CN117783712A - Fault detection method, device, vehicle and storage medium - Google Patents

Abstract

The application discloses a fault detection method, a fault detection device, a vehicle and a storage medium. The method comprises the steps of obtaining the actual output voltage of a power supply device of a vehicle and the whole vehicle voltage of the vehicle, wherein the actual output voltage is the voltage corresponding to an output port of the power supply device, and the whole vehicle voltage is the voltage corresponding to a power supply port of a controller of the vehicle; acquiring a first difference value between the actual output voltage and the whole vehicle voltage; based on the first difference, it is determined whether a power supply circuit of the vehicle has a fault. Therefore, whether the power supply loop of the vehicle has faults or not can be timely detected and judged through the first difference value between the actual output voltage corresponding to the power supply device and the whole vehicle voltage corresponding to the vehicle controller, and the fault occurrence position is accurately positioned when the power supply system of the vehicle has faults, so that the risk of functional failure of the vehicle due to insufficient power supply energy is avoided.

Description

Fault detection method, device, vehicle and storage medium

Technical Field

The present disclosure relates to the field of automotive electronics, and more particularly, to a fault detection method, device, vehicle, and storage medium.

Background

During the driving process of the automobile, the power supply device generally supplies power to the automobile through a power supply loop, and meanwhile, the automobile stores the residual electric quantity into the storage battery device. In case of failure of the power supply device, the vehicle is supplied with power as a backup power source by the storage battery device. However, the vehicle can only judge whether the power supply device has a fault according to the output voltage of the power supply device, and the problem of the power supply system of the vehicle can not be detected in time, so that the vehicle is at risk of anchoring due to insufficient power supply.

Disclosure of Invention

In view of the above problems, the present application provides a fault detection method, a fault detection device, a vehicle and a storage medium, which can accurately determine whether a power supply loop of the vehicle has a fault, thereby reducing the risk of vehicle anchoring.

In a first aspect, an embodiment of the present application provides a fault detection method, where the method includes: acquiring the actual output voltage of a power supply device of a vehicle and the whole vehicle voltage of the vehicle, wherein the actual output voltage is the voltage corresponding to an output port of the power supply device, and the whole vehicle voltage is the voltage corresponding to a power supply port of a controller of the vehicle; acquiring a first difference value between the actual output voltage and the whole vehicle voltage; based on the first difference, it is determined whether a power supply circuit of the vehicle has a fault.

In a second aspect, an embodiment of the present application provides a fault detection device, including: the system comprises a voltage acquisition module, a difference value acquisition module and a fault judgment module, wherein the voltage acquisition module is used for acquiring the actual output voltage of a power supply device of a vehicle and the whole vehicle voltage of the vehicle, the actual output voltage is the voltage corresponding to an output port of the power supply device, and the whole vehicle voltage is the voltage corresponding to a power supply port of a controller of the vehicle; the difference value acquisition module is used for acquiring a first difference value between the actual output voltage and the whole vehicle voltage; the fault judging module is used for determining whether a power supply loop of the vehicle has faults or not based on the first difference value.

In a third aspect, embodiments of the present application provide a vehicle, including: one or more processors; a memory; one or more applications, wherein the one or more applications are stored in the memory and configured to be executed by the one or more processors, the one or more applications configured to perform the fault detection method provided in the first aspect above.

In a fourth aspect, embodiments of the present application provide a computer readable storage medium having stored therein program code that is callable by a processor to perform the fault detection method provided in the first aspect above.

According to the scheme, the actual output voltage of the power supply device of the vehicle and the whole vehicle voltage of the vehicle are obtained, wherein the actual output voltage is the voltage corresponding to the output port of the power supply device, and the whole vehicle voltage is the voltage corresponding to the power supply port of the controller of the vehicle; acquiring a first difference value between the actual output voltage and the whole vehicle voltage; based on the first difference, it is determined whether a power supply circuit of the vehicle has a fault. Therefore, whether the power supply loop of the vehicle has faults or not can be timely detected and judged through the first difference value between the actual output voltage corresponding to the power supply device and the whole vehicle voltage corresponding to the vehicle controller, and the fault occurrence position is accurately positioned when the power supply system of the vehicle has faults, so that the risk of functional failure of the vehicle due to insufficient power supply energy is avoided.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic flow chart of a fault detection method according to an embodiment of the present application.

Fig. 2 is a schematic flow chart of a fault detection method according to another embodiment of the present application.

Fig. 3 is a schematic flowchart of step S220 in another embodiment of the present application.

Fig. 4 shows a block diagram of a fault detection device according to an embodiment of the present application.

Fig. 5 shows a block diagram of a vehicle according to an embodiment of the present application.

Fig. 6 shows a block diagram of a computer-readable storage medium according to an embodiment of the present application.

Detailed Description

In order to enable those skilled in the art to better understand the present application, the following description will make clear and complete descriptions of the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application.

In general, a vehicle is powered by a power supply device to supply power to an electric load, for example, for a fuel-type vehicle, the power supply device of the whole vehicle may be a generator, and for a pure electric-type vehicle, the power supply device of the whole vehicle may be a direct current-to-direct current converter (DCDC). The electric load of the vehicle can be loads such as sound, radio, lamplight or air conditioner. In the case of fuel or electric vehicles, there are accumulator devices, which are generally used to supply the engine and ignition system of the vehicle and to supply the electric loads in the vehicle when the power supply device is no longer operating. At this time, the power supply device of the vehicle may not be operated any more due to flameout of the vehicle, or may be an unexpected failure of the power supply device of the vehicle, or may be a failure of a power supply circuit between the power supply device of the vehicle and the power consumption load.

However, in any case, the electric load of the vehicle starts to be supplied with power from the battery device, and the electric quantity stored in the battery device cannot supply power to the electric load for a long time. After the storage battery device starts to supply power, the electric quantity and the voltage in the storage battery device are continuously reduced until the voltage is lower than 9V, and the requirements of most of power utilization loads can not be met, so that each system of the vehicle is faulty, and even the vehicle can flameout, power loss and other problems in the running process are caused.

Therefore, the vehicle needs to detect whether the power supply device has a fault in real time, so as to detect the fault in time and avoid that the vehicle supplies power for the power load by the storage battery device for a long time. However, in general, the vehicle can only determine whether the power supply device has a fault by detecting the output voltage of the power supply device, but if the power supply device of the vehicle has no fault, a power supply circuit between the power supply device and the power load has a fault, for example, a fault such as a main fuse in an electrical box is blown. In this case, the vehicle determines, by means of the output voltage of the power supply device, that the power supply device is not defective, but that in practice the load of the vehicle has been switched to be supplied by the accumulator device. Under the condition, if the user cannot learn that the power supply loop of the vehicle fails in time and still continues to drive the vehicle, the vehicle is likely to flameout in the driving process, the use experience of the user is affected, and the driving safety of the user is even threatened.

Therefore, the application provides a fault detection method, device, vehicle and storage medium, through the first difference between the actual output voltage that power supply unit corresponds and the whole vehicle voltage that vehicle controller corresponds, can in time detect and judge whether there is the trouble in the power supply circuit of vehicle to the accurate location trouble emergence position when the power supply system of vehicle breaks down avoids the vehicle to lead to the risk of functional failure because the power supply electric energy is not enough. The specific fault detection method is described in detail in the following embodiments.

Referring to fig. 1, fig. 1 is a schematic flow chart of a fault detection method according to an embodiment of the present application, and the detailed description will be given below with respect to the flow chart shown in fig. 1, where the fault detection method may specifically include the following steps:

step S110: the method comprises the steps of obtaining the actual output voltage of a power supply device of a vehicle and the whole vehicle voltage of the vehicle.

In this embodiment of the present application, the vehicle may acquire, as the actual output voltage, the voltage corresponding to the output port of the power supply device, and acquire, as the overall vehicle voltage, the voltage corresponding to the power supply port of the controller. In particular, for vehicles of the fuel type, the power supply means thereof may be a generator; for a purely electric vehicle, the power supply device may be a DCDC converter. The vehicle can also acquire the voltage of the whole vehicle. In addition to the power supply device being able to supply power to the electric load, there is a battery device as a backup power source in the vehicle, and the power supply device being able to supply power to the electric load when it is unable to supply power normally.

It can be understood that if the electric load of the vehicle is powered by the power supply device at this time, the vehicle voltage obtained by the vehicle should be the actual output voltage corresponding to the power supply device, that is, the vehicle voltage obtained by the vehicle should be close to the actual output voltage. If the load of the vehicle is supplied by the battery device, the vehicle voltage obtained by the vehicle should be the output voltage of the battery device. In general, the output voltage of the battery device is different from the output voltage of the power supply device. Specifically, when the vehicle leaves the factory, the set output voltage corresponding to the power supply device is set, for example, the set output voltage corresponding to the power supply device such as the DCDC converter or the generator is generally set to be 14V, and in the case that the power supply device is normally used, the output voltage of the power supply device can be always kept at about 14V without large fluctuation. The output voltage of the battery device is typically set to 12V, and the corresponding output voltage of the battery device gradually decreases as the usage period increases. That is, if the electric load of the vehicle is supplied with power from the storage battery device at this time, the vehicle voltage obtained by the vehicle should be greatly different from the actual output voltage corresponding to the power supply device, and the difference therebetween may be gradually increased. Therefore, after the actual output voltage and the whole vehicle voltage are obtained, the current power consumption load of the vehicle can be judged to be powered by the storage battery or the power supply device based on the magnitude relation between the actual output voltage and the whole vehicle voltage.

Step S120: and acquiring a first difference value between the actual output voltage and the whole vehicle voltage.

In this embodiment of the present application, after the vehicle obtains the actual output voltage and the entire vehicle voltage, it may first determine whether the power supply device of the vehicle has a fault based on the actual output voltage, that is, determine whether the actual output voltage actually detected by the vehicle has a larger phase difference with the preset output voltage set for the power supply device. If the two voltages are close, the vehicle can determine that the power supply device has no fault, and in this case, the vehicle can further determine whether the power supply loop in the power supply system has the fault by acquiring a first difference between the actual output voltage and the voltage of the whole vehicle.

Specifically, if the power supply device of the vehicle is determined to be free from a malfunction, the actual output voltage acquired by the vehicle should be close to the set output voltage corresponding to the power supply device. The whole vehicle voltage of the vehicle is equivalent to the voltage corresponding to the electric load, so that the vehicle can judge whether the current electric load of the vehicle is actually supplied by the power supply device or by the storage battery device through the first difference value between the actual output voltage and the whole vehicle voltage, and the vehicle can judge whether a power supply loop of the current vehicle has faults or not.

Obviously, if the vehicle determines that the electric load is supplied by the storage battery device through the first difference value, the vehicle can determine that the power supply loop in the power supply system has a fault in the case that the power supply device has no fault.

Step S130: based on the first difference, it is determined whether a power supply circuit of the vehicle has a fault.

In this embodiment of the present application, if the power supply device does not have a fault, and if the power supply loop of the vehicle does not have a fault, then the power load may be preferentially powered by the power supply device, and at this time, the first difference between the vehicle voltage acquired by the vehicle and the actual output voltage corresponding to the power supply device should be smaller. On the contrary, if the power supply loop fails, the power load is powered by the storage battery device, and since the output voltage corresponding to the storage battery device is significantly smaller than the set output voltage corresponding to the power supply device, the output voltage corresponding to the storage battery device gradually decreases with the increase of the power supply time, that is, the first difference between the vehicle voltage obtained based on the power load and the actual output voltage corresponding to the power supply device should be larger, and gradually increases with the lapse of time. Thus, the vehicle may determine whether a power supply circuit of the vehicle has a fault based on a first difference between the actual output voltage and the overall vehicle voltage.

In some embodiments, if there is a fault in the power circuit of the vehicle, this may be caused by a broken wire harness, or a blown fuse, etc. Obviously, once the power supply loop fails, the vehicle cannot supply power to the power utilization load through the power supply device, and then the power utilization load is automatically powered by the storage battery device, and if the vehicle is powered by the storage battery device for a long time, partial functions of the vehicle can be disabled, so that driving safety is threatened. Therefore, if the power supply circuit fails, the vehicle should be detected in time to avoid the power load of the vehicle using the power amount of the storage battery device for a long time.

According to the fault detection method provided by the embodiment of the application, the actual output voltage of the power supply device of the vehicle and the whole vehicle voltage of the vehicle are obtained, wherein the actual output voltage is the voltage corresponding to the output port of the power supply device, and the whole vehicle voltage is the voltage corresponding to the power supply port of the controller of the vehicle; acquiring a first difference value between the actual output voltage and the whole vehicle voltage; based on the first difference, it is determined whether a power supply circuit of the vehicle has a fault. Therefore, whether the power supply loop of the vehicle has faults or not can be timely detected and judged through the first difference value between the actual output voltage corresponding to the power supply device and the whole vehicle voltage corresponding to the vehicle controller, and the fault occurrence position is accurately positioned when the power supply system of the vehicle has faults, so that the risk of functional failure of the vehicle due to insufficient power supply energy is avoided.

Referring to fig. 2, fig. 2 is a schematic flow chart of a fault detection method according to another embodiment of the present application, and the detailed description will be given below with respect to the flow chart shown in fig. 2, where the fault detection method specifically may include the following steps:

step S210: the method comprises the steps of obtaining the actual output voltage of a power supply device of a vehicle and the whole vehicle voltage of the vehicle.

In the embodiment of the present application, step S210 may refer to descriptions in other embodiments, which are not specifically described herein.

Step S220: based on the actual output voltage, it is determined whether the power supply device has a fault.

In this embodiment of the present application, after the vehicle obtains the actual output voltage corresponding to the power supply device and the vehicle voltage of the vehicle, it may first determine whether the power supply device of the vehicle has a fault based on the actual output voltage. Specifically, in the case of normal operation, the power supply device of the vehicle may have an output voltage that is stabilized at a preset output voltage, and the preset output voltage may be preset in a customized manner. In general, the technician can set the set output voltage of the power supply device to about 14V. Obviously, if the actual output voltage corresponding to the power supply device of the vehicle is greatly different from the preset set output voltage, it is obvious that the power supply device cannot normally operate, i.e. the power supply device has a fault. In contrast, if the actual output voltage acquired by the vehicle is close to the set output voltage corresponding to the power supply device, it may be determined that the power supply device is in a normal operating state, that is, the power supply device is not out of order.

It will be appreciated that even in the case of normal operation of the power supply device, the vehicle may allow a certain offset between the actual output voltage corresponding to the obtained power supply device and the set output voltage in consideration of the influence of the voltage drop in normal voltage transmission, and it is not necessarily determined that the power supply device has no fault only in the case where the actual output voltage is completely equal to the set output voltage.

In some embodiments, as shown in fig. 3, the vehicle may determine whether there is a malfunction of the power supply device based on the actual output voltage by:

step S221: and determining a difference value between the set output voltage corresponding to the power supply device and the voltage drop corresponding to the power supply loop, and taking the difference value as a reference output voltage.

In the embodiment of the present application, in order to make the determination result of the power supply device more accurate, the influence of the voltage drop on the power supply circuit on the set output voltage may be considered. That is, the vehicle may determine the reference output voltage corresponding to the power supply device based on the predetermined set output voltage corresponding to the power supply device and the corresponding maximum voltage drop across the power supply loop. For example, it is assumed that a technician sets a set output voltage corresponding to the power supply device to 14V in advance, but considering that the voltage drop on the power supply circuit may be 1V at maximum, a voltage value of 13V may be taken as a reference output voltage corresponding to the power supply device according to 14V-1 v=13V, and it is determined whether there is a malfunction of the power supply device based on the reference output voltage and an actual output voltage corresponding to the power supply device.

Specifically, if the actual output voltage of the power supply device detected by the vehicle is between 14V and 13V, that is, between the set output voltage and the reference output voltage, the power supply device may be regarded as being in a normal operation state. Otherwise, the power supply device is considered to have a fault.

Step S222: and if the actual output voltage is smaller than the reference output voltage, determining that the power supply device has faults.

Step S223: and if the actual output voltage is greater than or equal to the reference output voltage, determining that the power supply device has no fault.

In this embodiment of the present application, after the vehicle obtains the actual output voltage corresponding to the power supply device, if the actual output voltage is smaller than the reference output voltage corresponding to the power supply device, that is, the difference between the actual output voltage and the set output voltage corresponding to the power supply device is greater than the normal voltage drop on the power supply loop, it is obvious that the actual output voltage is too small due to the failure of the power supply device. In contrast, if the actual output voltage is greater than or equal to the reference output voltage, even if the actual output voltage is still smaller than the set output voltage corresponding to the power supply device, the difference between the two may be interpreted by a certain voltage drop on the power supply loop, so that it may be determined that no fault exists in the power supply device at this time.

Step S230: and if the power supply device has no fault, acquiring a first difference value between the actual output voltage and the whole vehicle voltage.

In the embodiment of the application, if the vehicle determines that the power supply device has no fault based on the actual output voltage corresponding to the power supply device, the power supply loop between the power supply device and the power utilization load of the vehicle may still have a fault at this time. Therefore, the vehicle can further judge whether the power supply loop has faults based on the obtained whole vehicle voltage under the condition that the power supply device is determined to have no faults.

Step S240: and if the first difference value is greater than or equal to the preset threshold value, acquiring the duration time when the first difference value is greater than or equal to the preset threshold value as the first duration time.

In this embodiment of the present application, in order to exclude an influence of a contingency factor on a determination result, the vehicle may acquire a duration time that the first difference value is greater than a preset threshold. According to the description in the foregoing steps, if there is a failure in the power supply circuit of the vehicle, the first difference between the actual output voltage of the vehicle and the voltage of the entire vehicle should be large, and will become larger and larger with the lapse of time. Therefore, the magnitude of the first difference is determined by a preset threshold value set in advance. Meanwhile, in order to avoid that the first difference value caused by normal voltage fluctuation is greater than or equal to a preset threshold value, the vehicle can acquire the duration time when the first difference value is greater than or equal to the preset threshold value under the condition that the first difference value is greater than or equal to the preset threshold value, and judge whether a power supply loop of the vehicle has faults or not based on the duration time.

Step S250: if the first duration is longer than the first preset duration, determining that the power supply loop has faults.

Step S260: if the first duration is less than or equal to the first preset duration, determining that no fault exists in the power supply loop.

In this embodiment of the present application, if the first duration is longer than the first preset duration, this is equivalent to that in a longer time, the whole vehicle voltage of the vehicle is smaller than the actual output voltage of the power supply device, and the difference between the two is larger. At the same time the vehicle has determined that there is no fault in the power supply means, the vehicle may determine that there is a fault in the power supply circuit. On the contrary, if it has been determined that the power supply device has no fault, if the first duration is less than or equal to the first preset duration, that is, the overall voltage of the vehicle is only sporadically less than the actual output voltage of the power supply device, and then the overall voltage of the vehicle can still be raised to a voltage close to the actual output voltage, the vehicle can determine that the power supply circuit has no fault.

Step S270: and if the first difference value is smaller than the preset threshold value, determining that the power supply loop of the vehicle has no fault.

In this embodiment of the present application, the vehicle may determine, based on a first difference between an actual output voltage corresponding to the power supply device and a voltage of the entire vehicle, whether the current power load of the vehicle is powered by the power supply device or powered by the storage battery device, and further determine whether a fault exists in the current power supply loop. Obviously, if the power supply loop has a fault, the power consumption load cannot be supplied by the power supply device, and the voltage provided by the storage battery device is obviously smaller than the actual output voltage of the power supply device, so that if the difference between the actual output voltage and the voltage of the whole vehicle is smaller than the preset threshold value, whether the power consumption load is supplied by the power supply device at the moment can be determined, and further, the power supply loop of the vehicle has no fault.

Step S280: if the power supply loop is determined to have faults, uploading fault information to a server, wherein the fault information is used for representing that the power supply loop corresponding to the vehicle has faults, and indicating the server to send an alarm prompt to a user through reserved information corresponding to the vehicle.

In the embodiment of the application, if the vehicle determines that the power supply loop in the power supply system has a fault based on the first difference value or determines that the power supply device has a fault based on the actual output voltage, the vehicle can upload corresponding fault information to the server through a vehicle networking system (TBOX), so that the server can record the vehicle identifier with the fault and the position where the fault occurs, and the problem analysis is convenient for subsequent technicians. Meanwhile, after receiving the fault information sent by the vehicle, the server can also send alarm prompt information to a user related to the vehicle through pre-stored reserved information corresponding to the fault vehicle. Specifically, the server may store preset information related to the vehicle, such as a phone number, a mailbox account, etc., input by the user, and after receiving the fault information sent by the vehicle, the server may prompt the user that the vehicle has a fault currently in a phone call, a short message or a mail through the preset information, so that the user should overhaul in time.

Step S290: if the power supply loop is determined to have faults, outputting fault prompt information through instrument equipment of the vehicle.

In the embodiment of the application, the vehicle can accurately judge whether the power supply device and the power supply loop of the vehicle have faults through the steps. If the vehicle detects that the power supply loop or the power supply device of the vehicle has faults, fault prompt information can be timely output through instrument equipment or a vehicle networking system in the vehicle to prompt a driver that the current power supply loop/the power supply device of the vehicle has faults, and overhaul is timely carried out to ensure driving safety.

According to the anti-carsickness control method, the actual output voltage of the power supply device of the vehicle and the whole vehicle voltage of the vehicle are obtained; if the actual output voltage is smaller than the reference output voltage, determining that the power supply device has faults, and if the actual output voltage is larger than or equal to the reference output voltage, determining that the power supply device has no faults; if the power supply device has no fault, judging whether a power supply loop of the vehicle has the fault or not based on a first difference value between the actual output voltage and the whole vehicle voltage. Therefore, the vehicle can accurately judge whether the power supply device and the power supply loop in the power supply system have faults through the actual output voltage of the power supply device and the whole vehicle voltage, so that the power consumption load of the vehicle consumes the electric quantity in the storage battery device for a long time, and the risk of functional failure of the vehicle due to insufficient power supply is avoided.

Referring to fig. 4, which is a block diagram illustrating a fault detection device 200 according to an embodiment of the present application, a motion sickness prevention control device 200 includes: a voltage acquisition module 210, a difference acquisition module 220, and a fault determination module 230. The voltage obtaining module 210 is configured to obtain an actual output voltage of a power supply device of the vehicle and a vehicle voltage of the vehicle, where the actual output voltage is a voltage corresponding to an output port of the power supply device, and the vehicle voltage is a voltage corresponding to a power supply port of a controller of the vehicle; the difference value obtaining module 220 is configured to obtain a first difference value between the actual output voltage and the vehicle voltage; the fault determination module 230 is configured to determine whether a power supply loop of the vehicle has a fault based on the first difference.

As a possible implementation manner, the fault determining module 230 is further configured to obtain, as the first duration, the duration when the first difference is greater than or equal to the preset threshold if the first difference is greater than or equal to the preset threshold; if the first duration is longer than the first preset duration, determining that a power supply loop has faults; if the first duration is less than or equal to the first preset duration, determining that no fault exists in the power supply loop.

As a possible implementation manner, the fault determining module 230 is further configured to determine that the power supply loop of the vehicle is not faulty if the first difference is smaller than the preset threshold.

As a possible implementation manner, the fault detection device 200 further includes a device judgment module, configured to determine whether the power supply device has a fault based on the actual output voltage; the difference obtaining module 220 is further configured to obtain a first difference between the actual output voltage and the vehicle voltage if the power supply device has no fault.

As a possible implementation manner, the device judging module is further configured to determine a difference between a set output voltage corresponding to the power supply device and a voltage drop corresponding to the power supply loop, and take the difference as a reference output voltage; if the actual output voltage is smaller than the reference output voltage, determining that the power supply device has faults; and if the actual output voltage is greater than or equal to the reference output voltage, determining that the power supply device has no fault.

As a possible implementation manner, the fault detection device 200 further includes a fault uploading module, configured to upload fault information to a server if it is determined that the power supply loop has a fault, where the fault information is used to characterize that the power supply loop corresponding to the vehicle has a fault, and instruct the server to send an alarm prompt to a user through reservation information corresponding to the vehicle.

As a possible implementation manner, the fault detection device 200 further includes a prompt output module, configured to output, if it is determined that the power supply loop has a fault, fault prompt information through an instrument device of the vehicle.

It will be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working process of the apparatus and modules described above may refer to the corresponding process in the foregoing method embodiment, which is not repeated herein.

In several embodiments provided herein, the coupling of the modules to each other may be electrical, mechanical, or other.

In addition, each functional module in each embodiment of the present application may be integrated into one processing module, or each module may exist alone physically, or two or more modules may be integrated into one module. The integrated modules may be implemented in hardware or in software functional modules.

In summary, according to the scheme provided by the application, the actual output voltage of the power supply device of the vehicle and the whole vehicle voltage of the vehicle are obtained, wherein the actual output voltage is the voltage corresponding to the output port of the power supply device, and the whole vehicle voltage is the voltage corresponding to the power supply port of the controller of the vehicle; acquiring a first difference value between the actual output voltage and the whole vehicle voltage; based on the first difference, it is determined whether a power supply circuit of the vehicle has a fault. Therefore, whether the power supply loop of the vehicle has faults or not can be timely detected and judged through the first difference value between the actual output voltage corresponding to the power supply device and the whole vehicle voltage corresponding to the vehicle controller, and the fault occurrence position is accurately positioned when the power supply system of the vehicle has faults, so that the risk of functional failure of the vehicle due to insufficient power supply energy is avoided.

Referring to fig. 5, a block diagram of a vehicle 400 according to an embodiment of the present application is shown. The vehicle 400 in the present application may include one or more of the following components: a processor 410, a memory 420, and one or more application programs, wherein the one or more application programs may be stored in the memory 420 and configured to be executed by the one or more processors 410, the one or more program(s) configured to perform the method as described in the foregoing method embodiments.

Processor 410 may include one or more processing cores. The processor 410 utilizes various interfaces and lines to connect various portions of the overall computer device, perform various functions of the computer device, and process data by executing or executing instructions, programs, code sets, or instruction sets stored in the memory 420, and invoking data stored in the memory 420. Alternatively, the processor 410 may be implemented in hardware in at least one of digital signal processing (Digital Signal Processing, DSP), field programmable gate array (Field-Programmable Gate Array, FPGA), programmable logic array (Programmable Logic Array, PLA). The processor 410 may integrate one or a combination of several of a central processing unit (Central Processing Unit, CPU), a graphics processor (Graphics Processing Unit, GPU), and a modem, etc. The CPU mainly processes an operating system, a user interface, an application program and the like; the GPU is used for being responsible for rendering and drawing of display content; the modem is used to handle wireless communications. It will be appreciated that the modem may not be integrated into the processor 410 and may be implemented solely by a single communication chip.

The Memory 420 may include a random access Memory (Random Access Memory, RAM) or a Read-Only Memory (Read-Only Memory). Memory 420 may be used to store instructions, programs, code sets, or instruction sets. The memory 420 may include a stored program area and a stored data area, wherein the stored program area may store instructions for implementing an operating system, instructions for implementing at least one function (e.g., a touch function, a sound playing function, an image playing function, etc.), instructions for implementing the various method embodiments described below, etc. The storage data area may also store data created by the computer device in use (e.g., phonebook, audio-video data, chat-record data), etc.

Referring to fig. 6, a block diagram of a computer readable storage medium according to an embodiment of the present application is shown. The computer readable medium 800 has stored therein program code which can be invoked by a processor to perform the methods described in the method embodiments described above.

The computer readable storage medium 800 may be an electronic memory such as a flash memory, an EEPROM (electrically erasable programmable read only memory), an EPROM, a hard disk, or a ROM. Optionally, the computer readable storage medium 800 comprises a non-volatile computer readable medium (non-transitory computer-readable storage medium). The computer readable storage medium 800 has storage space for program code 810 that performs any of the method steps described above. The program code can be read from or written to one or more computer program products. Program code 810 may be compressed, for example, in a suitable form.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and are not limiting thereof; although the present application has been described in detail with reference to the foregoing embodiments, one of ordinary skill in the art will appreciate that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not drive the essence of the corresponding technical solutions to depart from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims (10)

1. A method of fault detection, the method comprising:

acquiring the actual output voltage of a power supply device of a vehicle and the whole vehicle voltage of the vehicle, wherein the actual output voltage is the voltage corresponding to an output port of the power supply device, and the whole vehicle voltage is the voltage corresponding to a power supply port of a controller of the vehicle;

acquiring a first difference value between the actual output voltage and the whole vehicle voltage;

based on the first difference, it is determined whether a power supply circuit of the vehicle has a fault.

2. The method of claim 1, wherein determining whether a power circuit of the vehicle is faulty based on the first difference value comprises:

if the first difference value is greater than or equal to a preset threshold value, acquiring the duration time when the first difference value is greater than or equal to the preset threshold value as a first duration time;

if the first duration is longer than a first preset duration, determining that the power supply loop has faults;

and if the first duration is smaller than or equal to the first preset duration, determining that the power supply loop has no fault.

3. The method of claim 1, wherein the determining whether a power circuit of the vehicle has a fault based on the first difference value comprises:

and if the first difference value is smaller than the preset threshold value, determining that the power supply loop of the vehicle has no fault.

4. The method of claim 1, wherein prior to the obtaining the first difference between the actual output voltage and the vehicle voltage, the method further comprises:

determining whether the power supply device has a fault based on the actual output voltage;

the obtaining the first difference between the actual output voltage and the whole vehicle voltage includes:

and if the power supply device has no fault, acquiring a first difference value between the actual output voltage and the whole vehicle voltage.

5. The method of claim 4, wherein determining whether the power supply device is malfunctioning based on the actual output voltage comprises:

determining a difference value between a set output voltage corresponding to the power supply device and a voltage drop corresponding to the power supply loop, and taking the difference value as a reference output voltage;

if the actual output voltage is smaller than the reference output voltage, determining that the power supply device has a fault;

and if the actual output voltage is greater than or equal to the reference output voltage, determining that the power supply device has no fault.

6. The method according to any one of claims 1-5, further comprising:

if the power supply loop is determined to have faults, uploading fault information to a server, wherein the fault information is used for representing that the power supply loop corresponding to the vehicle has faults, and indicating the server to send an alarm prompt to a user through reserved information corresponding to the vehicle.

7. The method according to any one of claims 1-5, further comprising:

if the power supply loop is determined to have faults, outputting fault prompt information through instrument equipment of the vehicle.

8. A fault detection device, the device comprising:

the voltage acquisition module is used for acquiring the actual output voltage of a power supply device of a vehicle and the whole vehicle voltage of the vehicle, wherein the actual output voltage is the voltage corresponding to an output port of the power supply device, and the whole vehicle voltage is the voltage corresponding to a power supply port of a controller of the vehicle;

the difference value acquisition module is used for acquiring a first difference value between the actual output voltage and the whole vehicle voltage;

and the fault judging module is used for determining whether the power supply loop of the vehicle has faults or not based on the first difference value.

9. A vehicle, characterized in that the vehicle comprises:

one or more processors;

a memory;

one or more applications, wherein the one or more applications are stored in the memory and configured to be executed by the one or more processors, the one or more applications configured to perform the method of any of claims 1-7.

10. A computer readable storage medium, characterized in that the computer readable storage medium has stored therein a program code, which is callable by a processor for executing the method according to any one of claims 1-7.