Redundant power system for server, and method and device

Abstract

Embodiments of the present application provide a redundant power system for a server, and a method and a device. The system comprises a master power supply and a slave power supply; a first primary fault detection control unit is configured such that when it is detected that an input power failure anomaly is present in a first primary high-voltage input section, the first primary fault detection control unit controls the slave power supply to actively shut down, activates a first booster circuit unit to operate, and sends a first alarm signal to the master power supply; and a second primary fault detection control unit is configured such that when the first alarm signal is received, the second primary fault detection control unit activates a second combining circuit unit to operate, so as to trigger a first energy storage capacitor to transmit electrical energy to a second energy storage capacitor, so that the voltage of the second energy storage capacitor is boosted. The present application solves the technical problems of poor stability, poor reliability and short power supply duration of a redundant power supply scheme of a server in the related art, thereby achieving the effects of improving the stability, reliability and power supply duration of the redundant power supply scheme of the server.

Description

Redundant power supply systems, methods, and devices for servers

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese Patent Application No. 202411973569.6, filed on December 30, 2024, entitled “Redundant Power Supply System, Method and Apparatus for Servers”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the fields of cloud computing technology and server power supply technology, specifically to a redundant power supply system, method, and apparatus for a server. Background Technology

[0004] A server power supply unit (PSU) is a device used to stably supply power to a server, ensuring the normal operation of the server system. As server operating power increases, the requirements for server reliability and stability become increasingly stringent. Related technologies typically employ a redundant power supply scheme that combines a standard power supply module with a redundant power supply module. When a power supply module fails in the standard power supply module, a power supply module from the redundant power supply module is used to replace the failed module, ensuring the server's normal operation.

[0005] On the one hand, due to the limited size of the capacitors inside the power module, in the event of an abnormal power failure, the solution in related technologies that uses redundant power modules to replace the failed modules can only provide normal power to the server for a short period of time. This may lead to problems such as data loss, system crashes, and equipment damage. The server redundant power supply solution has a short normal power supply duration, low stability, and low reliability. On the other hand, in related technologies, when multiple ordinary power modules fail, only the redundant power module can be used to power the server. The power supply is unstable, resulting in low stability and low reliability of the server redundant power supply solution.

[0006] There is currently no effective solution to the above problems. Summary of the Invention

[0007] This application provides a redundant power supply system, method, and apparatus for a server, which at least solves the technical problems of low stability, low reliability, and short power supply duration in redundant power supply schemes for servers in the related art.

[0008] According to one aspect of the embodiments of this application, a redundant power supply system for a server is provided. The system includes a host power supply and a slave power supply. The slave power supply includes a first primary high-voltage input section, a first primary fault detection control unit, a first energy storage capacitor, a first combining circuit unit, a first boost circuit unit, and a first primary low-voltage output section, the first primary low-voltage output section being configured to supply power to the server. The host power supply includes a second primary high-voltage input section, a second primary fault detection control unit, a second energy storage capacitor, a second combining circuit unit, a second boost circuit unit, a second primary low-voltage output section, and a second primary fault detection control unit, the second primary low-voltage output section being configured to supply power to the server. The first primary fault detection control unit is configured to, when detecting an input power failure anomaly in the first primary high-voltage input section, control the slave power supply to actively shut down, activate the first boost circuit unit, and send a first alarm signal to the host power supply. The second primary fault detection control unit is configured to, upon receiving the first alarm signal, activate the second combining circuit unit to trigger the first energy storage capacitor to transfer electrical energy to the second energy storage capacitor, thereby boosting the voltage of the second energy storage capacitor.

[0009] Optionally, the second primary fault detection control unit is further configured to, when an input power failure is detected in the second primary high-voltage input section, control the host power supply to actively shut down, activate the second boost circuit unit, and send a second alarm signal to the slave power supply; the first primary fault detection control unit is further configured to, when receiving the second alarm signal, activate the first combining circuit unit to trigger the second energy storage capacitor to transfer electrical energy to the first energy storage capacitor, thereby boosting the voltage of the first energy storage capacitor.

[0010] Optionally, the power consumption of the slave power supply and the master power supply are the same for the server load.

[0011] Optionally, the input power failure anomaly is defined as the high-voltage DC bus voltage decreasing from the operating voltage value to the target value, which is determined by the power supply shutdown protection voltage and the preset fault protection threshold.

[0012] Optionally, the first primary fault detection control unit is further configured to activate the first combining circuit unit and send a first combining signal to the host power supply when the slave power supply is powered off; the second primary fault detection control unit is further configured to activate the second combining circuit unit when it receives the first combining signal, so that the second energy storage capacitor is connected in parallel with the first energy storage capacitor, and the second energy storage capacitor and the first energy storage capacitor simultaneously supply power to the second stage low-voltage output section; the second primary fault detection control unit is further configured to activate the second combining circuit unit and send a second combining signal to the slave power supply when the host power supply is powered off; the first primary fault detection control unit is further configured to activate the first combining circuit unit when it receives the second combining signal, so that the first energy storage capacitor and the second energy storage capacitor connected in parallel, and the first energy storage capacitor and the second energy storage capacitor simultaneously supply power to the first stage low-voltage output section.

[0013] Optionally, the slave power supply further includes a primary fault detection control unit configured to detect output anomalies in the primary low-voltage output section; the master power supply further includes a secondary fault detection control unit configured to detect output anomalies in the secondary low-voltage output section; the primary fault detection control unit is further configured to activate the first combining circuit unit and send a third combining signal to the master power supply when no input anomaly is detected in the primary high-voltage input section and an output anomaly is detected in the primary low-voltage output section; the secondary fault detection control unit is further configured to activate the first combining circuit unit and send a third combining signal to the master power supply when a third combining signal is received. When a combining signal is received, the second combining circuit unit is activated, so that the first primary high-voltage input section and the second primary high-voltage input section simultaneously supply power to the second stage low-voltage output section. The second stage fault detection control unit is also configured to activate the second combining circuit unit and send a fourth combining signal to the slave power supply when there is no input abnormality in the second primary high-voltage input section and an output abnormality is detected in the second stage low-voltage output section. The first stage fault detection control unit is also configured to activate the first combining circuit unit when it receives the fourth combining signal, so that the first primary high-voltage input section and the second primary high-voltage input section simultaneously supply power to the first stage low-voltage output section.

[0014] Optionally, the first primary fault detection control unit is further configured to activate the first combining circuit unit and send a fifth combining signal to the host power supply when there is no output abnormality in the first primary low-voltage output section and an input abnormality is detected in the first primary high-voltage input section; the second primary fault detection control unit is further configured to activate the second combining circuit unit when the fifth combining signal is received, so that the second primary high-voltage input section supplies power to the first primary low-voltage output section and the second primary low-voltage output section.

[0015] Optionally, the second primary fault detection control unit is further configured to activate the second combining circuit unit and send a sixth combining signal to the slave power supply when there is no output abnormality in the second primary low-voltage output section and an input abnormality is detected in the second primary high-voltage input section; the first primary fault detection control unit is further configured to activate the first combining circuit unit when the sixth combining signal is received, so that the first primary high-voltage input section supplies power to the first primary low-voltage output section and the second primary low-voltage output section.

[0016] Optionally, the first combining circuit unit is connected to the first energy storage capacitor, and the first combining circuit unit includes a first switch; the first boost circuit unit is connected to the first energy storage capacitor, and the first boost circuit unit includes a second switch, a first inductor, a first diode, and a first transistor; the second combining circuit unit is connected to the second energy storage capacitor, and the second combining circuit unit includes a third switch; the second boost circuit unit is connected to the second energy storage capacitor, and the second boost circuit unit includes a fourth switch, a second inductor, a second diode, and a second transistor; the first combining circuit unit is connected to the second combining circuit unit, and the first combining circuit unit is connected to the second boost circuit unit; the first boost circuit unit is connected to the second boost circuit unit, and the first boost circuit unit is connected to the second combining circuit unit.

[0017] Optionally, when the first combining circuit unit is activated, the first switch switches from the open state to the closed state; when the first boost circuit unit is activated, the second switch switches from the open state to the closed state; when the second combining circuit unit is activated, the third switch switches from the open state to the closed state; and when the second boost circuit unit is activated, the fourth switch switches from the open state to the closed state.

[0018] Optionally, the first and third switches are implemented using metal-oxide-semiconductor field-effect transistors; the first and second boost circuit units are implemented using boost converters.

[0019] According to another aspect of this application, a redundant power management method for a server is provided, applied to a redundant power system according to any one of the above claims. The redundant power system includes a host power supply and a slave power supply. The redundant power management method includes: responding to an input power failure anomaly in the first primary high-voltage input section of the slave power supply corresponding to the server, controlling the slave power supply to actively shut down, activating the first boost circuit unit of the slave power supply, and sending a first alarm signal to the host power supply corresponding to the server, wherein the presence of an input power failure anomaly in the first primary high-voltage input section is detected and determined by the first primary fault detection control unit of the slave power supply; responding to the host power supply receiving the first alarm signal, the second primary fault detection control unit of the host power supply activates the second combining circuit unit of the host power supply to trigger the first energy storage capacitor of the slave power supply to transfer electrical energy to the second energy storage capacitor of the host power supply, thereby boosting the voltage of the second energy storage capacitor.

[0020] Optionally, the redundant power management method further includes: in response to an input power failure anomaly in the second primary high-voltage input section of the host power supply, controlling the host power supply to actively shut down, activating the second boost circuit unit of the host power supply, and sending a second alarm signal to the slave power supply, wherein the presence of an input power failure anomaly in the second primary high-voltage input section is determined by the second primary fault detection control unit; in response to the slave power supply receiving the second alarm signal, the first primary fault detection control unit activates the first combining circuit unit of the slave power supply to trigger the second energy storage capacitor to transfer electrical energy to the first energy storage capacitor, thereby boosting the voltage of the first energy storage capacitor.

[0021] According to another aspect of the embodiments of this application, a redundant power supply device for a server is also provided, including: a server and a redundant power supply system of any one of the above, wherein the redundant power supply system supplies power to the server through a power distribution board, and the server includes a service board, a main control board and a fan board.

[0022] In this embodiment, by utilizing a first primary fault detection control unit and a second primary detection control unit, input power failure anomalies can be detected in a timely manner. Furthermore, by utilizing a first combining circuit unit, a first boost circuit unit, a second combining circuit unit, and a second boost circuit unit, energy is transferred from the first energy storage capacitor to the second energy storage capacitor, increasing the voltage of the second energy storage capacitor. Thus, this application achieves the goal of providing more sustained and stable power to the server using the first primary fault detection control unit, the first combining circuit unit, the first boost circuit unit, the second primary fault detection control unit, the second combining circuit unit, and the second boost circuit unit. This improves the stability, reliability, and power supply duration of the server redundant power supply scheme, thereby solving the technical problems of low stability, low reliability, and short power supply duration in related technologies. Attached Figure Description

[0023] Figure 1 is a structural block diagram of a redundant power supply system for a server according to an embodiment of this application;

[0024] Figure 2 is an electrical schematic diagram of an optional functional circuit according to an embodiment of this application;

[0025] Figure 3 is a schematic diagram of an optional redundant power supply system under a first abnormal condition according to an embodiment of this application;

[0026] Figure 4 is a flowchart of an optional redundant power supply system handling a first abnormal situation according to an embodiment of this application;

[0027] Figure 5 is a flowchart of an optional redundant power supply system handling a fourth abnormal situation according to an embodiment of this application;

[0028] Figure 6 is a structural block diagram of a server redundant power supply system according to related technologies;

[0029] Figure 7 is a schematic diagram of an optional redundant power supply system for a server under a second abnormal condition according to an embodiment of this application.

[0030] Figure 8 is a schematic diagram of an optional redundant power supply system for a server under a third abnormal condition according to an embodiment of this application;

[0031] Figure 9 is a flowchart of an optional redundant power supply system handling a third abnormal situation according to an embodiment of this application;

[0032] Figure 10 is a schematic diagram of the equivalent circuit of an optional functional circuit according to an embodiment of this application;

[0033] Figure 11 is a hardware structure block diagram of a terminal device for an optional redundant power management method for a server according to an embodiment of this application.

[0034] Figure 12 is a flowchart of a redundant power management method for a server according to an embodiment of this application. Detailed Implementation

[0035] The embodiments of this application will be described in detail below with reference to the accompanying drawings and examples.

[0036] It should be noted that the terms "first," "second," etc., in the specification, claims, and drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0037] In the operating environment of this embodiment, this application provides a redundant power supply system for a server as shown in FIG1. ​​FIG1 is a structural block diagram of a redundant power supply system for a server according to an embodiment of this application. As shown in FIG1, the redundant power supply system includes a host power supply and a slave power supply. The slave power supply includes a first primary high-voltage input section, a first primary fault detection control unit, a first energy storage capacitor, a first combining circuit unit, a first boost circuit unit, and a first primary low-voltage output section. The first primary low-voltage output section is configured to supply power to the server. The host power supply includes a second primary high-voltage input section, a second primary fault detection control unit, a second energy storage capacitor, and a second primary high-voltage input section. The system includes a capacitor, a second combining circuit unit, a second boost circuit unit, a second-stage low-voltage output section, and a second-stage fault detection control unit. The second-stage low-voltage output section is configured to supply power to the server. The first primary fault detection control unit is configured to, when a power failure is detected in the first primary high-voltage input section, control the slave power supply to actively shut down, activate the first boost circuit unit, and send a first alarm signal to the host power supply. The second primary fault detection control unit is configured to, upon receiving the first alarm signal, activate the second combining circuit unit to trigger the first energy storage capacitor to transfer energy to the second energy storage capacitor, thereby boosting the voltage of the second energy storage capacitor.

[0038] The first primary high-voltage input section may include an input electromagnetic interference (EMI) filter and rectifier circuit unit and a power factor correction (PFC) phase correction boost circuit unit. The EMI filter and rectifier circuit unit may include a filter and a rectifier. The filter can be configured to filter high-frequency noise in the input power supply. The rectifier can be configured to convert the input AC power to DC power. The PFC phase correction boost circuit unit can be configured to change the phase relationship between the power supply input current and input voltage. By utilizing the PFC phase correction boost circuit unit, the waveforms of the power supply input current and voltage can be made closer to a sine wave, thereby reducing harmonics and improving power supply efficiency. The first energy storage capacitor can be configured to store charge.

[0039] The first and second primary fault detection control units can be implemented using fault detection algorithms. Fault detection algorithms may include, but are not limited to: fault mode effect analysis algorithms, fault tree analysis algorithms, and predictive maintenance algorithms.

[0040] The first-stage low-voltage output section may include a DC-DC isolated buck converter, a synchronous rectifier unit, and an oring-sealed isolated output converter. The DC-DC isolated buck converter and the synchronous rectifier unit can be configured to step down the DC voltage to obtain a stable low-voltage constant DC voltage. The oring-sealed output converter can be configured to prevent current backflow.

[0041] The second primary high-voltage input section may include an input EMI filter rectifier circuit unit and a PFC phase correction boost circuit unit. The second-stage low-voltage output section may include a DC-DC isolated buck circuit unit, a synchronous rectification single-channel unit, and an Oring isolated output circuit unit. A second energy storage capacitor may be configured to store charge. A first alarm signal may be configured to activate the second combining circuit unit when an input power failure occurs in the first primary high-voltage input section.

[0042] The implementation method of using the first primary fault detection control unit to detect an input power failure in the first primary high-voltage input section, control the slave power supply to actively shut down, activate the first boost circuit unit, and send a first alarm signal to the host power supply can be as follows: The first primary fault detection control unit of the slave power supply detects the first primary high-voltage input section of the slave power supply in real time. When the first primary fault detection control unit of the slave power supply detects an input power failure in the primary high-voltage input section of the slave power supply, the first primary fault detection control unit sends a first shutdown signal to the slave power supply, controls the slave power supply to actively shut down, so that the slave power supply and the server are disconnected. Further, the first boost circuit unit is activated, so that the first boost circuit unit is in working state, and a first alarm signal is sent to the host power supply to activate the second combining circuit unit in the host power supply.

[0043] It should be noted that a redundant power supply system may include one or more master power supplies and one or more slave power supplies.

[0044] The implementation method of using the second primary fault detection control unit to trigger the first energy storage capacitor to transfer electrical energy to the second energy storage capacitor, thereby boosting the voltage of the second energy storage capacitor, can be as follows: when the second primary fault detection control unit receives the first alarm signal sent by the first primary fault detection control unit, it activates the second boost circuit unit, so that the second boost circuit unit is in working state, establishes a first energy transmission path from the first energy storage capacitor to the second energy storage capacitor, so that the first energy storage capacitor transfers electrical energy to the second energy storage capacitor through the first energy transmission path, thereby boosting the voltage of the second energy storage capacitor.

[0045] It is easy to understand that, through the server's redundant power supply system, on the one hand, in this embodiment, by utilizing the first primary fault detection control unit and the second primary detection control unit, the system can promptly detect an input power failure in the first primary high-voltage input section of the slave power supply, thereby improving the response speed of the server's redundant power supply system; on the other hand, in this embodiment, by utilizing the first boost circuit unit and the second combiner circuit unit, the first energy storage capacitor transfers electrical energy to the second energy storage capacitor, increasing the voltage of the second energy storage capacitor. In the event of an input power failure in the first primary high-voltage input section, the server's redundant power supply system can supply power to the server more continuously and stably, improving the stability, reliability, and power supply duration of the server's redundant power supply scheme.

[0046] The redundant power supply system of the server in this application embodiment will be further described below.

[0047] Optionally, in the redundant power supply system of the server, the second primary fault detection control unit is further configured to control the host power supply to actively shut down, activate the second boost circuit unit, and send a second alarm signal to the slave power supply when an input power failure is detected in the second primary high voltage input section; the first primary fault detection control unit is further configured to activate the first combining circuit unit when the second alarm signal is received, so as to trigger the second energy storage capacitor to transfer electrical energy to the first energy storage capacitor, thereby boosting the voltage of the first energy storage capacitor.

[0048] The second alarm signal can be configured to activate the first combining circuit unit when there is an input power failure abnormality in the second primary high voltage input section.

[0049] It is easy to understand that, through the server's redundant power supply system, on the one hand, in this embodiment, by utilizing the first primary fault detection control unit and the second primary detection control unit, it is possible to promptly detect an input power failure anomaly in the second primary high-voltage input section of the host power supply, thereby quickly taking measures for the host power supply and the slave power supply, improving the response speed of the server's redundant power supply system; on the other hand, in this embodiment, by utilizing the first combining circuit unit and the second boost circuit unit, the second energy storage capacitor transfers electrical energy to the first energy storage capacitor, increasing the voltage of the first energy storage capacitor. In the event of an input power failure anomaly in the second primary high-voltage input section, the server's redundant power supply system can supply power to the server more continuously and stably, improving the stability, reliability, and power supply duration of the server's redundant power supply scheme.

[0050] Optionally, in the server's redundant power supply system, the slave power supply and the master power supply have the same power consumption for the server load.

[0051] Server load power consumption refers to the electrical power consumed by the server under load. As the server load power increases, the server load power consumption also increases.

[0052] In an exemplary application scenario, as shown in Figure 1, the redundant power supply system includes a master power supply (denoted as PSU2) and a slave power supply (denoted as PSU1). When both PSU1 and PSU2 are in normal working condition, PSU1 and PSU2 operate in a current sharing mode, that is, PSU1 and PSU2 provide the same power support to the server to share the server's total load power consumption.

[0053] It is easy to understand that, through the redundant power system of the server, in this embodiment of the application, the host power supply and the slave power supply provide the same power support to the server, share the total load power consumption of the server, and can more accurately control the overall output of the power system, avoid the host power supply / slave power supply from being overloaded or underloaded, allocate energy resources more rationally, avoid unnecessary energy waste, and extend the utilization efficiency and service life of the host power supply and slave power supply, thereby improving the stability and reliability of the server's redundant power system.

[0054] Optionally, in the redundant power supply system of the server, the input power failure anomaly is the reduction of the high-voltage DC bus voltage from the operating voltage value to the target value, which is determined by the power shutdown protection voltage and the preset fault protection threshold.

[0055] The high-voltage DC bus voltage can be the DC voltage on the first energy storage capacitor, or it can be the DC voltage on the second energy storage capacitor.

[0056] The operating voltage value can be the DC voltage on the second energy storage capacitor when the host power supply is in normal working condition, or the DC voltage on the first energy storage capacitor when the slave power supply is in normal working condition.

[0057] The target value can be configured to assist in determining whether there is an input power failure anomaly in the first primary high-voltage input section or the second primary high-voltage input section. This target value can be configured to represent the voltage value that can still meet the server's power supply requirements even when the host / slave power supply is experiencing an input power failure. When the high-voltage DC bus voltage decreases from the operating voltage value to the target value, it is determined that there is an input power failure anomaly in the first primary high-voltage input section or the second primary high-voltage input section.

[0058] The power shutdown protection voltage can be configured to trigger the automatic shutdown of the host power supply / slave power supply. This power shutdown protection voltage can be set according to the actual situation. When the high voltage DC bus voltage is lower than the power shutdown protection voltage, the host power supply / slave power supply will automatically shut down to avoid damage to the host power supply / slave power supply.

[0059] The preset fault protection threshold can be a voltage value set according to the actual situation.

[0060] One possible implementation for determining the target value by combining the power shutdown protection voltage and the preset fault protection threshold is as follows: In the redundant power supply system of the server, the power shutdown protection voltage and the preset fault protection threshold are set, and the power shutdown protection voltage and the preset fault protection threshold are added together to determine the target value.

[0061] In an exemplary application scenario, still as shown in Figure 1, the server may include a service board load, a main control board load, and a fan board load. These components constitute the server's load system. The redundant power supply system includes a master power supply (denoted as PSU2) and a slave power supply (denoted as PSU1). The first energy storage capacitor C1 is connected to the first primary low-voltage output section via a fifth switch (denoted as S3), the second energy storage capacitor C2 is connected to the second primary low-voltage output section via a sixth switch (denoted as S4), the first energy storage capacitor C1 is connected to the first primary high-voltage input section via a seventh switch (denoted as S5), and the second energy storage capacitor C2 is connected to the second primary high-voltage input section via an eighth switch (denoted as S6). Power is supplied to PSU1 and PSU2 by inputting 220Vac AC power to the first primary high-voltage input section of PSU1 and the second primary high-voltage input section of PSU2.

[0062] Still in the above application scenario, as shown in Figure 1, functional circuits are added at the first and second energy storage capacitors. These functional circuits may include a first combining circuit unit, a first boost circuit unit, a second combining circuit unit, and a second boost circuit unit. The voltage value output by the first low-voltage output section is denoted as Vout1, and the voltage value output by the second low-voltage output section is denoted as Vout2. The high-voltage DC bus integrates Vout1 and Vout2 into Vout and transmits it to the server. The operating voltage value corresponding to PSU1 is denoted as Vbulk1, the operating voltage value corresponding to PSU2 is denoted as Vbulk2, the power shutdown protection voltage corresponding to PSU1 is denoted as Vbulk11, and the power shutdown protection voltage corresponding to PSU2 is denoted as Vbulk22. A preset fault protection threshold is set according to the actual situation (e.g., 30V, 50V) and denoted as K. The target voltage value of the high voltage DC bus corresponding to PSU1 is Vbulk11+K, and the target voltage value of the high voltage DC bus corresponding to PSU2 is Vbulk22+K. When the high voltage DC bus voltage does not decrease from the working voltage value to the target value, PSU1 and PSU2 can still provide power support to the server normally.

[0063] Still within the aforementioned application scenario, Figure 2 is an electrical schematic diagram of an optional functional circuit according to an embodiment of this application, which can realize a first combining circuit unit (i.e., PUS1 combining unit), a first boost circuit unit (i.e., PSU1 boost circuit unit), a second combining circuit unit (i.e., PUS2 combining unit), and an upper second boost circuit unit (i.e., PSU2 boost circuit unit). As shown in Figure 2, when both PSU1 and PSU2 are in normal working condition, PSU1 and PSU2 provide the same power support to the server. Therefore, Vbulk1 and Vbulk2 are equal, and Vbulk11 and Vbulk22 are set to equal values. When PSU1 or PSU2 is in an input power failure abnormal state, the time for Vbulk1 to decrease to Vbulk11 is the same as the time for Vbulk2 to decrease to Vbulk22. Correspondingly, the time for Vbulk1 to decrease to Vbulk11+K is the same as the time for Vbulk2 to decrease to Vbulk22+K. The first abnormal situation is recorded when the first primary fault detection and control unit detects an input power failure in the first primary high-voltage input section (i.e., when the high-voltage DC bus voltage corresponding to PSU1 decreases from Vbulk1 to Vbulk11+K).

[0064] Still within the aforementioned application scenario, Figure 3 is a schematic diagram of an optional redundant power supply system under a first abnormal condition according to an embodiment of this application. That is, Figure 3 is a simplified diagram of the redundant power supply system of the server shown in Figure 1 under a first abnormal condition. Figure 4 is a flowchart of an optional redundant power supply system handling a first abnormal situation according to an embodiment of this application. As shown in Figure 4, when the first primary fault detection control unit detects an input power failure in the first primary high-voltage input section (i.e., when the high-voltage DC bus voltage corresponding to PSU1 decreases from Vbulk1 to Vbulk11+K), the first primary fault detection control unit controls PSU1 to actively shut down, activates the first boost circuit unit, and sends a first alarm signal to PSU2. After receiving the first alarm signal, PSU2 activates the second combining circuit unit. Using the first boost circuit unit and the second combining circuit unit, a first energy transmission path is established between the first energy storage capacitor and the second energy storage capacitor. The voltage Vbulk11+K on the first energy storage capacitor in PSU1 reaches the second energy storage capacitor through the first energy transmission path, causing the voltage Vbulk22+K on the second energy storage capacitor of PSU2 to rise to Vbulk2, extending the time for PSU2 to decrease from Vbulk2 to Vbulk22, and improving the power failure retention time of PSU2.

[0065] It is easy to understand that, through the redundant power supply system of the server, in this embodiment of the application, by detecting the target value of the high-voltage DC bus voltage, the response speed of the redundant power supply system of the server in the event of an input power failure of the host power supply / slave power supply can be effectively improved, the power failure retention time can be extended, and the stability and reliability of the server system can be improved.

[0066] Optionally, in the redundant power supply system of the server, the first primary fault detection control unit is further configured to activate the first combining circuit unit and send a first combining signal to the host power supply when the slave power supply fails to power off; the second primary fault detection control unit is further configured to activate the second combining circuit unit when it receives the first combining signal, so that the second energy storage capacitor is connected in parallel with the first energy storage capacitor, and the second energy storage capacitor and the first energy storage capacitor simultaneously supply power to the second stage low-voltage output section; the second primary fault detection control unit is further configured to activate the second combining circuit unit and send a second combining signal to the slave power supply when the host power supply fails to power off; the first primary fault detection control unit is further configured to activate the first combining circuit unit when it receives the second combining signal, so that the first energy storage capacitor and the second energy storage capacitor connected in parallel, and the first energy storage capacitor and the second energy storage capacitor simultaneously supply power to the first stage low-voltage output section.

[0067] The first combining signal can be configured to activate the second combining circuit unit when the slave device is powered off. The second combining signal can be configured to activate the first combining circuit unit when the master device is powered off.

[0068] When the slave power supply fails to power off, the first combining unit is activated, and the second combining circuit unit is activated. The implementation method for this can be as follows: The first primary fault detection control unit in the slave power supply monitors the slave power supply's status in real time. When the first primary fault detection control unit detects that the slave power supply is in a power-off state, it activates the first combining circuit unit, making it operational and sending a first combining signal to the host power supply. Further, when the second primary fault detection control unit of the host power supply receives the first combining signal, it activates the second combining circuit unit, making it operational and establishing a second energy transmission path between the second energy storage capacitor and the first energy storage capacitor, so that the second energy storage capacitor and the first energy storage capacitor are connected in parallel. The second energy storage capacitor and the first energy storage capacitor simultaneously supply power to the second stage low-voltage output section.

[0069] Similarly, it can be determined that when the host power is turned off, the first combining unit is activated and the second combining circuit unit is activated.

[0070] Still in the above application scenario, as shown in Figure 2, when both PSU1 and PSU2 are in normal working condition, the first normal output power of PSU1 (denoted as Pout1) is equal to the second normal output power of PSU2 (denoted as Pout2). The capacitance value corresponding to the first energy storage capacitor is denoted as C. v1 Let C be the capacitance value corresponding to the second energy storage capacitor. v2 .

[0071] Still in the above application scenario, the situation where PSU2 is in a power-off state is recorded as the fourth abnormal situation. Figure 5 is a flowchart of an optional redundant power supply system for handling the fourth abnormal situation according to an embodiment of this application. As shown in Figure 5, when the second primary fault detection control unit in PSU2 detects that PSU2 is in a power-off state, the second primary fault detection control unit activates the second combining circuit unit, so that the second combining circuit unit is in working state, and sends a second combining signal to the slave power supply. Further, when the first primary fault detection control unit of the slave power supply receives the second combining signal, it activates the first combining circuit unit, so that the first combining circuit unit is in working state, and establishes a second energy transmission path between the first energy storage capacitor and the second energy storage capacitor, so that the first energy storage capacitor and the second energy storage capacitor are connected in parallel. The first energy storage capacitor and the second energy storage capacitor simultaneously supply power to the first primary low-voltage output section. At this time, the first common output power of PSU1 (denoted as Pout11) can be calculated by equation (1). Pout11=Pout1+Pout2 Equation (1)

[0072] Figure 6 is a structural block diagram of a server redundant power supply system according to related technologies. If the server redundant power supply scheme in the related technologies is adopted, as shown in Figure 6, when PSU2 is in a power-off state, only the first energy storage capacitor can be used to supply power to the first-stage low-voltage output section. The duration (denoted as Tholdup1) for which the server redundant power supply scheme with only redundant power modules in the related technologies can provide normal power supply voltage to the server can be calculated by formula (2). Tholdup1=0.5*C v1 *(Vbulk1-Vbulk2) 2 Equation (2) is: / (Pout1+Pout2)

[0073] If the technical solution of this application embodiment is adopted, the duration for which the server's redundant power supply system can provide normal power supply voltage to the server (denoted as Tholdup2) can be calculated by formula (3). Tholdup2=0.5*(C v1 +C v2)*(Vbulk1-Vbulk11) 2 Equation (3) is: / (Pout1+Pout2)

[0074] Therefore, the technical solution of this application embodiment can extend the duration for which the server's redundant power supply system can provide normal power supply voltage to the server, avoiding the problem that the duration for which the server's redundant power supply system can provide normal power supply voltage is shortened when the host power supply or slave power supply is in a power-off state, thus improving the reliability and stability of the server system.

[0075] It is readily understood that, through the redundant power supply system of the server, in this embodiment of the application, the first combining unit and the second combining circuit can connect the first energy storage capacitor and the second energy storage capacitor in parallel. This allows for the full utilization of the energy stored in the first or second energy storage capacitor even when the slave power supply or the master power supply is in a power-off state. This extends the duration for which the redundant power supply system can provide normal power supply voltage to the server, improving the stability and reliability of the server's normal operation. Compared to related technologies that only configure redundant power supply modules, the redundant power supply system of the server in this embodiment of the application can provide normal power supply voltage to the server for a longer period when the slave power supply or the master power supply is in a power-off state. Therefore, the redundant power supply system of this embodiment of the application has higher stability and higher reliability.

[0076] Optionally, in the redundant power supply system of the server, the slave power supply further includes a primary fault detection control unit, configured to detect output anomalies in the primary low-voltage output section; the host power supply further includes a secondary fault detection control unit, configured to detect output anomalies in the secondary low-voltage output section; the primary fault detection control unit is further configured to activate the first combining circuit unit and send a third combining signal to the host power supply when there is no input anomaly in the primary high-voltage input section and an output anomaly is detected in the primary low-voltage output section; the secondary fault detection control unit is further configured to... Upon receiving the third combining signal, the second combining circuit unit is activated, causing the first primary high-voltage input section and the second primary high-voltage input section to simultaneously power the second stage low-voltage output section. The second stage fault detection control unit is also configured to activate the second combining circuit unit and send a fourth combining signal to the slave power supply when there is no input abnormality in the second primary high-voltage input section and an output abnormality is detected in the second stage low-voltage output section. The first stage fault detection control unit is also configured to activate the first combining circuit unit upon receiving the fourth combining signal, causing the first primary high-voltage input section and the second primary high-voltage input section to simultaneously power the first stage low-voltage output section.

[0077] The third combining signal can be configured to activate the second combining circuit unit when there is no input abnormality in the first primary high-voltage input section and an output abnormality in the first primary low-voltage output section. The fourth combining signal can be configured to activate the first combining circuit unit when there is no input abnormality in the second primary high-voltage input section and an output abnormality in the second primary low-voltage output section.

[0078] When there is no input abnormality in the first primary high-voltage input section but an output abnormality in the first primary low-voltage output section, the implementation method for activating the first combining circuit unit and the second combining circuit unit can be as follows: The first-level fault detection control unit in the slave power supply monitors the output of the first-level low-voltage output section in real time. When there is no input abnormality in the first primary high-voltage input section but an output abnormality is detected in the first-level low-voltage output section, the first-level fault detection control unit activates the first combining circuit unit, putting the first combining circuit unit into operation, and sends a third combining signal to the host power supply. Further, when the second-level fault detection control unit of the host power supply receives the third combining signal, it activates the second combining circuit unit, putting the second combining circuit unit into operation, so that the first primary high-voltage input section and the second primary high-voltage input section simultaneously supply power to the second-level low-voltage output section.

[0079] Similarly, it can be determined that when there is no input abnormality in the second primary high-voltage input section and an output abnormality in the second secondary low-voltage output section, the implementation methods for activating the first combining circuit unit and activating the second combining circuit unit can be determined.

[0080] In an exemplary application scenario, the second abnormal situation is defined as the case where the second-level fault detection control unit of PSU2 detects an output abnormality in the second-level low-voltage output section, and the second-level fault detection control unit does not detect an input abnormality in the second-level high-voltage input section. Figure 7 is a schematic diagram of an optional redundant power supply system of the server under the second abnormal situation according to an embodiment of this application. That is, Figure 7 is a simplified diagram of the redundant power supply system of the server shown in Figure 1 under the second abnormal situation. As shown in Figure 7, when the second-level fault detection control unit of PSU2 detects an output abnormality in the second-level low-voltage output section, and the second-level fault detection control unit does not detect an input abnormality in the second-level high-voltage input section, the second-level fault detection control unit activates the second combining circuit unit, puts the second combining circuit unit into operation, and sends a fourth combining signal to the host power supply. Further, when the second-level fault detection control unit of the host power supply receives the fourth combining signal, it activates the first combining circuit unit, puts the first combining circuit unit into operation, and makes the first-level high-voltage input section and the second-level high-voltage input section simultaneously supply power to the first-level low-voltage output section. Since the second primary high voltage input section of PSU2 is still in normal working condition even when there is no input abnormality in the second primary high voltage input section and there is an output abnormality in the second secondary low voltage output section, the power supply resources of the second primary high voltage input section of PSU2 can be fully utilized by using the first and second combining circuit units to increase the voltage value corresponding to the first secondary low voltage output section of PSU1 (denoted as Vbulk3).

[0081] In contrast, if the solution using only redundant power supply modules in related technologies is adopted, as shown in Figure 6, if there is an output abnormality in the secondary low-voltage output section of PSU2, only PSU1 can be used to power the server. If PSU1 also has an output abnormality, it will cause the server to crash. The server redundant power supply solution in related technologies has low stability and reliability.

[0082] It is readily understood that, through the redundant power supply system of the server, in this embodiment of the application, by utilizing the first combining unit and the second combining circuit, the power supply resources of the first primary high-voltage input section / second primary high-voltage input section can be utilized more fully. This extends the duration for which the redundant power supply system can provide normal power supply voltage to the server, improving the stability and reliability of the server's normal operation. Compared with related technologies that only configure redundant power supply modules, the redundant power supply system of the server in this embodiment of the application can provide normal power supply voltage to the server for a longer period of time, even when only the first-stage low-voltage output section or only the second-stage low-voltage output section has an output abnormality. Therefore, the redundant power supply system of the server has higher stability and higher reliability.

[0083] Optionally, in the redundant power supply system of the server, the first primary fault detection control unit is further configured to activate the first combining circuit unit and send a fifth combining signal to the host power supply when there is no output abnormality in the first primary low-voltage output section and an input abnormality is detected in the first primary high-voltage input section; the second primary fault detection control unit is further configured to activate the second combining circuit unit when the fifth combining signal is received, so that the second primary high-voltage input section supplies power to the first primary low-voltage output section and the second primary low-voltage output section.

[0084] The fifth combiner signal can be configured to activate the second combiner circuit unit when there is no output abnormality in the first primary low-voltage output section and an input abnormality in the first primary high-voltage input section.

[0085] When there is no output abnormality in the first primary low-voltage output section but an input abnormality in the first primary high-voltage input section, the implementation method for activating the first combining circuit unit and the second combining circuit unit can be as follows: The first primary fault detection control unit in the slave power supply detects the input of the first primary high-voltage input section in real time. When there is no output abnormality in the first primary low-voltage output section but an output abnormality is detected in the first primary high-voltage input section, the first primary fault detection control unit activates the first combining circuit unit, making the first combining circuit unit work, and sends a fifth combining signal to the host power supply; furthermore, when the second primary fault detection control unit of the host power supply receives the fifth combining signal, it activates the second combining circuit unit, making the second combining circuit unit work, so that the second primary high-voltage input section supplies power to the first and second primary low-voltage output sections.

[0086] It is easy to understand that, through the redundant power supply system of the server, in this embodiment of the application, by utilizing the first combining unit and the second combining circuit, it is possible to simultaneously supply power to the first primary low-voltage output section and the second primary low-voltage output section by utilizing the second primary high-voltage input section when only the first primary high-voltage input section has an input abnormality. This avoids the problem of server system interruption caused by the input abnormality of the first primary high-voltage input section, and improves the reliability and stability of the server's redundant power supply system.

[0087] Optionally, in the redundant power supply system of the server, the second primary fault detection control unit is further configured to activate the second combining circuit unit and send a sixth combining signal to the slave power supply when there is no output abnormality in the second primary low-voltage output section and an input abnormality is detected in the second primary high-voltage input section; the first primary fault detection control unit is further configured to activate the first combining circuit unit when the sixth combining signal is received, so that the first primary high-voltage input section supplies power to the first primary low-voltage output section and the second primary low-voltage output section.

[0088] The sixth combiner signal can be configured to activate the first combiner circuit unit when there is no output abnormality in the second stage low-voltage output section and there is an input abnormality in the second primary high-voltage input section.

[0089] When there is no output abnormality in the second-stage low-voltage output section but an input abnormality in the second-stage high-voltage input section, the implementation method for activating the first combining circuit unit and the second combining circuit unit can be as follows: The second primary fault detection control unit in the host power supply detects the input of the second primary high-voltage input section in real time. When there is no output abnormality in the second-stage low-voltage output section but an output abnormality is detected in the second primary high-voltage input section, the second primary fault detection control unit activates the second combining circuit unit, making the second combining circuit unit work, and sends a sixth combining signal to the host power supply; furthermore, when the first primary fault detection control unit of the slave power supply receives the sixth combining signal, it activates the first combining circuit unit, making the first combining circuit unit work, so that the first primary high-voltage input section supplies power to the first and second-stage low-voltage output sections.

[0090] In an exemplary application scenario, the situation where the second primary fault detection control unit of PSU2 detects an input abnormality in the second primary high-voltage input section and the second secondary fault detection control unit does not detect an output abnormality in the second secondary low-voltage output section is recorded as the third abnormal situation. Figure 8 is a schematic diagram of an optional redundant power supply system of the server under the third abnormal situation according to an embodiment of this application. That is, Figure 8 is a simplified diagram of the redundant power supply system of the server shown in Figure 1 under the third abnormal situation, and Figure 9 is a flowchart of an optional redundant power supply system for handling the third abnormal situation according to an embodiment of this application. As shown in Figure 9, when the second primary fault detection control unit of PSU2 detects an input abnormality in the second primary high-voltage input section and the second secondary fault detection control unit does not detect an output abnormality in the second secondary low-voltage output section, the second primary fault detection control unit activates the second combining circuit unit, puts the second combining circuit unit into a working state, and sends a sixth combining signal to the host power supply; furthermore, when the first secondary fault detection control unit of the slave power supply receives the sixth combining signal, it activates the first combining circuit unit, puts the first combining circuit unit into a working state, so that the first primary high-voltage input section simultaneously supplies power to the first secondary low-voltage output section and the second secondary low-voltage output section. Since the second primary fault detection control unit of PSU2 detects an input abnormality in the second primary high-voltage input section and the second secondary fault detection control unit does not detect an output abnormality in the second secondary low-voltage output section, the second secondary low-voltage output section of PSU2 can still operate normally. Therefore, by using the voltage value corresponding to the first primary high-voltage input section of PSU1 (denoted as Vbulk4), the second secondary low-voltage output section of PSU2 can continue to operate, ensuring the stability of server operation.

[0091] It is easy to understand that, through the redundant power supply system of the server, in this embodiment of the application, by utilizing the first combining unit and the second combining circuit, it is possible to simultaneously supply power to the first primary low-voltage output section and the second primary low-voltage output section by utilizing the second primary high-voltage input section when only the first primary high-voltage input section has an input abnormality. This avoids the problem of server system interruption caused by the input abnormality of the first primary high-voltage input section, and improves the reliability and stability of the server's redundant power supply system.

[0092] Optionally, in the redundant power supply system of the server, a first combining circuit unit is connected to a first energy storage capacitor, and the first combining circuit unit includes a first switch; a first boost circuit unit is connected to the first energy storage capacitor, and the first boost circuit unit includes a second switch, a first inductor, a first diode, and a first transistor; a second combining circuit unit is connected to a second energy storage capacitor, and the second combining circuit unit includes a third switch; a second boost circuit unit is connected to the second energy storage capacitor, and the second boost circuit unit includes a fourth switch, a second inductor, a second diode, and a second transistor; the first combining circuit unit is connected to the second combining circuit unit, and the first combining circuit unit is connected to the second boost circuit unit; the first boost circuit unit is connected to the second boost circuit unit, and the first boost circuit unit is connected to the second combining circuit unit.

[0093] In an exemplary application scenario, as shown in Figure 2, the circuit diagram includes a first combining circuit unit (i.e., PSU1 combining unit), a second combining circuit unit (i.e., PSU2 combining unit), a first boost circuit unit (i.e., PSU1 boost circuit unit), and a second boost circuit unit (i.e., PSU2 boost circuit unit). The PSU1 combining circuit unit is connected to the first energy storage capacitor (denoted as C1), and includes a first switch (denoted as S11); the PSU1 boost circuit unit is connected to C1, and includes a second switch (denoted as S1), a first inductor (denoted as L1), a first diode (denoted as D1), and a first transistor; the PSU2 combining circuit unit is connected to the second energy storage capacitor (denoted as C2), and includes a third switch (denoted as S22); the PSU2 boost circuit unit is connected to C2, and includes a fourth switch (denoted as S2), a second inductor (denoted as L2), a second diode (denoted as D2), and a second transistor; the PSU1 combining circuit unit is connected to the PSU2 combining circuit unit, and the PSU1 combining circuit unit is connected to the PSU2 boost circuit unit; the PSU1 boost circuit unit is connected to the PSU2 boost circuit unit, and the PSU1 boost circuit unit is connected to the PSU2 combining circuit unit.

[0094] It is easy to understand that, through the redundant power supply system of the server, in this embodiment of the application, by utilizing the constructed first combining circuit unit, first boost circuit unit, second combining circuit unit and second boost circuit unit, the energy resources of the slave power supply or the master power supply are allocated more flexibly and the energy resources of the slave power supply or the master power supply are utilized more fully, thereby improving the stability and reliability of the redundant power supply system of the server.

[0095] Optionally, in the redundant power supply system of the server, when the first combining circuit unit is activated, the first switch switches from the open state to the closed state; when the first boost circuit unit is activated, the second switch switches from the open state to the closed state; when the second combining circuit unit is activated, the third switch switches from the open state to the closed state; and when the second boost circuit unit is activated, the fourth switch switches from the open state to the closed state.

[0096] In an exemplary application scenario, still as shown in Figure 2, the PSU1 combining unit includes a first switch (denoted as S11), the PSU1 boost circuit unit includes a second switch (denoted as S1), the PSU2 combining unit includes a third switch (denoted as S22), and the PSU2 boost circuit unit includes a fourth switch (denoted as S2). When the first combining circuit unit is activated, S11 switches from an open state to a closed state; when the first boost circuit unit is activated, S1 switches from an open state to a closed state; when the second combining circuit unit is activated, S22 switches from an open state to a closed state; when the second boost circuit unit is activated, S2 switches from an open state to a closed state.

[0097] Figure 10 is a schematic diagram of the equivalent circuit of an optional functional circuit according to an embodiment of this application. That is, Figure 10 is the equivalent circuit diagram of Figure 2. As shown in Figure 10, when the first primary fault detection control unit detects that the high voltage DC bus voltage corresponding to PSU1 decreases from Vbulk1 to Vbulk11, the first primary fault detection control unit disconnects the fifth switch between the first energy storage capacitor and the first primary low voltage output section, controls PSU1 to actively shut down, controls the closing of S1, activates the first boost circuit unit to work, and sends a first alarm signal to PSU2. After receiving the first alarm signal, PSU2 controls the closing of S22, activates the second combining circuit unit to work, and uses the first boost circuit unit and the second combining circuit unit to establish a first energy transmission path between the first energy storage capacitor and the second energy storage capacitor.

[0098] In another exemplary application scenario, still as shown in Figure 2, when the second-stage fault detection control unit of PSU2 detects an output abnormality in the second-stage low-voltage output section and the second-stage fault detection control unit does not detect an input abnormality in the second-stage high-voltage input section, the second-stage fault detection control unit controls the closure of S22 to activate the second combining circuit unit and sends a fourth combining signal to the host power supply; furthermore, when the second-stage fault detection control unit of the host power supply receives the fourth combining signal, it controls the closure of S11 to activate the first combining circuit unit, so that the first-stage high-voltage input section and the second-stage high-voltage input section simultaneously supply power to the first-stage low-voltage output section.

[0099] Still in the above application scenario, as shown in Figure 2, when the second primary fault detection control unit of PSU2 detects an input abnormality in the second primary high-voltage input section and the second secondary fault detection control unit does not detect an output abnormality in the second secondary low-voltage output section, the second primary fault detection control unit controls the closure of S22 to activate the second combining circuit unit and sends a sixth combining signal to the host power supply; furthermore, when the first secondary fault detection control unit of the slave power supply receives the sixth combining signal, it controls the closure of S11 to activate the first combining circuit unit, so that the first primary high-voltage input section simultaneously supplies power to both the first secondary low-voltage output section and the second secondary low-voltage output section.

[0100] It is easy to understand that, through the redundant power supply system of the server, in this embodiment of the application, by using the first switch, the second switch, the third switch and the fourth switch to control the first and second combining circuit units and the first and second boost circuit units, it is possible to effectively take corresponding measures when the host power supply or the slave power supply fails, so as to supply power to the server system more stably and improve the stability and reliability of the server's redundant power supply system.

[0101] Optionally, in the redundant power supply system of the server, the first and third switches are implemented using metal-oxide-semiconductor field-effect transistors; the first and second boost circuit units are implemented using boost converters.

[0102] It should be noted that the first and third switches can also be implemented using power semiconductor devices (Insulated Gate Bipolar Transistors, or IGBTs for short). By using IGBTs, lower conduction losses and higher switching speeds can be achieved in high-voltage, high-current applications, thereby improving the power utilization of slave / master power supplies and increasing the response speed of the server's redundant power supply system.

[0103] In an exemplary application scenario, still as shown in Figure 10, when both PSU1 and PSU2 are in normal working condition, PSU1 and PSU2 operate in a current-sharing manner, and the capacitance value C corresponding to the first energy storage capacitor is... v1 The capacitance value C corresponding to the second energy storage capacitor v1The first normal output power Pout1 of PSU1 is equal to the second normal output power Pout2 of PSU2. The operating voltage Vbulk1 of PSU1 is equal to the operating voltage Vbulk2 of PSU2. The time for the high-voltage DC bus voltage of PSU1 to decrease from Vbulk1 to Vbulk11 is equal to the time for the high-voltage DC bus voltage of PSU2 to decrease from Vbulk2 to Vbulk22. The boost circuit unit of PSU1 is implemented using a Boost converter. The charge on the first energy storage capacitor is denoted as Q1, the charge on the second energy storage capacitor is denoted as Q2, and the sum of the charges on the first and second energy storage capacitors is denoted as the total charge Q. total .

[0104] When the first primary fault detection and control unit detects that the high-voltage DC bus voltage corresponding to PSU1 decreases from Vbulk1 to Vbulk11, the voltage Vbulk11 on the first energy storage capacitor in PSU1 reaches the second energy storage capacitor through the first energy transmission path, causing the voltage Vbulk22 on the second energy storage capacitor of PSU2 to rise, maintaining the voltage on the second energy storage capacitor above Vbulk22, extending the time for PSU2 to decrease from Vbulk2 to Vbulk22, and improving the power-down retention time of PSU2.

[0105] Assuming we neglect the voltage boosting losses of Q1 and Q2 during the charging and boosting process on the second energy storage capacitor, then Q total The voltage across the second energy storage capacitor remains constant during the charging and boosting process. The extended duration (denoted as Tholdup3) during which the redundant power supply system of the server can provide normal power supply voltage to the server as the high-voltage DC bus voltage corresponding to PSU1 decreases from Vbulk1 to Vbulk11 can be calculated using equation (4). Tholdup3 = 0.5 * C v1 *(Vbulk1-Vbulk11) 2 / (Pout1) Equation (4)

[0106] When the voltage across the first energy storage capacitor is Vbulk11, Q1 can be calculated using equation (5). Q1 = C v1 *Vbulk11 Equation (5)

[0107] Since PSU1 and PSU2 are both operating normally, they work in a current-sharing manner. At this time, the voltage across the first energy storage capacitor is Vbulk22, and Q2 can be calculated using equation (6). Q2 = C v2*Vbulk22 Equation (6)

[0108] Q total It can be calculated using equation (7). Q total =Q1+Q2=C v1 *Vbulk11+C v2 *Vbulk22 Equation (7)

[0109] Since PSU1 and PSU2 operate in a current-sharing manner when both are in normal working condition, Q2 is equal to Q1, so equation (7) can be transformed into equation (8). total =2*C v1 *Vbulk11 Equation (8)

[0110] When the high-voltage DC bus voltage corresponding to PSU1 decreases from Vbulk1 to Vbulk11, the first primary fault detection control unit disconnects the fifth switch between the first energy storage capacitor and the first primary low-voltage output section, controlling PSU1 to actively shut down. At this time, only PSU2 is in operation, and the second superimposed output power of PSU2 (denoted as Pout22) can be calculated using equation (9). Pout22=Pout1+Pout2=2Pout1 Equation (9)

[0111] Since the voltage Vbulk11 on the first energy storage capacitor in PSU1 reaches the second energy storage capacitor through the first energy transfer path, the charge on both the first and second energy storage capacitors is concentrated on the second energy storage capacitor. The concentrated voltage on the second energy storage capacitor (denoted as V) total V can be calculated using equation (10). total =Q total / C v1 =2Vbulk11 Equation (10)

[0112] Therefore, the concentrated voltage V on the second energy storage capacitor total The extended duration (denoted as Tholdup4) by which the server's redundant power system can provide normal power supply voltage to the server during the reduction to Vbulk22 can be calculated using equation (11). Tholdup4 = 0.5 * C v2 *(Vbulk2-Vbulk22) 2 Equation (11) is: / (Pout1+Pout2)

[0113] Since Vbulk1 is equal to Vbulk2, and Vbulk11 is equal to Vbulk22, equation (11) can be transformed into equation (12). Tholdup4 = 0.25 * C v2 *(Vbulk11) 2 / Pout1 Equation (12)

[0114] Therefore, the total extended duration (denoted as T5) for which the redundant power supply system of the server can provide normal power supply voltage to the server can be calculated using equation (13). T5 = Tholdup3 + Tholdup4 (Equation (13))

[0115] Combining equations (4), (12), and (13), we can obtain equation (14). T5 = 0.5 * C v1 *(Vbulk1-Vbulk11) 2 / Pout1+0.25*C v1 *(Vbulk11) 2 / Pout1 Equation (14)

[0116] It is easy to understand that, through the redundant power system of the server, in this embodiment of the application, the first switch and the third switch are implemented using metal-oxide-semiconductor field-effect transistors, which can quickly adjust the state of the first switch and the third switch. The first boost circuit unit and the second boost circuit unit are implemented using a boost converter, which can quickly perform boost processing and improve the response speed of the redundant power system of the server.

[0117] Optionally, in the redundant power supply system of the server, the first primary fault detection control unit and the second primary fault detection control unit are implemented using microcontroller units; the first primary fault detection control unit and the second primary fault detection control unit are implemented using programmable logic devices.

[0118] It is easy to understand that, through the redundant power system of the server, in this embodiment of the application, the first primary fault detection control unit and the second primary fault detection control unit are implemented using a microcontroller unit. The ability of the microcontroller unit to process data quickly can be used to monitor the first primary high-voltage input section of the slave power supply and the second primary high-voltage input section of the host power supply in real time, and react quickly when a fault is detected, thereby improving the response speed of the server's redundant power system. The first primary fault detection control unit and the second primary fault detection control unit are implemented using a Complex Programmable Logic Device (CPLD). The programmability of the CPLD can be used to configure the system more flexibly according to the actual fault detection requirements, thereby improving the flexibility of the server's redundant power system.

[0119] The method embodiments provided in this application can also be executed in server devices or similar computing devices. Taking a server device as an example, FIG11 is a hardware structure block diagram of a server device for an optional server redundant power management method according to an embodiment of this application. As shown in FIG11, the server device may include one or more (only one is shown in FIG11) processors 102 (processor 102 may include, but is not limited to, processing devices such as microprocessors MCUs or programmable logic devices FPGAs) and a memory 104 configured to store data. The server device may also include a transmission device 106 configured for communication functions and an input / output device 108. It will be understood by those skilled in the art that the structure shown in FIG11 is only illustrative and does not limit the structure of the server device. For example, the server device may also include more or fewer components than shown in FIG11, or have a different configuration than shown in FIG11.

[0120] The memory 104 can be configured to store computer programs, such as application software programs and modules, like the computer program corresponding to the redundant power management method for the server in this embodiment. The processor 102 executes various functional applications and data processing by running the computer programs stored in the memory 104, thereby implementing the aforementioned method. The memory 104 may include high-speed random access memory and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 104 may further include memory remotely located relative to the processor 102, and these remote memories can be connected to the server device via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0121] The transmission device 106 is configured to receive or transmit data via a network. Examples of such networks may include a wireless network provided by a communication provider for the server device. In one example, the transmission device 106 includes a Network Interface Controller (NIC), which can connect to other network devices via a base station to communicate with the Internet. In another example, the transmission device 106 may be a Radio Frequency (RF) module configured to communicate wirelessly with the Internet.

[0122] In this application embodiment, a redundant power management method for a server is also provided, applied to any of the redundant power systems described above. The redundant power system includes a host power supply and a slave power supply. Figure 12 is a flowchart of a redundant power management method for a server according to an embodiment of this application. As shown in Figure 12, the method includes the following implementation steps:

[0123] Step S121: In response to the abnormal input power failure in the first primary high voltage input section of the slave power supply corresponding to the server, the slave power supply is controlled to actively shut down, the first boost circuit unit of the slave power supply is activated, and a first alarm signal is sent to the host power supply corresponding to the server. The presence of an abnormal input power failure in the first primary high voltage input section is determined by the first primary fault detection control unit of the slave power supply.

[0124] In step S122, in response to the host power supply receiving the first alarm signal, the second primary fault detection control unit of the host power supply activates the second combining circuit unit of the host power supply to trigger the first energy storage capacitor of the slave power supply to transfer electrical energy to the second energy storage capacitor of the host power supply, thereby boosting the voltage of the second energy storage capacitor.

[0125] Optionally, the above-mentioned redundant power management method for servers may further include the following execution steps:

[0126] Step S123: In response to the input power failure abnormality in the second primary high voltage input section of the host power supply, control the host power supply to actively shut down, activate the second boost circuit unit of the host power supply to work, and send a second alarm signal to the slave power supply. The presence of the input power failure abnormality in the second primary high voltage input section is determined by the second primary fault detection control unit.

[0127] In step S124, in response to the slave power supply receiving the second alarm signal, the first primary fault detection control unit activates the first combining circuit unit of the slave power supply to work, so as to trigger the second energy storage capacitor to transfer electrical energy to the first energy storage capacitor, thereby boosting the voltage of the first energy storage capacitor.

[0128] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods according to the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the related technology, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as read-only memory (ROM), random access memory (RAM), magnetic disk, optical disk), and includes several instructions to cause a terminal device (such as a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0129] This embodiment also provides a redundant power server device, which includes a server and a redundant power system of any of the above. The redundant power system supplies power to the server through a power distribution board. The server includes a service board, a main control board, and a fan board.

[0130] The examples in this embodiment can be referred to the examples described in the above embodiments and exemplary implementations, and will not be repeated here.

[0131] Obviously, those skilled in the art should understand that the modules or steps of this application described above can be implemented using general-purpose computing devices. They can be centralized on a single computing device or distributed across a network of multiple computing devices. They can be implemented using computer-executable program code, and thus can be stored in a storage device for execution by a computing device. In some cases, the steps shown or described can be performed in a different order than those presented here, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, this application is not limited to any particular combination of hardware and software.

[0132] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the principles of this application should be included within the protection scope of this application.

Claims

1. A redundant power supply system for a server, characterized in that, The redundant power supply system includes a master power supply and a slave power supply, wherein... The slave power supply includes a first primary high-voltage input section, a first primary fault detection and control unit, a first energy storage capacitor, a first combining circuit unit, a first boost circuit unit, and a first primary low-voltage output section, wherein the first primary low-voltage output section is configured to supply power to the server; The host power supply includes a second primary high-voltage input section, a second primary fault detection and control unit, a second energy storage capacitor, a second combining circuit unit, a second boost circuit unit, a second secondary low-voltage output section, and a second secondary fault detection and control unit. The second secondary low-voltage output section is configured to supply power to the server. The first primary fault detection control unit is configured to, when an input power failure is detected in the first primary high voltage input section, control the slave power supply to actively shut down, activate the first boost circuit unit to work, and send a first alarm signal to the host power supply. The second primary fault detection control unit is configured to activate the second combining circuit unit when the first alarm signal is received, so as to trigger the first energy storage capacitor to transfer electrical energy to the second energy storage capacitor, thereby boosting the voltage of the second energy storage capacitor.

2. The redundant power supply system for the server according to claim 1, characterized in that, The second primary fault detection control unit is also configured to, when an input power failure is detected in the second primary high voltage input section, control the host power supply to actively shut down, activate the second boost circuit unit to work, and send a second alarm signal to the slave power supply; The first primary fault detection control unit is also configured to activate the first combining circuit unit when the second alarm signal is received, so as to trigger the second energy storage capacitor to transfer electrical energy to the first energy storage capacitor, thereby boosting the voltage of the first energy storage capacitor.

3. The redundant power supply system for the server according to claim 1 or 2, characterized in that, The slave power supply and the master power supply have the same server load power consumption.

4. The redundant power supply system for the server according to claim 1 or 2, characterized in that, The input power failure anomaly is defined as the high-voltage DC bus voltage decreasing from the operating voltage value to the target value, which is determined by the power supply shutdown protection voltage and the preset fault protection threshold.

5. The redundant power supply system for the server according to claim 1, characterized in that, The first primary fault detection and control unit is also configured to activate the first combining circuit unit and send a first combining signal to the host power supply when the slave power supply is powered off. The second primary fault detection control unit is also configured to activate the second combining circuit unit when the first combining signal is received, so that the second energy storage capacitor is connected in parallel with the first energy storage capacitor, and the second energy storage capacitor and the first energy storage capacitor simultaneously supply power to the second stage low voltage output section. The second primary fault detection and control unit is also configured to activate the second combining circuit unit and send a second combining signal to the slave power supply when the host power supply is powered off. The first primary fault detection control unit is also configured to activate the first combining circuit unit when the second combining signal is received, so that the first energy storage capacitor and the second energy storage capacitor connected in parallel supply power the first primary low-voltage output section simultaneously.

6. The redundant power supply system for the server according to claim 1, characterized in that, The slave power supply also includes a primary fault detection and control unit, which is configured to detect output abnormalities in the primary low-voltage output section. The host power supply also includes a second-stage fault detection and control unit, which is configured to detect output abnormalities in the second-stage low-voltage output section. The primary fault detection and control unit is also configured to activate the first combining circuit unit and send a third combining signal to the host power supply when there is no input abnormality in the first primary high voltage input section and an output abnormality is detected in the first primary low voltage output section. The second-level fault detection and control unit is also configured to activate the second-level combining circuit unit when the third combining signal is received, so that the first primary high-voltage input section and the second primary high-voltage input section simultaneously supply power to the second-level low-voltage output section. The second-level fault detection and control unit is also configured to activate the second combining circuit unit and send a fourth combining signal to the slave power supply when there is no input abnormality in the second primary high voltage input section and an output abnormality is detected in the second-level low voltage output section. The primary fault detection control unit is also configured to activate the first combining circuit unit when the fourth combining signal is received, so that the first primary high voltage input section and the second primary high voltage input section simultaneously supply power to the primary low voltage output section.

7. The redundant power supply system for the server according to claim 1, characterized in that, The first primary fault detection control unit is also configured to activate the first combining circuit unit and send a fifth combining signal to the host power supply when there is no output abnormality in the first primary low voltage output section and an input abnormality is detected in the first primary high voltage input section. The second primary fault detection control unit is also configured to activate the second combining circuit unit when the fifth combining signal is received, so that the second primary high voltage input section supplies power to the first primary low voltage output section and the second primary low voltage output section.

8. The redundant power supply system for the server according to claim 1, characterized in that, The second primary fault detection control unit is also configured to activate the second combining circuit unit and send a sixth combining signal to the slave power supply when there is no output abnormality in the second primary low voltage output section and an input abnormality is detected in the second primary high voltage input section. The first primary fault detection control unit is also configured to activate the first combining circuit unit when the sixth combining signal is received, so that the first primary high voltage input section supplies power to the first primary low voltage output section and the second primary low voltage output section.

9. The redundant power supply system for the server according to claim 1, characterized in that, The first combining circuit unit is connected to the first energy storage capacitor, and the first combining circuit unit includes a first switch; The first boost circuit unit is connected to the first energy storage capacitor, and the first boost circuit unit includes a second switch, a first inductor, a first diode, and a first transistor; The second combining circuit unit is connected to the second energy storage capacitor, and the second combining circuit unit includes a third switch; The second boost circuit unit is connected to the second energy storage capacitor. The second boost circuit unit includes a fourth switch, a second inductor, a second diode, and a second transistor. The first combining circuit unit is connected to the second combining circuit unit, and the first combining circuit unit is connected to the second boost circuit unit; The first boost circuit unit is connected to the second boost circuit unit, and the first boost circuit unit is connected to the second combiner circuit unit.

10. The redundant power supply system for the server according to claim 9, characterized in that, When the first combining circuit unit is activated, the first switch changes from the open state to the closed state. When the first boost circuit unit is activated, the second switch changes from the open state to the closed state. When the second combining circuit unit is activated, the third switch switches from the open state to the closed state; When the second boost circuit unit is activated, the fourth switch switches from the open state to the closed state.

11. The redundant power supply system for the server according to claim 9, characterized in that, The first switch and the third switch are implemented using metal-oxide-semiconductor field-effect transistors; The first boost circuit unit and the second boost circuit unit are implemented using a Boost converter.

12. The redundant power supply system for the server according to claim 6, characterized in that, The first primary fault detection control unit and the second primary fault detection control unit are implemented using microcontroller units; The first-level fault detection control unit and the second-level fault detection control unit are implemented using programmable logic devices.

13. The redundant power supply system for the server according to claim 1, characterized in that, The first primary high-voltage input section includes an input electromagnetic interference filtering and rectifier circuit unit and a power factor phase correction boost circuit unit. The input electromagnetic interference filtering and rectifier circuit includes a filter and a rectifier. The filter is configured to filter high-frequency noise in the input power supply, and the rectifier is configured to convert the input AC power into DC power. The power factor phase correction boost circuit unit is configured to change the phase relationship between the power supply input current and the input voltage.

14. The redundant power supply system for the server according to claim 1, characterized in that, The first-stage low-voltage output section includes a DC-DC current isolation step-down circuit unit, a synchronous rectification single-channel unit, and a circularly sealed isolation output circuit unit. The DC-DC current isolation step-down circuit unit and the synchronous rectification single-channel unit are configured to step down the DC voltage to obtain a stable low-voltage constant DC voltage. The circularly sealed isolation output circuit unit is configured to prevent current backflow.

15. The redundant power supply system for the server according to claim 1, characterized in that, The second primary high-voltage input section includes an input electromagnetic interference filtering and rectifier circuit unit and a power factor phase correction boost circuit unit.

16. The redundant power supply system for the server according to claim 1, characterized in that, The second-stage low-voltage output section includes a DC-DC current isolated step-down circuit unit, a synchronous rectification single-channel unit, and a circularly sealed isolated output circuit unit.

17. The redundant power supply system for the server according to claim 4, characterized in that, Determining the target value by means of the power shutdown protection voltage and the preset fault protection threshold includes: setting the power shutdown protection voltage and the preset fault protection threshold in the redundant power system of the server; and adding the power shutdown protection voltage and the preset fault protection threshold to obtain the target value.

18. A method for managing redundant power supplies in a server, characterized in that, The redundant power supply system, applicable to any one of claims 1 to 10, comprises a master power supply and a slave power supply, and the redundant power supply management method includes: In response to an input power failure anomaly in the first primary high-voltage input section of the slave power supply corresponding to the server, the slave power supply is controlled to actively shut down, the first boost circuit unit of the slave power supply is activated, and a first alarm signal is sent to the host power supply corresponding to the server. The presence of an input power failure anomaly in the first primary high-voltage input section is determined by the first primary fault detection and control unit of the slave power supply. In response to the host power supply receiving the first alarm signal, the second primary fault detection control unit of the host power supply activates the second combining circuit unit of the host power supply to trigger the first energy storage capacitor of the slave power supply to transfer electrical energy to the second energy storage capacitor of the host power supply, thereby boosting the voltage of the second energy storage capacitor.

19. The redundant power management method for a server according to claim 18, characterized in that, The redundant power management method further includes: In response to an input power failure anomaly in the second primary high voltage input section of the host power supply, the host power supply is controlled to actively shut down, the second boost circuit unit of the host power supply is activated, and a second alarm signal is sent to the slave power supply. The presence of an input power failure anomaly in the second primary high voltage input section is determined by the second primary fault detection and control unit. In response to the slave power supply receiving the second alarm signal, the first primary fault detection control unit activates the first combining circuit unit of the slave power supply to trigger the second energy storage capacitor to transfer electrical energy to the first energy storage capacitor, thereby boosting the voltage of the first energy storage capacitor.

20. A redundant power supply server device, characterized in that, The system includes a server and the redundant power supply system according to any one of claims 1 to 9, wherein the redundant power supply system supplies power to the server through a power distribution board, and the server includes a service board, a main control board, and a fan board.

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