A fault determination method and a computer-readable storage medium

Abstract

The present application discloses a fault determination method, apparatus, system and storage medium, relating to the technical field of power supplies. A fault determination method is applied to a secondary power stage module. The secondary power stage module is provided with a first fault pin and a second AC pin. The second AC pin of the secondary power stage module is electrically connected to the first AC pin of the primary power stage module. The fault determination method includes: when a fault event occurs, output a first fault signal from the first fault pin and output a first AC signal from the second AC pin to the first AC pin of the primary power stage module. The fault determination method of the present application can achieve rapid fault determination and provide guarantee for rapid fault resolution.

Description

Technical Field

[0001] This application relates to the technical field of power supplies, and particularly to a fault determination method and a computer-readable storage medium. Background Art

[0002] In a digital circuit board provided with a CPU and a GPU, a multi-power supply system is generally adopted. In a multi-power supply system, a multi-phase controller and intelligent power stage modules are usually configured. The more power supplies to be controlled, the more intelligent power stage modules are equipped with the multi-phase controller. However, the number of phases matching the number of multi-phase controllers and intelligent power stage modules cannot increase infinitely. Therefore, in actual use, the multi-phase controller usually controls multiple intelligent power stage modules through any one phase. This control method has certain defects. For example, when multiple intelligent power stage modules controlled by a certain phase fail, since it is a one-to-many control method, it is very difficult to find the failed intelligent power stage module, and the faulty device cannot be quickly determined. Summary of the Invention

[0003] This application aims to at least solve one of the technical problems existing in the prior art. For this purpose, this application proposes a fault determination method and a computer-readable storage medium, which can achieve quick determination of faults and provide guarantee for quick solution of faults.

[0004] According to the fault determination method of the first aspect embodiment of this application, it is applied to a secondary power stage module. The secondary power stage module is provided with a first fault pin and a second AC pin. The second AC pin of the secondary power stage module is electrically connected to the first AC pin of the primary power stage module. The fault determination method includes:

[0005] When a fault event occurs, a first fault signal is output from the first fault pin, and a first AC signal is output from the second AC pin to the first AC pin of the primary power stage module.

[0006] According to some embodiments of this application, the step of when a fault event occurs and a first fault signal is output from the first fault pin includes:

[0007] When the fault event is overcurrent, a first voltage value is output from the first fault pin as the first fault signal.

[0008] According to some embodiments of this application, the step of when a fault event occurs and a first fault signal is output from the first fault pin further includes:

[0009] When the fault event is a short circuit, a third voltage value is output from the first fault pin as the first fault signal.

[0010] According to some embodiments of the present application, when a fault event occurs and a first fault signal is output from the first fault pin, it further includes:

[0011] When the fault event is over-temperature, a fourth voltage value is output from the first fault pin as the first fault signal.

[0012] According to some embodiments of the present application, the fault determination method further includes:

[0013] When in a normal working state, a second AC signal is output from the second AC pin to the first AC pin of the main power stage module, so that the secondary power stage module and the main power stage module perform current balance adjustment.

[0014] The fault determination method according to the second aspect embodiment of the present application is applied to a main power stage module. The main power stage module is provided with a second fault pin and a first AC pin. The first AC pin of the main power stage module is electrically connected to the second AC pin of the secondary power stage module. The fault determination method includes:

[0015] Receiving a first AC signal through the first AC pin, where the first AC signal is output by the secondary power stage module through the second AC pin;

[0016] According to the first AC signal, a second fault signal is output from the second fault pin.

[0017] According to some embodiments of the present application, the fault determination method further includes:

[0018] When in a normal working state, a third AC signal is output from the first AC pin to the second AC pin of the secondary power stage module, so that the secondary power stage module and the main power stage module perform current balance adjustment.

[0019] The fault determination method according to the third aspect embodiment of the present application is applied to a fault analysis system. The fault analysis system is electrically connected to the secondary power stage module and the main power stage module respectively. The fault determination method includes:

[0020] Obtaining the first fault signal output by the secondary power stage module and the second fault signal output by the main power stage module;

[0021] Analyzing the first fault signal and the second fault signal to obtain an analysis result, and determining a fault module and a fault type according to the analysis result.

[0022] According to some embodiments of the present application, analyzing the first fault signal and the second fault signal to obtain an analysis result, and determining a fault module and a fault type according to the analysis result includes:

[0023] When the first fault signal is a first voltage value and the second fault signal is a second voltage value, the sub - power - stage module corresponding to the first fault signal is determined as the fault module, and the fault type is determined as over - current;

[0024] When the first fault signal is a third voltage value and the second fault signal is the second voltage value, the sub - power - stage module corresponding to the first fault signal is determined as the fault module, and the fault type is determined as short - circuit;

[0025] When the first fault signal is a fourth voltage value and the second fault signal is the second voltage value, the sub - power - stage module corresponding to the first fault signal is determined as the fault module, and the fault type is determined as over - temperature.

[0026] According to the computer - readable storage medium of the fourth - aspect embodiment of the present application, the computer - readable storage medium stores computer - executable instructions, and the computer - executable instructions are used to cause a computer to execute one of the following:

[0027] The fault determination method described in the first - aspect embodiment;

[0028] The fault determination method described in the second - aspect embodiment;

[0029] The fault determination method described in the third - aspect embodiment.

[0030] The fault determination method according to the embodiments of the present application has the following beneficial effects: First, when a fault event occurs in the secondary power stage module itself, the first fault pin of the secondary power stage module outputs a first fault signal. At the same time, the second AC pin of the secondary power stage module outputs a first AC signal. Second, the first AC pin of the primary power stage module obtains the first AC signal and outputs a second fault signal through the second fault pin according to the first AC signal. Finally, the fault analysis system analyzes the first fault signal and the second fault signal to obtain an analysis result, and determines the fault module and the fault type according to the analysis result. The fault determination method of the present application obtains and analyzes the first fault signal and the second fault signal respectively, and quickly determines the fault module and the fault type according to the first fault signal and the second fault signal. Even if the secondary power stage module and the primary power stage module are connected in parallel and controlled by the same drive signal, when a fault occurs, it can quickly determine whether the fault module is the secondary power stage module or the primary power stage module, and the corresponding fault type, and then can solve the problem caused by the fault module more quickly. Therefore, the fault determination method of the present application can realize the rapid determination of faults and provide a guarantee for the rapid solution of faults.

[0031] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The following will further illustrate the present application with reference to the drawings and embodiments, where:

[0033] Figure 1 is a schematic block diagram of a power supply system provided by an embodiment of the present application;

[0034] Figure 2 is a schematic block diagram of a power supply system provided by another embodiment of the present application;

[0035] Figure 3 is a connection structure diagram of a power supply system provided by an embodiment of the present application;

[0036] Figure 4 is a schematic flowchart of the secondary power stage module side of the fault determination method provided by an embodiment of the present application;

[0037] Figure 5 is a schematic flowchart of the primary power stage module side of the fault determination method provided by an embodiment of the present application;

[0038] Figure 6 is a schematic flowchart of the fault analysis system side of the fault determination method provided by an embodiment of the present application;

[0039] Figure 7Schematic structural diagram of a fault determination system provided by an embodiment of the present application.

[0040] Reference numerals:

[0041] Main power stage module 100, secondary power stage module 110, multiphase controller 120, fault analysis system 130, memory 200, processor 300. Detailed implementation manners

[0042] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be construed as a limitation to the present application.

[0043] It should be noted that although the functional modules are divided in the system schematic diagram and the logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order from the module division in the system or the order in the flowchart. Terms such as those in the description of the specification, claims and the above-mentioned drawings are used to distinguish similar objects and do not necessarily need to be used to describe a specific order or sequence.

[0044] In the description of the present application, the meaning of "several" is more than one, the meaning of "multiple" is more than two, and understandings such as "greater than", "less than", "exceeding", etc. do not include the present number, and understandings such as "above", "below", "within", etc. include the present number. If there is a description of "first", "second", etc., it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence of the indicated technical features.

[0045] In the description of the present application, unless otherwise clearly defined, words such as "set", "installed", "connected", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present application in combination with the specific content of the technical solution.

[0046] In the description of the present application, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0047] As Figure 1As shown in the figure, the power supply system of the present application includes a main power stage module 100, a secondary power stage module 110, a multiphase controller 120, and a fault analysis system 130. The main power stage module 100 and the secondary power stage module 110 are connected through their respective ISHARE pins. The main power stage module 100 and the multiphase controller 120 are connected through their respective IMON pins, TMON pins, and PWM pins. The secondary power stage module 110 and the multiphase controller 120 are connected through their respective TMON pins and PWM pins. The fault analysis system 130 is electrically connected to the IMON pins of the main power stage module 100 and the secondary power stage module 110 respectively.

[0048] It should be noted that, as Figure 2 shown, the fault analysis system 130 can be set separately and is not integrated inside the power supply system, as long as it can establish communication with the main power stage module 100 and the secondary power stage module 110. Specifically, the fault analysis system 130 is electrically connected to the respective IMON pins of the main power stage module 100 and the secondary power stage module 110, and then obtains the output signals of the IMON pins.

[0049] It should be noted that in a power supply system provided with a CPU and a GPU, a multiphase controller 120 is required, and a corresponding number of smart power stage (intelligent power stage module) is equipped according to the number of phases of the multiphase controller 120. However, with the increasing demand for the power supply of various chips, the power requirements for the corresponding intelligent power stage modules are getting higher and higher, which requires more and more intelligent power stage modules to be configured, while it is difficult for the controller to infinitely increase the number of phases.

[0050] In practical applications, as Figure 3 shown, when the number of phases of the multiphase controller is less than the number of intelligent power stage modules, the multiphase controller needs a PWM output pin to drive multiple intelligent power stage modules. That is, when a waveform is output from the PWM output pin, multiple intelligent power stage modules will be driven simultaneously. At this time, each of the multiple intelligent power stage modules still needs to report current (the corresponding pin of the intelligent power stage module is IMON), temperature (the corresponding pin of the intelligent power stage module is TMON), and other alarm types, such as over-temperature, over-current, and short circuit.

[0051] At present, the IMON pins of the intelligent power stage modules in most similar applications are divided by voltage through a series resistor, and the average IMON signal is output to the multiphase controller 120. However, when a fault occurs in the power supply system, it is difficult to know which intelligent power stage module has a problem and what exactly the problem is. The fault determination method of the embodiment of the present application solves this problem and can achieve rapid determination of the fault, providing a guarantee for the rapid solution of the fault.

[0052] Refer to the following Figure 1 to describe the power supply system according to the embodiments of the present application.

[0053] It can be understood that as Figure 1 shown, the power supply system includes:

[0054] The main power stage module 100 is provided with a first AC pin;

[0055] The secondary power stage module 110 is provided with a second AC pin, and the first AC pin is connected to the second AC pin;

[0056] The multi-phase controller 120 is respectively connected to the main power stage module 100 and the secondary power stage module 110;

[0057] The fault analysis system 130 is respectively connected to the main power stage module 100 and the secondary power stage module 110.

[0058] It should be noted that the first AC pin is equivalent to Figure 3 the ISHARE pin of the main power stage module 100 in Figure 3 , and the second AC pin is equivalent to

[0059] the ISHARE pin of the secondary power stage module 110 in Figure 3 , and the main power stage module 100 and the secondary power stage module 110 communicate with each other through the ISHARE pin. Figure 3

[0060] Refer to the following Figure 1 , Figure 3 and Figure 4 to describe the fault determination method according to the embodiments of the present application.

[0061] It can be understood that as Figure 1 , Figure 3 and Figure 4 shown, a fault determination method is provided, which is applied to the secondary power stage module 110. The secondary power stage module 110 is provided with a first fault pin and a second AC pin. The second AC pin of the secondary power stage module 110 is electrically connected to the first AC pin of the main power stage module 100. The fault determination method includes:

[0062] ​Step S100, when a fault event occurs, output a first fault signal from the first fault pin and output a first AC signal from the second AC pin to the first AC pin of the main power stage module 100.

[0063] It should be noted that, as Figure 3 shown, the main power stage module 100 can be understood as an intelligent power stage module where the IMON pin is connected to the multi-phase controller 120, and the secondary power stage module 110 can be understood as an intelligent power stage module where the IMON pin is not connected to the multi-phase controller 120.

[0064] It can be understood that when a fault event occurs, outputting a first fault signal from the first fault pin includes:

[0065] When the fault event is overcurrent, output a first voltage value from the first fault pin as the first fault signal.

[0066] It can be understood that when a fault event occurs, outputting a first fault signal from the first fault pin further includes:

[0067] When the fault event is short circuit, output a third voltage value from the first fault pin as the first fault signal.

[0068] It can be understood that when a fault event occurs, outputting a first fault signal from the first fault pin further includes:

[0069] When the fault event is overtemperature, output a fourth voltage value from the first fault pin as the first fault signal.

[0070] It should be noted that both the secondary power stage module 110 and the main power stage module 100 are built-in with self-check modules, which can identify their own fault types and output corresponding fault signals.

[0071] It can be understood that the fault determination method further includes:

[0072] When in the normal working state, output a second AC signal from the second AC pin to the first AC pin of the main power stage module 100, so that the secondary power stage module 110 and the main power stage module 100 perform current balance adjustment.

[0073] It should be noted that when the main power stage module 100 and the secondary power stage module 110 are in the normal working state, both the first AC pin and the second AC pin are used to transmit the difference of the IMON signals of each intelligent power stage module for current balance.

[0074] Next, refer to Figure 1 、 Figure 3 and Figure 5 to describe the fault determination method according to the embodiments of the present application.

[0075] It can be understood that, as Figure 1 , Figure 3 and Figure 5 shown, a fault determination method is provided, which is applied to the main power stage module 100. The main power stage module 100 is provided with a second fault pin and a first AC pin. The first AC pin of the main power stage module 100 is electrically connected to the second AC pin of the secondary power stage module 110. The fault determination method includes:

[0076] Receiving a first AC signal through the first AC pin, where the first AC signal is output by the secondary power stage module 110 through the second AC pin;

[0077] Outputting a second fault signal from the second fault pin according to the first AC signal.

[0078] It can be understood that the fault determination method further includes:

[0079] When in the normal working state, outputting a third AC signal from the first AC pin to the second AC pin of the secondary power stage module 110, so that the secondary power stage module 110 and the main power stage module 100 perform current balance adjustment.

[0080] Next, refer to Figure 1 , Figure 3 and Figure 6 to describe the fault determination method according to the embodiment of the present application.

[0081] It can be understood that, as Figure 1 , Figure 3 and Figure 6 shown, a fault determination method is provided, which is applied to the fault analysis system 130. The fault analysis system 130 is electrically connected to the secondary power stage module 110 and the main power stage module 100 respectively. The fault determination method includes:

[0082] Obtaining a first fault signal output by the secondary power stage module 110 and a second fault signal output by the main power stage module 100;

[0083] Analyzing the first fault signal and the second fault signal to obtain an analysis result, and determining the fault module and the fault type according to the analysis result.

[0084] It can be understood that analyzing the first fault signal and the second fault signal to obtain an analysis result, and determining the fault module and the fault type according to the analysis result includes:

[0085] When the first fault signal is a first voltage value and the second fault signal is a second voltage value, the secondary power stage module 110 corresponding to the first fault signal is determined as the fault module, and the fault type is determined as overcurrent;

[0086] When the first fault signal is the third voltage value and the second fault signal is the second voltage value, the sub - power - stage module 110 corresponding to the first fault signal is determined as the faulty module, and the fault type is determined to be a short - circuit;

[0087] When the first fault signal is the fourth voltage value and the second fault signal is the second voltage value, the sub - power - stage module 110 corresponding to the first fault signal is determined as the faulty module, and the fault type is determined to be over - temperature.

[0088] It should be noted that the first voltage value can be 3.1V and the second voltage value can be 3.3V.

[0089] It should be noted that the third voltage value can be 2.9V.

[0090] It should be noted that the fourth voltage value can be 2.7V.

[0091] It should be noted that the fault analysis system 130 is electrically connected to the first fault pin of the sub - power - stage module 110 and the second fault pin of the main - power - stage module 100 respectively.

[0092] It should be noted that the fault analysis system 130 can be set as a multimeter. By connecting the probes of the multimeter to the first fault pin and the second fault pin, the corresponding voltage values can be measured.

[0093] It should be noted that the fault analysis system 130 can also be set as a test platform. By building the test platform to obtain the first fault signal and the second fault signal, the first fault signal and the second fault signal can be analyzed to obtain the analysis result.

[0094] First, when a fault event occurs in the secondary power stage module 110 itself, the first fault pin of the secondary power stage module 110 outputs a first fault signal. At the same time, the second AC pin of the secondary power stage module 110 outputs a first AC signal. Secondly, the first AC pin of the primary power stage module 100 obtains the first AC signal and, based on the first AC signal, outputs a second fault signal through the second fault pin. Finally, the fault analysis system 130 analyzes the first fault signal and the second fault signal to obtain an analysis result, and determines the fault module and the fault type according to the analysis result. In the fault determination method of the present application, by separately obtaining and analyzing the first fault signal and the second fault signal, and quickly determining the fault module and the fault type based on the first fault signal and the second fault signal, even if the secondary power stage module 110 and the primary power stage module 100 are connected in parallel and controlled by the same drive signal, when a fault occurs, it is possible to quickly determine whether the fault module is the secondary power stage module 110 or the primary power stage module 100, and the corresponding fault type, thereby enabling the problem caused by the fault module to be solved more quickly. Therefore, the fault determination method of the present application can achieve quick determination of faults and provide guarantee for quick solution of faults.

[0095] The following further describes the fault determination method of the embodiments of the present application in conjunction with Figure 1 、 Figure 2 and Figure 3 the following.

[0096] First, the fault types are set to three categories, namely overcurrent, short circuit, and overtemperature. When the secondary power stage module 110 self-checks and finds that it has a fault, the IMON pin of the secondary power stage module 110 will emit a first fault signal. At the same time, the ISHARE pin of the secondary power stage module 110 will emit a first AC signal. When the ISHARE pin of the primary power stage module 100 receives the first AC signal, the IMON pin of the primary power stage module 100 will output a second fault signal. By measuring the first fault signal and the second fault signal and analyzing the magnitudes of the first fault signal and the second fault signal, the operator can quickly know that the fault occurs in the secondary power stage module 110.

[0097] Similarly, as Figure 3As shown, when there are multiple secondary power stage modules 110, for example, a first secondary module and a second secondary module respectively, when the first secondary module self-checks and finds a fault in itself, the IMON pin of the first secondary module will send out a first fault signal. At the same time, the ISHARE pin of the first secondary module will send out a first AC signal. The ISHARE pins of the main power stage module 100 and the second secondary module receive the first AC signal respectively. The IMON pin of the main power stage module 100 outputs a second fault signal, and the IMON pin of the second secondary module outputs a third fault signal. Moreover, the third fault signal and the second fault signal are of the same magnitude. By measuring the first fault signal of the first secondary module, the second fault signal of the main power stage module 100, and the third fault signal of the second secondary module and analyzing them, the operator can quickly know that it is the first secondary module that has a fault.

[0098] The following refers to Figure 7 Describe the fault determination system according to the embodiments of the present application.

[0099] It can be understood that as Figure 7 shown, the fault determination system includes:

[0100] At least one memory 200;

[0101] At least one processor 300;

[0102] At least one program;

[0103] The program is stored in the memory 200, and the processor 300 executes at least one program to implement the above-mentioned fault determination method. Figure 7 Take one processor 300 as an example.

[0104] The processor 300 and the memory 200 can be connected by a bus or other means. Figure 7 Take the connection by bus as an example.

[0105] The memory 200, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs, non-transitory computer-executable programs, and signals, such as the program instructions / signals corresponding to the fault determination system in the embodiments of the present application. The processor 300 executes various functional applications and data processing by running the non-transitory software programs, instructions, and signals stored in the memory 200, that is, implements the fault determination method in the above method embodiments.

[0106] The memory 200 may include a program storage area and a data storage area. The program storage area may store an operating system and application programs required for at least one function. The data storage area may store relevant data of the above-mentioned fault determination method and the like. In addition, the memory 200 may include high-speed random access memory and may also include non-transitory memory, such as at least one magnetic disk storage device, a flash memory device, or other non-transitory solid-state storage devices. In some embodiments, the memory 200 may optionally include a memory remotely disposed relative to the processor 300, and these remote memories may be connected to the fault determination system through a network. Examples of the above-mentioned network include but are not limited to the Internet of Things, software-defined network, sensor network, Internet, enterprise intranet, local area network, mobile communication network, and combinations thereof.

[0107] One or more signals are stored in the memory 200 and, when executed by one or more processors 300, perform the fault determination method in any of the above method embodiments. For example, execute the method described above Figures 4 to 6 in the above.

[0108] The following refers to Figure 7 a description of a computer-readable storage medium according to an embodiment of the present application.

[0109] As Figure 7 shown, the computer-readable storage medium stores computer-executable instructions that are executed by one or more processors 300. For example, when executed by one of the processors 300 in Figure 7 the above, the one or more processors 300 can be caused to execute the fault determination method in the above method embodiments. For example, execute the method described above Figures 4 to 6 in the above.

[0110] The system embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0111] Through the description of the above embodiments, those of ordinary skill in the art can understand that all or some of the steps and systems disclosed above can be implemented as software, firmware, hardware, and their appropriate combinations. Some physical components or all physical components can be implemented as software executed by a processor, such as a central processing unit, a digital signal processor, or a microprocessor, or can be implemented as hardware, or can be implemented as an integrated circuit, such as an application-specific integrated circuit. Such software can be distributed on a computer-readable medium, which can include a computer storage medium and a communication medium. As is well known to those of ordinary skill in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information. The computer storage medium includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disks or other optical disk storage, magnetic cartridges, tapes, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store the desired information and can be accessed by a computer. In addition, as is well known to those of ordinary skill in the art, a communication medium typically contains computer-readable signals, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transmission mechanism, and can include any information delivery medium.

[0112] The embodiments of the present application have been described in detail above in conjunction with the accompanying drawings. However, the present application is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the purpose of the present application. In addition, the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

Claims

1. Fault determination method, characterized in that, Applied to the secondary power stage module, the secondary power stage module is provided with a first fault pin and a second AC pin. The second AC pin of the secondary power stage module is electrically connected to the first AC pin of the primary power stage module. The secondary power stage module is connected to a fault analysis system, and the fault analysis system is electrically connected to the primary power stage module; The primary power stage module is provided with a second fault pin; The fault determination method includes: When a fault event occurs, a first fault signal is output from the first fault pin, and a first AC signal is output from the second AC pin to the first AC pin of the primary power stage module, so that the primary power stage module outputs a second fault signal from the second fault pin according to the first AC signal, and enables the fault analysis system to analyze the first fault signal and the second fault signal to obtain an analysis result, and determine the fault module and the fault type according to the analysis result; Analyzing the first fault signal and the second fault signal to obtain an analysis result, and determining the fault module and the fault type according to the analysis result, includes: When the first fault signal is a first voltage value and the second fault signal is a second voltage value, the secondary power stage module corresponding to the first fault signal is determined as the fault module, and the fault type is determined as overcurrent; When the first fault signal is a third voltage value and the second fault signal is the second voltage value, the secondary power stage module corresponding to the first fault signal is determined as the fault module, and the fault type is determined as short circuit; When the first fault signal is a fourth voltage value and the second fault signal is the second voltage value, the secondary power stage module corresponding to the first fault signal is determined as the fault module, and the fault type is determined as overheating; Outputting the first fault signal from the first fault pin includes: When the fault event is overcurrent, a first voltage value is output from the first fault pin as the first fault signal; When a fault event occurs, outputting the first fault signal from the first fault pin further includes: When the fault event is short circuit, a third voltage value is output from the first fault pin as the first fault signal; When a fault event occurs, outputting the first fault signal from the first fault pin further includes: When the fault event is overheating, a fourth voltage value is output from the first fault pin as the first fault signal.

2. The fault determination method according to claim 1, characterized in that The fault determination method further includes: When in the normal working state, a second AC signal is output from the second AC pin to the first AC pin of the primary power stage module, so that the secondary power stage module and the primary power stage module perform current balance adjustment.

3. Fault determination method, characterized in that, Applied to the primary power stage module, the primary power stage module is provided with a second fault pin and a first AC pin. The first AC pin of the primary power stage module is electrically connected to the second AC pin of the secondary power stage module. The primary power stage module is electrically connected to a fault analysis system. The fault determination method includes: Receive a first AC signal through the first AC pin, where the first AC signal is output by the secondary power stage module through the second AC pin; According to the first AC signal, output a second fault signal from the second fault pin, so that the fault analysis system analyzes the first fault signal and the second fault signal to obtain an analysis result, and determines the fault module and fault type according to the analysis result; the first fault signal is sent by the secondary power stage module when a fault event occurs; Analyze the first fault signal and the second fault signal to obtain an analysis result, and determine the fault module and fault type according to the analysis result, including: When the first fault signal is a first voltage value and the second fault signal is a second voltage value, determine the secondary power stage module corresponding to the first fault signal as the fault module, and determine the fault type as overcurrent; When the first fault signal is a third voltage value and the second fault signal is the second voltage value, determine the secondary power stage module corresponding to the first fault signal as the fault module, and determine the fault type as short circuit; When the first fault signal is a fourth voltage value and the second fault signal is the second voltage value, determine the secondary power stage module corresponding to the first fault signal as the fault module, and determine the fault type as overtemperature.

4. The fault determination method according to claim 3, wherein The fault determination method further includes: When in the normal working state, output a third AC signal from the first AC pin to the second AC pin of the secondary power stage module, so that the secondary power stage module and the primary power stage module perform current balance adjustment.

5. Fault determination method, characterized in that, Applied to a fault analysis system, the fault analysis system is electrically connected to the secondary power stage module and the primary power stage module respectively. The secondary power stage module is provided with a first fault pin and a second AC pin, and the second AC pin of the secondary power stage module is electrically connected to the first AC pin of the primary power stage module; the primary power stage module is provided with a second fault pin; when a fault event occurs, output a first fault signal from the first fault pin, and output a first AC signal from the second AC pin to the first AC pin of the primary power stage module, and the primary power stage module outputs a second fault signal from the second fault pin according to the first AC signal; The fault determination method includes: Obtain the first fault signal output by the secondary power stage module and the second fault signal output by the primary power stage module; Analyze the first fault signal and the second fault signal to obtain an analysis result, and determine the fault module and fault type according to the analysis result; The analyzing the first fault signal and the second fault signal to obtain an analysis result, and determining the fault module and fault type according to the analysis result includes: When the first fault signal is a first voltage value and the second fault signal is a second voltage value, determine the secondary power stage module corresponding to the first fault signal as the fault module, and determine the fault type as overcurrent; When the first fault signal is the third voltage value and the second fault signal is the second voltage value, determine the sub-power stage module corresponding to the first fault signal as the faulty module and determine that the fault type is a short circuit; When the first fault signal is the fourth voltage value and the second fault signal is the second voltage value, determine the sub-power stage module corresponding to the first fault signal as the faulty module and determine that the fault type is overheating.

6. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to cause a computer to execute one of the following: The fault determination method according to any one of claims 1 to 2; The fault determination method according to any one of claims 3 to 4; The fault determination method according to claim 5.

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