Power supply fault processing method, system and device and storage medium

Abstract

The invention discloses a power supply fault processing method, system and device and a storage medium, and is applied to the technical field of power supplies, and the power supply comprises a plurality of circuit units which are connected in sequence. Comprising the following steps: when any circuit unit is detected to be faulty, disconnecting the faulty circuit unit from a previous-stage circuit unit, and disconnecting the end circuit unit from load equipment; if the fault is serious, relevant switches in the circuit unit with the fault are controlled, so that each standby component in the circuit unit with the fault is connected to the power transmission line, and the corresponding main component is not connected to the power transmission line; if the fault is not serious, executing a preset fault handling operation based on the circuit data and a preset fault handling rule; and when the power supply self-check succeeds, the power supply of the power supply to the load equipment is recovered. By applying the scheme of the invention, power supply fault processing can be conveniently and timely carried out.

Description

Technical Field

[0001] The present invention relates to the field of power supply technology, and in particular to a power supply failure processing method, system, device and storage medium. Background Art

[0002] With the rapid development of new-generation information technologies such as cloud computing, data centers, as the physical carriers for the operation of information systems in various industries, have become an indispensable key infrastructure. The power supply used by load devices such as servers and switches in data centers plays a vital role in power supply and conversion.

[0003] In current power supply designs, key operating parameters such as power supply temperature, input voltage, input current, input power, output voltage, output current, output power, and fan speed are generally monitored. If the power supply is abnormal due to external reasons such as input grid fluctuations and ambient temperature changes, the power supply triggers the power protection mechanism to shut down the power supply and reports the corresponding alarm information. When the BMC (Board Management Controller) of the server or switch system monitors the power supply fault alarm, it notifies the operation and maintenance personnel to analyze and handle the power supply abnormality. If it is a minor fault, the operation and maintenance personnel usually need to intervene to determine the cause. If there is a serious abnormality inside the power supply, such as a short circuit or open circuit of the components in the power supply, the staff needs to replace the damaged power module. The current method of relying on manual maintenance not only increases the maintenance cost, but also may cause long-term interruption of the computer room business, seriously affecting the stability and reliability of the system.

[0004] In summary, how to conveniently and timely handle power failures is a technical problem that those skilled in the art urgently need to solve. Summary of the invention

[0005] The purpose of the present invention is to provide a power failure processing method, system, device and storage medium to conveniently and timely process power failure.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

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

[0008] Detecting a fault state of each of the circuit units in the power supply;

[0009] When a fault is detected in any circuit unit, the connection between the faulty circuit unit and the previous circuit unit is disconnected, and the connection between the last circuit unit and the load device is disconnected;

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

[0011] If yes, then control the relevant switches in the circuit unit where the fault occurs, so that each spare component in the circuit unit where the fault occurs is connected to the power transmission line, and the main components corresponding to each spare component in the circuit unit where the fault occurs are not connected to the power transmission line;

[0012] If not, executing a preset fault response operation based on the circuit data and the preset fault response rule;

[0013] The power supply is self-checked, and when the self-check is successful, the power supply to the load device is restored.

[0014] On the other hand, in the power supply, a power transmission control switch is provided on the transmission line between the 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 succeeding stage;

[0015] When a fault occurs in any circuit unit, disconnecting the faulty circuit unit from the previous circuit unit, and disconnecting the last circuit unit from the load device, including:

[0016] When a fault is detected in any circuit unit, the power transmission control switch at the previous stage of the faulty circuit unit is turned off, and the power transmission control switch between the last circuit unit and the load device is turned off;

[0017] When the self-test succeeds, restoring the power supply of the power supply to the load device includes:

[0018] When the self-test is successful, each power transmission control switch is closed, and the power supply to the load device is restored.

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

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

[0021] On the other hand, based on the circuit data and the preset fault response rules, a preset fault response operation is performed, including:

[0022] When it is determined based on the circuit data that any circuit unit is overheated, the speed of the power supply fan is increased.

[0023] On the other hand, based on the circuit data and the preset fault response rules, a preset fault response operation is performed, including:

[0024] When it is determined based on the circuit data that any circuit unit has an overcurrent, the duty cycle of a specified switch in the circuit unit is adjusted to limit the current.

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

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

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

[0028] Accordingly, controlling the relevant switches in the circuit unit having a fault so that each spare component in the circuit unit having a fault is connected to the transmission line, and the main components corresponding to each spare component in the circuit unit having a fault are not connected to the transmission line, includes:

[0029] 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, the first standby switch, the second standby switch and the third standby 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 standby switch;

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

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

[0032] On the other hand, controlling the relevant switches in the circuit unit having a fault so that each spare component in the circuit unit having a fault is connected to the transmission line, and the main components corresponding to each spare component in the circuit unit having a fault are not connected to the transmission line, comprises:

[0033] 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, the fifth standby switch, the seventh standby switch, the ninth standby switch, the tenth standby switch and the eleventh standby 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 standby switch and the eighth standby switch;

[0034] Wherein, the fourth main series branch includes the fifth main switch, the eighth fuse and the sixth main switch connected in series; the fourth standby series branch includes the fifth standby switch and the sixth standby 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 standby series branch includes the seventh standby switch, the eighth standby 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 standby series branch includes the ninth standby 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 standby series branch includes the tenth standby 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 standby series branch includes the eleventh standby switch and the sixth capacitor connected in series;

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

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

[0037] On the other hand, controlling the relevant switches in the circuit unit having a fault so that each spare component in the circuit unit having a fault is connected to the transmission line, and the main components corresponding to each spare component in the circuit unit having a fault are not connected to the transmission line, comprises:

[0038] When a serious fault occurs in the synchronous rectification circuit unit, the twelfth main switch and the fourteenth main switch are both turned off, the twelfth standby switch and the fourteenth standby switch are both turned on, the third driving circuit is controlled to stop driving the thirteenth main switch and the fifteenth main switch, and the third driving circuit is controlled to drive the thirteenth standby switch and the fifteenth standby switch;

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

[0040] 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 the first output end of the isolated 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 the second output end of the isolated buck circuit unit; the first end of the fifth inductor serves as the third input end of the synchronous rectification circuit unit to connect the third output end of the isolated buck circuit unit;

[0041] The second end of the ninth main series branch is respectively 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 processing system, wherein the power supply includes a plurality of circuit units connected in sequence, and the power supply fault processing system includes:

[0043] A fault status detection module, 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 previous circuit unit and disconnect the last circuit unit from the load device when a fault is detected in any circuit unit;

[0045] A serious fault judgment module, used to judge whether it is a serious fault based on circuit data;

[0046] If yes, triggering a first processing module, the first processing module is used to control relevant switches in the circuit unit with the fault, so that each spare component in the circuit unit with the fault is connected to the transmission line, and the main components corresponding to each spare component in the circuit unit with the fault are not connected to the transmission line;

[0047] If not, triggering a second processing module, the second processing module is used to perform a preset fault response operation based on the circuit data and a preset fault response rule;

[0048] The self-check recovery module is used to perform a self-check on the power supply and, when the self-check is successful, to restore the power supply from the power supply to the load device.

[0049] In a third aspect, the present invention provides a power failure processing device, comprising:

[0050] Memory for storing computer programs;

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

[0052] In a fourth aspect, the present invention provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the steps of the power failure handling method as described above are implemented.

[0053] By applying the technical solution provided by the embodiment of the present invention, the power supply includes a plurality of circuit units connected in sequence. If any circuit unit is detected to have a fault, the connection between the faulty circuit unit and the previous circuit unit will be directly disconnected, and the connection between the last circuit unit and the load device will be disconnected, so as to effectively avoid the expansion of the fault and prevent the faulty power supply from causing damage to the load device. Further, in the solution of the present application, it will automatically determine whether it is a serious fault based on the circuit data. If not, it means that it is only a minor fault. Then, based on the circuit data and the preset fault response rules, the preset fault response operation can be performed to deal with such a minor fault. Subsequently, the power supply can be self-checked. When the self-check is successful, it means that the power supply can resume normal operation, and then close each power transmission control switch, and restore the power supply to the load device. If it is determined to be a serious fault, it means that the circuit unit with the fault may have damaged components. In this regard, in the solution of the present application, the relevant switches in the circuit unit with the fault will be controlled so that each spare component in the circuit unit with the fault is connected to the transmission line, and the main components corresponding to each spare component in the circuit unit with the fault are not connected to the transmission line. That is to say, in the present application, spare parts are provided for the easily damaged components in the circuit unit, and these spare parts can be connected to the power transmission line and the original main parts can be disconnected in case of serious faults, so as to realize automatic repair of serious faults. After that, the power supply can also be self-checked. If the self-check is successful, it means that the power supply can resume normal operation, and then resume the power supply to the load device.

[0054] It can be seen that the present application scheme effectively prevents the expansion of the fault and prevents the faulty power supply from causing damage to the load equipment by controlling the power supply when the power supply fails. In addition, corresponding countermeasures are adopted according to the severity of the fault, and no staff participation is required, thereby reducing maintenance costs and not causing long-term business interruptions, thereby ensuring the stability and reliability of the system. In summary, the present application scheme can handle power failures conveniently and promptly. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0056] Figure 1 A flowchart of a method for handling power failure provided by a specific embodiment of the present invention;

[0057] Figure 2 is a schematic diagram of a circuit unit included in a power supply in a specific implementation manner;

[0058] Figure 3 A schematic diagram of the principle of power failure processing in a specific implementation manner;

[0059] Figure 4 is a structural schematic diagram of a phase correction circuit unit in a specific implementation manner;

[0060] Figure 5 It is a structural schematic diagram of an isolated step-down circuit unit in a specific implementation manner;

[0061] Figure 6 A schematic diagram of the structure of a synchronous rectification circuit unit in a specific implementation manner;

[0062] Figure 7 A schematic diagram of the structure of a power failure processing system provided by a specific implementation mode of the present invention;

[0063] Figure 8 A schematic diagram of the structure of a power failure processing device provided by a specific embodiment of the present invention;

[0064] Fig. 9 The present invention is a schematic diagram of the structure of a computer-readable storage medium. DETAILED DESCRIPTION

[0065] The core of the present invention is to provide a power failure processing method, system, device and storage medium, which can conveniently and timely process power failure.

[0066] In order to enable those skilled in the art to better understand the scheme of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0067] Please refer to Figure 1 , Figure 1 The following is a flowchart of a method for handling power failures provided by a specific embodiment of the present invention. The method for handling power failures 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 the scheme of the present application, the power supply includes a plurality of circuit units connected in sequence. In order to effectively avoid the expansion of the fault when a fault occurs, and to avoid the faulty power supply from causing damage to the load device. In the scheme of the present application, when a fault is detected in any circuit unit later, it is necessary to disconnect the connection between the faulty circuit unit and the previous circuit unit, and disconnect the connection between the last circuit unit and the load device. In order to achieve this purpose, a certain number of power transmission control switches can usually be set in the power supply. For example, in a specific implementation, in the power supply, a power transmission control switch can be set on the transmission line between adjacent circuit units, a power transmission control switch can be set on the transmission line between the first circuit unit and the grid side of the previous stage, and a power transmission control switch can be set on the transmission line between the last circuit unit and the load device of the next stage, thereby ensuring the flexibility of control.

[0070] See also Figure 2 , is a schematic diagram of circuit units included in a specific implementation mode of a power supply. In this specific implementation mode, the power supply includes an input rectification circuit unit, a phase correction circuit unit, an isolated step-down circuit unit, a synchronous rectification circuit unit and an isolated output circuit unit connected in sequence; the input rectification circuit unit is the first circuit unit, and the isolated output circuit unit is the last circuit unit. This implementation mode is also a power supply structure commonly used in practical applications.

[0071] The input rectifier circuit unit is the first circuit unit, and a transmission control switch is provided on the transmission line between the input rectifier circuit unit and the grid side of the previous stage. Figure 2 The input rectifier circuit unit can receive high voltage input from the grid side and then perform rectification. The transmission control switch S1 is also the transmission control switch of the previous stage of the input rectifier circuit unit.

[0072] The phase correction circuit unit is adjacent to the input rectification circuit unit and is the second circuit unit for performing phase correction, for example, PFC phase correction. A power transmission control switch is provided on the transmission line between the phase correction circuit unit and the input rectification circuit unit. Figure 2 The power transmission control switch S2 is recorded in the figure, and the power transmission control switch S2 is also the power transmission control switch of the previous stage of the phase correction circuit unit.

[0073] The isolation step-down circuit unit is adjacent to the phase correction circuit unit and is the third circuit unit. It is used to step down the voltage and isolate the high-voltage side from the low-voltage side to ensure the safety and reliability of the circuit. A power transmission control switch is set on the transmission line between the isolation step-down circuit unit and the phase correction circuit unit. Figure 2 The power transmission control switch S3 is recorded in the figure, and the power transmission control switch S3 is also the power transmission control switch of the previous stage of the phase isolation buck circuit unit.

[0074] The synchronous rectification circuit unit is adjacent to the isolation buck circuit unit and is the fourth circuit unit, which is used to rectify the output of the isolation buck circuit unit. A transmission control switch is provided on the transmission line between the synchronous rectification circuit unit and the isolation buck circuit unit. Figure 2 The power transmission control switch S4 is recorded in the figure, and the power transmission control switch S4 is also the power transmission control switch of the previous stage of the synchronous rectification circuit unit.

[0075] The isolated output circuit unit is adjacent to the synchronous rectification circuit unit and is the fifth circuit unit, i.e. the last circuit unit, which is used to supply power to the load device and ensure the circuit reliability through isolation. A power transmission control switch is provided on the transmission line between the isolated output circuit unit and the synchronous rectification circuit unit. Figure 2 The power transmission control switch S5 is recorded in the figure, and the power transmission control switch S5 is also the power transmission control switch of the previous stage of the isolation output circuit unit.

[0076] A power transmission control switch is also required on the transmission line between the isolated output circuit unit and the subsequent load equipment. Figure 2 It is recorded 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 parameter items detected and the specific detection method used can be set and adjusted according to actual needs. The fault status of each circuit unit can be determined through these detected circuit parameter items. For example, the key circuit parameters such as voltage, current, temperature, etc. of each circuit unit can be detected. When the circuit parameters are detected beyond the normal range, it can be determined that the corresponding circuit unit has a fault such as overvoltage, undervoltage, overcurrent, short circuit, overtemperature, etc.

[0078] Step S102: when it is detected that any circuit unit fails, the connection between the failed circuit unit and the previous circuit unit is disconnected, and the connection between the last circuit unit and the load device is disconnected.

[0079] When a fault is detected in any circuit unit, in order to effectively prevent the fault from expanding and prevent the faulty power supply from damaging the load device, the connection between the faulty circuit unit and the previous circuit unit will be immediately disconnected, and the connection between the last circuit unit and the load device will be disconnected. For example, in a specific scenario, the power transmission control switch of the previous stage of the faulty circuit unit can be turned off, and the power transmission control switch between the last circuit unit and the load device can be turned off.

[0080] See also Figure 3 , is a schematic diagram of the principle of power failure processing in a specific implementation method. Figure 3 In the example, if a fault is detected in the phase correction circuit unit, the power transmission control switch S2 of the previous stage of the phase correction circuit unit will be turned off to prevent the fault from expanding. In addition, the power transmission control switch S6 between the isolation output circuit unit and the load device will be turned off, that is, the power supply of the load device is cut off to protect the load device.

[0081] It should also be noted that no matter which circuit parameters are used to implement circuit unit fault judgment, in order to avoid sampling abnormalities caused by interference and other reasons, the sampled circuit parameters are usually filtered, or it is determined that the sampled circuit parameters are actually sampled data rather than interference data, and only then will the circuit unit fault judgment be implemented.

[0082] Step S103: Based on the circuit data, determine whether it is a serious fault. If yes, perform the operation of step S104, if not, perform the operation of step S105.

[0083] There may be multiple specific implementations of determining whether a fault is serious, which may be set and adjusted in advance.

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

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

[0086] This implementation method takes into account that each circuit unit is usually provided with a sampling resistor. If a branch where a sampling resistor is located is located on a transmission line, the voltage of the sampling resistor should be within the normal range. If it is slightly deviated from the normal range, it may be a slight abnormality, but if the voltage of the sampling resistor 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, it means that the voltage of the sampling resistor has seriously deviated from the normal range, and the circuit unit can be directly determined to be a serious fault. The specific values ​​of the lower voltage limit and the upper voltage limit set for each designated sampling resistor can be set and adjusted according to the actual circuit structure.

[0087] For easier understanding, please refer to Figure 4 , is a schematic diagram of the structure of a phase correction circuit unit in a specific implementation manner, for example Figure 4 The phase correction circuit unit currently uses all main components, so the first sampling resistor R1 is the current designated sampling resistor of the phase correction circuit unit. Of course, in some circuit units, there can be multiple designated sampling resistors at the same time. And it can be understood that if Figure 4 The phase correction circuit unit has a serious fault and has been switched to various backup components. At this time, the second sampling resistor R2 is the current designated sampling resistor of the phase correction circuit unit.

[0088] Figure 4 In the embodiment, the fourth main switch A4 is the main switch power MOS tube of the phase correction circuit unit, and is the component with the highest failure probability in the phase correction circuit. For example, if the fourth main switch A4 fails due to a short circuit, its short circuit instantaneous current is greater than the fusing value of the second fuse, causing the second fuse to blow. Therefore, the branch where the fourth main switch A4 is located will not continue to short-circuit due to the short-circuit failure of the fourth main switch A4, that is, due to the setting of the second fuse, the fourth main switch A4 is isolated due to the disconnection of the second fuse. If the fourth main switch A4 fails due to an open circuit instead of a short circuit, the branch of the fourth main switch A4 will also be isolated and disconnected due to the open circuit of the fourth main switch A4.

[0089] It can be seen that no matter whether the fourth main switch A4 is short-circuited or open-circuited, the branch where it is located will be automatically disconnected and isolated, so at this time, the current passing 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 voltage lower limit set for the first sampling resistor R1, and it can be determined that the phase correction circuit unit is a serious fault.

[0090] In addition, it should be noted that in this embodiment, whether a serious fault has occurred is determined based on the parameter item of the voltage of the sampling resistor. In other embodiments, whether a serious fault has occurred can be determined based on more circuit parameter items. They can be set and adjusted according to actual needs, which does not affect the implementation of the present invention.

[0091] Step S104: Control 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 main components corresponding to each spare component in the faulty circuit unit are not connected to the power transmission line.

[0092] For circuit units with serious faults, since serious faults are usually line hardware damage or irreversible faults, the present application scheme will directly switch components, that is, by controlling the relevant switches in the circuit unit, so that its various backup components are connected to the transmission line, and the corresponding main components are not connected to the transmission line.

[0093] In a specific embodiment of the present invention, the power supply includes an input rectification circuit unit, a phase correction circuit unit, an isolated step-down circuit unit, a synchronous rectification circuit unit and an isolated output circuit unit connected in sequence; the input rectification circuit unit is the first circuit unit, and the isolated 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, the first standby switch B1, the second standby switch B2 and the third standby 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 standby switch B4.

[0096] In this embodiment, when a serious fault occurs in the phase correction circuit unit, the phase correction circuit unit can work normally again 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 standby series branch includes a first standby 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 standby series branch includes a second standby switch B2, a fourth standby 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 standby series branch includes a third standby 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 standby series branch, and the connection end serves as the positive input end of the phase correction circuit unit; the second end of the first main series branch is respectively connected to the second end of the first standby series branch, the first end of the second main series branch, the first end of the second standby series branch and the anode of the first diode D1; the second end of the second main series branch is respectively connected to the second end of the second standby series branch, the second end of the third main series branch and the second end of the third standby 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 respectively connected to the first end of the third main series branch and the first end of the third standby series branch, and the connection end serves as the positive output end of the phase correction circuit unit.

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

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

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

[0102] In this implementation, before a serious failure 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, the first backup switch B1, the second backup switch B2 and the third backup switch B3 are all in the off state, and the first drive circuit specifically drives and controls the fourth main switch A4 under the control of the controller. Figure 4 The first drive circuit is not shown. After 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 can be turned off, and the first standby switch B1, the second standby switch B2 and the third standby switch B3 can be turned on, and the fourth standby switch B4 can be driven and controlled by the first drive circuit, so that the various standby components of the phase correction circuit unit are switched to allow the phase correction circuit unit to continue to work normally. In this embodiment, the fourth main switch A4 and the fourth standby switch B4 are usually MOS tubes, and the remaining main and standby switches can usually be implemented based on 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 MOS tubes, inductors and capacitors in the phase correction circuit unit. This is because the phase correction circuit unit is provided on the high-voltage side and in the event of a serious fault, usually one or more of these three components are damaged.

[0104] It should be noted that in this embodiment, a first fuse F1, a second fuse F2 and a third fuse F3 are provided, which are respectively connected in series with the first inductor L1, the fourth main switch A4 and the first capacitor C1, so as to effectively disconnect the corresponding branch in time when any of the three main components is overcurrent, so as to avoid the expansion of the fault. In addition, the branch where the corresponding spare components are located is not provided with a fuse, which can effectively reduce the cost, because in actual applications, it is rare that the circuit unit immediately fails again after switching to the spare components. Of course, if there is a need in other occasions, a fuse can also be provided in the branch where the relevant spare components are located.

[0105] In addition, it is understandable that in actual applications, although the circuit unit can resume normal operation by switching to backup components, the relevant log information is usually still sent to the staff so that the staff can repair or replace the main components and fuses in the related circuit units that were previously damaged when the business is not affected in the future, such as when the server and its power supply are periodically inspected, so that each circuit unit can be restored to a state where all components are normal and each main component is used by default to work.

[0106] Step S105: Execute a preset fault response operation based on the circuit data and the preset fault response rule.

[0107] If it is determined that the circuit unit has a non-serious fault, that is, a minor fault, which is usually temporary, there is no need to switch to backup components. Instead, the preset fault response operation will be executed based on the circuit data and the preset fault response rules to effectively deal with the minor fault. Of course, the specific type of minor fault is different, and the fault response operation adopted will be different.

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

[0109] Whether it is a serious fault or a non-serious fault, before restoring the power supply to the load device, it is necessary to first perform a self-test of the power supply, for example, the relevant circuit parameters can be detected. When all circuit parameters are normal, it can be determined that the self-test is successful. At this time, the power supply to the load device can be restored to achieve self-recovery of the fault. For example, in a specific scenario, when the self-test is successful, each power transmission control switch can be closed to restore the power supply to the load device. In addition, in some cases, some load devices are more important devices such as servers, and dual power supply redundancy is usually set. At this time, during the period when the power supply described in this application cannot power the load device, the backup power supply can be used to power the load device. After the power supply of this application automatically recovers from the fault, the power supply of this application can be used again to power the load device.

[0110] In a specific implementation of the present invention, step S105 may include:

[0111] When it is determined based on the circuit data that any circuit unit is overheated, the speed of the power supply fan is increased.

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

[0113] In a specific implementation of the present invention, step S105 may include:

[0114] When it is determined based on the circuit data that any circuit unit has an overcurrent, the duty cycle of a specified switch in the circuit unit is adjusted to limit the current.

[0115] This implementation method takes into account that for non-serious faults, overcurrent is also a common situation. Although the current is too large at this time, the relevant components are not damaged. If it is handled in time, the situation can be effectively solved. Specifically, such a situation is usually caused by the current load being too large, and the current limitation can be achieved by adjusting the duty cycle of the specified switch in the circuit unit. For example, in a specific scenario, the duty cycle of the specified switch in the circuit unit is reduced. After the self-test is completed, the overcurrent situation will not continue to occur in the subsequent operation process. For example, in a specific scenario, the duty cycle of the specified switch in the circuit unit is set to a state that allows it to be reduced to 0. After the self-test is completed, in the subsequent operation process, once a carrier cycle detects that the current is high or there is a trend of overcurrent, the duty cycle of the specified switch in the circuit unit will be set to 0 in the next carrier cycle to effectively avoid overcurrent.

[0116] In a specific implementation of the present invention, it may also include: when the controller detects a fault in itself, the controller automatically restarts.

[0117] This implementation method takes into account that in addition to component failures on the power transmission line, the controller that controls the power supply may also fail. Most controller failures are program code crashes and control logic anomalies. Such failures can usually be resolved by restarting the controller. Therefore, in this implementation method, when the controller detects a fault in itself, it can automatically restart to try to resolve the fault. For example, when the controller detects that a program in itself has crashed, it can be forced to restart.

[0118] In a specific embodiment of the present invention, it may also include: when the controller detects a grid voltage fluctuation, filtering the grid voltage and filtering out the grid voltage fluctuation alarm. This embodiment takes into account that grid voltage fluctuations are also common, and are usually short-term fluctuations. In order to avoid problems with the controller's related control logic based on the grid voltage, the grid voltage can be filtered in software, such as by taking an average value, etc., so as not to affect the controller's related control logic based on the grid voltage. Moreover, for such short-term fluctuations, it is impossible to completely avoid such situations through filtering circuits in hardware. Therefore, filtering the grid voltage directly in software can avoid the impact caused by short-term fluctuations in the grid voltage without increasing the circuit cost.

[0119] In a specific implementation 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, the fifth standby switch B5, the seventh standby switch B7, the ninth standby switch B9, the tenth standby switch B10 and the eleventh standby 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 standby switch B6 and the eighth standby switch B8;

[0121] Among them, see Figure 5 , Figure 5 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 standby series branch includes a fifth standby switch B5 and a sixth standby 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 standby series branch includes a seventh standby switch B7, an eighth standby 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 F4, an eighth main switch A8 and a fourth sampling resistor R4 connected in series; the The sixth standby series branch includes a ninth standby switch B9 and a fourth inductor L4 connected in series; the seventh main series branch includes a tenth main switch A10, a ninth fuse F9 and a third capacitor C3 connected in series; the seventh standby series branch includes a tenth standby switch B10 and a fourth capacitor C4 connected in series; the eighth main series branch includes an eleventh main switch A11, a sixth fuse F6 and a fifth capacitor C5 connected in series; the eighth standby series branch includes an eleventh standby switch B11 and a sixth capacitor C6 connected in series;

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

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

[0124] In this embodiment, when a serious fault occurs in the isolation step-down circuit unit, the fifth standby switch B5, the seventh standby switch B7, the ninth standby switch B9, the tenth standby switch B10 and the eleventh standby switch B11 are all turned on, so that the corresponding branch is connected to the transmission line, and the sixth standby switch B6 and the eighth standby switch B8 are driven, so that the isolation step-down circuit unit can work normally again. In this embodiment, the sixth main switch A6, the eighth main switch A8, the sixth standby switch B6 and the eighth standby switch B8 are usually MOS tubes, and the remaining main and standby switches can usually be implemented based on relays.

[0125] It can be seen from the circuit structure that in this implementation, spare components are set for the power MOS tube, inductor and capacitor in the isolated buck circuit unit. This is because the isolated buck circuit unit is located on the high-voltage side. When a serious fault occurs, usually one or more of these three components are damaged.

[0126] In this embodiment, a fourth fuse F4, a fifth fuse F5, a sixth fuse F6, an eighth fuse F8 and a ninth fuse F9 are provided, which are respectively 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, so as to effectively disconnect the corresponding branch in time when any one of the five main components is overcurrent, so as to avoid the expansion of the fault. In addition, the branch where the corresponding spare components are located is not provided with a fuse, which can effectively reduce the cost. Similarly to the above, in actual applications, it is rare that the circuit unit has a serious fault again after switching to the spare components. Of course, if necessary in other occasions, a fuse can also be provided in the branch where the relevant spare components are located.

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

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

[0129] See also Figure 6 , Figure 6 It is a structural schematic diagram of an isolated step-down circuit unit in a specific implementation. 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 standby series branch includes a twelfth standby switch B12 and a thirteenth standby 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 ninth standby series branch includes a sixth sampling resistor R6, a fourteenth standby switch B14, and a fifteenth standby 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 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 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 the third output end of the isolation buck circuit unit;

[0131] The second end of the ninth main series branch is respectively 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 connecting end serves as the negative output end of the synchronous rectification circuit; the second end of the fifth inductor L5 is connected to the first end of the seventh capacitor C7 and the connecting end serves as the positive output end of the synchronous rectification circuit.

[0132] In this embodiment, when a serious fault occurs in the synchronous rectification circuit unit, the twelfth backup switch B12 and the fourteenth backup switch B14 are turned on, so that the corresponding branch is connected to the transmission line, and the thirteenth backup switch B13 and the fifteenth backup switch B15 are driven, so that the synchronous rectification circuit unit can work normally again. In this embodiment, the driving of the thirteenth main switch A13 and the fifteenth main switch A15, the thirteenth backup switch B13 and the fifteenth backup switch B15 are usually MOS tubes, and the remaining main and backup switches can usually be implemented based on relays.

[0133] It can be seen from the circuit structure that in this implementation, spare components are set for the power MOS tubes 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 of the power MOS tubes are damaged, and the inductor and capacitor are usually not damaged. Therefore, there is no need to set spare components for the inductor and capacitor in the synchronous rectification circuit unit.

[0134] In this embodiment, the seventh fuse F7 and the tenth fuse F10 are provided, so that when the branch where the twelfth main switch A12 or the fourteenth main switch A14 is located is overcurrent, the branch can be disconnected in time to avoid the expansion of the fault. In addition, the branch where the corresponding spare components are located is not provided with a fuse, which can effectively reduce the cost. Similarly to the above, in actual applications, it is rare that the circuit unit has a serious fault again after switching to the spare components. Of course, if there is a need in other occasions, a fuse can also be provided in the branch where the relevant spare components are located.

[0135] By applying the technical solution provided by the embodiment of the present invention, the power supply includes a plurality of circuit units connected in sequence. If any circuit unit is detected to have a fault, the connection between the faulty circuit unit and the previous circuit unit will be directly disconnected, and the connection between the last circuit unit and the load device will be disconnected, so as to effectively avoid the expansion of the fault and prevent the faulty power supply from causing damage to the load device. Further, in the solution of the present application, it will automatically determine whether it is a serious fault based on the circuit data. If not, it means that it is only a minor fault. Then, based on the circuit data and the preset fault response rules, the preset fault response operation can be performed to deal with such a minor fault. Subsequently, the power supply can be self-checked. When the self-check is successful, it means that the power supply can resume normal operation, and then the power supply to the load device can be restored. If it is judged to be a serious fault, it means that the circuit unit with the fault may have damaged components. In this regard, in the solution of the present application, the relevant switches in the circuit unit with the fault will be controlled so that each spare component in the circuit unit with the fault is connected to the transmission line, and the main components corresponding to each spare component in the circuit unit with the fault are not connected to the transmission line. That is to say, in the present application, spare parts are provided for the easily damaged components in the circuit unit, and these spare parts can be connected to the power transmission line and the original main parts can be disconnected in case of serious faults, so as to realize automatic repair of serious faults. After that, the power supply can also be self-checked. When the self-check is successful, it means that the power supply can resume normal operation, and then close each power transmission control switch, and resume the power supply to the load equipment.

[0136] It can be seen that the present application scheme effectively prevents the expansion of the fault and prevents the faulty power supply from causing damage to the load equipment by controlling the power supply when the power supply fails. In addition, corresponding countermeasures are adopted according to the severity of the fault, and no staff participation is required, thereby reducing maintenance costs and not causing long-term business interruptions, thereby ensuring the stability and reliability of the system. In summary, the present application scheme can handle power failures conveniently and promptly.

[0137] Corresponding to the above method embodiment, an embodiment of the present invention further provides a power failure processing system, which can be referred to in correspondence with the above.

[0138] See also Figure 7 FIG. 1 is a schematic diagram of a power supply fault processing system in the present invention. The power supply includes a plurality of circuit units connected in sequence. The power supply fault processing system includes:

[0139] A 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 faulty circuit unit from the previous circuit unit and disconnect the last circuit unit from the load device when a fault is detected in any circuit unit;

[0141] A serious fault judgment module 703 is used to judge whether it is a serious fault based on the circuit data;

[0142] If yes, the first processing module 704 is triggered, and the first processing module 704 is used to control the relevant switches in the circuit unit with the fault, so that each spare component in the circuit unit with the fault is connected to the transmission line, and the main components corresponding to each spare component in the circuit unit with the fault are not connected to the transmission line;

[0143] If not, the second processing module 705 is triggered, and the second processing module 705 is used to perform a preset fault response operation based on the circuit data and the preset fault response rule;

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

[0145] In a specific embodiment of the present invention, 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 succeeding 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 previous stage of the faulty circuit unit, and turn off the power transmission control switch between the last circuit unit and the load device;

[0147] The self-check and recovery module 706 is specifically used to: perform a self-check of the power supply, and when the self-check is successful, close each power transmission control switch and restore the power supply of the power supply to the load device.

[0148] In a specific implementation of the present invention, the serious fault judgment module 703 is specifically used to:

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

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

[0151] When it is determined based on the circuit data that any circuit unit is overheated, the speed of the power supply fan is increased.

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

[0153] When it is determined based on the circuit data that any circuit unit has an overcurrent, the duty cycle of a specified switch in the circuit unit is adjusted to limit the current.

[0154] In a specific embodiment of the present invention, a restart module is also included, which is used to:

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

[0156] In a specific embodiment of the present invention, the power supply includes an input rectifier circuit unit, a phase correction circuit unit, an isolated buck circuit unit, a synchronous rectifier circuit unit and an isolated output circuit unit connected in sequence; the input rectifier circuit unit is the first circuit unit, and the isolated 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, the first standby switch, the second standby switch and the third standby 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 standby switch;

[0159] In a specific implementation of the present invention, the first processing module 704 is specifically used to:

[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, the fifth standby switch, the seventh standby switch, the ninth standby switch, the tenth standby switch and the eleventh standby 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 standby switch and the eighth standby switch;

[0161] In a specific implementation of the present invention, the first processing module 704 is specifically used to:

[0162] When a serious fault occurs in the synchronous rectification circuit unit, the twelfth main switch and the fourteenth main switch are both turned off, 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.

[0163] Corresponding to the above method and system embodiments, embodiments of the present invention further provide a power failure processing device, a computer-readable storage medium, and a computer program product, which can be referred to in correspondence with the above.

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

[0165] Memory 801, used for storing computer programs;

[0166] The processor 802 is configured to execute a computer program to implement the steps of the power failure processing method in any of the above embodiments.

[0167] The computer program product includes a computer program / instruction, and when the computer program / instruction is executed by a processor, the steps of the power failure processing method in any of the above embodiments are implemented.

[0168] See also Fig. 9 The computer readable storage medium 90 stores a computer program 91, and when the computer program 91 is executed by the processor, the steps of the power failure processing method in any of the above embodiments are implemented. The computer readable storage medium 90 mentioned here includes RAM (Random Access Memory), memory, ROM (Read-Only Memory), EEPROM (Electrically Erasable Programmable Read Only Memory), register, hard disk, removable disk, or any other form of storage medium known in the technical field.

[0169] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0170] Professionals may further realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in the above description according to the function. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention, and the description of the above embodiments is only used to help understand the technical solution and its core idea of ​​the present invention. It should be pointed out that for ordinary technicians in the technical field, without departing from the principle of the present invention, the present invention can also be improved and modified in a number of ways, and these improvements and modifications also fall within the scope of protection of the present invention.

Claims

1. A method for handling power failure, characterized in that: The power supply includes a plurality of circuit units connected in sequence; The power failure processing method is applied to a controller, comprising: Detecting a fault state of each of the circuit units in the power supply; When a fault is detected in any circuit unit, the connection between the faulty circuit unit and the previous circuit unit is disconnected, and the connection between the last circuit unit and the load device is disconnected; Based on the circuit data, determine whether it is a serious fault; If yes, then control the relevant switches in the circuit unit where the fault occurs, so that each spare component in the circuit unit where the fault occurs is connected to the power transmission line, and the main components corresponding to each spare component in the circuit unit where the fault occurs are not connected to the power transmission line; If not, executing a preset fault response operation based on the circuit data and the preset fault response rule; The power supply is self-checked, and when the self-check is successful, the power supply to the load device is restored.

2. The power failure processing method according to claim 1, characterized in that: 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 succeeding stage; When a fault occurs in any circuit unit, disconnecting the faulty circuit unit from the previous circuit unit, and disconnecting the last circuit unit from the load device, including: When a fault is detected in any circuit unit, the power transmission control switch at the previous stage of the faulty circuit unit is turned off, and the power transmission control switch between the last circuit unit and the load device is turned off; When the self-test succeeds, restoring the power supply of the power supply to the load device includes: When the self-test is successful, each power transmission control switch is closed, and the power supply to the load device is restored.

3. The power failure processing method according to claim 1, characterized in that: Based on the circuit data, determine whether it is a serious fault, including: When the voltage of a designated sampling resistor in any circuit unit is less than or equal to a lower voltage limit set for the sampling resistor, or greater than or equal to an upper voltage limit set for the sampling resistor, the circuit unit is determined to be seriously faulty.

4. The power failure processing method according to claim 1, characterized in that: Based on the circuit data and the preset fault response rules, a preset fault response operation is performed, including: When it is determined based on the circuit data that any circuit unit is overheated, the speed of the power supply fan is increased.

5. The power failure processing method according to claim 1, characterized in that: Based on the circuit data and the preset fault response rules, a preset fault response operation is performed, including: When it is determined based on the circuit data that any circuit unit has an overcurrent, the duty cycle of a specified switch in the circuit unit is adjusted to limit the current.

6. The power failure processing method according to claim 1, characterized in that: Also includes: When the controller detects a fault, the controller automatically restarts.

7. The power failure processing method according to any one of claims 1 to 6, characterized in that: The power supply includes an input rectifier circuit unit, a phase correction circuit unit, an isolated buck circuit unit, a synchronous rectifier circuit unit and an isolated output circuit unit which are connected in sequence; the input rectifier circuit unit is the first circuit unit, and the isolated output circuit unit is the last circuit unit; Accordingly, controlling the relevant switches in the circuit unit having a fault so that each spare component in the circuit unit having a fault is connected to the transmission line, and the main components corresponding to each spare component in the circuit unit having a fault are not connected to the transmission line, includes: 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, the first standby switch, the second standby switch and the third standby 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 standby switch; The first main series branch includes the first main switch, the first fuse and the first inductor connected in series; the first standby series branch includes the first standby switch and the second inductor connected in series; the second main series branch includes the second main switch, the second fuse, the fourth main switch and the first sampling resistor connected in series; the second standby series branch includes the second standby switch, the fourth standby switch and the second sampling resistor connected in series; the third main series branch includes the third main switch, the third fuse and the first capacitor connected in series; the third standby series branch includes the third standby switch and the second capacitor connected in series; The first end of the first main series branch is connected to the first end of the first standby series branch, and the connection end serves as the positive input end of the phase correction circuit unit; the second end of the first main series branch is respectively connected to the second end of the first standby series branch, the first end of the second main series branch, the first end of the second standby series branch and the anode of the first diode; the second end of the second main series branch is respectively connected to the second end of the second standby series branch, the second end of the third main series branch and the second end of the third standby series branch, and the connection end serves as the negative terminal of the phase correction circuit unit; the cathode of the first diode is respectively connected to the first end of the third main series branch and the first end of the third standby series branch, and the connection end serves as the positive output end of the phase correction circuit unit.

8. The method for handling power failure according to claim 7, characterized in that: Controlling the relevant switches in the circuit unit having a fault so that each spare component in the circuit unit having a fault is connected to the transmission line, and main components corresponding to each spare component in the circuit unit having a fault are not connected to the transmission line, comprising: 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, the fifth standby switch, the seventh standby switch, the ninth standby switch, the tenth standby switch and the eleventh standby 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 standby switch and the eighth standby switch; Wherein, the fourth main series branch includes the fifth main switch, the eighth fuse and the sixth main switch connected in series; the fourth standby series branch includes the fifth standby switch and the sixth standby 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 standby series branch includes the seventh standby switch, the eighth standby 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 standby series branch includes the ninth standby 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 standby series branch includes the tenth standby 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 standby series branch includes the eleventh standby switch and the sixth capacitor connected in series; The first end of the fourth main series branch is respectively connected to the first end of the fourth standby series branch, the first end of the seventh main series branch and the first end of the seventh standby series branch, and the connection end serves as the positive input end of the isolation step-down circuit unit; the second end of the fourth main series branch is respectively connected to the second end of the fourth standby series branch, the first end of the fifth main series branch, the first end of the fifth standby series branch, the first end of the sixth main series branch and the first end of the sixth standby series branch; the second end of the fifth main series branch is respectively connected to the second end of the fifth standby series branch, the second end of the eighth main series branch and the second end of the eighth standby series branch, and the connection end serves as the negative input end of the isolation step-down circuit unit; The second end of the sixth main series branch is respectively connected to the second end of the sixth standby series branch and the first end of the primary winding of the first transformer; the second end of the seventh main series branch is respectively connected to the second end of the seventh standby series branch, the first end of the eighth main series branch, the first end of the eighth standby series branch and the second end of the primary winding of the first transformer; the first end of the first secondary winding of the first transformer serves as the first output end 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 end 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 end serves as the third output end of the isolation step-down circuit unit.

9. The method for handling power failure according to claim 7, characterized in that: Controlling the relevant switches in the circuit unit having a fault so that each spare component in the circuit unit having a fault is connected to the transmission line, and main components corresponding to each spare component in the circuit unit having a fault are not connected to the transmission line, comprising: When a serious fault occurs in the synchronous rectification circuit unit, the twelfth main switch and the fourteenth main switch are both turned off, the twelfth standby switch and the fourteenth standby switch are both turned on, the third driving circuit is controlled to stop driving the thirteenth main switch and the fifteenth main switch, and the third driving circuit is controlled to drive the thirteenth standby switch and the fifteenth standby switch; The ninth main series branch includes a seventh fuse connected in series, the twelfth main switch and the thirteenth main switch; the ninth standby series branch includes the twelfth standby switch and the thirteenth standby switch connected in series; the tenth main series branch includes a fifth sampling resistor connected in series, a tenth fuse, the fourteenth main switch and the fifteenth main switch; the ninth standby series branch includes a sixth sampling resistor connected in series, the fourteenth standby switch and the fifteenth standby switch; 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 the first output end of the isolated 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 the second output end of the isolated buck circuit unit; the first end of the fifth inductor serves as the third input end of the synchronous rectification circuit unit to connect the third output end of the isolated buck circuit unit; The second end of the ninth main series branch is respectively 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.

10. A power failure processing system, characterized in that: The power supply includes a plurality of circuit units connected in sequence, and the power supply fault processing system includes: A fault status detection module, 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 previous circuit unit and disconnect the last circuit unit from the load device when a fault is detected in any circuit unit; A serious fault judgment module, used to judge whether it is a serious fault based on circuit data; If yes, triggering a first processing module, the first processing module is used to control relevant switches in the circuit unit with the fault, so that each spare component in the circuit unit with the fault is connected to the transmission line, and the main components corresponding to each spare component in the circuit unit with the fault are not connected to the transmission line; If not, triggering a second processing module, the second processing module is used to perform a preset fault response operation based on the circuit data and a preset fault response rule; The self-check recovery module is used to perform a self-check on the power supply and, when the self-check is successful, to restore the power supply from the power supply to the load device.

11. A power failure processing device, characterized in that: include: Memory for storing computer programs; A controller, configured to execute the computer program to implement the steps of the power failure processing method according to any one of claims 1 to 9.

12. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the power failure processing method according to any one of claims 1 to 9 are implemented.

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