A power failure processing method, system, device and storage medium

Abstract

This application discloses a power supply fault handling method, system, device, and storage medium, applied in the field of power supply technology. The power supply includes multiple circuit units connected in sequence. The method includes: when a fault is detected in any circuit unit, disconnecting the faulty circuit unit from the preceding circuit unit and disconnecting the last circuit unit from the load device; if it is a serious fault, controlling the relevant switches in the faulty circuit unit so that each backup component is connected to the transmission line, while the corresponding main component is not connected to the transmission line; if it is not a serious fault, executing a preset fault response operation based on circuit data and preset fault response rules; and restoring power supply to the load device when the power supply self-test is successful. Using the solution of this application, power supply fault handling can be performed conveniently and promptly.

Description

Technical Field

[0001] This invention relates to the field of power supply technology, and in particular to a power supply fault handling method, system, device, and storage medium. Background Technology

[0002] With the rapid development of next-generation information technologies such as cloud computing, data centers, as the physical carriers of information systems across various industries, have become indispensable critical infrastructure. The power supplies used by the servers, switches, and other load devices in data centers play a crucial role in power supply and conversion.

[0003] Current power supply designs typically monitor key operating parameters such as power supply temperature, input voltage, input current, input power, output voltage, output current, output power, and fan speed. If an abnormality occurs due to external factors such as power grid fluctuations or ambient temperature changes, the power supply triggers its protection mechanism to shut down, reporting relevant alarm information. When the server or switch system's BMC (Board Management Controller) detects the power supply fault alarm, it notifies maintenance personnel to analyze and handle the anomaly. For minor faults, maintenance personnel are usually required to determine the cause. However, if a serious internal anomaly occurs, such as a short circuit or open circuit in a component, the damaged power module must be replaced. This reliance on manual maintenance not only increases maintenance costs but can also lead to prolonged service interruptions in the data center, severely impacting system stability and reliability.

[0004] In conclusion, how to conveniently and promptly handle power supply failures is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to provide a power failure handling method, system, device, and storage medium to facilitate and promptly handle power failures.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] In a first aspect, the present invention provides a power supply fault handling method, wherein the power supply includes a plurality of circuit units connected in sequence; the power supply fault handling method is applied to a controller, comprising:

[0008] Detect the fault status of each circuit unit in the power supply;

[0009] When a fault is detected in any circuit unit, disconnect the faulty circuit unit from the preceding circuit unit and disconnect the end circuit unit from the load device.

[0010] Based on the circuit data, determine whether it is a serious fault;

[0011] If so, the relevant switches in the faulty circuit unit are controlled so that each spare component in the faulty circuit unit is connected to the power transmission line, and the main component corresponding to each spare component in the faulty circuit unit is not connected to the power transmission line.

[0012] If not, then based on the circuit data and the preset fault response rules, execute the preset fault response operation;

[0013] Perform a self-test on the power supply, and if the self-test is successful, restore the power supply to the load device.

[0014] On the other hand, in the power supply, a power transmission control switch is provided on the power transmission line between adjacent circuit units, a power transmission control switch is provided on the power transmission line between the first circuit unit and the grid side of the preceding stage, and a power transmission control switch is provided on the power transmission line between the last circuit unit and the load device of the following stage.

[0015] When a fault is detected in any circuit unit, the connection between the faulty circuit unit and the preceding circuit unit is disconnected, and the connection between the last circuit unit and the load device is also disconnected, including:

[0016] When a fault is detected in any circuit unit, the power transmission control switch of the stage preceding the faulty circuit unit is turned off, and the power transmission control switch between the end circuit unit and the load device is turned off.

[0017] Upon successful self-test, the power supply to the load device is restored, including:

[0018] Upon successful self-test, close all power control switches and restore power supply to the load device.

[0019] On the other hand, based on circuit data, it is determined whether the fault is serious, including:

[0020] The circuit unit is determined to be seriously faulty when the voltage of a specified sampling resistor in any circuit unit is less than or equal to the lower voltage limit set for the sampling resistor, or greater than or equal to the upper voltage limit set for the sampling resistor.

[0021] On the other hand, based on the circuit data and preset fault response rules, preset fault response operations are executed, including:

[0022] Based on the circuit data, it is determined that when any circuit unit overheats, the power supply fan speed should be increased.

[0023] On the other hand, based on the circuit data and preset fault response rules, preset fault response operations are executed, including:

[0024] Based on the circuit data, when an overcurrent is detected in any circuit unit, the duty cycle of a specified switch in that circuit unit is adjusted to limit the current.

[0025] On the other hand, it also includes:

[0026] When the controller detects a fault, it automatically restarts.

[0027] On the other hand, the power supply includes an input rectifier circuit unit, a phase correction circuit unit, an isolation buck circuit unit, a synchronous rectifier circuit unit, and an isolation output circuit unit connected in sequence; the input rectifier circuit unit is the first circuit unit, and the isolation output circuit unit is the last circuit unit.

[0028] Accordingly, the relevant switches in the faulty circuit unit are controlled to connect each backup component in the faulty circuit unit to the transmission line, and to prevent the main components corresponding to each backup component in the faulty circuit unit from connecting to the transmission line, including:

[0029] When the phase correction circuit unit experiences a serious malfunction, the first main switch, the second main switch, and the third main switch are all turned off, and the first backup switch, the second backup switch, and the third backup switch are all turned on. The first drive circuit is controlled to stop driving the fourth main switch, and the first drive circuit is controlled to drive the fourth backup switch.

[0030] The first main series branch includes a first main switch, a first fuse, and a first inductor connected in series; the first backup series branch includes a first backup switch and a second inductor connected in series; the second main series branch includes a second main switch, a second fuse, a fourth main switch, and a first sampling resistor connected in series; the second backup series branch includes a second backup switch, a fourth backup switch, and a second sampling resistor connected in series; the third main series branch includes a third main switch, a third fuse, and a first capacitor connected in series; and the third backup series branch includes a third backup switch and a second capacitor connected in series.

[0031] The first end of the first main series branch is connected to the first end of the first backup series branch, and the connection end serves as the positive input terminal of the phase correction circuit unit; the second end of the first main series branch is connected to the second end of the first backup series branch, the first end of the second main series branch, the first end of the second backup series branch, and the anode of the first diode; the second end of the second main series branch is connected to the second end of the second backup series branch, the second end of the third main series branch, and the second end of the third backup series branch, and the connection end serves as the negative terminal of the phase correction circuit unit; the cathode of the first diode is connected to the first end of the third main series branch and the first end of the third backup series branch, and the connection end serves as the positive output terminal of the phase correction circuit unit.

[0032] On the other hand, controlling the relevant switches in the faulty circuit unit to connect each spare component in the faulty circuit unit to the transmission line, and preventing the main components corresponding to each spare component in the faulty circuit unit from connecting to the transmission line, includes:

[0033] When the isolation step-down circuit unit experiences a serious fault, the fifth main switch, the seventh main switch, the ninth main switch, the tenth main switch, and the eleventh main switch are all turned off, and the fifth backup switch, the seventh backup switch, the ninth backup switch, the tenth backup switch, and the eleventh backup switch are all turned on. The second drive circuit is controlled to stop driving the sixth main switch and the eighth main switch, and the second drive circuit is controlled to drive the sixth backup switch and the eighth backup switch.

[0034] The fourth main series branch includes the fifth main switch, the eighth fuse, and the sixth main switch connected in series; the fourth backup series branch includes the fifth backup switch and the sixth backup switch connected in series; the fifth main series branch includes the seventh main switch, the fourth fuse, the eighth main switch, and the third sampling resistor connected in series; the fifth backup series branch includes the seventh backup switch, the eighth backup switch, and the fourth sampling resistor connected in series; the sixth main series branch includes the ninth main switch, the fifth fuse, and the third inductor connected in series; the sixth backup series branch includes the ninth backup switch and the fourth inductor connected in series; the seventh main series branch includes the tenth main switch, the ninth fuse, and the third capacitor connected in series; the seventh backup series branch includes the tenth backup switch and the fourth capacitor connected in series; the eighth main series branch includes the eleventh main switch, the sixth fuse, and the fifth capacitor connected in series; the eighth backup series branch includes the eleventh backup switch and the sixth capacitor connected in series.

[0035] The first end of the fourth main series branch is connected to the first end of the fourth backup series branch, the first end of the seventh main series branch, and the first end of the seventh backup series branch, and the connection end serves as the positive input terminal of the isolation step-down circuit unit; the second end of the fourth main series branch is connected to the second end of the fourth backup series branch, the first end of the fifth main series branch, the first end of the fifth backup series branch, the first end of the sixth main series branch, and the first end of the sixth backup series branch; the second end of the fifth main series branch is connected to the second end of the fifth backup series branch, the second end of the eighth main series branch, and the second end of the eighth backup series branch, and the connection end serves as the negative input terminal of the isolation step-down circuit unit;

[0036] The second end of the sixth main series branch is connected to the second end of the sixth backup series branch and the first end of the primary winding of the first transformer, respectively; the second end of the seventh main series branch is connected to the second end of the seventh backup series branch, the first end of the eighth main series branch, the first end of the eighth backup series branch, and the second end of the primary winding of the first transformer, respectively; the first end of the first secondary winding of the first transformer serves as the first output terminal of the isolation step-down circuit unit, and the second end of the second secondary winding of the first transformer serves as the second output terminal of the isolation step-down circuit unit; the second end of the first secondary winding is connected to the first end of the second secondary winding, and the connection terminal serves as the third output terminal of the isolation step-down circuit unit.

[0037] On the other hand, controlling the relevant switches in the faulty circuit unit to connect each spare component in the faulty circuit unit to the transmission line, and preventing the main components corresponding to each spare component in the faulty circuit unit from connecting to the transmission line, includes:

[0038] When the synchronous rectifier circuit unit experiences a serious fault, the twelfth main switch and the fourteenth main switch are both turned off, and the twelfth backup switch and the fourteenth backup switch are both turned on. The third drive circuit is controlled to stop driving the thirteenth main switch and the fifteenth main switch, and the third drive circuit is controlled to drive the thirteenth backup switch and the fifteenth backup switch.

[0039] The ninth main series branch includes a seventh fuse, a twelfth main switch, and a thirteenth main switch connected in series; the ninth backup series branch includes a twelfth backup switch and a thirteenth backup switch connected in series; the tenth main series branch includes a fifth sampling resistor, a tenth fuse, a fourteenth main switch, and a fifteenth main switch connected in series; and the tenth backup series branch includes a sixth sampling resistor, a fourteenth backup switch, and a fifteenth backup switch connected in series.

[0040] The first end of the ninth main series branch is connected to the first end of the ninth backup series branch, and the connection end serves as the first input end of the synchronous rectification circuit unit to connect to the first output end of the isolation buck circuit unit; the first end of the tenth main series branch is connected to the first end of the tenth backup series branch, and the connection end serves as the second input end of the synchronous rectification circuit unit to connect to the second output end of the isolation buck circuit unit; the first end of the fifth inductor serves as the third input end of the synchronous rectification circuit unit to connect to the third output end of the isolation buck circuit unit.

[0041] The second end of the ninth main series branch is connected to the second end of the ninth backup series branch, the second end of the tenth main series branch, the second end of the tenth backup series branch, and the second end of the seventh capacitor, and the connection end serves as the negative output end of the synchronous rectification circuit; the second end of the fifth inductor is connected to the first end of the seventh capacitor, and the connection end serves as the positive output end of the synchronous rectification circuit.

[0042] In a second aspect, the present invention provides a power supply fault handling system, wherein the power supply includes a plurality of circuit units connected in sequence, the power supply fault handling system comprising:

[0043] A fault status detection module is used to detect the fault status of each circuit unit in the power supply;

[0044] The power transmission control switch control module is used to disconnect the faulty circuit unit from the preceding circuit unit and disconnect the end circuit unit from the load equipment when a fault is detected in any circuit unit.

[0045] The critical fault detection module is used to determine whether a fault is critical based on circuit data.

[0046] If so, the first processing module is triggered. The first processing module is used to control the relevant switches in the faulty circuit unit so that each spare component in the faulty circuit unit is connected to the power transmission line, and the main component corresponding to each spare component in the faulty circuit unit is not connected to the power transmission line.

[0047] If not, the second processing module is triggered. The second processing module is used to perform a preset fault response operation based on the circuit data and the preset fault response rules.

[0048] The self-test recovery module is used to perform a self-test of the power supply and, upon successful self-test, restore the power supply to the load device.

[0049] Thirdly, the present invention provides a power supply fault handling device, comprising:

[0050] Memory, used to store computer programs;

[0051] A controller is used to execute the computer program to implement the steps of the power failure handling method as described above.

[0052] Fourthly, the present invention provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the power failure handling method described above.

[0053] The power supply, utilizing the technical solution provided in this invention, comprises multiple circuit units connected sequentially. If a fault is detected in any circuit unit, the connection between the faulty unit and the preceding circuit unit is directly disconnected, and the connection between the last circuit unit and the load device is also disconnected, effectively preventing the fault from escalating and avoiding damage to the load device from the faulty power supply. Furthermore, this application automatically determines whether a fault is serious based on circuit data. If not, it indicates a minor fault, and a preset fault response operation is executed based on the circuit data and preset fault response rules to address such a minor fault. Subsequently, a self-test of the power supply can be performed. A successful self-test indicates that the power supply can resume normal operation, thereby closing each power transmission control switch and restoring power supply to the load device. If a serious fault is determined, it indicates that components in the faulty circuit unit may have been damaged. In this application, the relevant switches in the faulty circuit unit are controlled, ensuring that each backup component in the faulty circuit unit is connected to the power transmission line, and that the main components corresponding to each backup component in the faulty circuit unit are not connected to the power transmission line. In other words, this application's solution includes backups for easily damaged components in the circuit unit. In the event of a severe fault, these backup components can be connected to the transmission line while the original main components are disconnected, enabling automatic repair of severe faults. Subsequently, a power supply self-test can be performed. A successful self-test indicates that the power supply can resume normal operation, thereby restoring power supply to the load equipment.

[0054] As can be seen, the solution proposed in this application effectively prevents the escalation of power failures and avoids damage to the load equipment by controlling the power supply during a power outage. Furthermore, it employs corresponding countermeasures based on the severity of the fault, all without the need for personnel intervention, thus reducing maintenance costs and preventing prolonged business interruptions, thereby ensuring system stability and reliability. In summary, the solution proposed in this application allows for convenient and timely handling of power failures. Attached Figure Description

[0055] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0056] Figure 1 This is a flowchart illustrating the implementation of a power supply fault handling method according to a specific embodiment of the present invention.

[0057] Figure 2 This is a schematic diagram of the circuit units included in a power supply according to a specific embodiment;

[0058] Figure 3 This is a schematic diagram illustrating the principle of power fault handling in one specific implementation method;

[0059] Figure 4 This is a schematic diagram of the phase correction circuit unit in one specific embodiment;

[0060] Figure 5 This is a schematic diagram of the structure of an isolated step-down circuit unit in one specific embodiment;

[0061] Figure 6 This is a schematic diagram of the structure of a synchronous rectifier circuit unit in one specific embodiment.

[0062] Figure 7 This is a schematic diagram of the power supply fault handling system provided in a specific embodiment of the present invention;

[0063] Figure 8 This is a schematic diagram of the structure of a power supply fault handling device provided in a specific embodiment of the present invention;

[0064] Figure 9 This is a schematic diagram of the structure of a computer-readable storage medium according to the present invention. Detailed Implementation

[0065] The core of this invention is to provide a power supply fault handling method, system, device, and storage medium that can conveniently and promptly handle power supply faults.

[0066] To enable those skilled in the art to better understand the present invention, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0067] Please refer to Figure 1 , Figure 1 This is a flowchart illustrating an embodiment of a power supply fault handling method provided by the present invention. The power supply fault handling method is applied to a controller and includes the following steps:

[0068] Step S101: Detect the fault status of each circuit unit in the power supply.

[0069] In this application, the power supply includes multiple circuit units connected sequentially. To effectively prevent the escalation of a fault and to avoid damage to the load equipment from a faulty power supply, this application's solution requires disconnecting the faulty circuit unit from the preceding circuit unit and from the load equipment when a fault is detected in any circuit unit. To achieve this, a certain number of power transmission control switches can typically be installed in the power supply. For example, in one specific embodiment, power transmission control switches can be installed on the transmission lines between adjacent circuit units, on the transmission line between the first circuit unit and the preceding power grid, and on the transmission line between the last circuit unit and the subsequent load equipment, ensuring control flexibility.

[0070] See also Figure 2 The diagram shows a power supply with circuit units included in one specific embodiment. In this embodiment, the power supply includes an input rectifier circuit unit, a phase correction circuit unit, an isolation buck circuit unit, a synchronous rectifier circuit unit, and an isolation output circuit unit connected in sequence. The input rectifier circuit unit is the first circuit unit, and the isolation output circuit unit is the last circuit unit. This embodiment is also a power supply structure commonly used in practical applications.

[0071] The input rectifier circuit unit is the first circuit unit, and a power transmission control switch is installed on the transmission line between it and the grid side of the preceding stage. Figure 2 This is denoted as the transmission control switch S1. The input rectifier circuit unit can receive high-voltage input from the grid side and then perform rectification. The transmission control switch S1 is the transmission control switch of the stage preceding the input rectifier circuit unit.

[0072] The phase correction circuit unit is adjacent to the input rectifier circuit unit and is the second circuit unit used for phase correction, specifically PFC phase correction. A power transmission control switch is installed on the transmission line between the phase correction circuit unit and the input rectifier circuit unit. Figure 2 It is denoted as transmission control switch S2, which is the transmission control switch of the stage before the phase correction circuit unit.

[0073] The isolation step-down circuit unit, adjacent to the phase correction circuit unit, is the third circuit unit used for voltage reduction and to isolate the high-voltage and low-voltage sides, ensuring circuit safety and reliability. A power transmission control switch is installed on the transmission line between the isolation step-down circuit unit and the phase correction circuit unit. Figure 2 It is denoted as power transmission control switch S3, which is the power transmission control switch of the stage before the phase isolation step-down circuit unit.

[0074] The synchronous rectifier circuit unit, adjacent to the isolated buck converter circuit unit, is the fourth circuit unit and is used to rectify the output of the isolated buck converter circuit unit. A power transmission control switch is installed on the transmission line between the synchronous rectifier circuit unit and the isolated buck converter circuit unit. Figure 2 It is denoted as S4, which is the power transmission control switch of the stage before the synchronous rectifier circuit unit.

[0075] The isolated output circuit unit, adjacent to the synchronous rectification circuit unit, is the fifth and final circuit unit. It supplies power to the load device and ensures circuit reliability through isolation. A power supply control switch is installed on the transmission line between the isolated output circuit unit and the synchronous rectification circuit unit. Figure 2 It is denoted as power transmission control switch S5, which is the power transmission control switch of the stage before the isolation output circuit unit.

[0076] A power control switch also needs to be installed on the power transmission line between the isolated output circuit unit and the subsequent load device. Figure 2 It is designated as power transmission control switch S6.

[0077] The controller can detect the fault status of each circuit unit in the power supply in real time or periodically. The specific circuit parameters to be detected and the specific detection methods used can be set and adjusted according to actual needs. By detecting these circuit parameters, the fault status of each circuit unit can be determined. For example, it can detect key circuit parameters such as voltage, current, and temperature of each circuit unit. When circuit parameters that exceed the normal range are detected, it can be determined that the corresponding circuit unit has experienced faults such as overvoltage, undervoltage, overcurrent, short circuit, or overtemperature.

[0078] Step S102: When a fault is detected in any circuit unit, disconnect the faulty circuit unit from the previous stage circuit unit and disconnect the end circuit unit from the load device.

[0079] When a fault is detected in any circuit unit, in order to effectively prevent the fault from escalating and to avoid damage to the load equipment caused by the faulty power supply, the connection between the faulty circuit unit and the preceding circuit unit will be immediately disconnected, and the connection between the following circuit unit and the load equipment will also be disconnected. For example, in one specific scenario, the power supply control switch of the preceding stage of the faulty circuit unit can be turned off, and the power supply control switch between the following circuit unit and the load equipment can also be turned off.

[0080] See also Figure 3 This is a schematic diagram illustrating the principle of power fault handling in one specific implementation method. Figure 3 In the example where a fault is detected in the phase correction circuit unit, the power control switch S2 of the stage preceding the phase correction circuit unit will be turned off to prevent the fault from escalating. Furthermore, the power control switch S6 between the isolation output circuit unit and the load device will be turned off, effectively cutting off the power supply to the load device to protect it.

[0081] It should also be noted that, regardless of which circuit parameters are used to determine the fault of a circuit unit, in order to avoid sampling anomalies caused by interference or other reasons, the sampled circuit parameters are usually filtered, or the sampled circuit parameters are confirmed to be actual sampled data rather than interference data before the fault of the circuit unit can be determined.

[0082] Step S103: Based on the circuit data, determine whether it is a serious fault. If yes, proceed to step S104; otherwise, proceed to step S105.

[0083] There are multiple ways to determine whether a fault is serious, and these can be preset and adjusted.

[0084] In one specific embodiment of the present invention, step S103 may specifically include:

[0085] The circuit unit is determined to be seriously faulty when the voltage of the specified sampling resistor in any circuit unit is less than or equal to the lower voltage limit set for the sampling resistor, or greater than or equal to the upper voltage limit set for the sampling resistor.

[0086] This implementation takes into account that each circuit unit typically has a sampling resistor. If the branch containing a sampling resistor is located on a transmission line, the voltage of that sampling resistor should be within the normal range. A slight deviation from the normal range may indicate a minor anomaly, but if the voltage of the sampling resistor is less than or equal to the lower voltage limit set for that sampling resistor, or greater than or equal to the upper voltage limit set for that sampling resistor, it indicates that the voltage of the sampling resistor has seriously deviated from the normal range, and the circuit unit can be directly identified as having a serious fault. The specific values ​​of the lower and upper voltage limits set for each designated sampling resistor can be set and adjusted according to the actual circuit structure.

[0087] For easier understanding, please refer to the following: Figure 4 This is a schematic diagram of the phase correction circuit unit in one specific embodiment, for example... Figure 4 The phase correction circuit unit currently uses all the main components, so the first sampling resistor R1 is the designated sampling resistor for the phase correction circuit unit. Of course, some circuit units can have multiple designated sampling resistors simultaneously. And it can be understood that if... Figure 4 If the phase correction circuit unit has suffered a serious failure and has been switched to various backup components, then the second sampling resistor R2 is the current designated sampling resistor of the phase correction circuit unit.

[0088] Figure 4 In this circuit, the fourth main switch A4 is the main switching power MOSFET of the phase correction circuit unit. It is the component with the highest failure probability in the phase correction circuit. For example, if the fourth main switch A4 experiences a short circuit failure, the instantaneous short-circuit current exceeds the fusing capacity of the second fuse, causing the second fuse to blow. Therefore, the branch containing the fourth main switch A4 will not continue to be short-circuited due to the short circuit failure of the fourth main switch A4; that is, due to the setting of the second fuse, the opening of the second fuse isolates the fourth main switch A4. If the fourth main switch A4 fails not due to a short circuit but rather an open circuit failure, the branch containing the fourth main switch A4 will also be isolated due to the open circuit of the fourth main switch A4.

[0089] It can be seen that whether the fourth main switch A4 is short-circuited or open-circuited, its branch will be automatically disconnected and isolated. Therefore, the current through the first sampling resistor R1 is 0, and its voltage is also 0. At this time, it can be detected that the voltage of the first sampling resistor R1 is less than or equal to the lower voltage limit set for the first sampling resistor R1, and thus it can be determined that the phase correction circuit unit is seriously faulty.

[0090] Furthermore, it should be noted that in this embodiment, the determination of whether a serious fault has occurred is based on the voltage of the sampling resistor. In other embodiments, the determination of whether a serious fault has occurred can be based on more circuit parameters. These parameters can be set and adjusted according to actual needs and do not affect the implementation of this invention.

[0091] Step S104: Control the relevant switches in the faulty circuit unit so that each spare component in the faulty circuit unit is connected to the power transmission line, and the main component corresponding to each spare component in the faulty circuit unit is not connected to the power transmission line.

[0092] For circuit units that experience serious faults, since serious faults are usually caused by damage to the circuit hardware or irreversible faults, the solution in this application will directly switch the components. That is, by controlling the relevant switches in the circuit unit, each of its spare components will be connected to the power transmission line, while the corresponding main components will not be connected to the power transmission line.

[0093] In one specific embodiment of the present invention, the power supply includes an input rectifier circuit unit, a phase correction circuit unit, an isolation buck circuit unit, a synchronous rectifier circuit unit, and an isolation output circuit unit connected in sequence; the input rectifier circuit unit is the first circuit unit, and the isolation output circuit unit is the last circuit unit.

[0094] Accordingly, step S104 may specifically include:

[0095] When a serious fault occurs in the phase correction circuit unit, the first main switch A1, the second main switch A2 and the third main switch A3 are all turned off, and the first backup switch B1, the second backup switch B2 and the third backup switch B3 are all turned on. The first drive circuit is controlled to stop driving the fourth main switch A4, and the first drive circuit is controlled to drive the fourth backup switch B4.

[0096] In this embodiment, when a serious fault occurs in the phase correction circuit unit, the phase correction circuit unit can resume normal operation by connecting the first backup switch B1, the second backup switch B2 and the third backup switch B3 to the transmission line and driving the fourth backup switch B4.

[0097] The first main series branch includes a first main switch A1, a first fuse F1, and a first inductor L1 connected in series; the first backup series branch includes a first backup switch B1 and a second inductor L2 connected in series; the second main series branch includes a second main switch A2, a second fuse F2, a fourth main switch A4, and a first sampling resistor R1 connected in series; the second backup series branch includes a second backup switch B2, a fourth backup switch B4, and a second sampling resistor R2 connected in series; the third main series branch includes a third main switch A3, a third fuse F3, and a first capacitor C1 connected in series; the third backup series branch includes a third backup switch B3 and a second capacitor C2 connected in series.

[0098] The first end of the first main series branch is connected to the first end of the first backup series branch, and the connection end serves as the positive input terminal of the phase correction circuit unit; the second end of the first main series branch is connected to the second end of the first backup series branch, the first end of the second main series branch, the first end of the second backup series branch, and the anode of the first diode D1; the second end of the second main series branch is connected to the second end of the second backup series branch, the second end of the third main series branch, and the second end of the third backup series branch, and the connection end serves as the negative terminal of the phase correction circuit unit; the cathode of the first diode D1 is connected to the first end of the third main series branch and the first end of the third backup series branch, and the connection end serves as the positive output terminal of the phase correction circuit unit.

[0099] For easier understanding, please refer to the following: Figure 4 , Figure 4 In a specific example, the first terminal of the first main switch A1 is connected to the first terminal of the first backup switch B1, and the connection terminal serves as the positive input terminal of the phase correction circuit unit; the second terminal of the first main switch A1 is connected to the first terminal of the first fuse F1, the second terminal of the first fuse F1 is connected to the first terminal of the first inductor L1, the second terminal of the first backup switch B1 is connected to the first terminal of the second inductor L2, and the second terminal of the second inductor L2 is connected to the second terminal of the first inductor L1, the first terminal of the second main switch A2, the first terminal of the second backup switch B2, and the anode of the first diode D1, respectively.

[0100] The second terminal of the second main switch A2 is connected to the first terminal of the second fuse F2. The second terminal of the second fuse F2 is connected to the first terminal of the fourth main switch A4. The second terminal of the second backup switch B2 is connected to the first terminal of the fourth backup switch B4. The second terminal of the fourth main switch A4 is connected to the first terminal of the first sampling resistor R1. The second terminal of the fourth backup switch B4 is connected to the first terminal of the second sampling resistor R2. The second terminal of the first sampling resistor R1 is connected to the second terminal of the second sampling resistor R2, the second terminal of the first capacitor C1, and the second terminal of the second capacitor C2, and the connection terminal serves as the negative terminal of the phase correction circuit unit.

[0101] The cathode of the first diode D1 is connected to the first terminal of the third main switch A3 and the first terminal of the third backup switch B3, respectively, and the connection terminal serves as the positive output terminal of the phase correction circuit unit; the second terminal of the third main switch A3 is connected to the first terminal of the third fuse F3, the second terminal of the third fuse F3 is connected to the first terminal of the first capacitor C1; the second terminal of the third backup switch B3 is connected to the first terminal of the second capacitor C2.

[0102] In this implementation, before a serious fault occurs in the phase correction circuit unit, the first main switch A1, the second main switch A2, and the third main switch A3 are all in the ON state, while the first backup switch B1, the second backup switch B2, and the third backup switch B3 are all in the OFF state. Specifically, the first drive circuit, under the control of the controller, drives and controls the fourth main switch A4. Figure 4 The first drive circuit is not shown. After a serious failure in the phase correction circuit unit, the first main switch A1, the second main switch A2, and the third main switch A3 can be turned off, while the first backup switch B1, the second backup switch B2, and the third backup switch B3 can be turned on. The first drive circuit then drives and controls the fourth backup switch B4, switching to the various backup components of the phase correction circuit unit, allowing the phase correction circuit unit to continue operating normally. In this embodiment, the fourth main switch A4 and the fourth backup switch B4 are typically MOSFETs, while the remaining main and backup switches can usually be implemented using relays.

[0103] It should also be noted that, as can be seen from the circuit structure, in this implementation, spare components are provided for the power MOSFET, inductor and capacitor in the phase correction circuit unit. This is because the phase correction circuit unit is located on the high voltage side, and in the event of a serious fault, usually one or more of these three components will be damaged.

[0104] It should be noted that this embodiment includes a first fuse F1, a second fuse F2, and a third fuse F3, which are connected in series with the first inductor L1, the fourth main switch A4, and the first capacitor C1, respectively. This effectively disconnects the corresponding branch in time when any of these three main components experiences an overcurrent, preventing the fault from escalating. Furthermore, no fuse is installed in the branch containing the corresponding backup component, which effectively reduces costs, as it is rare for a serious fault to occur immediately after switching to the backup component in practical applications. Of course, if necessary in other situations, fuses can also be installed in the branch containing the relevant backup component.

[0105] Furthermore, it is understandable that in practical applications, although switching to backup components allows the circuit unit to resume normal operation, relevant log information is usually still sent to the staff. This allows the staff to repair or replace the main components and fuses in the previously damaged circuit units when there is no impact on business operations, such as when the server and its power supply are periodically inspected. This allows each circuit unit to be restored to a state where all components are normal and the main components are used by default.

[0106] Step S105: Based on the circuit data and the preset fault response rules, execute the preset fault response operation.

[0107] If the circuit unit is determined to have experienced a non-critical fault, meaning a minor fault, which is usually temporary, then there is no need to switch to a backup component. Instead, based on circuit data and preset fault response rules, pre-defined fault response actions will be executed to effectively address the minor fault situation. Of course, the specific fault response actions will differ depending on the type of minor fault.

[0108] Step S106: Perform a power supply self-test, and if the self-test is successful, restore the power supply to the load device.

[0109] Regardless of whether the fault is severe or minor, a self-test of the power supply is required before restoring power to the load device. This can involve checking relevant circuit parameters, and a successful self-test is confirmed when all parameters are normal. At this point, power can be restored to the load device, achieving self-recovery from the fault. For example, in one specific scenario, upon successful self-test, all power control switches can be closed, thereby restoring power to the load device. Furthermore, in some cases where the load device is a critical device like a server, dual power supply redundancy is typically implemented. In this case, during periods when the power supply described in this application is unable to power the load device, a backup power supply can provide power. After the power supply in this application automatically recovers from the fault, it can be reused to power the load device.

[0110] In one specific embodiment of the present invention, step S105 may include:

[0111] Based on the circuit data, it was determined that when any circuit unit overheats, the power supply fan speed should be increased.

[0112] This implementation takes into account that, for non-serious faults, a common situation is overheating of circuit units. In this case, the components in the circuit unit are usually not damaged. Based on the circuit data, if it is determined that any circuit unit is overheating, the power supply fan speed can be increased to effectively dissipate heat from the inside of the power supply, thereby eliminating the overheating problem.

[0113] In one specific embodiment of the present invention, step S105 may include:

[0114] Based on circuit data, when an overcurrent occurs in any circuit unit, the duty cycle of a specified switch in that circuit unit is adjusted to limit the current.

[0115] This implementation takes into account that overcurrent is a common occurrence even in non-critical faults. In such cases, although the current is excessive, the relevant components are not damaged, and timely intervention can effectively resolve the situation. Specifically, this situation is usually caused by excessive load. Current limiting can be achieved by adjusting the duty cycle of a designated switch in the circuit unit. For example, in one specific scenario, reducing the duty cycle of the designated switch in the circuit unit will prevent overcurrent from occurring during subsequent operation after the self-test is completed. In another specific scenario, setting the duty cycle of the designated switch in the circuit unit to a state where it can be reduced to 0 will, after the self-test is completed, will, during subsequent operation, if a high current or overcurrent trend is detected in a certain carrier cycle, set the duty cycle of the designated switch in the circuit unit to 0 in the next carrier cycle to effectively avoid overcurrent.

[0116] In one specific embodiment of the present invention, it may further include: when the controller detects a fault of its own, the controller automatically restarts.

[0117] This implementation takes into account that, in addition to component failures on the power transmission line, the controller that controls the power supply may also malfunction. Most controller failures are program code crashes or abnormal control logic, which can usually be resolved by restarting the controller. Therefore, in this implementation, when the controller detects a fault, it can automatically restart to attempt to resolve the fault. For example, if the controller detects that one of its programs has crashed, it can force a restart.

[0118] In one specific embodiment of the present invention, the method may further include: when the controller detects a fluctuation in the mains voltage, filtering the mains voltage and filtering out the mains voltage fluctuation alarm. This embodiment takes into account that mains voltage fluctuations are common and usually short-term fluctuations. To avoid problems with the controller's control logic based on the mains voltage, the mains voltage can be filtered in software, for example, by averaging, thus not affecting the controller's control logic based on the mains voltage. Furthermore, such short-term fluctuations cannot be completely avoided by hardware filtering circuits; therefore, filtering the mains voltage directly in software can avoid the impact of short-term mains voltage fluctuations without increasing circuit costs.

[0119] In one specific embodiment of the present invention, step S104 may specifically include:

[0120] When a serious fault occurs in the isolation step-down circuit unit, the fifth main switch A5, the seventh main switch A7, the ninth main switch A9, the tenth main switch A10, and the eleventh main switch A11 are all turned off, and the fifth backup switch B5, the seventh backup switch B7, the ninth backup switch B9, the tenth backup switch B10, and the eleventh backup switch B11 are all turned on. The second drive circuit is controlled to stop driving the sixth main switch A6 and the eighth main switch A8, and the second drive circuit is controlled to drive the sixth backup switch B6 and the eighth backup switch B8.

[0121] Among them, see Figure 5 , Figure 5 This is a schematic diagram of the isolated step-down circuit unit in one specific embodiment. The fourth main series branch includes a fifth main switch A5, an eighth fuse F8, and a sixth main switch A6 connected in series; the fourth backup series branch includes a fifth backup switch B5 and a sixth backup switch B6 connected in series; the fifth main series branch includes a seventh main switch A7, a fourth fuse F4, an eighth main switch A8, and a third sampling resistor R3 connected in series; the fifth backup series branch includes a seventh backup switch B7, an eighth backup switch B8, and a fourth sampling resistor R4 connected in series; the sixth main series branch includes a ninth main switch A9, a fifth fuse F8, and a sixth main switch A6 connected in series. The circuit includes circuit breaker F5 and third inductor L3; the sixth backup series branch includes the ninth backup switch B9 and fourth inductor L4 connected in series; the seventh main series branch includes the tenth main switch A10, ninth fuse F9 and third capacitor C3 connected in series; the seventh backup series branch includes the tenth backup switch B10 and fourth capacitor C4 connected in series; the eighth main series branch includes the eleventh main switch A11, sixth fuse F6 and fifth capacitor C5 connected in series; the eighth backup series branch includes the eleventh backup switch B11 and sixth capacitor C6 connected in series.

[0122] The first end of the fourth main series branch is connected to the first end of the fourth backup series branch, the first end of the seventh main series branch, and the first end of the seventh backup series branch, and the connection end serves as the positive input terminal of the isolation step-down circuit unit; the second end of the fourth main series branch is connected to the second end of the fourth backup series branch, the first end of the fifth main series branch, the first end of the fifth backup series branch, the first end of the sixth main series branch, and the first end of the sixth backup series branch; the second end of the fifth main series branch is connected to the second end of the fifth backup series branch, the second end of the eighth main series branch, and the second end of the eighth backup series branch, and the connection end serves as the negative input terminal of the isolation step-down circuit unit.

[0123] The second end of the sixth main series branch is connected to the second end of the sixth backup series branch and the first end of the primary winding of the first transformer T1, respectively. The second end of the seventh main series branch is connected to the second end of the seventh backup series branch, the first end of the eighth main series branch, the first end of the eighth backup series branch, and the second end of the primary winding of the first transformer T1, respectively. The first end of the first secondary winding of the first transformer T1 serves as the first output terminal of the isolation step-down circuit unit, and the second end of the second secondary winding of the first transformer T1 serves as the second output terminal of the isolation step-down circuit unit. The second end of the first secondary winding is connected to the first end of the second secondary winding, and the connection terminal serves as the third output terminal of the isolation step-down circuit unit.

[0124] In this implementation, when a serious fault occurs in the isolation step-down circuit unit, the fifth backup switch B5, the seventh backup switch B7, the ninth backup switch B9, the tenth backup switch B10, and the eleventh backup switch B11 are all turned on, allowing the corresponding branch to be connected to the transmission line. Furthermore, the sixth backup switch B6 and the eighth backup switch B8 are driven, enabling the isolation step-down circuit unit to resume normal operation. In this implementation, the sixth main switch A6, the eighth main switch A8, the sixth backup switch B6, and the eighth backup switch B8 are typically MOSFETs, while the remaining main and backup switches can usually be implemented using relays.

[0125] As can be seen from the circuit structure, in this embodiment, spare components are provided for the power MOSFET, inductor and capacitor in the isolated step-down circuit unit. This is because the isolated step-down circuit unit is located on the high-voltage side, and in the event of a serious fault, usually one or more of these three components will be damaged.

[0126] This implementation includes a fourth fuse F4, a fifth fuse F5, a sixth fuse F6, an eighth fuse F8, and a ninth fuse F9, which are connected in series with the eighth main switch A8, the third inductor L3, the fifth capacitor C5, the sixth main switch A6, and the third capacitor C3, respectively. This effectively disconnects the corresponding branch in time when any of these five main components experiences an overcurrent, preventing the fault from escalating. Furthermore, no fuse is installed in the branch containing the corresponding backup component, effectively reducing costs. Similarly, in practical applications, it is rare for a serious fault to occur in the circuit unit after switching to the backup component. Of course, if necessary in other situations, fuses can also be installed in the branch containing the relevant backup component.

[0127] In one specific embodiment of the present invention, step S104 may specifically include:

[0128] When a serious fault occurs in the synchronous rectifier circuit unit, the twelfth main switch A12 and the fourteenth main switch A14 are both turned off, and the twelfth backup switch B12 and the fourteenth backup switch B14 are both turned on. The third drive circuit is controlled to stop driving the thirteenth main switch A13 and the fifteenth main switch A15, and the third drive circuit is controlled to drive the thirteenth backup switch B13 and the fifteenth backup switch B15.

[0129] See Figure 6 , Figure 6 This is a schematic diagram of the structure of an isolated step-down circuit unit in one specific embodiment. The ninth main series branch includes a seventh fuse F7, a twelfth main switch A12, and a thirteenth main switch A13 connected in series; the ninth backup series branch includes a twelfth backup switch B12 and a thirteenth backup switch B13 connected in series; the tenth main series branch includes a fifth sampling resistor R5, a tenth fuse F10, a fourteenth main switch A14, and a fifteenth main switch A15 connected in series; the tenth backup series branch includes a sixth sampling resistor R6, a fourteenth backup switch B14, and a fifteenth backup switch B15 connected in series.

[0130] The first end of the ninth main series branch is connected to the first end of the ninth standby series branch, and the connection end serves as the first input end of the synchronous rectification circuit unit to connect to the first output end of the isolation buck circuit unit; the first end of the tenth main series branch is connected to the first end of the tenth standby series branch, and the connection end serves as the second input end of the synchronous rectification circuit unit to connect to the second output end of the isolation buck circuit unit; the first end of the fifth inductor L5 serves as the third input end of the synchronous rectification circuit unit to connect to the third output end of the isolation buck circuit unit.

[0131] The second end of the ninth main series branch is connected to the second end of the ninth backup series branch, the second end of the tenth main series branch, the second end of the tenth backup series branch, and the second end of the seventh capacitor C7, and the connection end serves as the negative output terminal of the synchronous rectifier circuit; the second end of the fifth inductor L5 is connected to the first end of the seventh capacitor C7, and the connection end serves as the positive output terminal of the synchronous rectifier circuit.

[0132] In this implementation, when a serious fault occurs in the synchronous rectifier circuit unit, the corresponding branch is connected to the transmission line by turning on both the twelfth backup switch B12 and the fourteenth backup switch B14, and the thirteenth backup switch B13 and the fifteenth backup switch B15 are driven, enabling the synchronous rectifier circuit unit to resume normal operation. In this implementation, the driving of the thirteenth main switch A13 and the fifteenth main switch A15, as well as the thirteenth backup switch B13 and the fifteenth backup switch B15, are typically MOSFETs, while the remaining main and backup switches can usually be implemented based on relays.

[0133] As can be seen from the circuit structure, in this embodiment, spare components are provided for the power MOSFETs in the synchronous rectification circuit unit. This is because the synchronous rectification circuit unit is located on the low-voltage side. When a serious fault occurs in the synchronous rectification circuit unit, usually one or more power MOSFETs are damaged, while inductors and capacitors are usually not damaged. Therefore, there is no need to provide spare components for the inductors and capacitors in the synchronous rectification circuit unit.

[0134] This implementation includes a seventh fuse F7 and a tenth fuse F10, ensuring that if an overcurrent occurs in the branch containing the twelfth main switch A12 or the fourteenth main switch A14, the branch can be promptly disconnected to prevent the fault from escalating. Furthermore, no fuse is installed in the branch containing the corresponding backup components, effectively reducing costs. Similarly, in practical applications, it is rare for a serious fault to occur in the circuit unit after switching to the backup components. Of course, if necessary in other situations, fuses can also be installed in the branches containing the relevant backup components.

[0135] The power supply provided by this invention includes multiple circuit units connected in sequence. If a fault is detected in any circuit unit, the connection between the faulty circuit unit and the preceding circuit unit will be directly disconnected, and the connection between the last circuit unit and the load device will also be disconnected, effectively preventing the fault from escalating and avoiding damage to the load device from the faulty power supply. Furthermore, this application automatically determines whether the fault is serious based on circuit data. If not, it indicates a minor fault, and a preset fault response operation can be executed based on the circuit data and preset fault response rules to address such a minor fault. A self-test of the power supply can then be performed. If the self-test is successful, it indicates that the power supply can resume normal operation and restore power supply to the load device. If a serious fault is determined, it indicates that components in the faulty circuit unit may have been damaged. In this case, the relevant switches in the faulty circuit unit are controlled, allowing each backup component in the faulty circuit unit to be connected to the transmission line, while preventing the main components corresponding to each backup component in the faulty circuit unit from being connected to the transmission line. In other words, this application's solution includes backups for easily damaged components in the circuit unit. In the event of a severe fault, these backup components can be connected to the transmission line while the original main components are disconnected, enabling automatic repair of severe faults. Subsequently, a power supply self-test can be performed. A successful self-test indicates that the power supply can resume normal operation, allowing the closure of all transmission control switches and restoration of power supply to the load equipment.

[0136] As can be seen, the solution proposed in this application effectively prevents the escalation of power failures and avoids damage to the load equipment by controlling the power supply during a power outage. Furthermore, it employs corresponding countermeasures based on the severity of the fault, all without the need for personnel intervention, thus reducing maintenance costs and preventing prolonged business interruptions, thereby ensuring system stability and reliability. In summary, the solution proposed in this application allows for convenient and timely handling of power failures.

[0137] Corresponding to the above method embodiments, this invention also provides a power supply fault handling system, which can be referred to in conjunction with the above.

[0138] See Figure 7 The diagram shown is a structural schematic of a power supply fault handling system according to the present invention. The power supply includes multiple circuit units connected in sequence. The power supply fault handling system includes:

[0139] The fault status detection module 701 is used to detect the fault status of each circuit unit in the power supply.

[0140] The power transmission control switch control module 702 is used to disconnect the connection between the faulty circuit unit and the previous stage circuit unit, and disconnect the connection between the end circuit unit and the load equipment when a fault is detected in any circuit unit.

[0141] The critical fault determination module 703 is used to determine whether a fault is critical based on circuit data.

[0142] If so, the first processing module 704 is triggered. The first processing module 704 is used to control the relevant switches in the faulty circuit unit so that each spare component in the faulty circuit unit is connected to the power transmission line, and the main component corresponding to each spare component in the faulty circuit unit is not connected to the power transmission line.

[0143] If not, the second processing module 705 is triggered. The second processing module 705 is used to execute a preset fault response operation based on the circuit data and the preset fault response rules.

[0144] The self-test recovery module 706 is used to perform a self-test of the power supply and restore the power supply to the load device when the self-test is successful.

[0145] In one specific embodiment of the present invention, in the power supply, a power transmission control switch is provided on the power transmission line between adjacent circuit units, a power transmission control switch is provided on the power transmission line between the first circuit unit and the grid side of the preceding stage, and a power transmission control switch is provided on the power transmission line between the last circuit unit and the load device of the following stage.

[0146] The power transmission control switch control module 702 is specifically used to: when a fault is detected in any circuit unit, turn off the power transmission control switch of the stage before the faulty circuit unit, and turn off the power transmission control switch between the end circuit unit and the load equipment;

[0147] The self-test recovery module 706 is specifically used to: perform a power supply self-test; and when the self-test is successful, close all power transmission control switches and restore power supply to the load equipment.

[0148] In one specific embodiment of the present invention, the severe fault judgment module 703 is specifically used for:

[0149] The circuit unit is determined to be seriously faulty when the voltage of the specified sampling resistor in any circuit unit is less than or equal to the lower voltage limit set for the sampling resistor, or greater than or equal to the upper voltage limit set for the sampling resistor.

[0150] In one specific embodiment of the present invention, the second processing module 705 is specifically used for:

[0151] Based on the circuit data, it was determined that when any circuit unit overheats, the power supply fan speed should be increased.

[0152] In one specific embodiment of the present invention, the second processing module 705 is specifically used for:

[0153] Based on circuit data, when an overcurrent occurs in any circuit unit, the duty cycle of a specified switch in that circuit unit is adjusted to limit the current.

[0154] In one specific embodiment of the present invention, a restart module is further included, used for:

[0155] When the controller detects a fault, it will automatically restart.

[0156] In one specific embodiment of the present invention, the power supply includes an input rectifier circuit unit, a phase correction circuit unit, an isolation buck circuit unit, a synchronous rectifier circuit unit, and an isolation output circuit unit connected in sequence; the input rectifier circuit unit is the first circuit unit, and the isolation output circuit unit is the last circuit unit.

[0157] Accordingly, the first processing module 704 is specifically used for:

[0158] When a serious fault occurs in the phase correction circuit unit, the first main switch, the second main switch, and the third main switch are all turned off, and the first backup switch, the second backup switch, and the third backup switch are all turned on. The first drive circuit is controlled to stop driving the fourth main switch, and the first drive circuit is controlled to drive the fourth backup switch.

[0159] In one specific embodiment of the present invention, the first processing module 704 is specifically used for:

[0160] When a serious fault occurs in the isolation step-down circuit unit, the fifth main switch, the seventh main switch, the ninth main switch, the tenth main switch and the eleventh main switch are all turned off, and the fifth backup switch, the seventh backup switch, the ninth backup switch, the tenth backup switch and the eleventh backup switch are all turned on. The second drive circuit is controlled to stop driving the sixth main switch and the eighth main switch, and the second drive circuit is controlled to drive the sixth backup switch and the eighth backup switch.

[0161] In one specific embodiment of the present invention, the first processing module 704 is specifically used for:

[0162] When a serious fault occurs in the synchronous rectifier circuit unit, both the twelfth and fourteenth main switches are turned off, and both the twelfth and fourteenth backup switches are turned on. The third drive circuit is controlled to stop driving the thirteenth and fifteenth main switches, and the third drive circuit is controlled to drive the thirteenth and fifteenth backup switches.

[0163] Corresponding to the above methods and system embodiments, this invention also provides a power failure handling device, a computer-readable storage medium, and a computer program product, which can be referred to in conjunction with the above.

[0164] See Figure 8 As shown, the device may include:

[0165] Memory 801 is used to store computer programs;

[0166] Processor 802 is configured to execute a computer program to implement the steps of the power failure handling method as described in any of the above embodiments.

[0167] The computer program product includes a computer program / instructions that, when executed by a processor, implement the steps of the power failure handling method as described in any of the above embodiments.

[0168] See also Figure 9 The computer-readable storage medium 90 stores a computer program 91, which, when executed by a processor, implements the steps of the power failure handling method as described in any of the above embodiments. The computer-readable storage medium 90 referred to herein includes RAM (Random Access Memory), main memory, ROM (Read-Only Memory), EEPROM (Electrically Erasable Programmable Read Only Memory), registers, hard disks, removable disks, or any other form of storage medium known in the art.

[0169] It should also be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0170] Those skilled in the art will further recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of each example have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this invention. Specific examples have been used herein to illustrate the principles and implementation methods of the invention; the description of the above embodiments is only for the purpose of helping to understand the technical solution and core ideas of the invention. It should be noted that those skilled in the art can make several improvements and modifications to the invention without departing from the principles of the invention, and these improvements and modifications also fall within the protection scope of the invention.

Claims

1. A power failure handling method, characterized by, The power supply includes multiple circuit units connected in sequence; The power supply fault handling method is applied to the controller and includes: Detect the fault status of each circuit unit in the power supply; When a fault is detected in any circuit unit, disconnect the faulty circuit unit from the preceding circuit unit and disconnect the end circuit unit from the load device. Based on the circuit data, determine whether it is a serious fault; If so, the relevant switches in the faulty circuit unit are controlled so that each spare component in the faulty circuit unit is connected to the power transmission line, and the main component corresponding to each spare component in the faulty circuit unit is not connected to the power transmission line. If not, then based on the circuit data and the preset fault response rules, execute the preset fault response operation; Perform a self-test on the power supply, and if the self-test is successful, restore the power supply to the load device; Determining whether a fault is serious includes: when the voltage of a specified sampling resistor in any circuit unit is less than or equal to the lower voltage limit set for the sampling resistor, or greater than or equal to the upper voltage limit set for the sampling resistor, the circuit unit is determined to be a serious fault. Based on the circuit data and preset fault response rules, execute preset fault response operations, including: Based on the circuit data, it is determined that when any circuit unit overheats, the power supply fan speed should be increased. Based on the circuit data, when an overcurrent is detected in any circuit unit, the duty cycle of a specified switch in that circuit unit is adjusted to limit the current.

2. The power failure handling method of claim 1, wherein In the power supply, a power transmission control switch is provided on the transmission line between adjacent circuit units, a power transmission control switch is provided on the transmission line between the first circuit unit and the grid side of the preceding stage, and a power transmission control switch is provided on the transmission line between the last circuit unit and the load device of the following stage. When a fault is detected in any circuit unit, the connection between the faulty circuit unit and the preceding circuit unit is disconnected, and the connection between the last circuit unit and the load device is also disconnected, including: When a fault is detected in any circuit unit, the power transmission control switch of the stage preceding the faulty circuit unit is turned off, and the power transmission control switch between the end circuit unit and the load device is turned off. Upon successful self-test, the power supply to the load device is restored, including: Upon successful self-test, close all power control switches and restore power supply to the load device.

3. The power failure handling method of claim 1, wherein, Also includes: When the controller detects a fault, it automatically restarts.

4. The power failure handling method according to any one of claims 1 to 3, characterized by, The power supply includes an input rectifier circuit unit, a phase correction circuit unit, an isolation buck circuit unit, a synchronous rectifier circuit unit, and an isolation output circuit unit connected in sequence; the input rectifier circuit unit is the first circuit unit, and the isolation output circuit unit is the last circuit unit. Accordingly, the relevant switches in the faulty circuit unit are controlled to connect each backup component in the faulty circuit unit to the transmission line, and to prevent the main components corresponding to each backup component in the faulty circuit unit from connecting to the transmission line, including: When the phase correction circuit unit experiences a serious malfunction, the first main switch, the second main switch, and the third main switch are all turned off, and the first backup switch, the second backup switch, and the third backup switch are all turned on. The first drive circuit is controlled to stop driving the fourth main switch, and the first drive circuit is controlled to drive the fourth backup switch. The first main series branch includes a first main switch, a first fuse, and a first inductor connected in series; the first backup series branch includes a first backup switch and a second inductor connected in series; the second main series branch includes a second main switch, a second fuse, a fourth main switch, and a first sampling resistor connected in series; the second backup series branch includes a second backup switch, a fourth backup switch, and a second sampling resistor connected in series; the third main series branch includes a third main switch, a third fuse, and a first capacitor connected in series; and the third backup series branch includes a third backup switch and a second capacitor connected in series. The first end of the first main series branch is connected to the first end of the first backup series branch, and the connection end serves as the positive input terminal of the phase correction circuit unit; the second end of the first main series branch is connected to the second end of the first backup series branch, the first end of the second main series branch, the first end of the second backup series branch, and the anode of the first diode; the second end of the second main series branch is connected to the second end of the second backup series branch, the second end of the third main series branch, and the second end of the third backup series branch, and the connection end serves as the negative terminal of the phase correction circuit unit; the cathode of the first diode is connected to the first end of the third main series branch and the first end of the third backup series branch, and the connection end serves as the positive output terminal of the phase correction circuit unit.

5. The power failure handling method of claim 4, wherein, Controlling the relevant switches in the faulty circuit unit to connect each spare component in the faulty circuit unit to the transmission line, and preventing the main components corresponding to each spare component in the faulty circuit unit from connecting to the transmission line, includes: When the isolation step-down circuit unit experiences a serious fault, the fifth main switch, the seventh main switch, the ninth main switch, the tenth main switch, and the eleventh main switch are all turned off, and the fifth backup switch, the seventh backup switch, the ninth backup switch, the tenth backup switch, and the eleventh backup switch are all turned on. The second drive circuit is controlled to stop driving the sixth main switch and the eighth main switch, and the second drive circuit is controlled to drive the sixth backup switch and the eighth backup switch. The fourth main series branch includes the fifth main switch, the eighth fuse, and the sixth main switch connected in series; the fourth backup series branch includes the fifth backup switch and the sixth backup switch connected in series; the fifth main series branch includes the seventh main switch, the fourth fuse, the eighth main switch, and the third sampling resistor connected in series; the fifth backup series branch includes the seventh backup switch, the eighth backup switch, and the fourth sampling resistor connected in series; the sixth main series branch includes the ninth main switch, the fifth fuse, and the third inductor connected in series; the sixth backup series branch includes the ninth backup switch and the fourth inductor connected in series; the seventh main series branch includes the tenth main switch, the ninth fuse, and the third capacitor connected in series; the seventh backup series branch includes the tenth backup switch and the fourth capacitor connected in series; the eighth main series branch includes the eleventh main switch, the sixth fuse, and the fifth capacitor connected in series; the eighth backup series branch includes the eleventh backup switch and the sixth capacitor connected in series. The first end of the fourth main series branch is connected to the first end of the fourth backup series branch, the first end of the seventh main series branch, and the first end of the seventh backup series branch, and the connection end serves as the positive input terminal of the isolation step-down circuit unit; the second end of the fourth main series branch is connected to the second end of the fourth backup series branch, the first end of the fifth main series branch, the first end of the fifth backup series branch, the first end of the sixth main series branch, and the first end of the sixth backup series branch; the second end of the fifth main series branch is connected to the second end of the fifth backup series branch, the second end of the eighth main series branch, and the second end of the eighth backup series branch, and the connection end serves as the negative input terminal of the isolation step-down circuit unit; The second end of the sixth main series branch is connected to the second end of the sixth backup series branch and the first end of the primary winding of the first transformer, respectively; the second end of the seventh main series branch is connected to the second end of the seventh backup series branch, the first end of the eighth main series branch, the first end of the eighth backup series branch, and the second end of the primary winding of the first transformer, respectively; the first end of the first secondary winding of the first transformer serves as the first output terminal of the isolation step-down circuit unit, and the second end of the second secondary winding of the first transformer serves as the second output terminal of the isolation step-down circuit unit; the second end of the first secondary winding is connected to the first end of the second secondary winding, and the connection terminal serves as the third output terminal of the isolation step-down circuit unit.

6. The power failure handling method of claim 4, wherein, Controlling the relevant switches in the faulty circuit unit to connect each spare component in the faulty circuit unit to the transmission line, and preventing the main components corresponding to each spare component in the faulty circuit unit from connecting to the transmission line, includes: When the synchronous rectifier circuit unit experiences a serious fault, the twelfth main switch and the fourteenth main switch are both turned off, and the twelfth backup switch and the fourteenth backup switch are both turned on. The third drive circuit is controlled to stop driving the thirteenth main switch and the fifteenth main switch, and the third drive circuit is controlled to drive the thirteenth backup switch and the fifteenth backup switch. The ninth main series branch includes a seventh fuse, a twelfth main switch, and a thirteenth main switch connected in series; the ninth backup series branch includes a twelfth backup switch and a thirteenth backup switch connected in series; the tenth main series branch includes a fifth sampling resistor, a tenth fuse, a fourteenth main switch, and a fifteenth main switch connected in series; and the tenth backup series branch includes a sixth sampling resistor, a fourteenth backup switch, and a fifteenth backup switch connected in series. The first end of the ninth main series branch is connected to the first end of the ninth backup series branch, and the connection end serves as the first input end of the synchronous rectification circuit unit to connect to the first output end of the isolation buck circuit unit; the first end of the tenth main series branch is connected to the first end of the tenth backup series branch, and the connection end serves as the second input end of the synchronous rectification circuit unit to connect to the second output end of the isolation buck circuit unit; the first end of the fifth inductor serves as the third input end of the synchronous rectification circuit unit to connect to the third output end of the isolation buck circuit unit. The second end of the ninth main series branch is connected to the second end of the ninth backup series branch, the second end of the tenth main series branch, the second end of the tenth backup series branch, and the second end of the seventh capacitor, and the connection end serves as the negative output end of the synchronous rectification circuit; the second end of the fifth inductor is connected to the first end of the seventh capacitor, and the connection end serves as the positive output end of the synchronous rectification circuit.

7. A power failure handling system characterized by The power supply includes multiple circuit units connected in sequence, and the power supply fault handling system includes: A fault status detection module is used to detect the fault status of each circuit unit in the power supply; The power transmission control switch control module is used to disconnect the faulty circuit unit from the preceding circuit unit and disconnect the end circuit unit from the load equipment when a fault is detected in any circuit unit. The critical fault detection module is used to determine whether a fault is critical based on circuit data. If so, the first processing module is triggered. The first processing module is used to control the relevant switches in the faulty circuit unit so that each spare component in the faulty circuit unit is connected to the power transmission line, and the main component corresponding to each spare component in the faulty circuit unit is not connected to the power transmission line. If not, the second processing module is triggered. The second processing module is used to perform a preset fault response operation based on the circuit data and the preset fault response rules. The self-test recovery module is used to perform a self-test of the power supply and restore the power supply to the load device when the self-test is successful. The critical fault detection module is specifically used for: When the voltage of a specified sampling resistor in any circuit unit is less than or equal to the lower voltage limit set for the sampling resistor, or greater than or equal to the upper voltage limit set for the sampling resistor, the circuit unit is determined to be seriously faulty. The second processing module is specifically used for: Based on the circuit data, it is determined that when any circuit unit overheats, the power supply fan speed should be increased. Based on the circuit data, when an overcurrent is detected in any circuit unit, the duty cycle of a specified switch in that circuit unit is adjusted to limit the current.

8. A power failure handling device characterized by comprising: include: Memory, used to store computer programs; A controller for executing the computer program to implement the steps of the power failure handling method as described in any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the steps of the power failure handling method as described in any one of claims 1 to 6.

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