CN117565676A - Control method for vehicle driving system, vehicle and storage medium - Google Patents

Control method for vehicle driving system, vehicle and storage medium Download PDF

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Publication number
CN117565676A
CN117565676A CN202410006586.6A CN202410006586A CN117565676A CN 117565676 A CN117565676 A CN 117565676A CN 202410006586 A CN202410006586 A CN 202410006586A CN 117565676 A CN117565676 A CN 117565676A
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CN
China
Prior art keywords
vehicle
fault
driving motor
motor controller
preset
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202410006586.6A
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Chinese (zh)
Inventor
古守钦
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Chongqing Seres New Energy Automobile Design Institute Co Ltd
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Chongqing Seres New Energy Automobile Design Institute Co Ltd
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Application filed by Chongqing Seres New Energy Automobile Design Institute Co Ltd filed Critical Chongqing Seres New Energy Automobile Design Institute Co Ltd
Priority to CN202410006586.6A priority Critical patent/CN117565676A/en
Publication of CN117565676A publication Critical patent/CN117565676A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/0061—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electrical machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/0084—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to control modules
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The application relates to the technical field of vehicles, and discloses a control method of a vehicle driving system, a vehicle and a storage medium, wherein the control method comprises the following steps: acquiring current fault information of a vehicle driving system through a driving motor controller; when the driving motor controller acquires the shutdown fault information, acquiring vehicle running state information through the driving motor controller; when the vehicle meets the preset state, the driving motor controller performs fault reset to carry out fault diagnosis on the driving system of the vehicle again. Therefore, the fault misjudgment caused by abnormal operation or interference of the user can be automatically eliminated, the user is not required to actively operate, and the operation is convenient and the safety is high.

Description

Control method for vehicle driving system, vehicle and storage medium
Technical Field
The present disclosure relates to the field of vehicle technologies, and in particular, to a control method of a vehicle driving system, a vehicle, and a storage medium.
Background
For the driving motor and the driving motor controller of the new energy automobile, after a stop fault of stopping working occurs in the driving process or after high voltage, the whole automobile is subjected to power interruption or anchoring, and the driving safety is affected.
If the fault is caused by erroneous judgment or interference, the fault needs to be re-diagnosed. At present, on one hand, fault re-detection is carried out by re-electrifying, but most of existing new energy automobiles cancel the power-on and power-off buttons, and power-on and power-off control can be carried out only by clicking a large screen or voice, so that the operation of a user is inconvenient. On the other hand, the fault resetting is carried out through the client service, and professional maintenance personnel are required to operate through the client, so that the problem of anchoring caused by the fault of the driving motor controller on the user site cannot be solved in real time.
Disclosure of Invention
In view of the above problems, the present application provides a control method of a vehicle driving system, a vehicle, and a storage medium, which can automatically eliminate erroneous judgment of a fault caused by abnormal operation or interference of a user, and does not require the user to actively perform operation, and is convenient to operate and high in safety.
A first aspect of the present application provides a control method of a vehicle drive system, including: acquiring current fault information of a vehicle driving system through a driving motor controller; when the driving motor controller acquires the shutdown fault information, acquiring vehicle running state information through the driving motor controller; when the vehicle meets the preset state, the driving motor controller performs fault reset to carry out fault diagnosis on the driving system of the vehicle again.
In some embodiments, the vehicle operating state information includes a number of fault resets of the drive motor controller; a step of acquiring vehicle running state information by a driving motor controller, and a step of performing fault reset by the driving motor controller to re-perform fault diagnosis on a vehicle driving system when the vehicle satisfies a preset state, comprising: acquiring the number of fault resetting times of the current power-on driving motor controller; and when the fault resetting times are smaller than the preset times, the driving motor controller performs fault resetting.
In some embodiments, the vehicle operating state information includes a type of a shutdown failure of the vehicle drive system, the step of obtaining the vehicle operating state information by the drive motor controller, and the step of the drive motor controller performing a failure reset to re-perform a failure diagnosis of the vehicle drive system when the vehicle satisfies a preset state, comprising: acquiring a shutdown fault type of a vehicle driving system based on the shutdown fault information; and when the shutdown fault type is a preset resettable fault type, the driving motor controller performs fault resetting.
In some embodiments, the vehicle running state information includes gear information of the vehicle, the step of acquiring the vehicle running state information by the driving motor controller, and the step of performing a fault reset by the driving motor controller to re-perform a fault diagnosis on the driving system of the vehicle when the vehicle satisfies a preset state, includes: acquiring gear information of a current gear of the vehicle through a driving motor controller; when the vehicle is in a preset gear, the driving motor controller performs fault resetting; the preset gear comprises N gears and P gears.
In some embodiments, after the step of obtaining, by the driving motor controller, gear information of a current gear of the vehicle, the method further includes: when the vehicle is in N gear, the current rotating speed of the driving motor is obtained through the driving motor controller; and when the current rotating speed is smaller than the preset rotating speed, the driving motor controller carries out fault resetting.
In some embodiments, the step of driving the motor controller to perform a fault reset to re-perform a fault diagnosis on the vehicle drive system when the vehicle satisfies a preset state includes: the driving motor controller clears the current shutdown fault information and converts the shutdown fault information into historical shutdown fault information for storage; the drive motor controller re-performs fault diagnosis for the vehicle drive system.
In some embodiments, before the step of the drive motor controller clearing the current shutdown fault information and converting the shutdown fault information into historical shutdown fault information for storage, the method further comprises: after the driving motor controller acquires the shutdown fault information, the driving motor controller controls the driving motor of the vehicle driving system to stop working.
In some embodiments, the vehicle operating state information includes a number of times of failure reset of the drive motor controller, a type of shutdown failure of the vehicle drive system, and gear information of the vehicle; after the step of obtaining the vehicle running state information by the driving motor controller, the method further includes: detecting whether the fault reset times are smaller than preset times or not; if the detected fault resetting times are smaller than the preset times, detecting whether the shutdown fault type is a preset resettable fault type or not; detecting whether the vehicle is in a preset gear or not when the shutdown fault type is detected to be a preset resettable fault type; and judging whether the vehicle is in a preset gear or not by detecting, and if so, judging that the vehicle meets a preset state.
A second aspect of the present application provides a drive system, the drive system being applied to a vehicle, the drive system comprising: a driving motor; the driving motor controller is connected with the driving motor and used for acquiring current fault information of a vehicle driving system, and when the driving motor controller acquires stop fault information, the driving motor controller acquires vehicle running state information; when the vehicle meets the preset state, the driving motor controller performs fault reset to carry out fault diagnosis on the driving system of the vehicle again.
In some embodiments, the vehicle operating state information includes one or more of a number of resets of a fault of the drive motor controller, a type of a shutdown fault of the drive system, and gear information of the vehicle; the fault resetting times are smaller than the preset times, the fault type is the preset resettable fault type, and when one or more of the vehicle is in the preset gear and correspondingly met, the driving motor controller resets the fault.
A third aspect of the present application provides a vehicle comprising a drive system as claimed in any one of the preceding claims.
A fourth aspect of the present application provides a computer-readable storage medium having stored therein at least one executable instruction that, when executed on a vehicle, causes the vehicle to perform a method of controlling a vehicle drive system as in any one of the above.
The beneficial technical effect that this application possesses at least: provided are a control method of a vehicle driving system, a vehicle and a storage medium, comprising: acquiring current fault information of a vehicle driving system through a driving motor controller; when the driving motor controller acquires the shutdown fault information, the driving motor controller controls a driving motor of a vehicle driving system to stop working; and acquiring the running state information of the vehicle through the driving motor controller, and performing fault reset when the vehicle meets the preset state by the driving motor controller so as to re-perform fault diagnosis on the driving system of the vehicle. Therefore, after the driving motor controller acquires the shutdown fault information, the driving motor controller acquires the running state information of the vehicle, and then performs fault resetting when the vehicle meets the preset state, so that the vehicle driving system performs fault diagnosis on the vehicle driving system again. Therefore, the fault misjudgment caused by abnormal operation or interference of the user can be automatically eliminated, the user is not required to actively operate, and the operation is convenient and the safety is high.
The foregoing description is only an overview of the technical solutions of the embodiments of the present application, and may be implemented according to the content of the specification, so that the technical means of the embodiments of the present application can be more clearly understood, and the following detailed description of the present application will be presented in order to make the foregoing and other objects, features and advantages of the embodiments of the present application more understandable.
Drawings
The drawings are only for purposes of illustrating embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
FIG. 1 is a flow chart of an embodiment of a method of controlling a vehicle drive system provided herein;
FIG. 2 is a flow chart of another embodiment of a method of controlling a vehicle drive system provided herein;
FIG. 3 is a flow chart of yet another embodiment of a method of controlling a vehicle drive system provided herein;
FIG. 4 is a flow chart of yet another embodiment of a method of controlling a vehicle drive system provided herein;
FIG. 5 is a flow chart of yet another embodiment of a method of controlling a vehicle drive system provided herein;
FIG. 6 is a flow chart of yet another embodiment of a method of controlling a vehicle drive system provided herein;
FIG. 7 is a block diagram of one embodiment of a drive system provided herein;
FIG. 8 is a block diagram of an embodiment of a vehicle provided herein;
fig. 9 is a block diagram of an embodiment of a computer readable storage medium provided herein.
Detailed Description
Exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
If there is a description of "first," "second," etc. in an embodiment of the present application, the description of "first," "second," etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, if the meaning of "and/or" is presented throughout this document, it is intended to include three schemes in parallel, taking "a and/or B" as an example, including a scheme, or B scheme, or a scheme where a and B meet simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be regarded as not exist and not within the protection scope of the present application.
The first aspect of the present application provides a method for controlling a vehicle driving system, where the method is applied to a vehicle driving system, and the vehicle may be a new energy automobile, and the corresponding vehicle driving system includes a driving motor and a driving motor controller, where the driving motor controller is configured to implement control of the driving motor.
Fig. 1 is a flowchart of an embodiment of a control method of a vehicle driving system provided in the present application. Referring to fig. 1, the control method of the vehicle driving system provided in the present application specifically includes the following steps:
s11: the current fault information of the vehicle driving system is obtained through the driving motor controller.
After a driving motor or a driving motor controller of a vehicle driving system fails, the driving motor controller generates failure information, so that the driving motor controller reacts according to the current failure information. When the driving system has different fault information, the driving motor controller may react differently, and thus produce different effects to cope with different fault scenarios.
It should be appreciated that the vehicle drive system may fail during various periods of operation, thereby causing the drive motor controller to generate fault information. The corresponding fault information at the current time is current fault information, and the driving motor controller can react to the current fault information. After the driving motor controller reacts to the current fault information, the current fault information may be converted into historical fault information, and the historical fault information may be stored.
S12: and when the driving motor controller acquires the shutdown fault information, acquiring the running state information of the vehicle through the driving motor controller.
In some specific application scenarios, when the driving motor controller obtains the shutdown fault information, the driving motor of the driving system is controlled to stop working. However, in other embodiments, the drive motor may be controlled to stop operating after the shutdown fault information is obtained and before the fault reset is initiated.
It should be understood that the failure information acquired by the drive motor may be of various types, with shutdown failure information as one of them. When the driving motor controller acquires the shutdown fault information, the vehicle driving system is proved to have serious faults, and the vehicle driving system is required to be shut down at the moment to ensure the safety of vehicle operation.
In some specific application scenarios, a safety diagnosis questionnaire is preset in the driving motor controller, and a triggering precondition and a triggering condition are preset in the safety diagnosis questionnaire. When the driving motor controller judges that the driving system triggers the triggering preconditions and the triggering conditions, the driving motor controller indicates that faults corresponding to the driving preconditions and the triggering conditions occur in the driving system of the vehicle, and at the moment, the driving motor controller can generate corresponding fault information.
From the above, the shutdown fault information indicates that a large fault occurs in the vehicle driving system, and the driving motor controller controls the driving motor of the vehicle driving system to stop working, so as to ensure the working safety of the vehicle driving system. It should be understood that when the driving motor in the vehicle driving system works, the driving motor needs to be connected with high-voltage power, and power supply to the driving motor is realized through the high-voltage power. When the driving motor of the vehicle driving system is controlled to stop working, the driving motor is controlled to stop rotating, and at the moment, the driving motor can be connected into high-voltage power as usual, so that the follow-up working of the driving motor is facilitated.
It should be understood that the driving motor controller needs to be connected to the low voltage power supply when working, and the driving motor controller still keeps the low voltage power supply after controlling the driving motor to stop working, so as to keep a working state. Compared with the prior art, the prior art can electrify the whole vehicle after the power down when the fault is reset, and at the moment, the motor controller can firstly electrify the vehicle after the power down, namely, the power down is disconnected, and then electrify the vehicle after the power down, namely, the power down is connected, so that the fault reset is realized. Therefore, the control method provided by the application does not enable the driving motor controller to be powered down, and further does not need to power down the vehicle, so that fault reset is automatically and rapidly realized, and the running safety of the vehicle is ensured.
As for the operation state information of the vehicle, the operation state information of the vehicle includes current operation state information of each component of the vehicle, which can sufficiently reflect a specific operation state of the vehicle.
S13: when the vehicle meets the preset state, the driving motor controller performs fault reset to carry out fault diagnosis on the driving system of the vehicle again.
The preset state is a preset vehicle running state, and in the preset state, the vehicle can perform fault reset and running safety of the vehicle can be ensured. When the vehicle meets the preset state, the fault reset at the current moment is described, the relevant performance of the vehicle is not greatly influenced, the safety of the vehicle can be ensured, and particularly the safety of the vehicle in the driving process can be ensured. At this time, the driving motor controller performs a fault reset.
It should be appreciated that there may be a variety of operations by the drive motor controller in performing a fault reset, and that the re-fault diagnosis of the vehicle drive system may be one of a variety of operations. In combination with the above, since the drive motor controller has already detected the shutdown failure information at this time, the failure detection of the drive including the drive motor and the drive motor controller itself and thus the failure detection is realized again instead of taking the shutdown failure information that has been detected as the failure information in the reset process. In the process of re-detecting the driving system, if the previous shutdown fault is caused by abnormal operation or external interference of the user, the shutdown fault information is not detected at the moment, so that the shutdown fault caused by the abnormal operation or the external interference of the user can be eliminated.
After the driving motor controller carries out fault diagnosis on the vehicle driving system again, if the shutdown fault information acquired before is found to be caused by abnormal operation or external interference of a user, the shutdown fault information cannot be detected in the current diagnosis process, and the motor controller can directly control the driving motor to work. If the stop fault information is still detected, it indicates that the stop fault is not caused by abnormal operation or external disturbance of the user, and the stop state of the driving motor can be maintained.
It should be appreciated that the process time for the drive motor controller to re-diagnose the drive system is generally short, and the drive motor is simply stopped and not powered down, and if a shutdown fault is found to be caused by abnormal operation or external interference of a user, the operation of the drive motor can be quickly recovered, so that the vehicle can quickly re-enter a normal running state.
In summary, based on the control method of the vehicle driving system provided by the application, the driving motor controller can automatically eliminate the fault misjudgment caused by abnormal operation or interference of the user by re-implementing the fault diagnosis of the driving system, and the user is not required to actively operate, so that the vehicle is not required to stop powering down or realize operation through external server equipment, and the operation is convenient and the safety is high. In addition, the whole fault resetting process is generally shorter, so that the recovery of the vehicle driving function can be quickly realized under the condition of fault misjudgment.
Fig. 2 is a flowchart of another embodiment of a control method of a vehicle driving system provided in the present application. In some embodiments, the vehicle running state information includes a number of times of fault resetting of the driving motor controller, the driving motor controller obtains the vehicle running state information, and the step of performing fault resetting to re-perform fault diagnosis on the vehicle driving system when the vehicle meets the preset state, that is, the steps S12 and S13, includes:
s21: and obtaining the fault resetting times of the current power-on driving motor controller.
It should be understood that the number of fault resets after the current power-up of the driving motor, that is, the number of fault resets after the start of the power-up start operation and before the power-down of the driving motor.
In combination with the above, when the vehicle satisfies the preset condition, the driving motor controller may perform fault reset, and may detect a shutdown fault during the first re-diagnosis process, and further perform re-diagnosis again, thereby cycling. When the shutdown failure is a true shutdown failure, the drive motor controller may always perform a restart step, which may affect the normal operation of the drive motor controller and repeatedly perform unnecessary diagnostic processes.
S22: and when the fault resetting times are smaller than the preset times, the driving motor controller performs fault resetting.
Through the step S21, the number of fault resets after the current power-up can be obtained. In the step, the driving motor controller can perform fault resetting only when the fault resetting times are smaller than the preset times.
It should be understood that the preset number of times is preset, and when the number of times of fault resetting is smaller than the preset number of times, whether the shutdown fault is caused by erroneous judgment can be detected. When the number of times of fault reset reaches the preset number of times, the shutdown fault at the moment is not caused by misjudgment, and is likely to be a real shutdown fault, and the fault reset is not necessary to be continued.
Therefore, according to the present embodiment, it is possible to prevent the drive motor controller from being in the process of being reset all the time when the shutdown failure is a true failure.
Fig. 3 is a flow chart of still another embodiment of a control method of a vehicle driving system provided in the present application. Referring to fig. 3, in some embodiments, the vehicle running state information includes a type of a stop failure of the vehicle driving system, the vehicle running state information includes a number of times of failure reset of the driving motor controller, the driving motor controller obtains the vehicle running state information, and the driving motor controller performs the failure reset to re-perform the failure diagnosis on the vehicle driving system when the vehicle meets the preset state, that is, the steps S12 and S13 described above include:
s31: a type of a shutdown failure of the vehicle drive system is obtained based on the shutdown failure information.
It should be understood that the shutdown fault information includes various attribute information of the shutdown fault, such as current, voltage information, etc., and the type of the shutdown fault can be obtained based on the various attribute information in the shutdown fault or by other information.
S32: and when the shutdown fault type is a preset resettable fault type, the driving motor controller performs fault resetting.
It should be appreciated that the types of shutdown failure may be numerous, and that in some types of shutdown failure, failure resetting is inconvenient, otherwise the drive motor controller may be abnormally operated. For example, in some shorted shutdown faults, if the shutdown fault is a true shutdown fault, the drive motor controller may be damaged during a fault reset. When the shutdown fault is a preset resettable shutdown fault type, the driving motor controller is not abnormal in the resetting process.
Therefore, in the present embodiment, by judging whether or not the type of the shutdown failure is a resettable failure type, it can be ensured that the drive motor controller is not greatly damaged in theory during the resetting process, or the like.
Fig. 4 is a flow chart of still another embodiment of a control method of a vehicle drive system provided in the present application. Referring to fig. 4, in some embodiments, the vehicle running state information includes gear information of the vehicle, the vehicle running state information includes a number of times of fault resetting of the driving motor controller, the driving motor controller obtains the vehicle running state information, and the driving motor controller performs the fault resetting to re-perform the fault diagnosis on the driving system of the vehicle when the vehicle meets the preset state, that is, the steps S12 and S13 described above include:
s41: and acquiring gear information of the current gear of the vehicle through the driving motor controller.
The vehicle may be in different gear positions during driving or non-driving, and the vehicle drive system is in different running states when the vehicle is in different gear positions.
S42: when the vehicle is in a preset gear, the driving motor controller performs fault resetting; the preset gear comprises N gears and P gears.
That is, the drive motor controller will perform a fault reset when the vehicle is in either N or P range. It will be appreciated that the N gear is a neutral gear, i.e. a gear for use when parking briefly, which gear may be engaged while waiting for a signal or more than 30 seconds for parking, in order to cut off the power transmission between the two ends of the input and output shafts within the transmission. And when the vehicle is temporarily parked on a horizontal road, the transmission of the vehicle is in a neutral gear operation state after the vehicle is hung on the P gear, the power transmission from the engine to the output shaft is completely interrupted, and a driver does not need to shut off the running engine in a short waiting time.
No matter the vehicle is in N gear or P gear, the vehicle is in a short stopping state or in a slow motion state, and no great danger is generated when the driving motor is subjected to fault reset. Therefore, since a certain power interruption may occur during the reset process, if the vehicle is running, there is a certain risk of continuing the running due to the power loss. In this embodiment, by determining whether the vehicle is in the preset gear, the fault reset can be performed only when the vehicle is in the stopped state, and the danger generated in the fault reset process can be avoided.
Fig. 5 is a flow chart of still another embodiment of a control method of a vehicle drive system provided in the present application. In some embodiments, after the step of acquiring the gear information of the current gear of the vehicle by the driving motor controller, that is, after the step S41, the method further includes:
s51: when the vehicle is in N gear, the current rotating speed of the driving motor is obtained through the driving motor controller.
It will be appreciated that the drive motor of the vehicle may still be rotating while the vehicle is in N gear, and that the vehicle may still be in motion. In this gear, the current rotational speed of the drive motor is responsive to the driving speed of the vehicle.
S52: and when the current rotating speed is smaller than the preset rotating speed, the driving motor controller carries out fault resetting.
The preset rotating speed is preset, when the current rotating speed is smaller than the preset rotating speed, the fact that the rotating speed of the driving motor is smaller is indicated, the vehicle is subjected to fault reset at the moment, the vehicle driving system is not affected to a large extent, and the fact that the fault reset has little influence on the current performance of the vehicle can be guaranteed.
Based on the embodiment, when the vehicle is in the N gear, the current rotating speed of the driving motor is further obtained, whether fault resetting is carried out or not is further judged based on the rotating speed value of the current rotating speed, and the functional influence of the fault resetting on the vehicle can be ensured to be smaller.
In combination with the above, in some embodiments, the vehicle running state information includes a number of times of failure reset of the drive motor controller, a type of stop failure of the vehicle drive system, and gear information of the vehicle; after the step of acquiring the vehicle running state information by the driving motor controller, i.e., after step S12, the method further includes:
s1, detecting whether the fault reset times are smaller than preset times or not.
And S2, if the detected fault resetting times are smaller than the preset times, detecting whether the shutdown fault type is a preset resettable fault type.
And S3, detecting whether the vehicle is in a preset gear or not if the shutdown fault type is detected to be a preset resettable fault type.
And S4, judging that the vehicle meets the preset state if the vehicle is detected to be in the preset gear.
For the description of the preset number of times, the preset resettable failure type, and the preset gear, reference may be made to the above embodiments. Unlike the above embodiment, this embodiment sequentially determines the number of times of fault resetting, the type of fault, and the gear before performing fault resetting, and performs fault resetting when preset conditions are satisfied. By the mode, when the driving motor controller is subjected to fault reset, the probability of abnormality of the whole vehicle is small, so that the safety of the vehicle and passengers is ensured.
Fig. 6 is a flow chart of still another embodiment of a control method of a vehicle drive system provided in the present application. Referring to fig. 6, in some embodiments, the step of performing, by the driving motor controller, fault resetting to re-perform fault diagnosis on the driving system of the vehicle when the vehicle satisfies the preset state, that is, the step S13 includes:
s61: the driving motor controller clears the current shutdown fault information and converts the shutdown fault information into historical shutdown fault information for storage.
The process of the drive motor controller in performing a fault reset may include a number of steps, the present application exhibiting steps of clearing current shutdown fault information and converting to historical fault information for storage.
It should be appreciated that when the drive motor controller removes the current shutdown fault information, the drive motor controller does not shutdown control the drive motor based on the current shutdown fault information. The current shutdown fault information is converted into the historical fault information, so that the fault information can be reserved, and the follow-up process is convenient for knowing and repairing the fault information of the vehicle driving system.
Based on the above embodiment of controlling the driving motor to stop working, before the step of clearing the current shutdown fault information and converting the shutdown fault information into the historical shutdown fault information for storage, the driving motor controller further includes, before the step S61:
after the driving motor controller acquires the shutdown fault information, the driving motor controller controls the driving motor of the vehicle driving system to stop working.
At this time, the time point when the driving motor is controlled to stop working is before the current stop fault information is cleared after the stop fault information is acquired.
S62: the drive motor controller re-performs fault diagnosis for the vehicle drive system.
After the current shutdown fault information is cleared, in order to confirm whether the current shutdown fault exists truly, fault diagnosis is further conducted on the vehicle driving system, and further whether the shutdown fault exists in the vehicle driving system at the current moment is known. If no shutdown failure is detected during the re-diagnosis, it is indicated that the previous shutdown failure is caused by abnormal operation of the user or external disturbance.
A second aspect of the present application provides a drive system 70, the drive system 70 being applied to a vehicle, which may be a new energy vehicle, and fig. 7 is a block diagram of an embodiment of the drive system 70 provided herein.
Referring to fig. 7, the driving system 70 includes a driving motor 71 and a driving motor controller 72, and the driving motor controller 72 is connected to the driving motor 71.
Specifically, the driving motor 72 is configured to acquire current failure information of the vehicle driving system, and when the driving motor controller 72 acquires stop failure information, vehicle running state information is acquired by the driving motor controller 72. When the vehicle satisfies the preset condition, the drive motor controller 72 performs a fault reset to re-perform a fault diagnosis for the vehicle drive system.
In some embodiments, the vehicle operating state information includes one or more of a number of fault resets of the drive motor controller 72, a type of shutdown fault of the drive system 70, and gear information of the vehicle. For an introduction to this section, reference may be made to the contents of the above embodiments. Wherein the number of fault resets is less than the preset number, the fault type is a preset resettable fault type, and the driving motor controller 72 performs a fault reset when the vehicle is in a preset gear and one or more of the corresponding conditions are met. For example, when the vehicle running state information includes both the number of times of fault reset of the driving motor controller 72, the type of stop fault of the driving system 70, and the gear information of the vehicle, the driving motor controller 72 will perform fault reset if the number of times of fault reset is smaller than the preset number, the type of fault is a preset resettable type of fault, and the vehicle is in a preset gear.
For a further control method of the driving motor controller 72, reference may be made to the content of the above embodiment, and the description is omitted.
A third aspect of the present application provides a vehicle, fig. 8 being a block diagram of an embodiment of a vehicle 80 provided herein, as shown in fig. 8, including a drive system 70 as any of the above.
A fourth aspect of the present application provides a computer-readable storage medium 90, and fig. 9 is a block diagram of an embodiment of the computer-readable storage medium 90 provided herein.
Referring to fig. 9, the computer-readable storage medium 90 stores therein at least one executable instruction 91, which executable instruction 91, when executed on the vehicle, causes the vehicle to execute the control method of the vehicle drive system as any one of the above.
Among other things, the computer-readable storage medium 80 may include: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
In summary, according to the present application, there is provided a control method of a vehicle driving system, a vehicle and a storage medium, the method includes: acquiring current fault information of a vehicle driving system through a driving motor controller; when the driving motor controller acquires the shutdown fault information, the driving motor controller controls a driving motor of a vehicle driving system to stop working; and acquiring the running state information of the vehicle through the driving motor controller, and performing fault reset when the vehicle meets the preset state by the driving motor controller so as to re-perform fault diagnosis on the driving system of the vehicle.
Through the arrangement mode, after the driving motor controller acquires the shutdown fault information, the driving motor controller can acquire the running state information of the vehicle, and then the vehicle is subjected to fault reset when the vehicle meets the preset state, so that the vehicle driving system can carry out fault diagnosis on the vehicle driving system again. Therefore, the fault misjudgment caused by misjudgment or interference can be automatically eliminated, the user is not required to actively operate, and the operation is convenient and the safety is high.
The foregoing description is only of the optional embodiments of the present application, and is not intended to limit the scope of the patent application, and all the modifications of equivalent structures made by the descriptions and the drawings of the present application or the direct/indirect application in other related technical fields are included in the scope of the patent protection of the present application.

Claims (12)

1. A control method of a vehicle drive system, characterized by comprising:
acquiring current fault information of a vehicle driving system through a driving motor controller;
when the driving motor controller acquires the shutdown fault information, acquiring vehicle running state information through the driving motor controller;
and when the vehicle meets a preset state, the driving motor controller performs fault resetting to carry out fault diagnosis on the vehicle driving system again.
2. The method for controlling a vehicle drive system according to claim 1, wherein,
the vehicle running state information comprises the fault resetting times of the driving motor controller;
a step of acquiring vehicle running state information by the driving motor controller, and a step of performing fault reset by the driving motor controller to re-perform fault diagnosis on the vehicle driving system when the vehicle satisfies a preset state, comprising:
acquiring the number of fault resetting times of the driving motor controller after the current power-on;
and when the fault resetting times are smaller than the preset times, the driving motor controller performs fault resetting.
3. The method for controlling a vehicle drive system according to claim 1, wherein,
the vehicle running state information includes a type of stop failure of the vehicle drive system;
a step of acquiring vehicle running state information by the driving motor controller, and a step of performing fault reset by the driving motor controller to re-perform fault diagnosis on the vehicle driving system when the vehicle satisfies a preset state, comprising:
acquiring a shutdown fault type of the vehicle driving system based on the shutdown fault information;
and when the shutdown fault type is a preset resettable fault type, the driving motor controller performs fault resetting.
4. The method for controlling a vehicle drive system according to claim 1, wherein,
the vehicle running state information comprises gear information of the vehicle;
a step of acquiring vehicle running state information by the driving motor controller, and a step of performing fault reset by the driving motor controller to re-perform fault diagnosis on the vehicle driving system when the vehicle satisfies a preset state, comprising:
acquiring gear information of a current gear of the vehicle through the driving motor controller;
when the vehicle is in a preset gear, the driving motor controller performs fault resetting; the preset gear comprises an N gear and a P gear.
5. The method for controlling a vehicle drive system according to claim 4, wherein,
after the step of obtaining the gear information of the current gear of the vehicle through the driving motor controller, the method further comprises the following steps:
when the vehicle is in N gear, the current rotating speed of the driving motor is obtained through the driving motor controller;
and when the current rotating speed is smaller than the preset rotating speed, the driving motor controller carries out fault resetting.
6. The method for controlling a vehicle drive system according to claim 1, wherein,
and when the vehicle meets a preset state, the driving motor controller performs fault resetting to re-perform fault diagnosis on the vehicle driving system, and the method comprises the following steps:
the driving motor controller clears the current shutdown fault information and converts the shutdown fault information into historical shutdown fault information for storage;
the drive motor controller re-performs fault diagnosis for the vehicle drive system.
7. The method for controlling a vehicle drive system according to claim 6, wherein,
before the step that the driving motor controller clears the current shutdown fault information and converts the shutdown fault information into historical shutdown fault information for storage, the driving motor controller further comprises:
and after the driving motor controller acquires the shutdown fault information, controlling the driving motor of the vehicle driving system to stop working through the driving motor controller.
8. The method for controlling a vehicle drive system according to claim 1, wherein,
the vehicle running state information comprises the fault resetting times of a driving motor controller, the shutdown fault type of the vehicle driving system and the gear information of the vehicle;
after the step of obtaining the vehicle running state information by the driving motor controller, the method further includes:
detecting whether the fault resetting times are smaller than preset times or not;
if the fault resetting times are detected to be smaller than the preset times, detecting whether the shutdown fault type is a preset resettable fault type or not;
detecting whether the vehicle is in a preset gear or not when the shutdown fault type is detected to be a preset resettable fault type;
and judging whether the vehicle is in a preset gear or not by detecting, and judging that the vehicle meets a preset state.
9. A drive system, wherein the drive system is applied to a vehicle, the drive system comprising:
a driving motor;
the driving motor controller is connected with the driving motor and used for acquiring current fault information of a vehicle driving system, and when the driving motor controller acquires stop fault information, the driving motor controller acquires vehicle running state information; and when the vehicle meets a preset state, the driving motor controller performs fault resetting to carry out fault diagnosis on the vehicle driving system again.
10. The drive system of claim 9, wherein the drive system is configured to drive the motor,
the vehicle running state information comprises one or more of the fault resetting times of a driving motor controller, the shutdown fault type of the driving system and gear information of the vehicle;
and when the fault resetting times are smaller than the preset times, the fault type is a preset resettable fault type, and the vehicle is in a preset gear and one or more of the preset gear are met correspondingly, the driving motor controller resets the fault.
11. A vehicle, characterized in that it comprises a drive system according to claim 9 or 10.
12. A computer-readable storage medium, characterized in that at least one executable instruction is stored in the storage medium, which executable instruction, when run on a vehicle, causes the vehicle to perform the control method of the vehicle drive system according to any one of claims 1-8.
CN202410006586.6A 2024-01-02 2024-01-02 Control method for vehicle driving system, vehicle and storage medium Pending CN117565676A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202410006586.6A CN117565676A (en) 2024-01-02 2024-01-02 Control method for vehicle driving system, vehicle and storage medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202410006586.6A CN117565676A (en) 2024-01-02 2024-01-02 Control method for vehicle driving system, vehicle and storage medium

Publications (1)

Publication Number Publication Date
CN117565676A true CN117565676A (en) 2024-02-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
CN (1) CN117565676A (en)

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