CN116061957A

CN116061957A - Method, device and equipment for predicting failure fault of redundant power supply system of vehicle

Info

Publication number: CN116061957A
Application number: CN202111275641.4A
Authority: CN
Inventors: 周超; 朱德康; 吕敏煜; 费佳雯
Original assignee: SAIC Motor Corp Ltd
Current assignee: SAIC Motor Corp Ltd
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2023-05-05

Abstract

The application discloses a method, a device and equipment for predicting failure faults of a redundant power supply system of a vehicle, wherein the method comprises the following steps: firstly, acquiring a power supply voltage and a power supply current of a target vehicle; wherein the target vehicle comprises a redundant power supply system; the redundant power supply system comprises a power supply network protection module, and then, according to the power supply voltage and the power supply current of the target vehicle, whether the redundant power supply system of the target vehicle meets at least one preset failure mode is judged; if yes, predicting that a redundant power supply system of the target vehicle generates or is about to generate failure fault, and feeding back a prediction result of the failure fault to a user by utilizing a power supply network protection module; if not, predicting that the redundant power supply system of the target vehicle does not generate failure fault, and controlling the target vehicle to normally run. Therefore, the prediction accuracy of failure faults of the redundant power supply system of the target vehicle can be effectively improved, and the driving experience of a user is improved.

Description

Method, device and equipment for predicting failure fault of redundant power supply system of vehicle

Technical Field

The application relates to the technical field of vehicles, in particular to a method, a device and equipment for predicting failure faults of a redundant power supply system of a vehicle.

Background

With the improvement of the living standard of people and the rapid development of social economy, the utilization rate of automobiles is gradually increased, more and more automobiles enter the lives of people, and great convenience is brought to all aspects of the lives of people. Along with the rapid development of intelligent driving technology, people's acceptance and demand for automatic driving automobiles are gradually increasing.

At present, most traditional vehicles are only power supply systems of a single-path main power supply, and a 12V storage battery and a node of a 12V generator output to a rear-stage load in a single-path power supply network of the vehicles have a working condition of single-point failure. The failure of the node can cause that the electronic modules such as the later-stage BCM, GW/CCP, EPS and the like lose the KL30 constant-power supply, and then the multi-function failure of the whole vehicle is brought. The functions of steering assistance, engine control, brake control and the like are out of control, and the personal injury to drivers and passengers is serious. Aiming at the problem, the power supply system needs to ensure that when the vehicle fails inside under the condition that a driver does not intervene in the whole vehicle control, the key functional module of the power supply system can normally run for more than 5s, and the corresponding whole vehicle power supply system also needs to meet the requirements. Therefore, a standby power supply is required to supply power to loads such as EPS and ESP, and driving safety of the vehicle is ensured. In this regard, in order to ensure the safety of self-driving power supply, a redundant power supply system is newly added, as shown in fig. 1. When the power supply system of the vehicle has an electrical fault in the automatic driving process, the redundant power supply system can protect the main circuit and isolate the fault, the redundant circuit supplies power to key parts temporarily, the vehicle is prevented from being out of control, the vehicle is informed to exit from the automatic driving mode, and the safety of a person and the vehicle is ensured. However, the existing scheme is not accurate and perfect enough to predict failure faults of a redundant power supply system, has insufficient scene coverage, is often judged only from one aspect of undervoltage, overvoltage, overcurrent and short circuit, is not comprehensive enough and lacks fusion, and also lacks prediction of failure faults in the period of time for working of a future redundant circuit.

Disclosure of Invention

The embodiment of the application mainly aims to provide a prediction method, a device and equipment for failure faults of a redundant power supply system of a vehicle, which can effectively improve the prediction accuracy and improve the driving experience of a user.

The embodiment of the application provides a method for predicting failure faults of a redundant power supply system of a vehicle, which comprises the following steps:

acquiring a power supply voltage and a power supply current of a target vehicle; the target vehicle comprises a redundant power supply system; the redundant power supply system comprises a power supply network protection module;

judging whether a redundant power supply system of the target vehicle meets at least one preset failure mode according to the power supply voltage and the power supply current of the target vehicle;

if yes, predicting that the redundant power supply system of the target vehicle generates or is about to generate failure fault, and feeding back a prediction result of the failure fault to a user by utilizing the power supply network protection module;

if not, predicting that the redundant power supply system of the target vehicle does not generate failure fault, and controlling the target vehicle to normally run.

In an alternative implementation, the preset failure mode includes an under-voltage failure mode, an over-loss failure mode, a short-circuit failure mode, a voltage drop failure mode, and a cable drop failure mode.

In an alternative implementation, the preset failure mode includes a voltage drop failure mode; the voltage drop failure mode comprises the condition that the target vehicle has voltage drop after preset time; the determining whether the redundant power supply system of the target vehicle meets at least one preset failure mode according to the power supply voltage and the power supply current of the target vehicle comprises:

judging whether a redundant power supply system of the target vehicle meets a voltage drop failure mode or not according to the power supply voltage and the power supply current of the target vehicle;

if yes, predicting that the redundant power supply system of the target vehicle generates or is about to generate a failure fault, and feeding back a prediction result of the failure fault to a user by using the power supply network protection module, wherein the prediction result comprises the following steps:

if so, predicting failure faults of voltage drop of the redundant power supply system of the target vehicle after preset time, and feeding back the prediction results of the failure faults to a user by utilizing the power supply network protection module.

In an alternative implementation, the preset time is 5 seconds.

Corresponding to the method for predicting the failure fault of the redundant power supply system of the vehicle, the application provides a device for predicting the failure fault of the redundant power supply system of the vehicle, which comprises the following steps:

an acquisition unit configured to acquire a power supply voltage and a power supply current of a target vehicle; the target vehicle comprises a redundant power supply system; the redundant power supply system comprises a power supply network protection module;

the judging unit is used for judging whether the redundant power supply system of the target vehicle meets at least one preset failure mode according to the power supply voltage and the power supply current of the target vehicle;

the first prediction unit is used for predicting that the redundant power supply system of the target vehicle generates or is about to generate failure faults if judging that the redundant power supply system of the target vehicle meets at least one preset failure mode, and feeding back a prediction result of the failure faults to a user by utilizing the power supply network protection module;

and the second prediction unit is used for predicting that the redundant power supply system of the target vehicle does not generate failure fault if judging that the redundant power supply system of the target vehicle does not meet at least one preset failure mode, and controlling the target vehicle to normally run.

In an alternative implementation, the preset failure mode includes a voltage drop failure mode; the voltage drop failure mode comprises the condition that the target vehicle has voltage drop after preset time; the judging unit is specifically configured to:

the first prediction unit is specifically configured to:

if the redundant power supply system of the target vehicle meets at least one preset failure mode, a failure fault that voltage drop occurs to the redundant power supply system of the target vehicle after preset time is predicted, and a prediction result of the failure fault is fed back to a user by utilizing the power supply network protection module.

In an alternative implementation, the preset time is 5 seconds.

The embodiment of the application also provides a prediction device for failure faults of the redundant power supply system of the vehicle, which comprises the following components: a processor, memory, system bus;

the processor and the memory are connected through the system bus;

the memory is configured to store one or more programs, the one or more programs comprising instructions, which when executed by the processor, cause the processor to perform any one of the implementations of the method of predicting a failure of a redundant power supply system for a vehicle described above.

The embodiment of the application also provides a computer readable storage medium, wherein the computer readable storage medium stores instructions, and when the instructions run on the terminal equipment, the terminal equipment is caused to execute any implementation mode of the method for predicting the failure fault of the redundant power supply system of the vehicle.

From this, the embodiment of the application has the following beneficial effects:

the embodiment of the application provides a method, a device and equipment for predicting failure faults of a redundant power supply system of a vehicle, wherein the method, the device and the equipment firstly acquire power supply voltage and power supply current of a target vehicle; wherein the target vehicle comprises a redundant power supply system; the redundant power supply system comprises a power supply network protection module, and then, according to the power supply voltage and the power supply current of the target vehicle, whether the redundant power supply system of the target vehicle meets at least one preset failure mode is judged; if yes, predicting that a redundant power supply system of the target vehicle generates or is about to generate failure fault, and feeding back a prediction result of the failure fault to a user by utilizing a power supply network protection module; if not, predicting that the redundant power supply system of the target vehicle does not generate failure fault, and controlling the target vehicle to normally run. Therefore, the prediction accuracy of failure faults of the redundant power supply system of the target vehicle can be effectively improved, and the driving experience of a user is improved.

Drawings

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

Fig. 1 is a schematic structural diagram of a conventional fuel redundant power supply system according to an embodiment of the present application;

FIG. 2 is a flowchart of a method for predicting failure faults of a redundant power supply system of a vehicle according to an embodiment of the present application;

FIG. 3 is a schematic diagram of a discharge test terminal voltage graph according to an embodiment of the present disclosure;

fig. 4 is a schematic diagram of a device for predicting failure faults of a redundant power supply system of a vehicle according to an embodiment of the present application.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

Currently, for a passenger car using a 12V power supply system, a related electric energy supply and demand system is formed by the 12V power supply of the whole car and the electric appliances of the whole car, and the system is very important in relation to the starting performance of the car, the comfort performance related to the electric appliances, even the safety performance. The intelligent and networking has become an important trend in the development of the automobile industry, and along with the continuous improvement of the intelligent and networking demands of the industry, the power supply system of the whole automobile must be correspondingly adjusted and upgraded.

At present, most traditional vehicles are only power supply systems of a single-path main power supply, and a 12V storage battery and a node of a 12V generator output to a rear-stage load in a single-path power supply network of the vehicles have a working condition of single-point failure. The failure of the node can cause that the electronic modules such as the later-stage BCM, GW/CCP, EPS and the like lose the KL30 constant-power supply, and then the multi-function failure of the whole vehicle is brought. The functions of steering assistance, engine control, brake control and the like are out of control, and the personal injury to drivers and passengers is serious. Aiming at the problem, the power supply system needs to ensure that when the vehicle fails inside under the condition that a driver does not intervene in the whole vehicle control, the key functional module of the power supply system can normally run for more than 5s, and the corresponding whole vehicle power supply system also needs to meet the requirements. Therefore, a standby power supply is required to supply power to loads such as EPS and ESP, and driving safety of the vehicle is ensured.

In this regard, in order to ensure the safety of self-driving power supply, a redundant power supply system is newly added, as shown in fig. 1. When the power supply system of the vehicle has an electrical fault in the automatic driving process, the redundant power supply system can protect the main circuit and isolate the fault, the redundant circuit supplies power to key parts temporarily, the vehicle is prevented from being out of control, the vehicle is informed to exit from the automatic driving mode, and the safety of a person and the vehicle is ensured. The redundant power supply system also means that the main circuit and the redundant circuit need to be monitored, so that the output performance can meet the working requirements of driving safety related loads in the period of short power supply of key parts, and the risk of vehicle out of control caused by unsatisfied voltage is avoided.

However, the existing scheme is not accurate and perfect enough to predict failure faults of a redundant power supply system, has insufficient scene coverage, is often judged only from one aspect of undervoltage, overvoltage, overcurrent and short circuit, is not comprehensive enough and lacks fusion, and also lacks prediction of failure faults in the period of time for working of a future redundant circuit. If a voltage drop occurs during this period, the operating requirements for driving safety-related loads are not met, the redundant power supply system will fail, and the vehicle is at risk of running away.

Based on the prediction, the prediction method, the prediction device and the prediction equipment for the failure fault of the redundant power supply system of the vehicle can effectively improve the prediction accuracy and improve the driving experience of a user.

The following describes in detail a method for predicting failure faults of a redundant power supply system of a vehicle according to an embodiment of the present application with reference to the accompanying drawings. Referring to fig. 2, which is a flowchart illustrating an embodiment of a method for predicting failure faults of a redundant power supply system of a vehicle according to an embodiment of the present application, the embodiment may include the following steps:

s201: acquiring a power supply voltage and a power supply current of a target vehicle; wherein the target vehicle comprises a redundant power supply system; the redundant power supply system comprises a power supply network protection module.

In this embodiment, any automatic driving vehicle that utilizes the method of the embodiment of the present application to implement prediction of failure fault of the redundant power supply system is defined as a target vehicle, in order to implement prediction of failure fault of the redundant power supply system of the target vehicle, to improve prediction accuracy and driving experience of a user, the present application proposes that power supply voltage and power supply current of the target vehicle need to be obtained first, so as to execute a subsequent step S202.

It should be noted that, in order to solve the problem that the power supply system of the single-path main power supply in the target vehicle fails due to node failure, the whole vehicle of the target vehicle is preset to use the redundant power supply system, that is, the target vehicle includes the redundant power supply system. And the redundant circuit needs to be connected in parallel with the main circuit, and meanwhile, in order to ensure that the redundant power supply system has the capability of feeding back faults, the power supply network protection module is arranged in the power supply redundant power supply system in advance, and the full-coverage prediction of the failure faults of the redundant power supply system is realized by using the power supply network protection module through executing the subsequent steps S202-S204.

S202: and judging whether the redundant power supply system of the target vehicle meets at least one preset failure mode according to the power supply voltage and the power supply current of the target vehicle.

In this embodiment, in order to implement prediction of failure faults of the redundant power supply system of the target vehicle, improve prediction accuracy and driving experience of the user, after obtaining the power supply voltage and the power supply current of the target vehicle through step S201, it may be further determined whether the redundant power supply system of the target vehicle meets at least one preset failure mode according to the power supply voltage and the power supply current of the target vehicle. If yes, the following step S203 is executed, if no, the following step S204 is executed.

S203: if yes, predicting that the redundant power supply system of the target vehicle generates or is about to generate failure fault, and feeding back a prediction result of the failure fault to a user by utilizing the power supply network protection module.

In this embodiment, if it is determined that the redundant power supply system of the target vehicle meets at least one preset failure mode according to the power supply voltage and the power supply current of the target vehicle, it may be predicted that the redundant power supply system of the target vehicle generates or is about to generate a failure fault, and a prediction result of the corresponding failure fault is fed back to the user by using the power network protection module.

S204: if not, predicting that the redundant power supply system of the target vehicle does not generate failure fault, and controlling the target vehicle to normally run.

In this embodiment, if it is determined that the redundant power supply system of the target vehicle does not meet at least one preset failure mode according to the power supply voltage and the power supply current of the target vehicle, it may be predicted that the redundant power supply system of the target vehicle does not generate a failure fault, and the target vehicle is controlled to perform normal running.

Specifically, an alternative implementation manner is that the preset failure mode may include an under-voltage failure mode, an over-loss failure mode, a short-circuit failure mode, a voltage drop failure mode, and a cable drop failure mode. Through the 6 preset failure modes, the full coverage of the failure modes can be realized, and the algorithm is integrated into the power network protection module, so that the redundant power supply system has fault feedback capability, the safety of the automatic driving system is comprehensively improved, and a user is ensured to obtain better driving experience.

In the undervoltage failure mode, undervoltage can cause the electrical appliance of the connected safety load to fail, and the situation is avoided. The occurrence of the undervoltage failure mode may be due to momentary opening of a large load, starting of the vehicle, or a short circuit in the circuit. The off-time of the module at different undervoltages is different, see table 1 below:

under-voltage U/V	Under-voltage off time t
		<A	T1
<B	T2
		<C	T3

TABLE 1

The undervoltage failure mode is divided into A, B, C three gears according to undervoltage, when the voltage is reduced to A gear, the timing is performed according to time T1 of A gear, in an A gear timing interval, the voltage is reduced to B gear, the A gear time T1 and the B gear time T2 are simultaneously timed, when the disconnection time of one gear is met, the power supply network protection module is disconnected, and the prediction result of the undervoltage failure fault is fed back to a user; in the A-gear timing interval, the voltage drops to the C gear, the A-gear time T1, the B-gear time T2 and the C-gear time T3 are timed at the same time, and when the disconnection time of one gear is met, the power supply network protection module is disconnected and feeds back the prediction result of the undervoltage failure fault to a user.

In the overvoltage failure mode, overvoltage causes the connected safety load to fail, which should be avoided. The occurrence of overvoltage failure modes may be due to momentary shut down of large loads, power plant failure, etc. The modules were disconnected for different times at different overvoltages, see table 2 below:

overvoltage voltage U/V	Overvoltage off time t
		>A	T1
>B	T2
		>C	T3

TABLE 2

The overvoltage failure mode is divided into A, B, C three gears according to overvoltage voltage, when the voltage rises to A gear, the voltage is timed according to time T1 of the A gear, in a timing interval of the A gear, the voltage rises to B gear, the time T1 of the A gear and the time T2 of the B gear are timed at the same time, when the disconnection time of one gear is met, the power network protection module is disconnected, and the prediction result of the overvoltage failure fault is fed back to a user; in the A-gear timing interval, the voltage rises to the C-gear, the A-gear time T1, the B-gear time T2 and the C-gear time T3 are simultaneously timed, and when the disconnection time of one gear is met, the power network protection module is disconnected and feeds back the prediction result of the overvoltage failure fault to a user.

In the over-current failure mode, the over-current will cause damage to the module itself, which should be avoided. The excessive loss of efficiency mode may occur due to too large a load current, a short circuit in the loop, etc. The off-time varies at different overcurrents, depending on the capacity of the module to carry the passing current, see table 3 below:

overcurrent I/A	Overcurrent off time t
		>A	T1
>B	T2
		>C	T3

TABLE 3 Table 3

The overcurrent and efficiency loss mode is divided into three steps A, B, C according to overcurrent, when the current rises to the A step, the current is timed according to the time T1 of the A step, in the A step timing interval, the current rises to the B step, the A step time T1 and the B step time T2 are timed at the same time, when the disconnection time of one step is met, the power network protection module is disconnected, and the prediction result of the overcurrent and efficiency loss fault is fed back to a user; in the A-gear timing interval, the current rises to the C-gear, the A-gear time T1, the B-gear time T2 and the C-gear time T3 are timed at the same time, and when the disconnection time of one gear is met, the power supply network protection module is disconnected and feeds back the prediction result of the loss effect fault to a user.

In the short-circuit failure mode, under-voltage and over-current are required to be detected simultaneously, and the under-voltage disconnection time and the over-current disconnection time are firstly met and then are firstly disconnected.

In the voltage drop failure mode, the voltage drop failure mode may include a situation that the target vehicle has a voltage drop after a preset time, and the specific implementation process of the steps S202 and S203 may include judging whether the redundant power supply system of the target vehicle meets the voltage drop failure mode according to the power supply voltage and the power supply current of the target vehicle, if so, predicting a failure fault that the redundant power supply system of the target vehicle will have a voltage drop after the preset time, and feeding back a prediction result of the failure fault to a user by using the power supply network protection module.

Specifically, for predicting the voltage drop failure mode, it is necessary to predict the voltage drop of the storage battery after a preset time (e.g., 5 seconds) of kl30 and kl30_r ends in the target vehicle, where the voltage drop of kl30_r end may cause failure of the redundant power supply system, the voltage does not meet the working requirement of driving safety related loads, and the vehicle is at risk of out of control.

It can be understood that in the driving process, the storage battery has two states of charge and discharge. When in charging, the electrode capacity is polarized to generate polarized internal resistance, so that the true value of the electrode can not be measured, and the voltage can be suddenly raised through a regen mode to generate a voltage difference and a current difference, so that the charging internal resistance can be calculated. And under the discharge working condition, the voltage difference and the current difference during starting can be selected to calculate the discharge internal resistance.

According to the battery discharge test, the discharge was performed at 780A for 12S, then the discharge was stopped for 15S, and then the discharge was continued at 400A, and the relationship between the output terminal voltage and time was as shown in fig. 3.

As can be seen from fig. 3, the terminal voltage and the discharge current at the discharging moment of the battery are in a linear relationship, and the following formula is satisfied when the battery is discharged:

wherein U represents the voltage across the load; e represents the battery voltage; i represents a current;

representing the internal resistance of the storage battery during discharging; from the linear relationship, we can get->

The calculation formula of (2) is as follows:

wherein U is _C Representing the voltage at two ends of the load at the moment of discharging; u (U) ₀ Representing the voltage across the load before discharge; i _C A current representing the discharge instant; i ₀ Indicating the current before discharge.

In the actual driving process, most of the time is in a charging working condition, and the following formula is satisfied when the storage battery is charged:

wherein, similarly to the discharging, the charging is performed

The calculation formula of (2) is as follows:

wherein U is ^* Representing the sudden rise in voltage, the resulting voltage difference, I ^* Indicating a sudden rise in voltage, resulting in a current difference.

The following calculation formula can be obtained:

the specific value of the internal resistance of the storage battery during charging can be determined by the formula (4).

When the storage battery is continuously discharged with constant current and the voltage is more than 8.5V, the current terminal voltage and current are the same as the terminal voltage and current after the preset time (such as 5 s) according to the terminal voltage curve. Therefore, the terminal voltage after a preset time (e.g., 5 s) is calculated as follows:

thereby making it proper U _Prediction ≥U _{Threshold value} When the terminal voltage after the preset time (for example, 5 s) is not less than the preset voltage threshold, it can be judged that voltage drop does not occur after the preset time (for example, 5 s); when U is _Prediction ＜U _{Threshold value} When the terminal voltage after the preset time (for example, 5 s) is smaller than the preset voltage threshold, it can be judged that voltage drop occurs after the preset time (for example, 5 s), and the power supply network protection module is required to feed back the prediction result of the failure fault of the voltage drop after the preset time (for example, 5 s) to the user.

In the cable-drop failure mode, the battery cable-drop failure refers to the hardware failure of the self-driving power supply system, and is caused by the cable drop of the battery at the KL30 and KL30_R ends. It should be noted that whether the battery cable is detached can be determined by the obtained power supply current and voltage of the battery, for example, if the battery cable is detached, no current passes through the battery.

In this way, by executing the steps S201 to 204, the failure prediction of the redundant power supply system of the target vehicle can be accurately and perfectly divided, and the full coverage judgment can be performed from the aspects of undervoltage, overvoltage, overcurrent, short circuit, voltage drop and cable drop of the redundant power supply system, which not only includes the judgment of the current state of the redundant power supply system, but also covers the prediction of the voltage drop failure of the period of time for the future redundant circuit to work. Therefore, the safety and reliability of the redundant power supply system can be effectively improved, the user experience is improved, and the perception of the user to the automatic driving system is increased.

In summary, the method for predicting failure faults of a redundant power supply system of a vehicle provided in this embodiment first obtains a power supply voltage and a power supply current of a target vehicle; wherein the target vehicle comprises a redundant power supply system; the redundant power supply system comprises a power supply network protection module, and then, according to the power supply voltage and the power supply current of the target vehicle, whether the redundant power supply system of the target vehicle meets at least one preset failure mode is judged; if yes, predicting that a redundant power supply system of the target vehicle generates or is about to generate failure fault, and feeding back a prediction result of the failure fault to a user by utilizing a power supply network protection module; if not, predicting that the redundant power supply system of the target vehicle does not generate failure fault, and controlling the target vehicle to normally run. Therefore, the prediction accuracy of failure faults of the redundant power supply system of the target vehicle can be effectively improved, and the driving experience of a user is improved.

Referring to fig. 4, an embodiment of a device for predicting a failure fault of a redundant power supply system of a vehicle may include:

an acquisition unit 401 for acquiring a power supply voltage and a power supply current of the target vehicle; the target vehicle comprises a redundant power supply system; the redundant power supply system comprises a power supply network protection module;

a judging unit 402, configured to judge whether a redundant power supply system of the target vehicle meets at least one preset failure mode according to a power supply voltage and a power supply current of the target vehicle;

a first prediction unit 403, configured to predict that a failure fault is generated or will be generated in the redundant power supply system of the target vehicle if it is determined that the redundant power supply system of the target vehicle meets at least one preset failure mode, and feed back a prediction result of the failure fault to a user by using the power network protection module;

and the second prediction unit 404 is configured to predict that the redundant power supply system of the target vehicle does not generate a failure fault if it is determined that the redundant power supply system of the target vehicle does not satisfy at least one preset failure mode, and control the target vehicle to perform normal running.

In some possible implementations of the present application, the preset failure mode includes an under-voltage failure mode, an over-loss failure mode, a short-circuit failure mode, a voltage drop failure mode, and a cable drop failure mode.

In some possible implementations of the present application, the preset failure mode includes a voltage drop failure mode; the voltage drop failure mode comprises the condition that the target vehicle has voltage drop after preset time; the judging unit 402 is specifically configured to:

the first prediction unit 403 is specifically configured to:

In some possible implementations of the present application, the preset time is 5 seconds.

As can be seen from the above embodiments, the prediction device for failure fault of the redundant power supply system of a vehicle provided in the embodiments of the present application first obtains a power supply voltage and a power supply current of a target vehicle; wherein the target vehicle comprises a redundant power supply system; the redundant power supply system comprises a power supply network protection module, and then, according to the power supply voltage and the power supply current of the target vehicle, whether the redundant power supply system of the target vehicle meets at least one preset failure mode is judged; if yes, predicting that a redundant power supply system of the target vehicle generates or is about to generate failure fault, and feeding back a prediction result of the failure fault to a user by utilizing a power supply network protection module; if not, predicting that the redundant power supply system of the target vehicle does not generate failure fault, and controlling the target vehicle to normally run. Therefore, the prediction accuracy of failure faults of the redundant power supply system of the target vehicle can be effectively improved, and the driving experience of a user is improved.

Further, the embodiment of the application also provides a prediction device for failure faults of a redundant power supply system of a vehicle, which comprises: a processor, memory, system bus;

the processor and the memory are connected through the system bus;

Further, the embodiment of the application also provides a computer readable storage medium, wherein the computer readable storage medium stores instructions, and when the instructions run on the terminal equipment, the terminal equipment is caused to execute any implementation method of the method for predicting the failure fault of the redundant power supply system of the vehicle.

From the above description of embodiments, it will be apparent to those skilled in the art that all or part of the steps of the above described example methods may be implemented in software plus necessary general purpose hardware platforms. Based on such understanding, the technical solutions of the present application may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a storage medium, such as a ROM/RAM, a magnetic disk, an optical disk, etc., including several instructions to cause a computer device (which may be a personal computer, a server, or a network communication device such as a media gateway, etc.) to perform the methods described in the embodiments or some parts of the embodiments of the present application.

It should be noted that, in the present description, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different manner from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.

It is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for predicting failure faults of a redundant power supply system of a vehicle, comprising:

2. The method of claim 1, wherein the predetermined failure mode comprises an under-voltage failure mode, an over-loss failure mode, a short circuit failure mode, a voltage drop failure mode, a cable drop failure mode.

3. The method of claim 2, wherein the preset failure mode comprises a voltage drop failure mode; the voltage drop failure mode comprises the condition that the target vehicle has voltage drop after preset time; the determining whether the redundant power supply system of the target vehicle meets at least one preset failure mode according to the power supply voltage and the power supply current of the target vehicle comprises:

4. A method according to claim 3, wherein the preset time is 5 seconds.

5. A vehicle redundant power supply system failure prediction apparatus, comprising:

6. The apparatus of claim 5, wherein the predetermined failure mode comprises an under-voltage failure mode, an over-loss failure mode, a short circuit failure mode, a voltage drop failure mode, a cable drop failure mode.

7. The apparatus of claim 6, wherein the preset failure mode comprises a voltage drop failure mode; the voltage drop failure mode comprises the condition that the target vehicle has voltage drop after preset time; the judging unit is specifically configured to:

the first prediction unit is specifically configured to:

8. The apparatus of claim 7, wherein the preset time is 5 seconds.

9. A prediction apparatus of a failure of a redundant power supply system of a vehicle, comprising: a processor, memory, system bus;

the processor and the memory are connected through the system bus;

the memory is for storing one or more programs, the one or more programs comprising instructions, which when executed by the processor, cause the processor to perform the method of any of claims 1-4.

10. A computer readable storage medium, characterized in that the computer readable storage medium has stored therein instructions, which when run on a terminal device, cause the terminal device to perform the method of any of claims 1-4.