Dual-redundancy modular power supply switching device and intelligent hot plug method thereof

Abstract

The invention discloses a dual-redundancy modular power supply switching device and an intelligent hot plug method thereof, and relates to the technical field of intelligent power distribution control, and the dual-redundancy modular power supply switching device comprises a first input module, a second input module, an output module, a communication bus, a bus backboard, a power supply input interface and a power supply output interface; the first input module and the second input module are respectively connected with two paths of external alternating current through independent power supply input interfaces; the output module is connected to a load end through a power supply output interface and comprises a solid-state switch element and a reverse current protection unit; the bus backboard is a dual-redundancy modularized power supply switching device connecting substrate and is integrated with a power supply bus used for transmitting electric energy and a communication bus used for transmitting data. Based on self-adaptive power management of voltage stability, harmonic distortion rate and load requirements, the main and standby power supply relation can be automatically evaluated and reconstructed after a new module is connected, so that the system always operates in an optimal power supply path, and the power supply continuity and the electric energy utilization efficiency are improved.

Description

Technical Field

[0001] This invention relates to the field of intelligent power distribution control technology, and in particular to a dual-redundant modular power switching device and its intelligent hot-swap method. Background Technology

[0002] With the increasing demands for power continuity from data centers, industrial automation, and critical infrastructure, dual-power switching devices, as a crucial component ensuring uninterrupted system operation, have evolved from traditional mechanical transfer switches into intelligent devices integrating microcontrollers and communication interfaces. Current mainstream solutions employ an integrated structure, combining input detection, switching logic, and output control functions within a single chassis. Automatic switching between primary and backup power supplies is achieved via relays or solid-state switches, and remote monitoring is supported through RS-485 or CAN bus.

[0003] Existing technologies still have room for improvement in terms of system maintainability and scalability. Due to the high integration of functional modules, when a unit fails, the entire machine usually needs to be powered off for repair, making online maintenance difficult. Furthermore, the number of input / output channels is fixed, making it impossible to flexibly increase or decrease the configuration according to load requirements. Especially during module replacement, the lack of effective control over electrical connection timing and communication synchronization can easily lead to transient interference or system malfunctions. Summary of the Invention

[0004] In view of the aforementioned existing problems, the present invention is proposed.

[0005] Therefore, the present invention provides a dual-redundant modular power switching device and its intelligent hot-swap method, which solves the problems of inability to maintain online, poor scalability, and loss of electrical and communication timing control during hot-swap caused by the high integration of modules in the prior art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: In a first aspect, the present invention provides a dual-redundant modular power switching device, which includes a first input module, a second input module, an output module, a communication bus, a bus backplane, a power input interface, and a power output interface. The first input module and the second input module are respectively connected to two external AC circuits through independent power input interfaces; The output module is connected to the load end through a power output interface and includes solid-state switching elements and a reverse current protection unit. The bus backplane is a dual-redundant modular power switching device connecting base plate, which integrates a power bus for transmitting electrical energy and a communication bus for transmitting data. The power bus includes a first input bus and a second input bus, which are respectively connected to the output terminals of the first input module and the second input module. The first input module and the second input module periodically exchange heartbeat signals through a communication bus. The first input module and the second input module broadcast the current power supply status, load capacity and switching events to the output module through the communication bus. The bus backplane is equipped with a blind-plug interface structure to prevent mis-plugging. The blind-plug interface structure includes a mechanical guide slot, a magnetic polarity identification component, and a pin sequence designed for time-division power-on.

[0007] As a preferred embodiment of the dual-redundant modular power switching device of the present invention, the first input module and the second input module both integrate a voltage / frequency detection circuit and a soft-start circuit. The voltage / frequency detection circuit is used to collect the voltage amplitude, frequency fluctuation rate and harmonic distortion rate of the input power supply in real time. The soft-start circuit prevents current surges to the power bus when the module is inserted by using a current-limiting resistor and MOSFET soft-start control.

[0008] As a preferred embodiment of the dual-redundant modular power switching device of the present invention, the first input module and the second input module each have a built-in bypass relay and a dynamic priority calculation unit. The dynamic priority calculation unit generates a power weight value based on the collected voltage stability, harmonic distortion rate and current load demand, and automatically determines the primary or backup power supply status according to the weight value. When the primary input is abnormal, the corresponding bypass relay is activated to achieve seamless switching of the backup power supply.

[0009] As a preferred embodiment of the dual-redundant modular power switching device of the present invention, the communication bus adopts an optically isolated CAN FD bus, which supports high-speed data transmission and anti-electromagnetic interference capability. All input modules and output modules realize status broadcasting, heartbeat packet interaction, switching command issuance and load status feedback through this bus, forming a distributed collaborative control unit.

[0010] As a preferred embodiment of the dual-redundant modular power switching device of the present invention, the output module contains a solid-state switching element and a reverse current protection unit. The solid-state switching element is a MOSFET-based contactless switch, and the reverse current protection unit is a combination of a fast diode and a detection circuit.

[0011] As a preferred embodiment of the dual-redundant modular power switching device of the present invention, the output module supports independent power supply mode, cross power supply mode and peak sharing mode: in peak sharing mode, the output module obtains the available power capacity of the two input power supplies through the communication bus and dynamically allocates the power supply ratio during high load periods.

[0012] As a preferred embodiment of the dual-redundant modular power switching device of the present invention, the bus backplane adopts a modular rail mounting structure, the first input module, the second input module, and the output module slide in along the rail and are locked to the backplane interface; the front panel of the first input module, the second input module, and the output module is provided with status indicator lights to display the running, fault, communication, and power status.

[0013] Secondly, as a preferred embodiment of the dual-redundant modular power switching intelligent hot-swap method of the present invention, when either the first input module or the second input module is unplugged, a mechanical micro switch is triggered to control the internal bypass relay to close immediately, switching the corresponding input channel to the redundant path and maintaining the continuous power supply of the system. After receiving an offline signal via the communication bus, the control module marks it as in a failed state and disables the relevant control logic. After the new module is inserted into the bus backplane, the communication pins establish a connection first and send an identification code containing the module type, version number and compatibility verification information to the control module. The control module compares the configuration file pre-stored in the cloud to verify module compatibility before starting the soft-start circuit.

[0014] As a preferred embodiment of the dual-redundant modular power switching intelligent hot-swap method of the present invention, in the process of inserting a new module, the magnetic polarity identification component first performs physical polarity verification. If the polarity is incorrect, subsequent power-on operations are prohibited. The pin sequence of the time-sharing power-on design ensures that the communication pins contact the power pins first, and performs a safe access sequence of communication first and power supply later.

[0015] As a preferred embodiment of the dual-redundant modular power supply switching intelligent hot-swap method of the present invention, the control module automatically incorporates the new module into the priority strategy calculation of the dual-input power supply after the new module is connected, and re-evaluates the primary and backup relationship according to the quality parameters of the power supply connected to the new module, and performs adaptive power management.

[0016] The beneficial effects of this invention are as follows: By setting up a dual-input module and a blind-plug interface structure on the bus backplane to prevent mis-plugging, combined with the pin sequence and magnetic polarity identification component of the time-sharing power-on design, safe and reliable access of the module in the energized state is achieved, avoiding the risk of arcing, short circuits or communication interruption caused by improper insertion and removal sequence, and ensuring the electrical safety and signal integrity of the system during hot-plugging; Furthermore, through the dynamic priority calculation unit and communication bus broadcast mechanism built into the input module, adaptive power management based on voltage stability, harmonic distortion rate and load demand is achieved. After a new module is connected, the main and backup power supply relationship can be automatically evaluated and reconstructed, so that the system always operates in the optimal power supply path, improving power supply continuity and energy utilization efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of a redundant modular power switching device.

[0019] Figure 2 This is the circuit schematic for the input module.

[0020] Figure 3 The flowchart shows the state synchronization process for the first input module, the second input module, and the output module.

[0021] Figure 4 Schematic diagram of the internal structure and working mode of the output module In the diagram, 1 is the first input module, 2 is the second input module, 3 is the output module, 4 is the communication bus, 5 is the bus backplane, 6 is the power input interface, and 7 is the power output interface. Detailed Implementation

[0022] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0024] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0025] Reference Figures 1-4 As one embodiment of the present invention, this embodiment provides a dual-redundant modular power supply switching intelligent hot-swap method, including the following steps: Both the first input module 1 and the second input module 2 integrate a voltage / frequency detection circuit and a soft-start circuit. The voltage / frequency detection circuit is used to collect the voltage amplitude, frequency fluctuation rate and harmonic distortion rate of the input power supply in real time. The soft-start circuit prevents current surges to the power bus when the module is inserted by using a current-limiting resistor and MOSFET soft-start control.

[0026] Furthermore, by integrating voltage / frequency detection circuits within the first input module 1 and the second input module 2, the voltage amplitude, frequency fluctuation rate, and harmonic distortion rate of the two external AC power supplies are collected in real time, enabling continuous monitoring of the power quality of the input power supply. Simultaneously, a soft-start circuit is configured within the first input module 1 and the second input module 2. This soft-start circuit uses a current-limiting resistor and a MOSFET to form a soft-start control structure. When the first input module 1 or the second input module 2 is inserted into the bus backplane 5, the current path is gradually turned on through the gate drive control of the MOSFET, limiting the surge current at the initial power-on moment and avoiding current impact on the power bus.

[0027] The first input module 1 and the second input module 2 each have built-in bypass relays and dynamic priority calculation units. The dynamic priority calculation unit generates power weight values ​​based on the collected voltage stability, harmonic distortion rate and current load demand, and automatically determines the primary or backup power supply status according to the weight values. When the primary input is abnormal, the corresponding bypass relay will activate to achieve seamless switching of backup power.

[0028] Furthermore, a bypass relay and a dynamic priority calculation unit are set inside the first input module 1 and the second input module 2. The dynamic priority calculation unit generates a power supply weight value according to a preset weight relationship based on the voltage stability, harmonic distortion rate and current load demand collected by the voltage / frequency detection circuit. Based on the weight value, it automatically determines whether the first input module 1 or the second input module 2 is in the main power supply state or the backup power supply state. When the first input module 1 or the second input module 2 in the main power supply state malfunctions, the bypass relay inside it immediately activates and switches the corresponding input channel to another normally operating input power supply, realizing seamless switching of the power supply path.

[0029] The communication bus 4 adopts an optocoupler-isolated CAN FD bus, which supports high-speed data transmission and electromagnetic interference resistance. All input modules and output modules 3 use this bus to realize status broadcasting, heartbeat packet interaction, switching command issuance and load status feedback, forming a distributed collaborative control unit.

[0030] Furthermore, an optocoupler-isolated CAN FD bus is used as the communication bus 4. All first input modules 1, second input modules 2, and output modules 3 are connected to this communication bus 4. The heartbeat signals are periodically exchanged through this communication bus 4 to confirm the operating status of each unit. The first input modules 1 and second input modules 2 broadcast the current power supply status, load capacity, and switching events to the output module 3 through this communication bus 4. The output module 3 feeds back its own load status through this communication bus 4, forming a distributed collaborative control mechanism to ensure information synchronization and coordinated response among the functional units.

[0031] Output module 3 contains a solid-state switching element and a reverse current protection unit. The solid-state switching element is a MOSFET-based contactless switch, and the reverse current protection unit is a combination of a fast diode and a detection circuit.

[0032] Furthermore, solid-state switching elements and reverse current protection units are set inside the output module 3. The solid-state switching elements adopt a contactless switching structure based on MOSFETs to control the on and off operation of the output terminal. The reverse current protection unit is composed of a fast diode and a detection circuit to detect and block the reverse current that may occur in the case of cross power supply or multiple parallel outputs, so as to ensure the electrical safety of the output side.

[0033] Output module 3 supports independent power supply mode, cross power supply mode and peak sharing mode: In peak sharing mode, output module 3 obtains the available power capacity of the two input power supplies through communication bus 4 and dynamically allocates the power supply ratio during high load periods.

[0034] Furthermore, the output module 3 supports independent power supply mode, cross power supply mode, and peak sharing mode. In independent power supply mode, different output channels are independently powered by the first input module 1 or the second input module 2 respectively. In cross power supply mode, the output module 3 can select any input power source as the power source. In peak sharing mode, the output module 3 obtains the available power capacity of the first input module 1 and the second input module 2 through the communication bus 4, and dynamically allocates the power supply ratio of the two input power sources according to the actual needs during high load periods to achieve load balancing.

[0035] The bus backplane 5 adopts a modular guide rail mounting structure. The first input module 1 and the second input module (2) and the output module 3 slide into the guide rail and are locked to the backplane interface. The front panel of the first input module 1, the second input module (2) and the output module 3 is equipped with status indicator lights to display the running, fault, communication and power status.

[0036] Furthermore, the bus backplane 5 adopts a modular guide rail mounting structure. The first input module 1, the second input module 2, and the output module 3 slide in along the guide rail and are connected and locked to the interface on the bus backplane 5 to achieve mechanical fixation and electrical connection. Status indicator lights are set on the front panel of the first input module 1, the second input module 2, and the output module 3. The status indicator lights display the running, fault, communication, and power status respectively, which makes it easy for maintenance personnel to intuitively grasp the working status of each unit.

[0037] When either the first input module 1 or the second input module 2 is pulled out, a mechanical micro switch is triggered, which controls the internal bypass relay to close immediately, switching the corresponding input channel to a redundant path and maintaining continuous power supply to the system.

[0038] Furthermore, the parameters used in the power supply weight value calculation mentioned above include voltage stability, harmonic distortion rate, and load rate. The data comes from the voltage / frequency detection circuit and load current sampling circuit integrated inside the first input module 1 and the second input module 2, and is input to the dynamic priority calculation unit for processing after analog-to-digital conversion.

[0039] After receiving an offline signal via communication bus 4, the control module marks it as in a failed state and disables the relevant control logic.

[0040] Furthermore, when the first input module 1 or the second input module 2 is unplugged, its internal mechanical microswitch is triggered, controlling the bypass relay in the first input module 1 or the second input module 2 to close immediately, switching the corresponding input channel to another normally operating input power supply, maintaining the continuous power supply from the power output interface to the load end; after receiving the offline signal from the first input module 1 or the second input module 2 through the communication bus 4, the control module marks the first input module 1 or the second input module 2 as in a failed state and shields the control logic related to the first input module 1 or the second input module 2 to prevent accidental triggering of the switching action.

[0041] After the new module is inserted into the bus backplane 5, the communication pins establish a connection first and send an identification code containing the module type, version number and compatibility verification information to the control module.

[0042] Furthermore, during the connection process between the newly inserted first input module 1 or the second input module 2 and the bus backplane 5, the magnetic polarity identification component in its interface first performs physical polarity verification. If a polarity error is detected, the subsequent power-on process is prohibited. If the polarity is correct, the pin sequence of the time-sharing power-on design ensures that the communication pins make contact before the power supply pins, thereby achieving timing control of the electrical connection.

[0043] The control module compares the configuration file pre-stored in the cloud to verify module compatibility before starting the soft-start circuit.

[0044] Furthermore, after the communication pin connection is established, the newly inserted first input module 1 or second input module 2 sends an identification code containing module type, version number and compatibility verification information to the control module through the communication bus 4. After receiving the identification code, the control module compares it with the configuration file pre-stored in the cloud to verify the compatibility of the newly inserted first input module 1 or second input module 2 with the current device.

[0045] During the insertion of a new module, the magnetic polarity identification component first performs a physical polarity check. If the polarity is incorrect, subsequent power-on operations are prohibited. The pin sequence of the time-sharing power-on design ensures that the communication pins contact the power pins before the power pins, thus ensuring a safe access sequence of communication first and power supply second.

[0046] Furthermore, after confirming compatibility, the control module activates the soft-start circuit inside the newly inserted first input module 1 or second input module 2, gradually applying the operating voltage through the current-limiting resistor and MOSFET soft-start control to avoid current surges to the power bus and complete safe power-on.

[0047] After the new module is connected, the control module automatically incorporates it into the priority strategy calculation of the dual-input power supply. Based on the quality parameters of the power supply connected to the new module, the primary and backup relationships are reassessed, and adaptive power management is performed.

[0048] Furthermore, after the newly inserted first input module 1 or second input module 2 has been powered on and is running stably, the control module incorporates it into the priority strategy calculation of the dual-input power supply. It uses the real-time effective voltage value, total harmonic distortion rate, and load rate of the currently connected power supply collected by the voltage / frequency detection circuit inside the first input module 1 or second input module 2, and substitutes these values ​​into the comprehensive priority weight value calculation formula: ; in, For the first The overall priority weight value of the power supply. For the first The real-time effective value of the circuit power supply voltage. For the first Total harmonic distortion of the power supply, For the present The load rate of the power supply connected to the circuit. For voltage quality scoring function, For harmonic quality scoring functions, For load adaptability scoring function, As a weight for voltage quality scoring, As the weight for harmonic quality scoring, Weights for load adaptability scoring.

[0049] This embodiment also provides a computer device applicable to the dual-redundant modular power switching intelligent hot-swappable method, comprising: a memory and a processor; the memory is used to store computer-executable instructions, and the processor is used to execute the computer-executable instructions to implement the dual-redundant modular power switching intelligent hot-swappable method as proposed in the above embodiment.

[0050] The computer device can be a terminal, comprising a processor, memory, communication interface, display screen, and input devices connected via a system bus. The processor provides computing and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs stored in the non-volatile storage media. The communication interface is used for wired or wireless communication with external terminals; wireless communication can be achieved through Wi-Fi, carrier networks, NFC (Near Field Communication), or other technologies. The display screen can be an LCD screen or an e-ink screen. The input devices can be a touch layer covering the display screen, buttons, a trackball, or a touchpad on the computer device's casing, or an external keyboard, touchpad, or mouse.

[0051] This embodiment also provides a storage medium storing a computer program that, when executed by a processor, implements the intelligent hot-swappable method for dual-redundant modular power switching as proposed in the above embodiments. The storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as Static Random Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read Only Memory (EPROM), Programmable Red-Only Memory (PROM), Read-Only Memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0052] In summary, this invention achieves safe and reliable module access under energized conditions by setting up a dual-input module and a blind-plug interface structure on the bus backplane, combined with a pin sequence and magnetic polarity identification component for time-sharing power-on design. This avoids the risks of arcing, short circuits, or communication interruptions caused by improper insertion / removal sequence, ensuring the electrical safety and signal integrity of the system during hot-swapping. Furthermore, through the dynamic priority calculation unit built into the input module and the communication bus broadcast mechanism, adaptive power management based on voltage stability, harmonic distortion rate, and load demand is achieved. After a new module is connected, the system can automatically evaluate and reconstruct the primary and backup power supply relationship, ensuring that the system always operates on the optimal power supply path, thus improving power supply continuity and energy utilization efficiency.

[0053] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A dual-redundant modular power switching device, characterized in that: It includes a first input module (1), a second input module (2), an output module (3), a communication bus (4), a bus backplane (5), a power input interface (6), and a power output interface (7). The first input module (1) and the second input module (2) are respectively connected to two external AC circuits through independent power input interfaces (6); The output module (3) is connected to the load end through the power output interface (7), and includes solid-state switching elements and reverse current protection unit; The bus backplane (5) is a dual-redundant modular power switching device connecting base plate, which integrates a power bus for transmitting power and a communication bus (4) for transmitting data. The power bus includes a first input bus and a second input bus, which are respectively connected to the output terminals of the first input module (1) and the second input module (2). The first input module (1) and the second input module (2) periodically exchange heartbeat signals through the communication bus (4). The first input module (1) and the second input module (2) broadcast the current power supply status, load capacity and switching events to the output module (3) through the communication bus (4). The bus backplane (5) is provided with a blind insertion prevention interface structure, which includes a mechanical guide slot, a magnetic polarity identification component, and a pin sequence designed for time-division power-on.

2. The dual-redundant modular power switching device as described in claim 1, characterized in that: The first input module (1) and the second input module (2) both integrate a voltage / frequency detection circuit and a soft-start circuit. The voltage / frequency detection circuit is used to collect the voltage amplitude, frequency fluctuation rate and harmonic distortion rate of the input power supply in real time. The soft-start circuit prevents the power bus from being impacted when the module is inserted by using a current-limiting resistor and MOSFET soft-start control.

3. The dual-redundant modular power switching device as described in claim 2, characterized in that: The first input module (1) and the second input module (2) each have a built-in bypass relay and a dynamic priority calculation unit. The dynamic priority calculation unit generates a power weight value based on the collected voltage stability, harmonic distortion rate and current load demand, and automatically determines the main or standby power supply status according to the weight value. When the primary input fails, the corresponding bypass relay activates, enabling seamless switching to the backup power supply.

4. The dual-redundant modular power switching device as described in claim 3, characterized in that: The communication bus (4) adopts an optically isolated CAN FD bus, which supports high-speed data transmission and anti-electromagnetic interference capability. All input modules and output modules realize status broadcasting, heartbeat packet interaction, switching command issuance and load status feedback through this bus, forming a distributed collaborative control unit.

5. The dual-redundant modular power switching device as described in claim 4, characterized in that: The output module (3) contains a solid-state switching element and a reverse current protection unit. The solid-state switching element is a MOSFET-based contactless switch, and the reverse current protection unit is a combination of a fast diode and a detection circuit.

6. The dual-redundant modular power switching device as described in claim 5, characterized in that: The output module (3) supports independent power supply mode, cross power supply mode and peak sharing mode: In peak sharing mode, the output module obtains the available power capacity of the two input power supplies through the communication bus (4) and dynamically allocates the power supply ratio during high load periods.

7. The dual-redundant modular power switching device as described in claim 1, characterized in that: The bus backplane (5) adopts a modular guide rail mounting structure. The first input module (1), the second input module (2), and the output module (3) slide into the guide rail and are locked to the backplane interface. The front panel of the first input module (1), the second input module (2), and the output module (3) is equipped with status indicator lights to display the running, fault, communication, and power status.

8. A dual-redundant modular power supply switching intelligent hot-swappable method, based on the dual-redundant modular power supply switching device according to any one of claims 1 to 7, characterized in that: When either the first input module (1) or the second input module (2) is pulled out, a mechanical micro switch is triggered, which controls the internal bypass relay to close immediately, switching the corresponding input channel to a redundant path to maintain continuous power supply to the system. After receiving the offline signal through the communication bus (4), the control module marks it as a failure state and disables the relevant control logic; After the new module is inserted into the bus backplane (5), the communication pins establish a connection first and send an identification code containing the module type, version number and compatibility verification information to the control module. The control module compares the configuration file pre-stored in the cloud to verify module compatibility before starting the soft-start circuit.

9. The intelligent hot-swappable method for dual-redundant modular power supply switching as described in claim 8, characterized in that: During the insertion of a new module, the magnetic polarity identification component first performs a physical polarity check. If the polarity is incorrect, subsequent power-on operations are prohibited. The pin sequence of the time-sharing power-on design ensures that the communication pins contact the power pins before the power pins, thus ensuring a safe access sequence of communication first and power supply second.

10. The intelligent hot-swappable method for dual-redundant modular power supply switching as described in claim 8, characterized in that: After the new module is connected, the control module automatically incorporates it into the priority strategy calculation of the dual-input power supply, re-evaluates the primary and backup relationship based on the quality parameters of the power supply connected to the new module, and performs adaptive power management.

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