Double-channel redundant power supply unit and implementation method

Abstract

The invention discloses a two-way redundant power supply unit and an implementation method. The two-way redundant power supply unit comprises a DC / AC power supply input interface unit, a power supply adapter plate, a power supply control board, a power supply output interface board, two DC / AC power supply conversion modules and a state board. The two power supply conversion modules provide power supply conversion and have the function of mutual redundancy. When one power supply conversion module breaks down, the other power supply conversion module can still supply power to the load continuously, and stable operation and high reliability of the system are ensured. The two-way redundant power supply unit supports the replacement of the power supply conversion module in a power-off mode, and ensures the safety and stability of the system in the replacement process and normal work. The working state of the power supply conversion module is monitored in real time, the functions of fault alarm, state report and automatic switching among the modules are provided, and the flexibility of power supply management and the convenience of maintenance are enhanced. The two-way redundant power supply unit is especially suitable for scenes needing to flexibly cope with various power supply inputs.

Description

Technical Field

[0001] The present invention relates to the technical field of power supplies, and particularly to a dual - path redundant power supply unit and a method for implementing the same. Background Art

[0002] With the continuous improvement of the requirements for power supply reliability in modern electronic devices and communication systems, especially in important scenarios such as data centers and communication base stations, continuous and stable power supply is particularly important. However, in the case of a single - path power supply method, when a power supply failure or unstable input voltage occurs, it may cause the system to power off, resulting in data loss or equipment damage. To avoid this problem, redundant power supply technology has been gradually widely used. Through dual - path or multi - path power supply, backup functions are realized. When one power supply path fails, the other path can quickly take over the power supply to ensure the stability and safety of the system. Most of the existing redundant power supply schemes are designed only for a single power supply environment and are difficult to be compatible with the power input requirements of different voltage levels. For devices that need to support power supply environments of DC 48V and AC 220V, users usually need to purchase power supply units of different specifications additionally, which increases the system cost and maintenance difficulty. In addition, the existing redundant power supply systems have deficiencies in power supply fault detection and real - time data monitoring, unable to provide sufficient data collection and analysis functions, and it is difficult to detect potential problems in a timely manner. Therefore, there is an urgent need to propose a dual - path redundant power supply unit that can be compatible with multiple power supply environments of DC 48V and AC 220V and has functions of power redundancy, fault detection, and real - time data monitoring to solve the above problems. Summary of the Invention

[0003] In view of the existing technical situation and problems, the present invention provides a dual - path redundant power supply unit and a method for implementing the same. The dual - path redundant power supply unit is applicable to occasions that require high reliability and continuous power supply, such as communication devices, data centers, server rooms, etc. It can work in different power supply environments and provide power redundancy protection to ensure that the system can operate stably during power supply failures or power supply switching.

[0004] The technical solution adopted by the present invention is as follows: A dual - path redundant power supply unit includes a DC / AC power input interface unit for accessing a DC48V or AC220V power supply, a power transfer board for providing data and power supply path transfer for the dual - path redundant power supply unit, a power control board for power redundancy control, voltage acquisition, current acquisition, temperature detection, and dual - path connection with the power transfer board, a power output interface board for providing power input and power supply protection for subsequent loads of the dual - path redundant power supply unit, a DC / AC power conversion module I composed of a DC / AC power module interface board I and a DC / AC power converter I, a DC / AC power conversion module II composed of a DC / AC power module interface board II and a DC / AC power converter II, and a status board for status display and switch control of the DC / AC power conversion module I and the DC / AC power conversion module II.

[0005] The DC48V or AC220V power supply is connected to the DC or AC power module interface board I and the DC or AC power module interface board II through the power transfer board. The DC or AC power module interface board I and the DC or AC power module interface board II are respectively connected to the DC or AC power converter I and the DC or AC power converter II. After the DC48V or AC220V is power - converted by the DC or AC power converter I and the DC or AC power converter II, DC13.8V and enable signals SCD1 and SCD2 are connected to the power transfer board through the DC or AC power module interface board I and the DC or AC power module interface board II respectively. The power transfer board provides DC13.8V to the power control board in two paths and is also connected to the status board, transmitting DC13.8V and enable signals SCD1 and SCD2 to the status board. The power control board is connected to the power output interface board, and DC13.8V power output is performed through the power output interface board.

[0006] This dual - path redundant power supply unit provides power supply conversion through two power conversion modules and has the function of mutual redundancy. When one of the power conversion modules fails, the other power conversion module can still continuously supply power to the load, ensuring the stable operation and high reliability of the system. This dual - path redundant power supply unit supports replacing the power conversion module in the power - off mode. Maintenance personnel can select the appropriate power conversion module and power input interface unit according to the actual power supply requirements. Each power conversion module in the power control board is equipped with a voltage and current acquisition circuit and a temperature detection circuit to ensure the safety and stability of the system during use and normal operation. In addition, the system monitors the working status of the power conversion module in real - time through the power control board, providing functions such as fault alarm, status report, and automatic switching between modules, thus enhancing the flexibility of power management and the convenience of maintenance. This dual - path redundant power supply unit is especially suitable for scenarios that need to flexibly handle multiple power inputs, such as data centers, servers, and telecommunication base stations, which have high requirements for high - reliability and adaptable power supply. Its key feature is the ability to flexibly replace the power conversion modules for both DC 48V and AC 220V, with environmental adaptability and maintainability, effectively improving the stability and operation efficiency of the system.

[0007] The present invention has the following remarkable advantages: 1. Strong compatibility: The power supply unit can adapt to two different power supply environments, namely DC 48V and AC 220V. Users only need to replace the corresponding power input interface unit and power conversion module to easily achieve environmental switching, greatly simplifying the design and maintenance of the equipment and being suitable for various application scenarios.

[0008] 2. Redundant design, high reliability: Through the redundant design of the power control board, the system supports dual - path power supply, ensuring that the equipment can still operate normally in the case of a failure of one of the power paths, guaranteeing the stability of the system and the continuous power supply ability, and being especially suitable for critical - task applications with strict power supply requirements.

[0009] 3. Unified structure, modular design: The present invention adopts a unified structural form. The power input interface unit and the power conversion module have the same structural dimensions and interface forms. The modular design makes replacement and maintenance more convenient, effectively improving the expandability and flexibility of the equipment.

[0010] 4. Multiple protections, high safety: The power input interface unit integrates multiple safety protection measures such as over - current protection, short - circuit protection, reverse - connection protection, and surge protection, effectively preventing current surges and other faults during the power supply process and ensuring the safe operation of the power supply unit and subsequent equipment.

[0011] 5. Intelligent Monitoring and Data Acquisition: The power control board can collect data such as voltage, current, and temperature of the power input in real time, and through the data conversion functions of the RT1021 single-chip microcomputer and the PHY chip, report the data to the system control unit through the RJ45 network port, facilitating remote monitoring of the status of the dual-redundant power supply unit and real-time fault diagnosis.

[0012] 6. Convenient Status Display and Control: The status board displays the operating status of the dual-power conversion module through power status indicator lights and provides a power enable switch interface, enabling users to intuitively understand the device status and quickly enable or disable the power conversion module, enhancing the operation convenience and user experience of the device.

[0013] 7. Quick Plug and Unplug, Easy Maintenance: The interface design of the power input interface unit and the power conversion module supports quick plug and unplug, facilitating the quick installation, replacement, and maintenance of the device, reducing downtime and maintenance costs, and improving the maintainability of the system.

[0014] 8. Wide Application Range: The present invention is applicable to fields with high requirements for power supply reliability and stability, such as communication equipment, data centers, and industrial control systems, providing a stable, flexible, and easy-to-maintain power supply solution with broad market application prospects.

[0015] The present invention not only improves the reliability and security of the system but also significantly enhances the user experience through modular design, intelligent monitoring, and simplified operation, possessing remarkable technical advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the block diagram of the dual-redundant power supply unit architecture of the present invention; Figure 2 is the block diagram of the DC dual-redundant power supply unit architecture of the present invention; Figure 3 is the block diagram of the AC dual-redundant power supply unit architecture of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0017] The present invention will be further described below in conjunction with the drawings and embodiments.

[0018] As Figure 1As shown in the figure, a dual-channel redundant power supply unit includes a DC / AC power input interface unit for accessing a DC 48V or AC 220V power supply, a power transfer board for providing data and power supply path transfer for the dual-channel redundant power supply unit, a power control board for power redundancy control, voltage acquisition, current acquisition, temperature detection, and dual-channel connection with the power transfer board, a power output interface board for providing power input and power supply protection for subsequent loads of the dual-channel redundant power supply unit, a DC / AC power conversion module I composed of a DC / AC power module interface board I and a DC / AC power converter I, a DC / AC power conversion module II composed of a DC / AC power module interface board II and a DC / AC power converter II, and a status board for status display and switch control of the DC / AC power conversion module I and the DC / AC power conversion module II.

[0019] The DC 48V or AC 220V power supply is connected to the DC or AC power module interface board I and the DC or AC power module interface board II through the power transfer board. The DC or AC power module interface board I and the DC or AC power module interface board II are respectively connected to the DC or AC power converter I and the DC or AC power converter II. After the DC 48V or AC 220V is converted by the DC or AC power converter I and the DC or AC power converter II, the DC 13.8V and the enable signals SCD1 and SCD2 are connected to the power transfer board through the DC or AC power module interface board I and the DC or AC power module interface board II respectively. The power transfer board provides the DC 13.8V to the power control board in two paths and is also connected to the status board, transmitting the DC 13.8V and the enable signals SCD1 and SCD2 to the status board. The power control board is connected to the power output interface board, and the DC 13.8V power is output through the power output interface board.

[0020] As Figure 2 shown in the figure, the DC 48V power supply accesses the DC power input interface unit through the power input interface. The DC power input interface unit contains a connected DC air switch, reverse connection protection, and surge protection module. The DC air switch is used for arc extinguishing and power supply short-circuit protection, and the reverse connection protection and surge protection module are used for preventing reverse power supply connection and surge input protection; the DC power input interface unit is plugged into the power input interface provided on the power transfer board through the power output interface, and the DC 48V is input to the power transfer board.

[0021] The power transfer board is also provided with a power supply interface for the DC power conversion module I, a power output interface for the DC power conversion module I, an enable interface for the DC power conversion module I, an enable interface for the DC power conversion module II, a power output interface for the DC power conversion module II, and a power supply interface for the DC power conversion module II; the power supply interface for the DC power conversion module I, the power output interface for the DC power conversion module I, and the enable interface for the DC power conversion module I are respectively plugged into the power input interface, the power output interface, and the enable interface provided on the DC power module interface board I; the enable interface for the DC power conversion module II, the power output interface for the DC power conversion module II, and the power supply interface for the DC power conversion module II are respectively plugged into the enable interface, the power output interface, and the power input interface provided on the DC power module interface board II.

[0022] The power transfer board is also provided with a power supply and enable interface for the status board, which are respectively connected to the enable interface of the DC power conversion module I and the enable interface of the DC power conversion module II; at the same time, it is connected to the enable and power interfaces provided on the status board through a cable.

[0023] The power transfer board is also provided with a power supply interface I for the power control board and a power supply interface II for the power control board. The power supply interface I for the power control board and the power supply interface II for the power control board are respectively plugged into the power input interface I and the power input interface II provided on the power control board, for inputting the DC 13.8V dual redundant power supply into the power control board.

[0024] The DC power module interface board I is also provided with a power supply interface for the DC power converter I, a power input interface for the DC power converter I, and a function interface for the DC power converter I, and they are respectively connected to the power input interface, the power output interface, and the function interface provided on the DC power converter I; the DC power module interface board II is also provided with a function interface for the DC power converter II, a power input interface for the DC power converter II, and a power supply interface for the DC power converter II, and they are respectively connected to the function interface, the power output interface, and the power input interface provided on the DC power converter II.

[0025] As Figure 3 shown, the AC220V power supply is connected to the AC power input interface unit through the power input interface. The AC power input interface unit contains a connected AC fuse and an AC switch. The AC fuse is used for overcurrent protection of the AC220V power supply input, and the AC switch is used for switching control of the AC220V power supply input; the AC power input interface unit is plugged into the power input interface provided on the power transfer board through the power output interface.

[0026] The power transfer board is also provided with a power supply interface for the AC power conversion module I, a power output interface for the AC power conversion module I, an enable interface for the AC power conversion module I, an enable interface for the AC power conversion module II, a power output interface for the AC power conversion module II, and a power supply interface for the AC power conversion module II; the power supply interface for the AC power conversion module I, the power output interface for the AC power conversion module I, and the enable interface for the AC power conversion module I are respectively plugged into the power input interface, the power output interface, and the enable interface provided on the AC power module interface board I; the enable interface for the AC power conversion module II, the power output interface for the AC power conversion module II, and the power supply interface for the AC power conversion module II are respectively plugged into the enable interface, the power output interface, and the power input interface provided on the AC power module interface board II.

[0027] The power transfer board is also provided with a power supply and enable interface for the status board, which are respectively connected to the enable interface of the AC power conversion module I and the enable interface of the AC power conversion module II; at the same time, it is connected to the enable and power interfaces provided on the status board through a cable.

[0028] The power transfer board is also provided with a power supply interface I for the power control board and a power supply interface II for the power control board. The power supply interface I for the power control board and the power supply interface II for the power control board are respectively plugged into the power input interface I and the power input interface II provided on the power control board, for inputting the DC 13.8V dual redundant power supply into the power control board.

[0029] The AC power module interface board I is also provided with a power supply interface for the AC power converter I, a power input interface for the AC power converter I, and a function interface for the AC power converter I, which are respectively connected to the power input interface, the power output interface, and the function interface provided on the AC power converter I; the AC power module interface board II is also provided with a function interface for the AC power converter II, a power input interface for the AC power converter II, and a power supply interface for the AC power converter II, which are respectively connected to the function interface, the power output interface, and the power input interface provided on the AC power converter II.

[0030] As Figure 2 or Figure 3 shown, the status board is provided with an enable and power interface, an indicator interface circuit, a power enable switch, and a power status indicator; the enable and power interface is connected to the power enable switch and connected to the power status indicator through the indicator interface circuit; the enable and power interface is connected to the power supply and enable interface provided on the power transfer board.

[0031] The power control board is also provided with a USB port, a network port, a maintenance interface and an operation indicator light; the power control board is also provided with a power conversion circuit, a power redundancy circuit, a voltage / current acquisition circuit I, a voltage / current acquisition circuit II, an RT1021 single-chip microcomputer, a clock circuit, a temperature detection circuit, an EEPROM, an SPI FLASH, a PHY chip, a data conversion chip and an indicator light circuit; among them, the RT1021 single-chip microcomputer is respectively connected to the clock circuit, the temperature detection circuit, the power conversion circuit, the EEPROM and the SPI FLASH; the RT1021 single-chip microcomputer is connected to the USB port, connected to the network port through the PHY chip, converts UART data into RS232 data through the data conversion chip and is connected to the maintenance interface simultaneously with the BOOT data of the RT1021 single-chip microcomputer, and is connected to the operation indicator light through the indicator light circuit.

[0032] The power control board is also provided with a power supply interface board power supply interface, and the power control board is connected to the power input interface cable provided on the power output interface board through the power supply interface board power supply interface.

[0033] The power conversion circuit is used to convert the DC 13.8V power input into DC 5V and DC 3.3V to provide power supply input for the circuits in the power control board; the power redundancy circuit is used to input redundant DC 13.8V power from the power input interface I and the power input interface II into the power control board; the voltage / current acquisition circuit I and the voltage / current acquisition circuit II are used to collect the voltage and current data of the power supply of the dual-channel power input, and provide the converted data to the RT1021 single-chip microcomputer; the RT1021 single-chip microcomputer is used for the overall control, data conversion and transmission of the power control board; the temperature detection circuit is used to monitor the working temperature inside the dual-channel redundant power supply unit; the clock circuit provides a real-time working clock for the RT1021 single-chip microcomputer; the EEPROM transmits real-time data through the I2C data format, and the SPI FLASH transmits stored data through the SPI data format.

[0034] The power output interface board is provided with twelve power output interfaces, and the twelve power output interfaces are respectively connected to the power input interface of the power output interface board through twelve DC fuses.

[0035] The implementation method of the dual-channel redundant power supply unit is: encapsulate the power control board, the power transfer board, the power output interface board and the status board inside the dual-channel redundant power supply unit, connect the power control board and the power output interface board, the power transfer board and the status board in the form of cables, and connect the power transfer board and the power control board through a socket; the DC / AC input interface unit, the DC / AC power conversion module I and the DC / AC power conversion module II are respectively encapsulated separately, connected to the power transfer board through a socket, and fastened with screws.

[0036] Such asFigure 2 As shown in the figure, when the power supply condition is DC48V, select the DC power input interface unit, DC power conversion module I, and DC power conversion module II; the DC power converters I and II are used to convert DC48V into DC13.8V; the DC power module interface boards I and II are used for input and output of the power supplied to the DC power converters I and II, realizing quick plugging and unplugging and enabling control of the DC power converters I and II.

[0037] As Figure 3 As shown in the figure, when the power supply condition is AC220V, select the AC power input interface unit, AC power conversion module I, and AC power conversion module II; the AC power converters I and II are used to convert the alternating current of 220V into direct current of 13.8V; the AC power module interface boards I and II are used for input and output of the power supplied to the AC power converters I and II, realizing quick plugging and unplugging and enabling control of the AC power converters I and II.

[0038] The DC power input interface unit is used for the power supply condition of DC48V between railway platform equipment rooms. The overall structure adopts an anti-reverse connection design to prevent safety problems caused by incorrect operations of users. The power input interface is used for the power input of DC48V, providing a power input path for the subsequent internal power supply of the equipment. It adopts a double-terminal mode, which is convenient for the equipment power supply end to use terminal connection. The DC air switch is used to eliminate the arc generated at the moment of DC power-on, providing further protection for the internal power supply of the equipment. The anti-reverse connection protection and anti-surge module adopts an integrated module, which is convenient for the maintenance and replacement of the equipment, and is used to prevent the internal damage of the power supply unit caused by incorrect operations of the user or excessive surge current at the front stage of the power supply, further ensuring the safety of the power supply. The power output interface adopts a quickly pluggable socket, realizing the direct replacement of the power input interface unit without disassembling the equipment.

[0039] The AC power input interface unit is used for the power supply condition of AC220V between railway platform equipment rooms. The overall structure adopts an anti-reverse connection design to prevent safety problems caused by incorrect operations of users. It includes a power input interface, an AC fuse, an AC switch, and a power output interface. The power input interface, AC fuse, and AC switch adopt an integrated AC switch, which is convenient for the miniaturization of the power input interface unit and further reduces the usage requirements of the equipment. The model and function of the power output interface are the same as those of the DC power input interface unit.

[0040] The power control board is used to implement the redundant function of the power supply, collect the voltage and current data of each of the two-way power supplies, provide a stable DC 13.8V for the power output interface board, and report the data of various parameter indicators inside the two-way redundant power supply unit. The power output interface board is used to provide a DC 13.8V power supply interface for each level of unit inside the station platform equipment, and provide a second level of power protection for the power supply of the two-way redundant power supply unit, avoiding affecting the power supply stability of the overall equipment due to short circuits of the subsequent loads or other emergencies.

[0041] The RT1021 single-chip microcomputer converts UART data into RS232 data through a data conversion chip and forms a maintenance interface for the power control board with the BOOT pin of the RT1021 single-chip microcomputer. The RT1021 single-chip microcomputer converts RMII data into RJ45 data through a PHY chip and connects to the network port. The RT1021 single-chip microcomputer is directly connected to the USB interface. The RT1021 single-chip microcomputer is connected to the SPI FLASH through SPI data. The RT1021 single-chip microcomputer is connected to the EEPROM through I2C data. The RT1021 single-chip microcomputer is connected to the clock circuit through I2C data.

[0042] The power redundancy circuit uses an ideal diode to control an NMOS switch tube to achieve dual-path redundant power supply. The voltage / current acquisition circuit 1 and the voltage / current acquisition circuit 2 use Hall current sensors and voltage-dividing resistor circuits to collect voltage and current. The power conversion circuit uses a buck chip to convert DC 13.8V into DC 5V and DC 3.3V to meet the power supply requirements of various chips inside the control board. The temperature detection circuit uses a temperature acquisition chip to transmit the temperature information inside the two-way redundant power supply unit to the RT1021 single-chip microcomputer in the I2C data format. When the temperature of the two-way redundant power supply unit is lower than -25°C or higher than 55°C, the power control board sends a temperature alarm message through the network port.

[0043] The status board is used to control the power conversion function of the power conversion module and display the status of the power conversion module. In the status board, the enable and power interface model is B07B-XASK-1. The power enable switch model is RK2-01.

[0044] The power conversion module includes a DC power conversion module and an AC power conversion module respectively. The DC power conversion module is used for the power supply condition between railway platform equipment rooms with a DC 48V power supply. It converts DC 48V into DC 13.8V to supply power to other functional units inside the equipment. The DC power converter supports a wide range of power inputs from DC 19V to DC 72V, further reducing the usage conditions of the dual-channel redundant power supply unit. It has protection functions such as over-load, over-voltage, and over-temperature, further ensuring power supply safety, and provides a functional interface for remote control of its switch. The overall structure adopts an anti-reverse connection design to prevent safety problems caused by incorrect operations of users.

[0045] The power input interfaces and power output interfaces of the DC power module interface board Ⅰ and the DC power module interface board Ⅱ use the same model and type of power supply sockets, enabling the quick plugging and unplugging of the DC power conversion module Ⅰ and the DC power conversion module Ⅱ, and providing a power input and output path from the DC power converter to the power transfer board. In the two power conversion modules Ⅰ and Ⅱ, the power supply interfaces of the DC power converter Ⅰ on the DC power module interface board Ⅰ and the power supply interfaces of the DC power converter Ⅱ on the DC power module interface board Ⅱ use the same model sockets, and the power input interfaces of the DC power converter Ⅰ on the DC power module interface board Ⅰ and the power input interfaces of the DC power converter Ⅱ on the DC power module interface board Ⅱ use the same model sockets, providing a power input and output path from the DC power converter Ⅰ to the DC power module interface board Ⅰ and from the DC power converter Ⅱ to the DC power module interface board Ⅱ. In the power conversion modules Ⅰ and Ⅱ, the functional interfaces of the DC power converter Ⅰ on the DC power module interface board Ⅰ and the functional interfaces of the DC power converter Ⅱ on the DC power module interface board Ⅱ adopt the form of cables and sockets to connect the enable signals SCD1 and SCD2 of the DC power conversion module Ⅰ and the DC power conversion module Ⅱ to the DC power module interface board Ⅰ and the DC power module interface board Ⅱ respectively. Through the enable interfaces of the DC power module interface board Ⅰ and the DC power module interface board Ⅱ, they are respectively connected to the quick plug sockets corresponding to the enable interface of the DC power conversion module Ⅰ on the power transfer board and the enable interface of the DC power conversion module Ⅱ on the power transfer board, realizing the switch control of the DC power converter Ⅰ and the DC power converter Ⅱ, as well as the quick plugging and unplugging between the DC power conversion module Ⅰ and the DC power conversion module Ⅱ and the power transfer board.

[0046] The AC power conversion module is used for power supply in the equipment room of the railway platform under the AC 220V power supply condition. It converts AC 220V into DC 13.8V to supply power to other functional units inside the equipment, including the AC power converter and the AC power module interface board. The AC power converter supports a wide range of power inputs from AC 90V to AC 264V, further reducing the usage conditions of the dual redundant power supply unit. The other functions are the same as those of the DC power conversion module.

[0047] The power input interface of the power transfer board uses a quick plug socket corresponding to the power output interface of the power input interface unit to achieve quick plugging and unplugging and provide a power supply path. The power supply interface of the power conversion module uses a quick plug socket corresponding to the power conversion module power supply interface of the power transfer board to achieve quick plugging and unplugging of the dual redundant power supply unit and provide a power supply path. The power output interface of the power conversion module uses a quick plug socket corresponding to the power conversion module power output interface of the power transfer board to achieve quick plugging and unplugging of the power conversion module and provide a power supply path.

[0048] The enable interfaces of the DC power conversion module I, DC power conversion module II, AC power conversion module I, and AC power conversion module II all use quick plug sockets corresponding to the enable interfaces of the DC power module interface board I, DC power module interface board II, AC power module interface board I, and AC power module interface board II to achieve quick plugging and unplugging and switch control of the DC power conversion module I, DC power conversion module II, AC power conversion module I, and AC power conversion module II.

[0049] The power supply and enable interface on the power transfer board is connected to the enable and power interfaces on the status board using a socket and a cable to achieve switch control of the DC power converter I, DC power converter II, AC power converter I, and AC power converter II. The power supply interface of the power interface board is connected to the power input interface of the power output interface board using a cable and a socket to provide power supply to the power output interface board.

[0050] The model selection of the dual redundant power supply unit is as follows: In the DC power input interface unit, the power input interface model is DZ47H-80A. The DC air switch model is DZ47sZ-2P. The reverse connection protection and surge protection module model is VUO82-16NO7. The power output interface model is 9001-52151TA.

[0051] In the power transfer board, the models of the power input interface, the power supply interface of power conversion module I, the power output interface of power conversion module I, the power supply interface of power conversion module II, and the power output interface of power conversion module II are all 9001-51151TA.

[0052] In the power transfer board, the enable interfaces of Power Conversion Module I and Power Conversion Module II are of model 9001-36101C00A (straight female). The power supply and enable interface of the status board is of model B07B-XASK-1.

[0053] In the DC power conversion module, the power input interface and the power output interface are of model 9001-52151TA. The enable interface is of model 9001-35101C00A (bent male). The function interface of the power converter is of model B04B-XASK-1. The power input interface of the power converter is VLP-10V. The power supply interface of the power converter is VLP-06V. The model of the power converter is SD-1000L-12.

[0054] In the power control board, the Power Input Interface I and the Power Input Interface II are of model 9001-52151TA. The power redundancy circuit uses the chip LM5050-2. Both the Voltage / Current Acquisition Circuit 1 and the Voltage / Current Acquisition Circuit 2 use the chips ACS758 / ACS770-100. The temperature detection circuit uses the chip LM75BIM. The power supply interface of the power interface board is VLP-10V.

[0055] In the power output interface board, the power input interface is VLP-10V. The model of the DC fuse is 0297015.WXNV. The model of the DC fuse holder is 178.6764.0001. The power output interface is AL16-4A.

[0056] In the AC power input interface unit, the power input interface, the AC fuse and the AC switch are integrated into one unit, with the model AC-14-16A. In the AC Power Conversion Module I and the AC Power Conversion Module II, the models of the AC Power Converter I and the AC Power Converter II are both MSP-1000-12.

Claims

1. A dual redundant power supply unit, characterized in that: It includes a DC / AC power input interface unit for connecting to a DC48V or AC220V power supply, a power adapter board for providing data and power supply path transfer for a dual-channel redundant power supply unit, a power control board for power redundancy control, voltage acquisition, current acquisition, temperature detection, and dual-channel connection with the power adapter board, a power output interface board for providing power input and power supply protection for subsequent loads of the dual-channel redundant power supply unit, a DC / AC power conversion module I composed of a DC / AC power module interface board I and a DC / AC power converter I, a DC / AC power conversion module II composed of a DC / AC power module interface board II and a DC / AC power converter II, and a status board for status display and switch control of the DC / AC power conversion module I and the DC / AC power conversion module II; The DC48V or AC220V power supply is connected to the DC or AC power module interface board Ⅰ and the DC or AC power module interface board Ⅱ through the power adapter board. The DC or AC power module interface board Ⅰ and the DC or AC power module interface board Ⅱ are respectively connected to the DC or AC power converter Ⅰ and the DC or AC power converter Ⅱ. After the DC48V or AC220V is converted by the DC or AC power converter Ⅰ and the DC or AC power converter Ⅱ, the DC13.8V and the enable signals SCD1 and SCD2 are respectively connected to the power adapter board through the DC or AC power module interface board Ⅰ and the DC or AC power module interface board Ⅱ. The power adapter board provides DC13.8V to the power control board in two ways, and is connected to the status board at the same time, and transmits DC13.8V and the enable signals SCD1 and SCD2 to the status board. The power control board is connected to the power output interface board, and the DC13.8V power is output through the power output interface board.

2. A dual redundant power supply unit according to claim 1, characterized in that: The DC48V power supply is connected to the DC power input interface unit through the power input interface. The DC power input interface unit contains a connected DC circuit breaker and a reverse connection protection and surge protection module. The DC circuit breaker is used to eliminate arcs and provide power supply short circuit protection. The reverse connection protection and surge protection module is used to prevent reverse power supply and surge input protection. The DC power input interface unit is plugged into the power input interface provided on the power adapter board through the power output interface to input DC48V into the power adapter board. The power adapter board is also provided with a DC power conversion module I power supply interface, a DC power conversion module I power output interface, a DC power conversion module I enable interface, a DC power conversion module II enable interface, a DC power conversion module II power output interface, and a DC power conversion module II power supply interface; The DC power conversion module I power supply interface, the DC power conversion module I power output interface, and the DC power conversion module I enable interface are respectively plugged into the power input interface, the power output interface, and the enable interface provided on the DC power module interface board I; the DC power conversion module II enable interface, the DC power conversion module II power output interface, and the DC power conversion module II power supply interface are respectively plugged into the enable interface, the power output interface, and the power input interface provided on the DC power module interface board II; The power adapter board is also provided with a state board power supply and enable interface, which are respectively connected to the DC power conversion module I enable interface and the DC power conversion module II enable interface; and at the same time, connected to the enable and power interface provided on the state board through a cable; The power adapter board is also provided with a power control board power supply interface I and a power control board power supply interface II. The power control board power supply interface I and the power control board power supply interface II are respectively plugged into the power input interface I and the power input interface II provided on the power control board, and are used to input a DC 13.8V dual-channel redundant power supply into the power control board.

3. A dual redundant power supply unit according to claim 1, characterized in that: The AC220V power supply is connected to the AC power input interface unit through the power input interface. The AC power input interface unit contains an AC fuse and an AC switch connected to each other. The AC fuse is used for overcurrent protection of the AC220V power input, and the AC switch is used to control the switch control of the AC220V power input. The AC power input interface unit is plugged into the power input interface provided on the power adapter board through the power output interface. The power adapter board is also provided with an AC power conversion module I power supply interface, an AC power conversion module I power output interface, an AC power conversion module I enable interface, an AC power conversion module II enable interface, an AC power conversion module II power output interface, and an AC power conversion module II power supply interface; The AC power conversion module I power supply interface, the AC power conversion module I power output interface, and the AC power conversion module I enable interface are respectively plugged into the power input interface, the power output interface, and the enable interface provided on the AC power module interface board I; the AC power conversion module II enable interface, the AC power module interface board II power output interface, and the AC power module interface board II power supply interface are respectively plugged into the enable interface, the power output interface, and the power input interface provided on the AC power module interface board II; The power adapter board is also provided with a state board power supply and enable interface, which are respectively connected to the AC power conversion module I enable interface and the AC power conversion module II enable interface; and at the same time, connected to the enable and power interface provided on the state board through a cable; The power adapter board is also provided with a power control board power supply interface I and a power control board power supply interface II. The power control board power supply interface I and the power control board power supply interface II are respectively plugged into the power input interface I and the power input interface II provided on the power control board, and are used to input a DC 13.8V dual-channel redundant power supply into the power control board.

4. A dual redundant power supply unit according to claim 2, characterized in that: The DC power module interface board I is also provided with a DC power converter I power supply interface, a DC power converter I power input interface, and a DC power converter I functional interface, which are respectively connected to the power input interface, power output interface, and functional interface of the DC power converter I; the DC power module interface board II is also provided with a DC power converter II functional interface, a DC power converter II power input interface, and a DC power converter II power supply interface, and are respectively connected to the functional interface, power output interface, and power input interface of the DC power converter II.

5. A dual redundant power supply unit according to claim 3, characterized in that: The AC power module interface board I is also provided with an AC power converter I power supply interface, an AC power converter I power input interface, and an AC power converter I functional interface, which are respectively connected to the power input interface, power output interface, and functional interface of the AC power converter I; the AC power module interface board II is also provided with an AC power converter II functional interface, an AC power converter II power input interface, and an AC power converter II power supply interface, which are respectively connected to the functional interface, power output interface, and power input interface of the AC power converter II.

6. A dual redundant power supply unit according to any one of claims 1 to 5, characterized in that: The status board is provided with an enable and power interface, an indicator light interface circuit, a power enable switch, and a power status indicator light; the enable and power interface is connected to the power enable switch, and is connected to the power status indicator light through the indicator light interface circuit; the enable and power interface is connected to the status board power supply and enable interface provided on the power adapter board.

7. A dual redundant power supply unit according to claim 6, characterized in that: The power control board is also provided with a USB port, a network port, a maintenance interface and an operation indicator light; the power control board is also provided with a power conversion circuit, a power redundancy circuit, a voltage / current acquisition circuit 1, a voltage / current acquisition circuit 2, an RT1021 single-chip microcomputer, a clock circuit, a temperature detection circuit, an EEPROM, an SPI FLASH, a PHY chip, a data conversion chip, and an indicator light circuit; wherein the RT1021 single-chip microcomputer is respectively connected to the clock circuit, the temperature detection circuit, the power conversion circuit, the EEPROM, and the SPI FLASH; the RT1021 single-chip microcomputer is connected to the USB port, connected to the network port through the PHY chip, converts the UART data into RS232 data through the data conversion chip and connects to the maintenance interface at the same time with the BOOT data of the RT1021 single-chip microcomputer, and connects to the operation indicator light through the indicator light circuit; The power control board is also provided with a power supply interface of the power interface board, and the power control board is connected to the power input interface provided on the power output interface board through a cable via the power supply interface of the power interface board; The power conversion circuit is used to convert the DC 13.8V power input into DC 5V and DC 3.3V to provide power input for the circuit in the power control board; the power redundancy circuit is used to provide redundant DC13.8V power input to the power control board through the power input interface I and the power input interface II; the voltage / current acquisition circuit 1 and the voltage / current acquisition circuit 2 are used to collect the voltage and current data of the power supply of the dual-channel power input, and provide the converted data to the RT1021 microcontroller; the RT1021 microcontroller is used for the overall control and data conversion and transmission of the power control board; the temperature detection circuit is used to monitor the working temperature inside the dual-channel redundant power supply unit; the clock circuit provides a real-time working clock for the RT1021 microcontroller; the EEPROM transmits real-time data in the I2C data format, and the SPI FLASH transmits storage data in the SPI data format.

8. A dual redundant power supply unit according to claim 7, characterized in that: The power output interface board is provided with twelve power output interfaces, and the twelve power output interfaces are respectively connected to the power input interface of the power output interface board through twelve DC fuses.

9. A method for implementing a dual redundant power supply unit as claimed in claim 1, characterized in that: The power control board, power adapter board, power output interface board and status board are encapsulated inside the dual redundant power supply unit, the power control board and the power output interface board, the power adapter board and the status board are connected in the form of cables, and the power adapter board and the power control board are connected through a socket; the DC / AC power input interface unit, the DC / AC power conversion module I and the DC / AC power conversion module II are separately encapsulated, connected to the power adapter board through a socket, and fastened with screws; When the power supply condition is DC48V, select the DC power input interface unit, DC power conversion module I, and DC power conversion module II; the DC power converter I and DC power converter II are used to convert DC48V to DC13.8V; the DC power module interface board I and DC power module interface board II are used to input and output the power provided by the DC power converter I and DC power converter II, realize fast plug-in and enable control of the DC power converter I and DC power converter II; When the power supply condition is AC220V, select AC power input interface unit, AC power conversion module I, AC power conversion module II; among which AC power converter I and AC power converter II are used to convert AC 220V into DC 13.8V; The AC power module interface board I and the AC power module interface board II are used to input and output the power provided by the AC power converter I and the AC power converter II, realize quick plug and unplug and enable control of the AC power converter I and the AC power converter II.

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