CN114771554A

CN114771554A - Method and apparatus for diagnosing drive power limit failure

Info

Publication number: CN114771554A
Application number: CN202210467702.5A
Authority: CN
Inventors: 姜鹏翰; 李想; 刘元治; 梁赫奇; 赵开成
Original assignee: FAW Group Corp
Current assignee: FAW Group Corp
Priority date: 2022-04-29
Filing date: 2022-04-29
Publication date: 2022-07-22

Abstract

The embodiment of the disclosure provides a method, a device, a storage medium and an electronic device for diagnosing a driving power limitation fault, wherein the method comprises the following steps: acquiring detection information from a vehicle sensor and/or failure information of at least one component; judging whether a driving power limitation fault exists or not based on the detection information and/or the fault information; and prompting the driving power limitation fault when the driving power limitation fault exists. The embodiment of the disclosure enables the diagnosis of the driving power limitation fault to have a unified and comprehensive standard, and can prompt a driver in time when the driving power limitation fault occurs, so as to avoid violent driving, thereby ensuring driving safety.

Description

Method and apparatus for diagnosing drive power limit failure

Technical Field

The embodiment of the disclosure relates to the technical field of vehicle fault diagnosis, and in particular relates to a method and a device for diagnosing a driving power limitation fault, a storage medium and an electronic device.

Background

When an electric vehicle runs daily, a fault of "driving power limitation" sometimes occurs, and the fault may cause the power of the vehicle to decrease, the vehicle cannot accelerate, and further the vehicle cannot reach the expected speed of the driver. When a malfunction occurs, if the driver drives violently, the degree of limitation of the drive power may be increased or the time for which the drive power is limited may be prolonged. If the driver tries to overtake at this time, the overtaking may fail due to insufficient power, and even the collision with the oncoming vehicle occurs, which seriously threatens the safety of the driver and passengers.

Besides, the related national standards also make clear regulations on the necessity and prompting mode of the fault prompting of the drive power limit. For example, the national standards for the people's republic of China GB18384-2020 electric vehicle safety requirements, section 5.2.2.1 for Power reduction prompt states that "when a restriction or reduction in drive power affects the driving of a vehicle, the driver should be prompted by a distinct signaling device (e.g. an acoustic or optical signal). For another example, in section 4.1 of the national standard GB/T4094.2-2017 for the people's republic of China, the signs of the operating parts, indicators and signaling devices of the electric vehicle, the signs and the signs shall be indicated if the electric vehicle is equipped with the operating parts, indicators and signaling devices of the electric vehicle listed in Table 1. The designation should be in accordance with the provisions of this section ". FIG. 1 shows a section of GB/T4094.2-2017, and the description of the drive power limit is shown in FIG. 1. Whether from the perspective of promoting driver's driving experience, or from the perspective of following national standard, all it is necessary when this trouble takes place, send timely warning to the driver, indicate the driver, drive power is limited, avoid violent driving, pay attention to driving safety etc.. However, there is no unified and comprehensive standard in the prior art for diagnosing the drive power limiting fault.

Disclosure of Invention

In view of the above deficiencies of the prior art, embodiments of the present disclosure provide a method and an apparatus for diagnosing a driving power limitation fault, a storage medium, and an electronic device, so as to solve the problem that there is no unified and comprehensive standard for diagnosing the driving power limitation fault in the prior art.

In order to solve the technical problem, the embodiment of the present disclosure adopts the following technical solutions:

a diagnostic method of a drive power limit fault, comprising:

acquiring detection information from a vehicle sensor and/or failure information of at least one component;

judging whether a driving power limitation fault exists or not based on the detection information and/or the fault information;

and prompting the driving power limitation fault when the driving power limitation fault exists.

In some embodiments, the sensors include at least one of a sensor for coolant level, a sensor for coolant temperature, a sensor for coolant circulating water pump, a sensor for electric machine cooling water pump, a sensor for cooling fan.

In some embodiments, obtaining fault information for at least one component comprises:

collecting control information of at least one controller of the vehicle;

and acquiring fault information of at least one component based on the control information.

In some embodiments, the controller includes at least one of a motor controller and a battery controller, and the component includes at least one of a drive motor and a power battery.

In some embodiments, the manner of alerting the drive power limit failure comprises at least one of an audible alert, a visual alert, a vibratory alert.

In some embodiments, the visual cue comprises a projection or a mobile-end push.

In some embodiments, further comprising:

and storing a fault code of the driving power limitation fault when the driving power limitation fault exists.

The present disclosure also provides a diagnostic apparatus of a driving power limitation fault, which includes:

the acquisition module is used for acquiring detection information from a vehicle sensor and/or fault information of at least one component;

the judging module is used for judging whether a driving power limiting fault exists or not based on the detection information and/or the fault information;

and the prompting module is used for prompting the driving power limitation fault under the condition that the driving power limitation fault exists.

The embodiment of the present disclosure further provides a storage medium storing a computer program, where the computer program is executed by a processor to implement the steps of any one of the methods described above.

The present disclosure also provides an electronic device, at least comprising a memory and a processor, wherein the memory has a computer program stored thereon, and the processor implements the steps of any one of the above methods when executing the computer program on the memory.

The beneficial effects of this disclosed embodiment lie in: the embodiment of the disclosure enables the diagnosis of the driving power limitation fault to have a unified and comprehensive standard, and can prompt a driver in time when the driving power limitation fault occurs, so as to avoid violent driving, thereby ensuring driving safety.

Drawings

In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments described in the present disclosure, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a signal diagram of a driving power limiting fault in the national standard GB/T4094.2-2017;

FIG. 2 is a schematic step diagram of a method for diagnosing a drive power limiting fault according to an embodiment of the present disclosure;

fig. 3 is a schematic step diagram of a method for diagnosing a driving power limitation fault according to an embodiment of the present disclosure.

Detailed Description

Various aspects and features of the disclosure are described herein with reference to the drawings.

It should be understood that various modifications may be made to the embodiments of the present application. Accordingly, the foregoing description should not be considered as limiting, but merely as exemplifications of embodiments. Other modifications will occur to those skilled in the art within the scope and spirit of the disclosure.

The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the disclosure and, together with a general description of the disclosure given above, and the detailed description of the embodiments given below, serve to explain the principles of the disclosure.

These and other characteristics of the present disclosure will become apparent from the following description of preferred forms of embodiment, given as a non-limiting example, with reference to the attached drawings.

It should also be understood that, although the present disclosure has been described with reference to some specific examples, a person of skill in the art shall certainly be able to achieve many other equivalent forms of the disclosure, having the characteristics as set forth in the claims and hence all coming within the field of protection defined thereby.

The above and other aspects, features and advantages of the present disclosure will become more apparent in view of the following detailed description when taken in conjunction with the accompanying drawings.

Specific embodiments of the present disclosure are described hereinafter with reference to the drawings; however, it is to be understood that the disclosed embodiments are merely exemplary of the disclosure that may be embodied in various forms. Well-known and/or repeated functions and structures have not been described in detail so as not to obscure the present disclosure with unnecessary or unnecessary detail. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present disclosure in virtually any appropriately detailed structure.

The description may use the phrases "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," which may each refer to one or more of the same or different embodiments in accordance with the disclosure.

The disclosed embodiment focuses on solving the problem of diagnosis, identification and prompt of the driving power limitation fault existing in the vehicle, and is suitable for all vehicles such as pure electric vehicles and hybrid vehicles at present. A first embodiment of the present disclosure provides a method for diagnosing a driving power limitation fault, which may be implemented by a Vehicle Control Unit (VCU), and the VCU receives signals of various controllers and sensors on a vehicle and performs corresponding logic analysis, so as to determine whether the vehicle is currently in a driving power limitation fault state, and simultaneously sends a control instruction to a relevant actuator for fault processing. Of course, other control methods capable of executing the present embodiment, that is, a controller capable of receiving and processing signals from various controllers or sensors to determine whether the current driving power limitation fault state exists may be used instead of the VCU, and are not limited to a certain controller.

As shown in fig. 2, the method for diagnosing a driving power limitation fault according to an embodiment of the present disclosure includes the steps of:

s101, detection information from a vehicle sensor and/or fault information of at least one component is acquired.

In this step, detection information from a vehicle sensor and/or failure information of at least one component is acquired. The purpose of this step is to determine whether there is a power limiting fault in the vehicle by means of detection information of the vehicle sensors and/or fault information of at least one component.

Further, the vehicle sensor herein may be a sensor that collects any parameter in the running state of the vehicle. Considering that the level of coolant, the temperature of the coolant, the state of the coolant circulation pump, the state of the motor cooling water pump, the state of the cooling fan, and the like of the vehicle may be related to the power limitation fault in order to determine whether the vehicle has the power limitation fault, the vehicle sensors include at least one of a sensor for the level of the coolant, a sensor for the temperature of the coolant, a sensor for the coolant circulation pump, a sensor for the motor cooling water pump, and a sensor for the cooling fan.

Further, as shown in fig. 3, the step of acquiring the fault information of at least one component includes:

s201, collecting control information of at least one controller of the vehicle.

In this step, control information of at least one controller of the vehicle is collected. The components herein include at least one of a drive motor and a power battery. It is considered that the state information of the main components on the vehicle can be judged by a signal of a controller, and for this purpose, the controller includes at least one of a motor controller and a battery controller. The motor controller (MCU for short) is used for monitoring the current state of the driving motor and feeding back state information such as current, voltage and the like to the vehicle control unit in real time; the battery controller (BMS for short) is used for monitoring the current state of the battery and feeding back state information such as voltage, temperature and the like to the vehicle control unit in real time; specifically, signals of each controller, such as a motor controller, a battery controller and the like, or other related sensors are collected, and the collected signals are reported and input to the vehicle control unit.

S202, acquiring fault information of at least one component based on the control information.

In this step, failure information of at least one of the components is acquired based on the control information. The failure information of the components herein may refer to, for example, failures of the drive motor and the power battery. The faults herein can be broadly divided into body faults and non-body faults, wherein the body faults refer to direct faults caused by abnormality of hardware and structure thereof, and the non-body faults refer to indirect faults caused by body faults or faults of other parts and induced faults. Here, the failure information of the driving motor or the power battery can be determined by the control information of the driving motor or the power battery. For example, whether the driving motor has a fault can be judged through the voltage value, and whether the power battery has a fault can be judged through the temperature value.

And S102, judging whether the driving power limitation fault exists or not based on the detection information and/or the fault information.

After the detection information from the vehicle sensor and/or the failure information of at least one component is acquired through step S101, in this step, it is determined whether or not there is a driving power limitation failure based on the detection information and/or the failure information.

Specifically, detection information of a current vehicle sensor and failure information of the drive motor and/or the power battery, for example, are received by the vehicle control unit, for example, to determine whether the vehicle is in a failure state of drive power limitation.

Specifically, in this step, whether the fault information of the driving power limitation fault needs to be reported at present is comprehensively determined mainly by analyzing the working state of the driving motor and/or the power battery and the input signals related to various vehicle sensors.

When the driving motor and/or the power battery work, a plurality of types of faults may occur, such as faults of bodies of all stages of each assembly, performance faults, temperature abnormality of cooling liquid of the sensor and the like, and the details are shown in the following table.

Sensor related signal	Front/rear driving motor	Power battery
			Low coolant level	Failure of each stage of body of driving motor	Failure of each stage of power battery body
Over-temperature of cooling liquid	Over-temperature of driving motor	Abnormal temperature of power battery cell
			Low cooling liquid temperature	——	Power battery average temperature anomaly
Motor cooling water pump failure	——	Power battery voltage anomaly
			Failure of cooling fan	——	——
Failure of coolant circulating pump	——	——

Therefore, the vehicle controller needs to comprehensively judge and analyze whether the driving power limitation fault exists at present based on the control signals of the motor controller and/or the battery controller and the like and the signals reported by the related sensors. Here, whether or not the driving power limitation fault exists may be determined individually according to the control information, or may be comprehensively determined based on the control information and information collected by the vehicle sensor. The judgment standard can also be set for the working states of different vehicle types or different components such as a driving motor, a power battery and the like.

For example, when the sensor for the coolant temperature detects that the coolant temperature is too high and the sensor for the motor-cooling water pump detects that the motor-cooling water pump is out of order, the system temperature of the powertrain is too high, which may cause a limitation in driving power. For example, when the motor controller determines that the driving motor has a fault of an excessive temperature and a sensor for the cooling fan detects that the cooling fan has a fault, the temperature of the system of the powertrain may be excessively high, which may cause a limitation of the driving power. The drive power limitation fault here may be based on the control signal of the motor controller and/or the battery controller, etc. and the signal reported by the relevant sensor, and different combinations of the judgment criteria may be selected as needed.

S103, prompting the driving power limitation fault when the driving power limitation fault exists.

In this step, when the drive power limit failure exists, the drive power limit failure is presented. The manner of prompting the driving power limitation fault here includes at least one of an audio prompt, a visual prompt, and a vibration prompt. The visual prompt can be realized through an instrument display, and other devices which can respond to the control of the controller and simultaneously prompt an operator, such as holographic projection, mobile terminal pushing and the like, can replace the instrument display and the controller thereof.

Therefore, if the driving power limitation fault is detected, the corresponding actuator is controlled to store the fault code corresponding to the driving power limitation fault, and the current fault state of the driver can be reminded. Specifically, in one embodiment, when the vehicle control unit determines that a corresponding fault exists according to the reported control signal or detection signal, the control instrument may display a corresponding fault icon according to the national standard GB/T4094.2-2017, send an alarm sound, and prompt a text, prompt a driver that the driving power is limited, pay attention to driving safety, and the like.

In addition, the factors causing the driving power limiting fault can be many, and some faults can be slowly recovered automatically without human intervention, such as faults of over-temperature type and low-temperature type. Some instruments cannot automatically recover, the faults can be removed only by human intervention, and for the faults which cannot be automatically recovered, other more serious and striking fault prompts are usually given to the instruments.

In another embodiment, further comprising:

and storing a fault code of the driving power limitation fault when the driving power limitation fault exists. That is, the fault code may be stored by the vehicle control unit after it is determined that the driving power limitation fault exists, that is, when the fault occurs, the fault code is stored by, for example, a storage module, so that a driver may inquire about a historical fault or a maintenance worker may troubleshoot the fault, where the storage module is usually integrated in the vehicle control unit or the meter display controller.

The embodiment of the disclosure enables the diagnosis of the driving power limitation fault to have a unified and comprehensive standard, and can prompt a driver in time when the driving power limitation fault occurs, so as to avoid violent driving, thereby ensuring driving safety.

A second embodiment of the present disclosure relates to a diagnostic apparatus for limiting driving power, which includes an obtaining module, a determining module, and a prompting module, wherein the modules are coupled to each other, and wherein:

an acquisition module for acquiring detection information from a vehicle sensor and/or failure information of at least one component;

a judging module for judging whether there is a drive power limit fault based on the detection information and/or the fault information;

Further, the sensors include at least one of a sensor for coolant level, a sensor for coolant temperature, a sensor for motor cooling water pump, and a sensor for cooling fan.

The acquisition module further comprises:

a collecting unit for collecting control information of at least one controller of the vehicle;

an acquisition unit configured to acquire failure information of at least one of the components based on the control information.

Further, the controller includes at least one of a motor controller and a battery controller, and the component includes at least one of a driving motor and a power battery.

Further, the manner of prompting the driving power limitation fault comprises at least one of an audio prompt, a visual prompt and a vibration prompt.

Further, the visual cue comprises projection or mobile-end pushing.

The diagnostic device further comprises:

and the storage module is used for storing a fault code of the drive power limitation fault under the condition that the drive power limitation fault exists.

A third embodiment of the present disclosure provides a storage medium which is a computer-readable medium storing a computer program, which when executed by a processor implements the methods provided by the first and third embodiments of the present disclosure, including the following steps S11 to S13:

s11, acquiring detection information from a vehicle sensor and/or fault information of at least one component;

s12, determining whether there is a driving power limitation fault based on the detection information and/or the fault information;

and S13, when the driving power limitation fault exists, prompting the driving power limitation fault.

Further, the computer program realizes other methods provided by the first embodiment of the present disclosure when being executed by a processor

A fourth embodiment of the present disclosure provides an electronic device, which includes at least a memory and a processor, the memory having a computer program stored thereon, the processor implementing the method provided by any of the embodiments of the present disclosure when executing the computer program on the memory. Illustratively, the electronic device computer program steps are as follows S21-S23:

s21, acquiring detection information from a vehicle sensor and/or fault information of at least one component;

s22, determining whether there is a driving power limitation fault based on the detection information and/or the fault information;

and S23, when the driving power limitation fault exists, prompting the driving power limitation fault.

Further, the processor also executes the computer program in the third embodiment described above

The storage medium may be included in the electronic device; or may be separate and not incorporated into the electronic device.

The storage medium carries one or more programs that, when executed by the electronic device, cause the electronic device to: acquiring at least two internet protocol addresses; sending a node evaluation request comprising at least two internet protocol addresses to node evaluation equipment, wherein the node evaluation equipment selects the internet protocol addresses from the at least two internet protocol addresses and returns the internet protocol addresses; receiving an internet protocol address returned by the node evaluation equipment; wherein the obtained internet protocol address indicates an edge node in the content distribution network.

Alternatively, the storage medium carries one or more programs that, when executed by the electronic device, cause the electronic device to: receiving a node evaluation request comprising at least two internet protocol addresses; selecting an internet protocol address from at least two internet protocol addresses; returning the selected internet protocol address; wherein the received internet protocol address indicates an edge node in the content distribution network.

Computer program code for carrying out operations for the present disclosure may be written in any combination of one or more programming languages, including but not limited to an object oriented programming language such as Java, Smalltalk, C + +, and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the passenger computer, partly on the passenger computer, as a stand-alone software package, partly on the passenger computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the passenger computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).

It should be noted that the storage medium of the present disclosure may be a computer readable signal medium or a computer readable storage medium or any combination of the two. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples of the computer readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the present disclosure, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. In contrast, in the present disclosure, a computer readable signal medium may comprise a propagated data signal with computer readable program code embodied therein, either in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may be any storage medium that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. Program code embodied on a storage medium may be transmitted using any appropriate medium, including but not limited to: electrical wires, optical cables, RF (radio frequency), etc., or any suitable combination of the foregoing.

The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

The units described in the embodiments of the present disclosure may be implemented by software or hardware. Where the name of an element does not in some cases constitute a limitation on the element itself.

The functions described herein above may be performed, at least in part, by one or more hardware logic components. For example, without limitation, exemplary types of hardware logic components that may be used include: field Programmable Gate Arrays (FPGAs), Application Specific Integrated Circuits (ASICs), Application Specific Standard Products (ASSPs), systems on a chip (SOCs), Complex Programmable Logic Devices (CPLDs), and the like.

In the context of this disclosure, a machine-readable medium may be a tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. The machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

The foregoing description is only exemplary of the preferred embodiments of the disclosure and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the disclosure herein is not limited to the particular combination of features described above, but also encompasses other combinations of features described above or equivalents thereof without departing from the spirit of the disclosure. For example, the above features and (but not limited to) the features disclosed in this disclosure having similar functions are replaced with each other to form the technical solution.

Further, while operations are depicted in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order. Under certain circumstances, multitasking and parallel processing may be advantageous. Likewise, while several specific implementation details are included in the above discussion, these should not be construed as limitations on the scope of the disclosure. Certain features that are described in the context of separate embodiments can also be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment can also be implemented in multiple embodiments separately or in any suitable subcombination.

Although the subject matter has been described in language specific to structural features and/or methodological acts, it is to be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.

While the present disclosure has been described in detail with reference to the embodiments, the present disclosure is not limited to the specific embodiments, and those skilled in the art can make various modifications and alterations based on the concept of the present disclosure, and the modifications and alterations should fall within the scope of the present disclosure as claimed.

Claims

1. A method of diagnosing a drive power limiting fault, comprising:

2. The diagnostic method of claim 1, wherein the sensors comprise at least one of a sensor for coolant level, a sensor for coolant temperature, a sensor for coolant circulating water pump, a sensor for motor cooling water pump, a sensor for cooling fan.

3. The diagnostic method of claim 1, wherein obtaining fault information for at least one component comprises:

collecting control information of at least one controller of the vehicle;

4. The diagnostic method of claim 3, wherein the controller comprises at least one of a motor controller and a battery controller, and the component comprises at least one of a drive motor and a power battery.

5. The diagnostic method of claim 1, wherein the manner of prompting the drive power limit fault comprises at least one of an audible prompt, a visual prompt, a vibratory prompt.

6. The diagnostic method of claim 6, wherein the visual cue comprises a projection or a mobile tip push.

7. The diagnostic method of claim 1, further comprising:

8. A diagnostic apparatus for a drive power limiting fault, comprising:

9. A storage medium storing a computer program, characterized in that the computer program, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 7.

10. An electronic device comprising at least a memory, a processor, the memory having a computer program stored thereon, wherein the processor, when executing the computer program on the memory, is adapted to carry out the steps of the method of any of claims 1 to 7.