CN115113090A - Fault determination method and computer readable storage medium - Google Patents

Abstract

The application discloses a fault determination method, a fault determination device, a fault determination system and a storage medium, and relates 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 alternating current pin, the second alternating current pin of the secondary power stage module is electrically connected with the first alternating current pin of a main power stage module, and the fault determination method comprises the following steps: when a fault event occurs, a first fault signal is output from the first fault pin, and a first alternating current signal is output from the second alternating current pin to the first alternating current pin of the main power stage module. The fault determining method can achieve rapid determination of the fault and provide guarantee for rapid solution of the fault.

Description

Fault determination method and computer readable storage medium

Technical Field

The present application relates to the field of power supply technologies, and in particular, to a fault determination method and a computer-readable storage medium.

Background

In a digital circuit board provided with a CPU and a GPU, a multi-power supply system is generally adopted, and in the multi-power supply system, a multi-phase controller and an intelligent power level module are generally configured, and the more power supplies are controlled, the more intelligent power level modules are configured in the multi-phase controller, but the number of phases matching the number of the multi-phase controller and the intelligent power level modules cannot be increased wirelessly. Therefore, in the actual use process, the multi-phase controller usually controls a plurality of intelligent power level modules through any one phase, and this control method has certain drawbacks, for example, when a plurality of intelligent power level modules controlled by a certain phase have a fault, because a one-to-many control mode is adopted, it is difficult to find the faulty intelligent power level module, and it is not possible to quickly determine the faulty device.

Disclosure of Invention

The present application is directed to solving at least one of the problems in the prior art. Therefore, the application provides a fault determination method and a computer-readable storage medium, which can realize rapid determination of the fault and provide guarantee for rapid solution of the fault.

The fault determination method according to the embodiment of the first aspect of the present application is applied to a secondary power stage module, the secondary power stage module is provided with a first fault pin and a second alternating current pin, the second alternating current pin of the secondary power stage module is electrically connected with the first alternating current pin of a primary power stage module, and the fault determination method includes:

and when a fault event occurs, outputting a first fault signal from the first fault pin, and outputting a first alternating current signal from the second alternating current pin to the first alternating current pin of the main power stage module.

According to some embodiments of the application, the outputting a first fault signal from the first fault pin when a fault event occurs comprises:

and when the fault event is overcurrent, outputting a first voltage value from the first fault pin as the first fault signal.

According to some embodiments of the application, the outputting a first fault signal from the first fault pin when a fault event occurs further comprises:

and when the fault event is a short circuit, outputting a third voltage value from the first fault pin as the first fault signal.

According to some embodiments of the application, the outputting a first fault signal from the first fault pin when a fault event occurs, further comprises:

and when the fault event is over-temperature, outputting a fourth voltage value from the first fault pin as the first fault signal.

According to some embodiments of the present application, the fault determination method further comprises:

and when the secondary power level module is in a normal working state, outputting a second alternating current signal to the first alternating current pin of the primary power level module from the second alternating current pin so as to enable the secondary power level module and the primary power level module to carry out current balance regulation.

The fault determination method according to the embodiment of the second aspect of the present application is applied to a primary power stage module, the primary power stage module is provided with a second fault pin and a first alternating current pin, and the first alternating current pin of the primary power stage module and the second alternating current pin of a secondary power stage module are electrically connected, and the fault determination method includes:

receiving a first alternating current signal through the first alternating current pin, wherein the first alternating current signal is obtained by the secondary power stage module through the output of the second alternating current pin;

and outputting a second fault signal from the second fault pin according to the first alternating current signal.

According to some embodiments of the present application, the fault determination method further comprises:

and when the secondary power level module is in a normal working state, outputting a third alternating current signal to the second alternating current pin of the secondary power level module from the first alternating current pin so as to enable the secondary power level module and the main power level module to carry out current balance regulation.

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

acquiring the first fault signal output by the secondary power stage module and the second fault signal output by the primary power stage module;

and 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.

According to some embodiments of the present application, the 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:

when the first fault signal is a first voltage value and the second fault signal is a second voltage value, determining the secondary power level module corresponding to the first fault signal as the fault module, and determining 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, determining the secondary power level module corresponding to the first fault signal as a fault module, and determining the fault type as a short circuit;

and when the first fault signal is a fourth voltage value and the second fault signal is the second voltage value, determining the secondary power level module corresponding to the first fault signal as a fault module, and determining the fault type as over-temperature.

A computer-readable storage medium according to a fourth aspect embodiment of the present application, the computer-readable storage medium having stored thereon computer-executable instructions for causing a computer to perform one of:

the fault determination method in the embodiment of the first aspect;

the fault determination method of the embodiment of the second aspect;

the method for determining the fault in the embodiment of the third aspect.

According to the fault determining method provided by the embodiment of the application, the following beneficial effects are achieved: firstly, when a fault event occurs in a secondary power level module, a first fault pin of the secondary power level module outputs a first fault signal, and meanwhile, a second alternating current pin of the secondary power level module outputs a first alternating current signal; secondly, a first alternating current pin of the main power stage module acquires a first alternating current signal and outputs a second fault signal through a second fault pin according to the first alternating current signal; and finally, the fault analysis system analyzes the first fault signal and the second fault signal to obtain an analysis result, and determines a fault module and a fault type according to the analysis result. According to the fault determining method, the first fault signal and the second fault signal are respectively obtained and analyzed, the fault module and the fault type are rapidly determined according to the first fault signal and the second fault signal, even if the secondary power level module and the main power level module are connected in parallel and controlled by the same driving signal, when a fault occurs, whether the fault module is the secondary power level module or the main power level module and the corresponding fault type can be rapidly judged, and therefore the problem caused by the fault module can be rapidly solved. Therefore, the fault determining method can achieve rapid determination of the fault and provide guarantee for rapid solution of the fault.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

The present application is further described with reference to the following figures and examples, in which:

FIG. 1 is a functional block diagram of a power supply system provided in one embodiment of the present application;

FIG. 2 is a schematic block diagram of a power supply system provided in another embodiment of the present application;

FIG. 3 is a diagram of a connection structure of a power supply system according to an embodiment of the present application;

FIG. 4 is a schematic flow diagram of a secondary power stage module side of a fault determination method provided in one embodiment of the present application;

FIG. 5 is a schematic flow diagram of a primary power stage module side of a fault determination method provided in an embodiment of the present application;

fig. 6 is a schematic flow chart of a fault analysis system side of a fault determination method according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a fault determination system according to an embodiment of the present application.

Reference numerals:

a primary power stage module 100, a secondary power stage module 110, a multi-phase controller 120, a fault analysis system 130, a memory 200, and a processor 300.

Detailed Description

Reference will now be made in detail to the embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative and are only for the purpose of explaining the present application and are not to be construed as limiting the present application.

It should be noted that although functional block divisions are provided in the system drawings and logical orders are shown in the flowcharts, in some cases, the steps shown and described may be performed in different orders than the block divisions in the systems or in the flowcharts. The terms etc. in the description and claims and the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

In the description of the present application, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and larger, smaller, larger, etc. are understood as excluding the present numbers, and larger, smaller, inner, etc. are understood as including the present numbers. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present application, unless otherwise expressly limited, terms such as set, mounted, connected and the like should be construed broadly, and those skilled in the art can reasonably determine the specific meaning of the terms in the present application by combining the detailed contents of the technical solutions.

In the description of the present application, reference to the description of "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

As shown in fig. 1, the power supply system of the present application includes a primary power stage module 100, a secondary power stage module 110, a multi-phase controller 120, and a fault analysis system 130, where the primary power stage module 100 and the secondary power stage module 110 are connected by respective idle pins, the primary power stage module 100 and the multi-phase controller 120 are connected by respective IMON pin, TMON pin, and PWM pin, the secondary power stage module 110 and the multi-phase controller 120 are connected by respective TMON pin and PWM pin, and the fault analysis system 130 is electrically connected to the IMON pins of the primary power stage module 100 and the secondary power stage module 110, respectively.

It should be noted that, as shown in fig. 2, the fault analysis system 130 may be provided separately, and is not integrated inside the power supply system, as long as it can establish communication with the primary power stage module 100 and the secondary power stage module 110; specifically, the fault analysis system 130 is electrically connected to respective IMON pins of the primary power stage module 100 and the secondary power stage module 110, so as to obtain output signals of the IMON pins.

It should be noted that, in the power supply system provided with the CPU and the GPU, the multiphase controller 120 is required, and smart power stages (intelligent power stage modules) corresponding to the number of phases of the multiphase controller 120 are provided. However, as the demand of various chip power supplies increases, the power requirements of the corresponding intelligent power level modules are higher and higher, so that more intelligent power level modules need to be configured, and the number of phases is difficult to increase infinitely by the controller.

In practical applications, as shown in fig. 3, when the number of phases of the multi-phase controller is smaller than the number of the intelligent power stage modules, the multi-phase controller needs one PWM output pin to drive the plurality of intelligent power stage modules, that is, when the PWM output pin outputs one waveform, the plurality of intelligent power stage modules are simultaneously driven. At this time, each of the plurality of intelligent power stage modules still needs to report current (the pin corresponding to the intelligent power stage module is IMON), temperature (the pin corresponding to the intelligent power stage module is TMON), and other alarm types, such as over-temperature, over-current, and short circuit.

The IMON pins of most of the currently similarly applied intelligent power stage modules are divided by series resistors, and an averaged IMON signal is output to the multi-phase controller 120. However, when the power supply system fails, it is difficult to know which intelligent power stage module has a problem and what problem is solved. The fault determination method of the embodiment of the application solves the problem, can realize quick determination of the fault and provides guarantee for quick solution of the fault.

A power supply system according to an embodiment of the present application is described below with reference to fig. 1.

It will be appreciated that, as shown in fig. 1, the mains power supply system comprises:

the main power stage module 100, the main power stage module 100 is provided with a first alternating current pin;

the secondary power stage module 110, the secondary power stage module 110 is provided with a second alternating current pin, and the first alternating current pin is connected with the second alternating current pin;

the multi-phase controller 120, the multi-phase controller 120 is connected to the primary power level module 100 and the secondary power level module 110 respectively;

the fault analysis system 130, the fault analysis system 130 is connected to the primary power stage module 100 and the secondary power stage module 110, respectively.

It should be noted that the first ac pin corresponds to the ish pin of the main power stage module 100 in fig. 3, the second ac pin corresponds to the ish pin of the secondary power stage module 110 in fig. 3, and the main power stage module 100 and the secondary power stage module 110 realize mutual communication through the ish pin.

It should be noted that the primary power stage module 100 is further provided with a second fault pin, and the secondary power stage module 110 is further provided with a first fault pin, which are all used for outputting corresponding fault signals. Specifically, the second failed pin corresponds to the IMON pin of the primary power stage module 100 in fig. 3, and the first failed pin corresponds to the IMON pin of the secondary power stage module 110 in fig. 3.

A fault determination method according to an embodiment of the present application is described below with reference to fig. 1, 3, and 4.

It can be understood that, as shown in fig. 1, 3 and 4, 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 with the first ac pin of the primary power stage module 100, and the fault determination method includes:

step S100, 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 main power stage module 100.

It should be noted that, as shown in fig. 3, the primary power stage module 100 may be understood as an intelligent power stage module in which the IMON pin is connected to the multi-phase controller 120, and the secondary power stage module 110 may be understood as an intelligent power stage module in which the IMON pin is not connected to the multi-phase controller 120.

It is understood that when a fault event occurs, outputting a 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 to serve as a first fault signal.

It is understood that, when a fault event occurs, outputting a first fault signal from the first fault pin further comprises:

and when the fault event is short circuit, outputting a third voltage value from the first fault pin as a first fault signal.

It is understood that, when a fault event occurs, outputting a first fault signal from the first fault pin further comprises:

and when the fault event is over-temperature, outputting a fourth voltage value from the first fault pin as a first fault signal.

It should be noted that, a self-test module is built in each of the secondary power stage module 110 and the primary power stage module 100, and can identify its own fault type and output a corresponding fault signal.

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

when the secondary power stage module 110 and the primary power stage module 100 are in a normal operating state, the second ac signal is output from the second ac pin to the first ac pin of the primary power stage module 100, so that current balance adjustment is performed on the secondary power stage module 110 and the primary power stage module 100.

It should be noted that, when the primary power stage module 100 and the secondary power stage module 110 are in a normal operating state, both the first ac pin and the second ac pin are used for transmitting a difference of an IMON signal of each intelligent power stage module, so as to achieve current balancing.

A fault determination method according to an embodiment of the present application is described below with reference to fig. 1, 3, and 5.

It can be understood that, as shown in fig. 1, 3 and 5, a fault determination method is provided, which is applied to a primary power stage module 100, the primary power stage module 100 is provided with a second fault pin and a first ac pin, the first ac pin of the primary power stage module 100 is electrically connected with the second ac pin of the secondary power stage module 110, and the fault determination method includes:

receiving a first alternating current signal through a first alternating current pin, wherein the first alternating current signal is obtained by outputting the first alternating current signal through a second alternating current pin by the secondary power stage module 110;

and outputting a second fault signal from the second fault pin according to the first alternating current signal.

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

when the secondary power stage module 110 is in a normal operating state, the third ac signal is output 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 primary power stage module 100 perform current balance adjustment.

A fault determination method according to an embodiment of the present application is described below with reference to fig. 1, 3, and 6.

It can be understood that, as shown in fig. 1, 3 and 6, a fault determination method is provided, which is applied to the fault analysis system 130, where the fault analysis system 130 is electrically connected to the secondary power stage module 110 and the primary power stage module 100, respectively, and the fault determination method includes:

acquiring a first fault signal output by the secondary power stage module 110 and a second fault signal output by the primary power stage module 100;

and 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.

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:

when the first fault signal is a first voltage value and the second fault signal is a second voltage value, determining the secondary power stage module 110 corresponding to the first fault signal as a fault module, and determining 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, determining the secondary power level module 110 corresponding to the first fault signal as a fault module, and determining the fault type as a short circuit;

when the first fault signal is the fourth voltage value and the second fault signal is the second voltage value, the secondary power stage module 110 corresponding to the first fault signal is determined as a fault module, and the fault type is determined as over-temperature.

It should be noted that the first voltage value may be 3.1V, and the second voltage value may be 3.3V.

Note that the third voltage value may be 2.9V.

Note that the fourth voltage value may be 2.7V.

It should be noted that the fault analysis system 130 is electrically connected to the first fault pin of the secondary power stage module 110 and the second fault pin of the primary power stage module 100, respectively.

It should be noted that the fault analysis system 130 may be configured as a multimeter, and a probe of the multimeter may be connected to the first faulty pin and the second faulty pin to measure and obtain corresponding voltage values.

It should be noted that the fault analysis system 130 may also be configured as a test platform, and the first fault signal and the second fault signal may be analyzed by building the test platform to obtain the first fault signal and the second fault signal, so as to obtain an analysis result.

Firstly, when the secondary power stage module 110 itself has a fault event, the first fault pin of the secondary power stage module 110 outputs a first fault signal, and simultaneously, the second ac pin of the secondary power stage module 110 outputs a first ac signal; secondly, the first ac pin of the main power stage module 100 obtains a 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 130 analyzes the first fault signal and the second fault signal to obtain an analysis result, and determines a fault module and a fault type according to the analysis result. According to the fault determining method, the first fault signal and the second fault signal are respectively obtained and analyzed, the fault module and the fault type are rapidly determined according to the first fault signal and the second fault signal, even if the secondary power level module 110 and the main power level module 100 are connected in parallel and controlled by the same driving signal, when a fault occurs, whether the fault module is the secondary power level module 110 or the main power level module 100 and the corresponding fault type can be rapidly judged, and therefore the problem caused by the fault module can be solved more rapidly. Therefore, the fault determining method can achieve rapid determination of the fault and provide guarantee for rapid solution of the fault.

The fault determination method of the embodiment of the present application is further described below with reference to fig. 1, fig. 2, and fig. 3.

Firstly, the fault types are set to be three types, namely overcurrent, short circuit and overtemperature, when the secondary power stage module 110 finds that the secondary power stage module 110 has a fault by self-detection, the IMON pin of the secondary power stage module 110 can send out a first fault signal, meanwhile, the ISHARE pin of the secondary power stage module 110 can send out a first alternating current signal, the ISHARE pin of the primary power stage module 100 receives the first alternating current signal, the IMON pin of the primary power stage module 100 can output a second fault signal, and an operator can quickly know that the secondary power stage module 110 has the fault 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.

Similarly, as shown in fig. 3, when there are a plurality of secondary power stage modules 110, for example, a first secondary module and a second secondary module, when the first secondary module finds that the first secondary module has a fault by self-checking, the IMON pin of the first secondary module sends out a first fault signal, and simultaneously, the ISHARE pin of the first secondary module can send out a first alternating current signal, the ISHARE pins of the main power module 100 and the second secondary module respectively receive the first alternating current signal, the IMON pin of the main power module 100 outputs a second fault signal, the IMON pin of the second secondary module outputs a third fault signal, and the third fault signal and the second fault signal have the same magnitude, by measuring and analyzing the first fault signal of the first secondary module, the second fault signal of the primary power stage module 100, and the third fault signal of the second secondary module, the operator can quickly know that it is the fault of the first secondary module.

A fault determination system according to an embodiment of the present application is described below with reference to fig. 7.

It is to be appreciated that as shown in fig. 7, a fault determination system, comprising:

at least one memory 200;

at least one processor 300;

at least one program;

the programs are stored in the memory 200, and the processor 300 executes at least one program to implement the above-described failure determination method. Fig. 7 illustrates an example of a processor 300.

The processor 300 and the memory 200 may be connected by a bus or other means, and fig. 7 illustrates a connection by a bus as an example.

The memory 200, which is a non-transitory computer readable storage medium, may be used to store non-transitory software programs, non-transitory computer executable programs, and signals, such as 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, i.e. implements the fault determination method of the above-described method embodiments, by running non-transitory software programs, instructions and signals stored in the memory 200.

The memory 200 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data related to the above-described failure determination method, and the like. Further, 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, flash memory device, or other non-transitory solid state storage device. In some embodiments, memory 200 optionally includes memory located remotely from processor 300, which may be connected to the fault determination system via a network. Examples of such networks include, but are not limited to, the internet of things, software defined networks, sensor networks, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.

The one or more signals are stored in the memory 200 and, when executed by the one or more processors 300, perform the fault determination method of any of the method embodiments described above. For example, the methods in fig. 4 to 6 described above are performed.

A computer-readable storage medium according to an embodiment of the present application is described below with reference to fig. 7.

As shown in fig. 7, a computer-readable storage medium stores computer-executable instructions that, when executed by one or more processors 300, for example, by one of processors 300 in fig. 7, may cause the one or more processors 300 to perform the fault determination method in the above-described method embodiments. For example, the methods in fig. 4 to 6 described above are performed.

The above-described system embodiments are merely illustrative, and the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

From the above description of embodiments, those of ordinary skill in the art will appreciate that all or some of the steps, systems, and methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media and communication media. The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information as is known to one of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disks or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer. In addition, communication media typically embodies computer readable signals, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.

The embodiments of the present application have been described in detail with reference to the drawings, but the present application is not limited to the embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present application. Furthermore, the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

Claims (10)

1. The 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 alternating current pin, the second alternating current pin of the secondary power stage module is electrically connected with the first alternating current pin of a primary power stage module, and the fault determination method comprises the following steps:

and when a fault event occurs, outputting a first fault signal from the first fault pin, and outputting a first alternating current signal from the second alternating current pin to the first alternating current pin of the main power stage module.

2. The fault determination method of claim 1, wherein outputting a first fault signal from the first fault pin upon the occurrence of a fault event comprises:

and when the fault event is overcurrent, outputting a first voltage value from the first fault pin as the first fault signal.

3. The fault determination method of claim 1, wherein outputting a first fault signal from the first fault pin upon the occurrence of a fault event further comprises:

and when the fault event is a short circuit, outputting a third voltage value from the first fault pin as the first fault signal.

4. The fault determination method of claim 1, wherein outputting a first fault signal from the first fault pin upon the occurrence of a fault event further comprises:

and when the fault event is over-temperature, outputting a fourth voltage value from the first fault pin as the first fault signal.

5. The fault determination method of claim 1, further comprising:

and when the secondary power level module is in a normal working state, outputting a second alternating current signal from the second alternating current pin to the first alternating current pin of the primary power level module so as to enable the secondary power level module and the primary power level module to carry out current balance regulation.

6. The fault determination method is applied to a main power level module, the main power level module is provided with a second fault pin and a first alternating current pin, the first alternating current pin of the main power level module is electrically connected with the second alternating current pin of a secondary power level module, and the fault determination method comprises the following steps:

receiving a first alternating current signal through the first alternating current pin, wherein the first alternating current signal is obtained by the secondary power stage module through the output of the second alternating current pin;

and outputting a second fault signal from the second fault pin according to the first alternating current signal.

7. The fault determination method of claim 6, further comprising:

and when the secondary power level module is in a normal working state, outputting a third alternating current signal to the second alternating current pin of the secondary power level module from the first alternating current pin so as to enable the secondary power level module and the main power level module to carry out current balance regulation.

8. The fault determination method is applied to a fault analysis system, wherein the fault analysis system is electrically connected with the secondary power stage module and the primary power stage module respectively, and the fault determination method comprises the following steps:

acquiring the first fault signal output by the secondary power stage module and the second fault signal output by the primary power stage module;

and 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.

9. The method of claim 8, wherein 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 comprises:

when the first fault signal is a first voltage value and the second fault signal is a second voltage value, determining the secondary power level module corresponding to the first fault signal as the fault module, and determining 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, determining the secondary power level module corresponding to the first fault signal as a fault module, and determining the fault type as a short circuit;

and when the first fault signal is a fourth voltage value and the second fault signal is the second voltage value, determining the secondary power level module corresponding to the first fault signal as a fault module, and determining the fault type as over-temperature.

10. A computer-readable storage medium having computer-executable instructions stored thereon for causing a computer to perform one of:

the fault determination method of any one of claims 1 to 5;

the fault determination method of any one of claims 6 to 7;

the fault determination method of any one of claims 8 to 9.

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