the bottom of the enclosure 1, serving as connection hubs between the equipment and various terminals and control consoles on the work surface. The short-path layout reduces signal transmission loss.

[0039] In terms of connectivity, the first power module 2 and the second power module 3 are connected to the main control circuit board 4 and the auxiliary circuit board 5 respectively through low-loss cables to ensure that the transmission of the adapted voltage is attenuated. The main control circuit board 4 and the auxiliary circuit board 5 establish high-speed communication and power linkage through cables to ensure the accurate interaction of control commands and signals. The external interface 6 is connected to the main control circuit board 4 and the auxiliary circuit board 5 respectively through corresponding cables to effectively offset the signal voltage drop caused by long-distance transmission and ensure the continuity of communication and the accuracy of signals between the control console and the work surface.

[0040] In some embodiments, the output interfaces 7 of the first power module 2 and the second power module 3 are both waterproof aviation plugs, and the plugs are provided with sealing rings on the outside.

[0041] The output interfaces 7 of both the first power module 2 and the second power module 3 use waterproof aviation connectors, and are equipped with sealing rings on the outside of the connectors to form a double-sealed protection structure. Specifically, the waterproof aviation connectors are suitable for the harsh working conditions often faced by the fully mechanized mining operation surface, such as water spray, humidity, and dust. The waterproof aviation connectors themselves have high-strength waterproof and dustproof basic performance. With the outer sealing rings, they can further prevent moisture, dust, and other impurities from entering the interface. This not only avoids poor contact and short circuits caused by moisture and dust accumulation, but also ensures that the power transmission from the first power module 2 and the second power module 3 to the main control circuit board 4 and the auxiliary circuit board 5 is always stable and reliable. It also prevents interface damage from affecting power conversion and output efficiency, avoiding the risk of increased signal voltage drop due to interface failure from the source of power transmission, and indirectly ensuring the continuity and signal accuracy of communication between the control console and the working surface. At the same time, the sealed protection design can also improve the wear and corrosion resistance of the power module interfaces, extend the service life of the modules and repeater power boxes, and reduce maintenance frequency and costs.

[0042] In some embodiments, the threshold adjustment element of the overvoltage protection circuit on the main control circuit board 4 is an adjustable resistor, and the adjustment range of the adjustable resistor corresponds to a voltage value of 20V-23.4V; the detection element of the overcurrent protection circuit on the main control circuit board 4 is a current transformer, and the rated detection current of the current transformer is 1.5 times the rated output current of the first power module 2.

[0043] Specifically, the overvoltage protection circuit uses an adjustable resistor to flexibly adjust the threshold. The overvoltage protection activation threshold can be set according to the actual working voltage requirements of different devices in the intelligent integrated amplifier working face. When the supply voltage exceeds the set value within the range of 20V-23.4V, the protection circuit quickly responds to cut off or limit the output to prevent excessive voltage from damaging the main control circuit board 4, auxiliary circuit board 5, and external connected devices. The current transformer used in the overcurrent protection circuit has a rated detection value of 1.5 times the rated output current of the first power module 2. It can be compatible with the short-term inrush current at the moment of device startup to avoid false triggering of protection and affect normal startup. At the same time, when the circuit has a continuous overcurrent, the current transformer can accurately detect and trigger the protection to prevent the risk of overcurrent causing circuit overheating, cable burnout, etc.

[0044] In some embodiments, the auxiliary circuit board 5 includes a power supply shunt unit, which includes at least two output branches. Each output branch is connected in series with a self-resetting fuse, and the output terminal of each output branch corresponds to an output interface 7.

[0045] Each output branch has a self-resetting fuse connected in series, and the output terminal of each output branch corresponds to an output interface 7. Specifically, the power supply shunt unit distributes the power regulated by the main control circuit board 4, providing adapted power to multiple devices on the intelligent integrated amplifier working face simultaneously through multiple output branches. The self-resetting fuse connected in series on the branch acts as a protective element. When a device connected to a branch experiences a fault that causes the current to exceed the safety threshold, the self-resetting fuse will quickly disconnect the branch, blocking the abnormal current transmission and preventing the fault from spreading to other branches or the main circuit. When the fault is cleared and the current returns to normal, the self-resetting fuse will automatically resume conduction without manual replacement, ensuring that the branch is powered normally again.

[0046] The multi-output branch shunt structure meets the need for simultaneous power supply to multiple devices on the working face, avoiding excessive load on a single power supply link and improving the compatibility and efficiency of the power supply system. On the other hand, the addition of self-resetting fuses enables precise protection at the branch level. When a single device fails, only the corresponding branch is disconnected, without affecting the normal operation of other devices. This significantly reduces the risk of overall power outage due to local faults and indirectly ensures the continuity of the communication link between the control console and the working face. At the same time, the self-resetting feature reduces the frequency of manual maintenance under harsh working conditions, improves the durability and operational stability of the equipment, and is more suitable for the complex, dusty, and high-humidity environment of the fully mechanized mining working face.

[0047] In some embodiments, a first cable 8 and a second cable 9 are provided between the main control circuit board 4 and the auxiliary circuit board 5. The first cable 8 is used for power transmission, and the second cable 9 is used for signal transmission. Both the first cable 8 and the second cable 9 are covered with metal shielding sleeves.

[0048] The main control circuit board 4 and the auxiliary circuit board 5 are connected by a first cable 8 and a second cable 9. The first cable 8 is dedicated to power transmission between the two circuit boards, ensuring a stable supply of regulated power from the main control circuit board 4 to the auxiliary circuit board 5, providing energy support for the power supply distribution function of the auxiliary circuit board 5. The second cable 9 focuses on signal transmission, undertaking the interactive tasks of control commands, equipment status feedback, and parameter adjustment between the main control circuit board 4 and the auxiliary circuit board 5, ensuring the logical consistency of their collaborative operation. Both the first cable 8 and the second cable 9 are encased in metal shielding sleeves, forming a double protection structure.

[0049] By separating the power and signal transmission cables through the first cable 8 and the second cable 9, interference from voltage fluctuations and current noise during power transmission is avoided, reducing the risk of signal distortion at a physical level and ensuring accurate interaction of commands and status information between the main and auxiliary circuit boards. Furthermore, the metal shielding sleeve effectively isolates electromagnetic radiation interference generated by numerous motors and equipment operating in the intelligent integrated amplifier working face, preventing external electromagnetic noise from intruding into the cable and affecting signal quality, while also preventing the cable's own transmitted signals from interfering with external signals. In addition, the metal shielding sleeve enhances the cable's wear and compression resistance, adapting to the harsh environment of dusty working faces and frequent equipment movement, reducing connection interruptions caused by physical damage to the cable. Ultimately, by ensuring stable power and signal transmission between the main and auxiliary circuit boards, the continuity and reliability of communication between the control console and the working face are indirectly maintained.

[0050] In some embodiments, the front panel of the housing 1 is provided with three indicator light mounting holes, which are respectively used to install the working indicator light 10 of the first power module 2, the working indicator light 10 of the second power module 3, and the working indicator light 10 for indicating faults; the pins of the working indicator light 10 are electrically connected to the status output terminals of the main control circuit board 4 and the auxiliary circuit board 5 through wires.

[0051] The pin of the working indicator light 10 of the first power module 2 is electrically connected to the corresponding status output terminal of the main control circuit board 4 through a wire, so as to provide real-time feedback on the operating status of the first power module 2; the pin of the working indicator light 10 of the second power module 3 is also connected to the corresponding status output terminal of the main control circuit board 4 or the auxiliary circuit board 5 through a wire, so as to synchronously display the working status of the second power module 3; the pin of the fault indicator light 10 is electrically connected to the fault detection output terminal of the main control circuit board 4 and the auxiliary circuit board 5. When any module or connection link is abnormal, the indicator light will emit an alarm signal by lighting up or flashing.

[0052] In some embodiments, a fuse is connected in series at the input terminals of both the first power module 2 and the second power module 3. The rated current of the fuse is 1.2 times the maximum input current of the corresponding power module, and the fuse is installed in the fuse holder at the input terminals of the first power module 2 and the second power module 3.

[0053] In this configuration, both the first power module 2 and the second power module 3 have fuses connected in series at their input terminals. The rated current of each fuse is set to 1.2 times the maximum input current of the corresponding power module, and each fuse is installed in the fuse holder at the input terminal of its respective power module.

[0054] Specifically, the fuse, acting as an overcurrent protection component, will quickly melt and disconnect the power input when the external input current exceeds the set rated value due to power grid fluctuations, line short circuits, or equipment malfunctions. This prevents excessive current from flowing into the internal circuitry of the power module and avoids burnout due to overcurrent. The rated value setting of 1.2 times the maximum input current provides a safety margin for current fluctuations during normal operation of the power module, preventing accidental melting from affecting normal power supply, while also ensuring reliable operation in the event of continuous overcurrent. Furthermore, the fuse is installed within a fuse holder, facilitating quick replacement after melting. This design is suitable for the harsh environment of intelligent integrated amplifier work areas, characterized by high dust levels and limited space, reducing the complexity of maintenance operations.

[0055] In some embodiments, each external interface 6 at the bottom of the housing 1 is provided with a dust cover 11. The dust cover 11 is rotatably connected to the bottom edge of the housing 1 via a hinge, and the inner side of the dust cover 11 is provided with a rubber sealing gasket that matches the shape of the interface.

[0056] Specifically, each external interface 6 at the bottom of the housing 1 is equipped with a dust cover 11. The dust cover 11 is connected to the bottom edge of the housing 1 by a hinge, making it easy to open when the interface is in use and close when not in use. The inside of the dust cover 11 is equipped with a rubber sealing gasket that is precisely matched to the shape of the corresponding external interface 6. When closed, it can fit tightly with the interface to form a sealed structure, which is suitable for the harsh environment of high dust and easy water spray in intelligent fully mechanized mining face. When not in use, closing the dust cover 11 can directly prevent dust and coal dust from entering the interface. The rubber sealing gasket further enhances the sealing effect, isolates moisture, humidity and fine impurities, and avoids poor contact, oxidation and corrosion or short circuit failure of the interface due to dust accumulation and moisture. The hinge connection method not only prevents the dust cover 11 from being lost, but also makes the opening and closing operation of the interface convenient and efficient, without the need for additional storage accessories.

[0057] In some embodiments, the inner wall of the strip mounting groove 12 inside the housing 1 is provided with a buffer rubber pad with a thickness of 0.5mm-1mm, and the side wall of the mounting groove is provided with a through hole for cable passage, and the inner wall of the through hole is provided with a rubber sealing ring.

[0058] Among them, the buffer rubber pad can adapt to the continuous vibration generated during the operation of the intelligent fully mechanized mining face equipment. It can buffer and disperse the vibration impact force through its own elasticity, and prevent the power module and circuit board installed in the slot from becoming loose, the interface from falling off, or the internal components from being damaged due to long-term vibration. The through holes for cables facilitate the neat arrangement of cables between various components and avoid messy tangling of the lines. The rubber sealing ring on the inner wall of the through hole can fit tightly against the outer wall of the cable, preventing dust and moisture from entering the interior of the box 1 through the gap of the through hole, while reducing the friction and wear between the cable and the edge of the through hole.

[0059] In some embodiments, a plurality of heat dissipation holes 13 are provided on both sides of the housing 1.

[0060] By setting several heat dissipation holes 13 on both sides of the enclosure 1, an air convection channel can be formed. The power module will continuously generate heat when it performs power conversion, and the circuit board will perform control and signal processing. The heat dissipation holes 13 can quickly expel the high-temperature air accumulated in the enclosure 1, while introducing relatively low-temperature air from the outside, effectively reducing the overall temperature inside the enclosure and preventing heat accumulation.

[0061] Similar parts between the embodiments provided in this application can be referred to mutually. The specific implementation methods provided above are only a few examples under the overall concept of this application and do not constitute a limitation on the scope of protection of this application. For those skilled in the art, any other implementation methods extended from the solution of this application without creative effort shall fall within the scope of protection of this application.

Claims

1. A repeater power supply box, characterized in that, include: Box (1); The first power module (2), the second power module (3), the main control circuit board (4), the auxiliary circuit board (5), and several external interfaces (6) are installed inside the enclosure (1); The first power module (2) and the second power module (3) are installed on the upper part of the housing (1). The first power module (2) and the second power module (3) are both used to convert the input electrical energy into an adaptive voltage and output it. The first power module (2) and the second power module (3) are both provided with an output interface (7) for power connection. The main control circuit board (4) and the auxiliary circuit board (5) are installed at the lower part of the housing (1). The main control circuit board (4) is used to control the power output, and the auxiliary circuit board (5) is used to cooperate with the main control circuit board (4) to supply power to multiple devices. The plurality of external interfaces (6) are disposed at the bottom of the housing (1); The first power module (2) and the second power module (3) are electrically connected to the main control circuit board (4) and the auxiliary circuit board (5) respectively via cables. The main control circuit board (4) and the auxiliary circuit board (5) are electrically connected via cables. The external interface (6) is electrically connected to the main control circuit board (4) and the auxiliary circuit board (5) via cables.

2. The repeater power supply box according to claim 1, characterized in that, The output interfaces (7) of the first power module (2) and the second power module (3) are both waterproof aviation plugs, and the outer side of the output interface (7) is provided with a sealing ring.

3. The repeater power supply box according to claim 1, characterized in that, The threshold adjustment element of the overvoltage protection circuit on the main control circuit board (4) is an adjustable resistor, and the adjustment range of the adjustable resistor corresponds to a voltage value of 20V-23.4V; the detection element of the overcurrent protection circuit on the main control circuit board (4) is a current transformer, and the rated detection current of the current transformer is 1.5 times the rated output current of the first power module (2).

4. The repeater power supply box according to claim 1, characterized in that, The auxiliary circuit board (5) includes a power supply shunt unit, which includes at least two output branches. Each output branch is connected in series with a self-resetting fuse, and the output end of each output branch corresponds to an output interface (7).

5. The repeater power supply box according to claim 1, characterized in that, A first cable (8) and a second cable (9) are provided between the main control circuit board (4) and the auxiliary circuit board (5). The first cable (8) is used for power transmission, and the second cable (9) is used for signal transmission. Both the first cable (8) and the second cable (9) are covered with metal shielding sleeves.

6. The repeater power supply box according to claim 1, characterized in that, The front panel of the housing (1) is provided with three indicator light mounting holes, which are respectively used to install the working indicator light (10) of the first power module (2), the working indicator light (10) of the second power module (3), and the working indicator light (10) used to indicate a fault; the pins of the working indicator light (10) are electrically connected to the status output terminals of the main control circuit board (4) and the auxiliary circuit board (5) through wires.

7. The repeater power supply box according to claim 1, characterized in that, Both the first power module (2) and the second power module (3) have fuses connected in series at their input terminals. The rated current of the fuse is 1.2 times the maximum input current of the corresponding power module, and the fuse is installed in the fuse holder at the input terminals of the first power module (2) and the second power module (3).

8. The repeater power supply box according to claim 1, characterized in that, Each external interface (6) at the bottom of the box (1) is equipped with a dust cover (11). The dust cover (11) is rotatably connected to the bottom edge of the box (1) by a hinge, and the inner side of the dust cover (11) is provided with a rubber sealing gasket that matches the shape of the interface.

9. The repeater power supply box according to claim 1, characterized in that, The inner wall of the strip mounting groove (12) inside the box (1) is fitted with a buffer rubber pad with a thickness of 0.5mm-1mm, and the side wall of the strip mounting groove (12) is provided with a through hole for cable to pass through, and the inner wall of the through hole is provided with a rubber sealing ring.

10. The repeater power supply box according to claim 1, characterized in that, The box (1) has several heat dissipation holes (13) on both sides.

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