Combined dc power supply device

Abstract

The utility model belongs to the field of comprehensive security, relates to a combined direct current power supply equipment, including rack type casing, combined mainboard and direct current source module, the combined mainboard is installed in the inner bottom of rack type casing, and a plurality of direct current source modules are installed in the inside of rack type casing in matrix distribution type integration, each direct current source module includes ac input hot plug module, power module and direct current output hot plug module, and the ac input hot plug module is electrically connected with the power module, and the power module is electrically connected with the direct current output hot plug module. The direct current power supply equipment adopts rack type structure and installs a plurality of direct current source modules in the inside of rack type casing, and each direct current source module is installed in the standard machine room in the rack type casing, so that each electronic component runs in the suitable environment, which can help to increase the service life of direct current source module, improve the use performance, help the integrated and automatic inspection, make the maintenance and replacement more efficient and convenient.

Description

Technical Field

[0001] This utility model belongs to the field of integrated security, specifically relating to a combined DC power supply device. Background Technology

[0002] In the field of integrated security systems, devices such as cameras, microphones, and trunking broadcast systems all require DC power. However, the lifespan and reliability of DC power supplies installed in these devices are significantly reduced due to the uncertainty of the installation environment, greatly increasing the difficulty of inspection and maintenance. DC power supplies for these devices are often installed outdoors or in ceilings indoors, subjecting them to extreme temperatures such as heat and cold, which further shortens the lifespan and degrades the performance of the equipment. The dispersed and enclosed installation locations of power supply equipment also significantly increase the difficulty of inspection, maintenance, and replacement. Centralized power supply systems often employ a one-to-many configuration; a power failure in one device will affect the operation of multiple security devices, making it impossible to guarantee the high security requirements of security systems. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model proposes a modular DC power supply device. This device uses a rack-mount structure to combine multiple DC power modules together. The device can be installed uniformly in a standard computer room, allowing each electronic component to operate in a suitable environment. This helps to increase the service life of the DC power modules, improve their performance, and facilitate integrated and automated inspection.

[0004] This utility model is achieved through the following technical solution:

[0005] A modular DC power supply device includes a rack-mount housing, a modular motherboard, and DC power modules. The modular motherboard is mounted on the inner bottom of the rack-mount housing. Multiple hot-swappable DC power modules are arranged in a matrix-distributed integrated configuration within the rack-mount housing. Each DC power module includes an AC input hot-swappable module, a power supply module, and a DC output hot-swappable module. The AC input hot-swappable module is electrically connected to the power supply module, and the power supply module is electrically connected to the DC output hot-swappable module. The modular motherboard is used to connect to the AC power supply and transmit AC power to the AC input hot-swappable modules of each DC power module. The AC input hot-swappable module supplies AC power to the power module, which in turn steps down and rectifies the AC power and supplies DC power to the DC output hot-swappable module. The DC output hot-swappable module outputs DC power to remotely power devices. This DC power supply equipment uses a rack-mount structure to combine multiple DC power modules inside a rack-mount housing. Each DC power module is uniformly installed in a standard computer room with the rack-mount housing, ensuring that the electronic components operate in a suitable environment. This helps increase the service life and improve the performance of the DC power modules, and facilitates integrated and automated inspection, making maintenance and replacement more efficient and convenient.

[0006] Furthermore, the DC power supply equipment also includes a fused AC input interface mounted on the side wall of the rack-mount housing. The AC power input terminal of the modular motherboard is electrically connected to the fused AC input interface. The fused AC input interface provides AC power input to the modular motherboard by connecting an external AC power source, and will fuse and trip when the current is too high to protect the modular motherboard and each DC power module.

[0007] Furthermore, the AC input hot-swappable module includes AC hot-swappable terminals, an AC conversion PCB board, and a board-to-board plug-in cable. The AC hot-swappable terminals are composed of 3P hollow 1P female connectors, which are soldered onto the AC conversion PCB board. The combined motherboard includes a motherboard PCB board and multiple 3P hollow 1P hot-swappable terminals embedded and soldered on it. The multiple 3P hollow 1P hot-swappable terminals of the combined motherboard correspond one-to-one with multiple DC power modules, and the AC hot-swappable terminals of the DC power modules are hot-swappable connected to the 3P hollow 1P hot-swappable terminals of the combined motherboard. The AC hot-swappable terminals on the AC conversion PCB board are electrically connected to the board-to-board plug-in cable via PCB board leads. The board-to-board plug-in cable is electrically connected to the power modules. The combined motherboard inputs AC power to the AC input hot-swappable module via the hot-swappable terminals. The PCB board leads of the AC input hot-swappable module transmit the input AC power to the board-to-board plug-in cable. The board-to-board plug-in cable inputs the input AC power to the power modules via 2P cables and plug-in terminals.

[0008] Furthermore, the DC output hot-swappable module includes DC hot-swappable terminals, a DC-DC conversion PCB board, and board-to-board plug-in cables. The DC hot-swappable terminals are composed of 4-pin female connectors soldered onto the DC-DC conversion PCB board. The modular motherboard also includes multiple 4-pin hot-swappable terminals embedded and soldered onto the motherboard PCB board. Each of the multiple 4-pin hot-swappable terminals on the modular motherboard corresponds one-to-one with a multiple DC power module, and the DC hot-swappable terminals of the DC power modules are hot-swappable to the 4-pin hot-swappable terminals on the modular motherboard. The DC hot-swappable terminals on the DC-DC conversion PCB board are connected to the board-to-board plug-in cables via PCB board leads. The board-to-board connector is electrically connected to the power module. The DC power supply device also includes multiple DC output interfaces mounted on the side wall of the rack-mount housing. Each of the multiple DC output interfaces corresponds to and is electrically connected to multiple 4P hot-swappable terminals on the combined motherboard. The power module inputs DC power to the DC output hot-swappable module. The DC output hot-swappable module outputs two DC power lines. One DC power line is transmitted to the DC output interface via the 4P hot-swappable terminal on the combined motherboard for remote power supply. The other DC power line is transmitted to the motherboard PCB via the 4P hot-swappable terminal on the combined motherboard for voltage detection.

[0009] Furthermore, the DC power module also includes an ABS housing, which has a hollow bottom and a skylight top structure. The AC input hot-swappable module, power module, and DC output hot-swappable module of the DC power module are all installed inside the ABS housing. The ABS housing is used to shield and protect the AC input hot-swappable module, power module, and DC output hot-swappable module of the DC power module. An aluminum alloy heat sink is detachably installed (adhesive or screw connection) at the top skylight of the ABS housing. The aluminum alloy heat sink is tightly connected at the skylight and is used for heat dissipation of various electronic components inside the ABS housing.

[0010] Furthermore, the DC power supply equipment also includes a voltage detection module installed inside a rack-mount housing. The voltage detection module comprises a fusion motherboard, a step-down module, a detection module, and a signal conversion module. The fusion motherboard, installed inside the rack-mount housing, provides wiring connections for the step-down module, detection module, and signal conversion module, and provides external DC power to power the voltage detection module. The step-down module reduces the input DC voltage to 3.3V and provides a stable 3.3V power supply to the detection module. Two sets of 8-pin voltage detection headers are soldered onto the motherboard PCB of the fusion motherboard, and the 4-pin hot-swappable terminals on the motherboard PCB are located on the main... The PCB board is electrically connected to two sets of 8-pin voltage detection headers via PCB board leads. The detection module includes 16 pins electrically connected to the two sets of 8-pin voltage detection headers, enabling the detection module to connect to the circuit under test. The detection module can acquire the voltage of the circuit under test and output a TTL signal. The signal conversion module receives the TTL signal from the detection module and converts the TTL signal into a TCP protocol signal. The side wall of the rack-mount housing is equipped with a signal output interface for connecting to an external switch. The signal conversion module is electrically connected to the signal output interface. After the signal conversion module converts the TTL signal into a TCP protocol signal, it is connected to the switch through the signal output interface.

[0011] Furthermore, the rack-type housing includes a bottom bakelite board, a front baffle, left and right side panels, a rear baffle, a perforated mainboard upper panel, and a perforated integrated cover plate;

[0012] The modular motherboard is mounted on a bottom bakelite board, which provides an insulated and stable platform for the modular motherboard.

[0013] The hollow motherboard upper panel is installed on the bottom bakelite board with screws, and the combined motherboard is located between the bottom bakelite board and the hollow motherboard upper panel. The hollow motherboard upper panel has multiple terminal insertion slots that allow the 3P empty 1P hot-swappable terminals and 4P hot-swappable terminals of the combined motherboard to pass through. Each terminal insertion slot perfectly matches the 3P empty 1P hot-swappable terminals and 4P hot-swappable terminals of the combined motherboard.

[0014] The front panel has multiple DC output slots, each corresponding to a DC output interface. The DC output slots provide an embedded frame for DC2.1 or RJ45 terminals, and have slots for embedding and installing signal output interfaces.

[0015] The left and right side panels have multiple air circulation holes, providing a convection channel for the airflow circulation inside and outside the rack-type housing;

[0016] The rear panel has a cutout with an AC input slot for embedding and installing an AC input interface with a fuse.

[0017] As can be seen from the above technical solution, the combined DC power supply equipment provided by this utility model has the following advantages:

[0018] This DC power supply equipment adopts a rack-mount structure, using a PCB board and matching hot-swappable terminals to assemble multiple DC power modules inside the rack-mount housing. Each DC power module is uniformly installed in a standard computer room along with the rack-mount housing, ensuring that the electronic components operate in a suitable environment. This helps to increase the service life and improve the performance of the DC power modules, and facilitates integrated and automated inspection. The DC power modules and the combined motherboard are hot-swappable, making disassembly and assembly easy and maintenance and replacement more efficient and convenient. The voltage detection module can detect the DC voltage output by the DC power modules and convert it into TCP protocol for interface with the detection system. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0020] Figure 1 This is a three-dimensional structural diagram of the frame-type housing in this utility model.

[0021] Figure 2 This is a circuit diagram of a single DC power supply module in this utility model.

[0022] The components in the diagram are named as follows: 1. Rack-mount housing; 1.1. Bottom bakelite board; 1.2. Front baffle; 1.3. Left and right side panels; 1.4. Rear baffle; 1.5. Hollowed-out motherboard upper panel; 1.6. Hollowed-out integrated cover plate; 2. ABS housing; 3. DC output channel; 4. Signal output channel; 5. Air circulation hole; 6. Terminal plug-in slot. Detailed Implementation

[0023] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0024] In the description of this application, it should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", "front", "back", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] A combined DC power supply device mainly consists of a rack-mount housing 1, a combined main board, a DC power module, an AC input interface with fuse, a DC output interface, and a voltage detection module.

[0026] like Figure 1 As shown, the frame-type housing 1 includes a bottom bakelite board 1.1, a front baffle 1.2, left and right side panels 1.3, a rear baffle 1.4, a hollowed-out main board upper panel 1.5, and a hollowed-out integrated cover plate 1.6;

[0027] The bottom bakelite board 1.1 is made of 5mm orange-red bakelite. The modular motherboard is mounted on the bottom bakelite board 1.1, which provides an insulated and stable platform for the modular motherboard.

[0028] The hollow motherboard upper panel 1.5 is made of 5mm orange-red bakelite. The hollow motherboard upper panel 1.5 is installed on the bottom bakelite board 1.1 with screws, and the combined motherboard is located between the bottom bakelite board 1.1 and the hollow motherboard upper panel 1.5.

[0029] The 1.6-inch hollow one-piece cover is made of 5mm 6061T aluminum alloy CNC machined into one piece, and the surface is anodized (red).

[0030] The front baffle is made of 5mm 6061T aluminum alloy CNC machined into one piece, and the surface is anodized (red).

[0031] Both the left and right side panels 1.3 are made of 5mm 6061T aluminum alloy CNC machined into one piece, and the surface is anodized (red), and has multiple air circulation holes 5, which provide convection channels for the airflow circulation inside and outside the frame housing 1;

[0032] The rear panel 1.4 is made of 5mm 6061T aluminum alloy CNC machined into one piece, and the surface is anodized (red). It has a hollowed-out AC input slot for embedding and installing an AC input interface with fuse.

[0033] The combined motherboard includes a motherboard PCB, multiple 3P empty 1P hot-swappable terminals embedded and soldered on the motherboard PCB, and multiple 4P hot-swappable terminals embedded and soldered on the motherboard PCB.

[0034] The hollow motherboard upper panel 1.5 has multiple terminal insertion slots 6 that allow the 3P hollow 1P hot-swappable terminals and 4P hot-swappable terminals of the modular motherboard to pass through. Each terminal insertion slot 6 perfectly matches the 3P hollow 1P hot-swappable terminals and 4P hot-swappable terminals of the modular motherboard.

[0035] The AC input interface with fuse is embedded in the hollowed-out AC input slot on the rear panel 1.4. The AC power input terminal of the combined motherboard is electrically connected to the AC input interface with fuse. The AC input interface with fuse provides AC power input to the combined motherboard by connecting an external AC power source, and will blow the fuse when the current is too large to protect the combined motherboard and each DC power module.

[0036] The aforementioned DC output interface is provided with multiple DC output interfaces, which are DC2.1 terminals or RJ45 terminals. Multiple DC output slots 3 are hollowed out on the front baffle, and each of the multiple DC output slots 3 corresponds to a DC output interface. The DC output slots 3 provide an embedded frame for the DC2.1 or RJ45 terminals. The multiple DC output interfaces are respectively embedded and installed in the multiple hollowed-out DC output slots 3 on the front baffle. The multiple DC output interfaces correspond one-to-one with and are electrically connected to the multiple 4P hot-swappable terminals of the combined motherboard. DC power is delivered to the DC output interfaces through the 4P hot-swappable terminals of the combined motherboard for remote power supply.

[0037] The DC power module is a hot-swappable DC power module, and multiple DC power modules are provided. These multiple DC power modules are integrated and installed in a matrix distributed manner inside the rack-type housing.

[0038] Each DC power module includes an ABS housing 2, an AC input hot-swappable module, a power module, and a DC output hot-swappable module;

[0039] like Figure 1As shown in the figure, a rack-mounted housing 1 and an ABS housing 2 installed inside it are depicted. Other electronic components are not shown. The ABS housing 2 has a hollow bottom and a skylight top structure. The AC input hot-swappable module, power module, and DC output hot-swappable module of the DC power module are all installed inside the ABS housing 2. The ABS housing 2 is used to shield and protect the AC input hot-swappable module, power module, and DC output hot-swappable module of the DC power module. An aluminum alloy heat sink is detachably installed (adhesive or screw connection) at the skylight top of the ABS housing 2. The aluminum alloy heat sink is tightly connected at the skylight and is used for heat dissipation of the various electronic components inside the ABS housing 2. Specifically, embedded hot-melt nuts are provided on all four sides of the ABS housing 2 for the assembly of the various components of the DC power module.

[0040] like Figure 2 As shown, the AC input hot-swappable module includes AC hot-swappable terminals, an AC conversion PCB board, and a board-to-board plug-in cable. The AC hot-swappable terminals are composed of 3P hollow 1P female connectors, which are soldered onto the AC conversion PCB board. Multiple 3P hollow 1P hot-swappable terminals of the combined motherboard correspond one-to-one with multiple DC power modules, and the AC hot-swappable terminals of the DC power modules are hot-swappable to the 3P hollow 1P hot-swappable terminals of the combined motherboard for easy assembly and disassembly. The AC hot-swappable terminals on the AC conversion PCB board are electrically connected to the board-to-board plug-in cable via PCB board leads. The board-to-board plug-in cable is electrically connected to the power modules. The combined motherboard inputs AC power to the AC input hot-swappable module via the hot-swappable terminals. The PCB board leads of the AC input hot-swappable module transmit the input AC power to the board-to-board plug-in cable. The board-to-board plug-in cable inputs the input AC power to the power modules via 2P cables and plug-in terminals.

[0041] like Figure 2As shown, the DC output hot-swappable module includes DC hot-swappable terminals, a DC-DC conversion PCB board, and a board-to-board plug-in cable. The DC hot-swappable terminals are composed of 4-pin female connectors soldered onto the DC-DC conversion PCB board. Multiple 4-pin hot-swappable terminals of the combined motherboard correspond one-to-one with multiple DC power modules, and the DC hot-swappable terminals of the DC power modules are hot-swappable to the 4-pin hot-swappable terminals of the combined motherboard. The DC hot-swappable terminals on the DC-DC conversion PCB board are electrically connected to the board-to-board plug-in cable via PCB board leads. The board-to-board plug-in cable is connected to the power supply... Module electrical connection; the combined motherboard is used to connect to the AC power supply and transmit the AC power to the AC input hot-swappable module of each DC power module. The AC input hot-swappable module is used to transmit the AC power to the power module. The power module is used to step down and rectify the AC power and transmit the DC power to the DC output hot-swappable module. The DC output hot-swappable module outputs two DC power. One DC power is transmitted to the DC output interface through the 4P hot-swappable terminal of the combined motherboard for remote power supply. The other DC power is transmitted to the motherboard PCB board through the 4P hot-swappable terminal of the combined motherboard for voltage detection.

[0042] Specifically, the DC output hot-swappable module also includes a step-down resistor and an LED indicator. One DC power supply for remote power supply is output from the DC-DC converter PCB board and then directly input to the 2P of the 4P hot-swappable terminal of the combined mainboard via the 2P of the 4P female connector of the DC hot-swappable terminal to provide the original voltage. Another DC power supply for voltage detection is output from the DC-DC converter PCB board and then input to the step-down resistor and connected in series with the LED indicator. The DC power at both ends of the LED indicator is then transferred to the other 2P of the 4P female connector of the DC hot-swappable terminal and input to the other 2P of the 4P hot-swappable terminal of the combined mainboard. The DC power output after stepping down is used as the detection voltage and is transmitted to the mainboard PCB board via the 4P hot-swappable terminal of the combined mainboard for voltage detection.

[0043] The voltage detection module is mounted on the bottom bakelite board 1.1, as follows: Figure 2As shown, the voltage detection module includes a fusion motherboard, a buck module, a detection module, and a signal conversion module. The fusion motherboard provides wiring connections for the buck module, detection module, and signal conversion module, as well as an external DC power supply to power the voltage detection module. The buck module reduces the input DC voltage to 3.3V and provides a stable 3.3V power supply to the detection module. Two sets of 8-pin voltage detection headers are soldered onto the motherboard PCB of the fusion motherboard. Two pins of the 4-pin hot-swappable terminals on the motherboard PCB, used for outputting the detection voltage, are electrically connected to the two sets of 8-pin voltage detection headers via PCB leads. The detection module includes the two sets of 8-pin... The 16 pins of the voltage detection header are electrically connected to the detection module, which connects the detection module to the circuit under test. The detection module can acquire the voltage of the circuit under test and output a TTL signal. The signal conversion module receives the TTL signal from the detection module and converts the TTL signal into a TCP protocol signal. The side wall of the rack-mount housing 1 is equipped with a signal output interface for connecting to an external switch. The signal conversion module is electrically connected to the signal output interface. After the signal conversion module converts the TTL signal into a TCP protocol signal, it is connected to the switch through the signal output interface. Specifically, the signal output interface is an RJ45 terminal. The front panel has a cutout for embedding and installing the signal output interface in a signal output slot 4.

[0044] The working principle of this utility model:

[0045] This DC power supply equipment adopts a rack-mount structure, combining multiple DC power modules inside a rack-mount housing. Each DC power module is uniformly installed in a standard computer room along with the rack-mount housing. During power supply, AC power input is provided to the combined motherboard through a fused AC input interface. The combined motherboard supplies AC power to each DC power module. The AC power is rectified by the DC power module and outputs DC power. The DC power module outputs two DC power lines. One DC power line is sent to the DC output interface for remote power supply through the 4P hot-swappable terminal of the combined motherboard. The other DC power line is stepped down and sent to the motherboard PCB board through the 4P hot-swappable terminal of the combined motherboard for voltage detection. The detection module of the voltage detection module is connected to the circuit under test. The detection module collects the voltage of the circuit under test and outputs a TTL signal. The signal conversion module receives the TTL signal from the detection module and converts the TTL signal into TCP protocol. After the signal conversion module converts the TTL signal into TCP protocol, it is connected to the switch through the signal output interface.

[0046] This DC power supply equipment adopts a rack-mount structure, using a PCB board and matching hot-swappable terminals to combine multiple DC power modules together. It can detect the DC voltage output by the DC power modules, convert it into TCP protocol for interface with the detection system. Each DC power module is uniformly installed in a standard computer room with a rack-mount housing, so that each electronic component operates in a suitable environment, which helps to increase the service life of the DC power modules, improve their performance, and facilitate integrated and automated inspection. The DC power modules and the combined motherboard are hot-swappable, which is convenient for disassembly and assembly, making maintenance and replacement more efficient and convenient.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A combined DC power supply device, comprising a rack-mount housing (1), a combined mainboard, and a DC power module, characterized in that: The combined motherboard is installed at the bottom of the rack-mount housing. The DC power modules are hot-swappable DC power modules, and multiple of them are arranged in a matrix distributed integrated installation inside the rack-mount housing. Each DC power module includes an AC input hot-swappable module, a power module, and a DC output hot-swappable module. The AC input hot-swappable module is electrically connected to the power module, and the power module is electrically connected to the DC output hot-swappable module. The combined motherboard is used to connect to the AC power supply and transmit the AC power to the AC input hot-swappable modules of each DC power module. The AC input hot-swappable module is used to transmit the AC power to the power module. The power module is used to step down and rectify the AC power and transmit the DC power to the DC output hot-swappable module. The DC output hot-swappable module is used to output DC power to enable remote equipment power supply.

2. The combined DC power supply equipment according to claim 1, characterized in that: The DC power supply equipment also includes a fused AC input interface mounted on the side wall of the rack housing (1), and the AC power input terminal of the combined motherboard is electrically connected to the fused AC input interface.

3. The combined DC power supply equipment according to claim 1 or 2, characterized in that: The AC input hot-swappable module includes AC hot-swappable terminals, an AC conversion PCB board, and a board-to-board plug-in cable. The AC hot-swappable terminals are composed of 3P hollow 1P female connectors, which are soldered onto the AC conversion PCB board. The combined motherboard includes a motherboard PCB board and multiple 3P hollow 1P hot-swappable terminals embedded and soldered on it. The multiple 3P hollow 1P hot-swappable terminals of the combined motherboard correspond one-to-one with multiple DC power modules, and the AC hot-swappable terminals of the DC power modules are hot-swappably connected to the 3P hollow 1P hot-swappable terminals of the combined motherboard. The AC hot-swappable terminals are electrically connected to the board-to-board plug-in cable on the AC conversion PCB board through PCB board leads, and the board-to-board plug-in cable is electrically connected to the power modules.

4. The combined DC power supply equipment according to claim 3, characterized in that: The DC output hot-swappable module includes DC hot-swappable terminals, a DC-DC conversion PCB board, and a board-to-board plug-in cable. The DC hot-swappable terminals are composed of 4-pin female connectors soldered onto the DC-DC conversion PCB board. The combined motherboard also includes multiple 4-pin hot-swappable terminals embedded and soldered onto the motherboard PCB board. The multiple 4-pin hot-swappable terminals of the combined motherboard correspond one-to-one with multiple DC power modules, and the DC hot-swappable terminals of the DC power modules are hot-swappable to the 4-pin hot-swappable terminals of the combined motherboard. The DC hot-swappable terminals are electrically connected to the board-to-board plug-in cable on the DC-DC conversion PCB board through PCB board leads. The board-to-board plug-in cable is electrically connected to the power modules.

5. The combined DC power supply equipment according to claim 4, characterized in that: The DC power supply device also includes multiple DC output interfaces installed on the side wall of the rack-mount housing (1). The multiple DC output interfaces correspond one-to-one with and are electrically connected to multiple 4P hot-swappable terminals of the combined motherboard. The power module inputs DC power to the DC output hot-swappable module. The DC output hot-swappable module outputs two DC power sources. One DC power source is transmitted to the DC output interface via the 4P hot-swappable terminal of the combined motherboard for remote power supply. The other DC power source is transmitted to the motherboard PCB via the 4P hot-swappable terminal of the combined motherboard for voltage detection.

6. The combined DC power supply equipment according to claim 5, characterized in that: The DC power module also includes an ABS housing (2), which has a hollow bottom and a skylight top structure. The AC input hot-swappable module, power module and DC output hot-swappable module of the DC power module are all installed inside the ABS housing (2). An aluminum alloy heat sink can be detachably installed at the skylight top of the ABS housing (2).

7. The combined DC power supply equipment according to claim 5, characterized in that: The DC power supply equipment also includes a voltage detection module installed inside the rack housing (1). The voltage detection module includes a fusion motherboard, a step-down module, a detection module, and a signal conversion module. The fusion motherboard is installed inside the rack housing (1) and is used to provide line connections for the step-down module, the detection module, and the signal conversion module, as well as to provide power to the voltage detection module via an external DC power supply. The step-down module is used to reduce the input DC power to 3.3V and provide a stable 3.3V power supply to the detection module. Two sets of 8P voltage detection pin headers are soldered on the motherboard PCB of the fusion motherboard, and the 4P hot-swappable terminals on the motherboard PCB are electrically connected to the two sets of 8P voltage detection pin headers via PCB leads. The detection module includes 16 pins electrically connected to the two sets of 8P voltage detection pin headers. The side wall of the rack housing (1) is equipped with a signal output interface for connecting an external switch, and the signal conversion module is electrically connected to the signal output interface.

8. The combined DC power supply equipment according to claim 1, characterized in that: The frame housing (1) includes a bottom bakelite board (1.1), a front baffle (1.2), left and right side panels (1.3), a rear baffle (1.4), a hollowed-out main board upper panel (1.5), and a hollowed-out integrated cover plate (1.6). The modular motherboard is mounted on the bottom bakelite board (1.1); The hollow motherboard upper panel (1.5) is installed on the bottom bakelite board (1.1) by screws, and the combined motherboard is located between the bottom bakelite board (1.1) and the hollow motherboard upper panel (1.5). The hollow motherboard upper panel (1.5) has multiple terminal plug-in slots (6) through which the 3P hollow 1P hot-swappable terminals and 4P hot-swappable terminals of the combined motherboard can pass. The front panel has multiple DC output slots (3) that are hollowed out. Each DC output slot (3) corresponds to a DC output interface. There are also signal output slots (4) on the front panel for embedding and installing signal output interfaces. The left and right side panels (1.3) have multiple air circulation holes (5); The rear panel (1.4) has a cutout with an AC input slot for embedding and installing an AC input interface with a fuse.

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