Vehicle drive control method, device, system, storage medium and vehicle

Abstract

The present invention provides a vehicle drive control method, device, system, storage medium and vehicle. The vehicle drive control method includes: in the present invention, after the fault information of the electric drive system is detected, the fault level of the electric drive system corresponding to the fault information is determined according to the safety status information and fault manifestation information of the electric drive system; after the fault information of the disengagement controller is detected, the fault level of the disengagement system corresponding to the fault information is determined according to the current gear position of the disengagement controller; and the corresponding fault handling action is performed according to the disengagement system fault level and the electric drive system fault level. When any front drive system or rear drive system fails, the faulty drive system can be disengaged according to the result of the fault information judgment, and the driving capacity of the non-faulty drive system can be fully utilized, and the driving speed is not reduced, and the vehicle can travel normally, thereby improving the driving performance of the whole vehicle of the four-wheel drive system vehicle, and thus improving the driving experience.

Description

Technical Field

[0001] The present invention relates to the field of vehicle control technology, and in particular to a vehicle drive control method, device, system, storage medium and vehicle. Background Art

[0002] At present, the four-wheel drive electric system of new energy vehicles uses permanent magnet synchronous motor system for both front and rear drives. The permanent magnet synchronous motor uses permanent magnets to generate air gap magnetic field, which is different from the commutator motor that generates air gap magnetic field through the excitation coil, nor is it the same as the induction motor that uses the excitation component of the stator current to generate the air gap magnetic field. It has a simple structure, low loss and high efficiency.

[0003] In the related art, when the front drive system or the rear drive system fails, the motor controller will report the fault level information according to the motor safety status, and the vehicle controller will limit the speed or stop the vehicle according to the fault level. When the front drive system or the rear drive system fails, the vehicle controller will reduce the speed or stop the vehicle according to the fault level of the electric drive, and the drive system that has not failed cannot fully exert its driving capacity. Summary of the invention

[0004] Embodiments of the present invention provide a vehicle drive control method, device, system, storage medium and vehicle, aiming to address the problems existing in the above special circumstances.

[0005] In order to solve the above-mentioned technical problems, the present invention is achieved as follows:

[0006] In a first aspect, an embodiment of the present invention provides a vehicle driving control method, the method comprising:

[0007] When fault information of the electric drive system is detected, determining a fault level of the electric drive system corresponding to the fault information according to safety status information of the electric drive system, fault manifestation information and post-processing execution actions;

[0008] When the disengagement control system fault information is detected, the disengagement system fault level corresponding to the fault information is determined according to the current gear position of the disengagement controller;

[0009] According to the disconnection system fault level and the electric drive system fault level, corresponding fault handling actions are performed.

[0010] Optionally, determining the electric drive system fault level corresponding to the fault information according to the safety status information, fault manifestation information and post-processing execution action of the electric drive system includes:

[0011] When the safety state of the electric drive system is that only an active short circuit state can be executed, the fault manifestation is that the electric drive system loses power, and the post-processing execution action is that the high voltage needs to be disconnected, the fault level of the electric drive system is determined to be the fifth fault level;

[0012] When the safety state of the electric drive system is that it can only execute the active short-circuit state, the fault manifestation is the power loss of the electric drive system, and the post-processing execution action is to reduce the motor speed to zero within a preset time, the fault level of the electric drive system is determined to be the fourth fault level;

[0013] When the safety state of the electric drive system is an active short-circuit state or a free-running state, the fault is manifested as power loss of the electric drive system. The post-processing execution action is to reduce the motor speed to a preset speed within a preset time, and determine that the fault level of the electric drive system is the third fault level.

[0014] When the safety state of the electric drive system is an active short circuit state, an active short circuit state or a free running state, the fault manifestation is that the electric drive system is in standby state, and the post-processing execution action is that the motor speed needs to be reduced to a preset speed within a preset time, and the fault level of the electric drive system is determined to be the second fault level;

[0015] When the safety state of the electric drive system does not affect the driving safety state, the fault level of the electric drive system is determined to be the first fault level.

[0016] Optionally, determining a disengagement system fault level corresponding to the fault information according to obtaining a current gear position of the disengagement controller includes:

[0017] When the current gear position of the disengagement controller is at a semi-engaged position or the position is unknown, it is determined that the current disengagement system fault level is the fourth fault level;

[0018] When the current gear position of the disengagement controller is at the disengagement position, determining that the current disengagement system fault level is the third fault level;

[0019] When the current gear position of the disengagement controller is at the engagement position, determining that the current disengagement system fault level is the second fault level;

[0020] When the fault information of the disconnecting controller does not affect the driving safety state, the current disconnecting system fault level is determined to be the first fault level.

[0021] Optionally, determining a disengagement system fault level corresponding to the fault information according to obtaining a current gear position of the disengagement controller includes:

[0022] When the current gear position of the disengagement controller is at a semi-engaged position or the position is unknown, it is determined that the current disengagement system fault level is the fourth fault level;

[0023] When the current gear position of the disengagement controller is at the disengagement position, determining that the current disengagement system fault level is the third fault level;

[0024] When the current gear position of the disengagement controller is at the engagement position, determining that the current disengagement system fault level is the second fault level;

[0025] When the fault information of the disconnecting controller does not affect the driving safety state, the current disconnecting system fault level is determined to be the first fault level.

[0026] Optionally, when the disconnection system fault level is the fourth fault level, a fault code is reported and the vehicle is stopped within a specified time;

[0027] When the disconnection system fault level is the third fault level, the fault code is reported and the system enters the safe state for disconnection;

[0028] When the disconnection system fault level is the second fault level, the fault code is reported and the system enters the safe state combination;

[0029] When the disconnection system fault level is the first fault level, no processing or alarm is performed.

[0030] Optionally, performing corresponding fault handling actions according to the disconnection system fault level and the electric drive system fault level includes:

[0031] When the disconnection control system fault level is the first fault level and the electric drive system fault level is the first fault level, execute the no-fault no-processing action, alarm action or power reduction operation action;

[0032] When the disconnection system fault level is the first fault level and the electric drive system fault level is the second fault level, the action of disconnecting the faulty drive system operation is executed;

[0033] When the disconnection system fault level is the first fault level and the electric drive system fault level is the third fault level, the action of disconnecting the faulty drive system operation is executed;

[0034] When the disconnection system fault level is the first fault level and the electric drive system fault level is the fourth fault level, the action of disconnecting the faulty drive system operation is performed;

[0035] When the disconnection system fault level is the first fault level and the electric drive system fault level is the fifth fault level, the action of disconnecting the faulty drive system and disconnecting the high voltage system operation is performed.

[0036] Optionally, when the disconnection system fault level is the second fault level and the electric drive system fault level is the first fault level, an alarm action or a power reduction operation action is performed;

[0037] When the disconnection system fault level is the second fault level and the electric drive system fault level is the second fault level, an action of operating in conjunction with the faulty drive system is performed;

[0038] When the disconnection system fault level is the second fault level and the electric drive system fault level is the third fault level, an action of operating in conjunction with the faulty drive system is performed;

[0039] When the disconnection system fault level is the second fault level and the electric drive system fault level is the fourth fault level, an action of operating in conjunction with the faulty drive system is performed;

[0040] When the disconnection system fault level is the second fault level and the electric drive system fault level is the fifth fault level, the vehicle is stopped and the high-voltage system is disconnected.

[0041] Optionally, when the disconnection system fault level is the third fault level and the electric drive system fault level is the first fault level, an action of disconnecting the faulty drive system operation is performed;

[0042] When the disconnection system fault level is the third fault level and the electric drive system fault level is the second fault level, the action of disconnecting the faulty drive system operation is executed;

[0043] When the disconnection system fault level is the third fault level and the electric drive system fault level is the third fault level, the action of disconnecting the faulty drive system operation is executed;

[0044] When the disconnection system fault level is the third fault level and the electric drive system fault level is the fourth fault level, the action of disconnecting the faulty drive system operation is executed;

[0045] When the disconnection system fault level is the third fault level and the electric drive system fault level is the fifth fault level, the action of disconnecting the faulty drive system and disconnecting the high-voltage system operation is performed.

[0046] Optionally, when the disconnection system fault level is the fourth fault level and the electric drive system fault level is the first fault level, a parking action is performed.

[0047] When the disconnection system fault level is the fourth fault level and the electric drive system fault level is the second fault level, the parking action is performed.

[0048] When the disconnection system fault level is the fourth fault level and the electric drive system fault level is the third fault level, the parking action is performed.

[0049] When the disconnection system fault level is the fourth fault level and the electric drive system fault level is the fourth fault level, the parking action is performed.

[0050] When the disconnection system fault level is the fourth fault level and the electric drive system fault level is the fifth fault level, the parking action is performed and the high-voltage system is disconnected.

[0051] In a second aspect, an embodiment of the present invention provides a vehicle driving control device, the device comprising:

[0052] A first determination module is used to, after detecting the fault information of the electric drive system, determine the fault level of the electric drive system corresponding to the fault information according to the fault level classification relationship of the electric drive system as the first fault level;

[0053] A second determination module is used to determine, after detecting the disengagement system fault information, the fault level corresponding to the fault information according to the current gear position of the disengagement controller, as the second fault level;

[0054] The execution module is used to execute corresponding fault processing actions according to the disconnection system fault level and the electric drive system fault level.

[0055] A third aspect of an embodiment of the present invention provides a vehicle driving control system, the system comprising:

[0056] A drive motor system, wherein the motor drive system is used to detect fault information of the electric drive system and determine the fault level corresponding to the fault information according to the fault level classification relationship of the electric drive system;

[0057] A disengagement control system, the disengagement control system is used to detect the disengagement controller fault information, and determine the fault level corresponding to the fault information according to the current gear position of the disengagement controller;

[0058] The vehicle control system is used to perform corresponding fault handling actions based on a mapping matrix according to the fault level of the drive motor system and the fault level of the disconnection control system.

[0059] A fourth aspect of an embodiment of the present invention provides a readable storage medium, wherein the storage medium stores a vehicle drive control program, and the vehicle drive control program is executed by a processor to implement the steps of the vehicle drive control method provided in the first aspect of the embodiment of the present invention.

[0060] A fifth aspect of an embodiment of the present invention provides a vehicle, comprising the vehicle drive control system provided in the third aspect of an embodiment of the present invention.

[0061] Compared with the prior art, the vehicle driving method of the present invention has the following advantages:

[0062] In the present invention, after the fault information of the electric drive system is detected, the fault level of the electric drive system corresponding to the fault information is determined according to the safety status information and fault manifestation information of the electric drive system. After the fault information of the disengagement controller is detected, the fault level of the disengagement system corresponding to the fault information is determined according to the current gear position of the disengagement controller. According to the disengagement system fault level and the electric drive system fault level, the corresponding fault handling action is performed. When any system or rear drive system fails, the faulty drive system can be disengaged according to the fault information judgment result, and the driving capacity of the non-faulty drive system can be fully utilized, and the driving speed is not reduced, and the vehicle can be driven normally, thereby improving the driving performance of the whole vehicle of the four-wheel drive system vehicle, and thus improving the driving experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0064] Figure 1 is a flow chart of steps of a vehicle driving control method in an embodiment of the present invention;

[0065] Figure 2 is a schematic diagram of a vehicle drive control system in an embodiment of the present invention;

[0066] Figure 3 is a schematic diagram of a vehicle driving control device in an embodiment of the present invention;

[0067] Reference numerals: 301 is a first determination module, 302 is a second determination module, and 303 is an execution module. DETAILED DESCRIPTION

[0068] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0069] In the related art, when the front drive system or rear drive system fails, the motor controller will report the fault level information according to the motor safety status, and the vehicle controller will limit the speed or stop the vehicle according to the fault level. When the front drive system or rear drive system fails, the vehicle controller will reduce the speed or stop the vehicle according to the fault level of the electric drive, and the drive system that has not failed cannot fully exert its driving capacity.

[0070] In order to overcome the above problems, the present application proposes a vehicle drive control method, which aims to determine the electric drive system fault level corresponding to the fault information according to the safety status information and fault manifestation information of the electric drive system after the fault information of the electric drive system is detected, and when the fault information of the disengagement controller is detected, the disengagement system fault level corresponding to the fault information is determined according to the current gear position of the disengagement controller, and the corresponding fault handling action is performed according to the disengagement system fault level and the electric drive system fault level. When any front drive system or rear drive system fails, the faulty drive system can be disengaged according to the fault information judgment result, and the driving capacity of the non-faulty drive system can be fully utilized, and the driving speed is not reduced, and the vehicle can be driven normally, thereby improving the driving performance of the whole vehicle of the four-wheel drive system vehicle, and thus improving the driving experience.

[0071] The embodiment of the present invention provides a vehicle driving control method, see Figure 1 , Figure 1 A flow chart of a vehicle driving control method according to an embodiment of the present application is shown, and the method comprises the following steps:

[0072] Step S101: when fault information of the electric drive system is detected, the fault level of the electric drive system corresponding to the fault information is determined according to the safety status information, fault manifestation information and post-processing execution action of the electric drive system.

[0073] In this embodiment, during the driving and operation of the vehicle, the electric drive system may malfunction, and the electric drive system includes a front-wheel drive system and a rear-wheel drive system, and the front-wheel drive system and the rear-wheel drive system respectively include corresponding motors, motor controllers MCU and transmission mechanisms. When the components have electrical faults or mechanical faults, the corresponding fault information will be fed back to the electric drive system. The electric drive system will judge the fault level of the electrical fault or mechanical fault occurring in the system at this time based on the performance of the fault information, the safety status information of the electric drive system, the post-processing actions to be performed, and the preset fault level classification relationship.

[0074] In an optional implementation, according to the safety status information and fault manifestation information of the electric drive system, the method for determining the fault level of the electric drive system corresponding to the fault information may include:

[0075] When the safety state of the electric drive system is that it can only execute the active short-circuit state, the fault manifestation is the loss of power of the electric drive system, and the post-processing execution action is to disconnect the high voltage, the fault level of the electric drive system is determined to be the fifth fault level.

[0076]

[0077]

[0078] Table 1: Correspondence table of fault levels of electric drive system

[0079] In this embodiment, as shown in the electric drive system fault level correspondence table in Table 1, when the fault level is 6, the safety state of the electric drive system is that it can only execute the active short circuit state ASC (active short circuit), and the safety state refers to the functional safety state of the driving process. When the safety state is that it can only execute the active short circuit state, and the corresponding fault manifestation is the loss of power of the electric drive system, the post-processing action that needs to be executed is the action of disconnecting the high voltage and actively discharging. At this time, it belongs to the situation where the risk of the electric drive system fault level is relatively high, and the fault level of the electric drive system is determined to be the fifth fault level. When the safety state of the electric drive system is that it can only execute the active short circuit state, the fault manifestation is the loss of power of the electric drive system, and the post-processing execution action is that the motor speed needs to be reduced to zero within a preset time, the fault level of the electric drive system is determined to be the fourth fault level.

[0080] In this embodiment, as shown in Table 1, when the fault level is 5, when the safety state of the electric drive system is that only the active short circuit state can be executed, the corresponding fault is that the electric drive system loses power, and the post-processing action to be executed is that the vehicle reduces the motor speed to 0 within a specified time. At this time, the electric drive system fault level risk impact is general, and the electric drive system fault level is determined to be the fourth fault level.

[0081] When the safety state of the electric drive system is an active short-circuit state or a free-running state, the fault is manifested as power loss of the electric drive system. The post-processing execution action is to reduce the motor speed to a preset speed within a preset time, and determine that the fault level of the electric drive system is the third fault level.

[0082] In this embodiment, as shown in Table 1, when the fault level is 4, when the safety state of the electric drive system is to execute the active short circuit state or the free running state FW (free wheeling), the corresponding fault is the loss of power of the electric drive system, and the post-processing action to be executed is to reduce the motor speed to the specified speed or allow the vehicle to be dragged below the preset speed within the specified time. At this time, the electric drive system fault level risk impact is general, and the electric drive system fault level is determined to be the third fault level.

[0083] When the safety state of the electric drive system is an active short circuit state, an active short circuit state or a free running state, the fault is manifested as the electric drive system in standby state, and the post-processing execution action is to reduce the motor speed to a preset speed within a preset time, and determine the fault level of the electric drive system to be the second fault level. In this embodiment, as shown in the electric drive system fault level correspondence table in Table 1, when the fault level is 3, when the safety state of the electric drive system is to execute an active short circuit state or a free running state FW (free wheeling), when the corresponding fault is manifested as the electric drive system in standby state, the post-processing action to be executed is to reduce the motor speed to or allow the vehicle to be dragged below the speed S within a specified time. At this time, it belongs to the situation where the risk of the fault level of the electric drive system is generally affected, and the fault level of the electric drive system is determined to be a medium-risk fault level.

[0084] When the safety state of the electric drive system does not affect the driving safety state, the fault level of the electric drive system is determined to be a low-risk fault level.

[0085] In this embodiment, as shown in the electric drive system fault level correspondence table in Table 1, when the fault level is 0-2, that is, the fault information at this time does not affect the driving safety state, such as the vehicle body temperature is too high, etc., or no fault information is generated, the corresponding alarm or power reduction operation is performed. At this time, it belongs to the situation where the electric drive system fault level risk is low, and the electric drive system fault level is determined to be a low-risk fault level.

[0086] Step S102: when the disengagement system fault information is detected, the disengagement system fault level corresponding to the fault information is determined based on the current gear position of the disengagement controller.

[0087] In this embodiment, the disengagement controller ACU includes two gears, namely, the engagement gear and the disengagement gear. Since the disengagement structure itself is a mechanical structure, the probability of its failure is low. When the disengagement system detects a failure of the disengagement controller ACU, the current gear position of the disengagement controller is obtained, that is, the disengagement system fault level corresponding to the fault information is determined based on the current gear position information of the disengagement controller.

[0088] In an optional implementation, according to obtaining the current gear position of the disengagement controller, the method for determining the disengagement system fault level corresponding to the fault information may include:

[0089]

[0090] Table 2: Disconnection system fault level correspondence table

[0091] When the current gear position of the disengagement controller is at a semi-engaged position or the position is unknown, it is determined that the current disengagement system fault level is a fourth fault level disengagement system fault level.

[0092] In this embodiment, as shown in the disengagement system fault level correspondence table in Table 2, when the fault level is 5, that is, when the disengagement controller fails, if the gear position is in a semi-engaged position or its position is uncertain, since the gear position information cannot be collected, it means that the power transmission is abnormal or uncontrolled, so the driving state is relatively dangerous at this time. At this time, it belongs to the situation with a higher risk of disengagement system fault level, and the current disengagement system fault level is determined to be the fourth fault level disengagement system fault level.

[0093] When the disconnection system fault level is the fourth fault level, a fault code is reported, the drive system cannot work, affecting the driving of the entire vehicle, and the vehicle needs to be stopped within a specified time.

[0094] When the current gear position of the disengagement controller is at the disengagement position, it is determined that the current disengagement system fault level is the third fault level disengagement system fault level.

[0095] In this embodiment, as shown in the disconnection system fault level correspondence table in Table 2, when the fault level is 4, that is, when the disconnection controller fails, if the gear position is in the engaged position or the situation, it means that the power transmission is interrupted at this time. At this time, it belongs to the situation of general risk of disconnection system fault level, and the disconnection system fault level is determined to be the third fault level.

[0096] When the disconnection system fault level is the third fault level, the fault code is reported and the vehicle enters a safe state to disconnect the drive system without affecting the driving of the entire vehicle.

[0097] When the current gear position of the disengagement controller is at the engagement position, the current disengagement system fault level is determined to be the second fault level disengagement system fault level.

[0098] In this embodiment, as shown in the disconnection system fault level correspondence table in Table 2, when the fault level is 3, that is, when the disconnection controller fails, if the gear position is in the engaged position, the power transmission is not interrupted. At this time, it belongs to the situation where the disconnection system fault level risk is general, and the disconnection system fault level is determined to be the second fault level.

[0099] When the disconnection system fault level is the second fault level, the fault code is reported and the vehicle enters a safe state. The drive system can work without affecting the driving of the vehicle.

[0100] When the fault information of the disconnecting controller does not affect the driving safety state, the current disconnecting system fault level is determined as the first fault level disconnecting system fault level.

[0101] In this embodiment, as shown in the disengagement system fault level correspondence table in Table 2, when the fault level is 0-2, that is, the fault of the disengagement controller is a fault that does not affect the driving safety state or no fault occurs, and normal shifting operations can be performed. Therefore, the power transmission is not interrupted. At this time, it belongs to the situation where the risk of the disengagement system fault level is relatively low, and the disengagement system fault level is determined to be a low-risk fault level.

[0102] When the disconnection system fault level is a low-risk fault level, a corresponding drive system control operation is performed, such as no processing or alarm.

[0103] Step S103: executing corresponding fault handling actions according to the disconnection system fault level and the electric drive system fault level.

[0104] In this embodiment, after the vehicle controller VCU receives the feedback of the fault level of the electric drive system and the fault level of the disconnection controller ACU, it determines the corresponding fault processing action according to the fault level of the electric drive system and the matrix mapped by the disconnection system, and executes the corresponding processing action through the corresponding execution component.

[0105] In an optional implementation, when the disconnection control system fault level is the first fault level and the electric drive system fault level is the first fault level, a no-fault no-processing action, an alarm action, or a power-reducing operation action is performed;

[0106] When the disconnection system fault level is the first fault level and the electric drive system fault level is the second fault level, the action of disconnecting the faulty drive system operation is executed;

[0107] When the disconnection system fault level is the first fault level and the electric drive system fault level is the third fault level, the action of disconnecting the faulty drive system operation is executed;

[0108] When the disconnection system fault level is the first fault level and the electric drive system fault level is the fourth fault level, the action of disconnecting the faulty drive system operation is performed;

[0109] When the disconnection system fault level is the first fault level and the electric drive system fault level is the fifth fault level, the action of disconnecting the faulty drive system and disconnecting the high voltage system operation is performed.

[0110]

[0111]

[0112] Table 3: Mapping table of disconnection system fault level and electric drive system fault level

[0113] In this embodiment, as shown in Table 3, the mapping table of the disconnection system fault level and the electric drive system fault level, when the fault level is 0-2, that is, when the disconnection system fault level is the first fault level and the electric drive system fault level is the first fault level, it means that the vehicle is in a low-risk operating state or a fault-free state, and the vehicle performs an alarm operation or a power reduction operation action or does not perform any processing if there is no fault or no hazard; when the disconnection system fault level is 0-2 and the electric drive system fault level is 3, that is, when the disconnection system fault level is the first fault level and the electric drive system fault level is the second fault level, it means that the vehicle is in a medium-risk operating state at this time, and the vehicle performs the operation action of disconnecting the faulty electric drive system, and disconnects the faulty drive system through the disconnection device, that is, the faulty drive system does not affect the operation of the normal drive system, ensuring that the driving capacity of the non-faulty drive system is fully utilized, the driving speed is not reduced, and the vehicle travels normally; when the disconnection system fault level is 0-2, the electric drive system When the fault level is 4, that is, when the disconnection system fault level is the first fault level and the electric drive system fault level is the third fault level, it means that the vehicle is in a medium-risk operating state at this time, and the vehicle executes the operating action of disconnecting the faulty electric drive system, and disconnects the faulty drive system through the disconnecting device, that is, the faulty drive system does not affect the operation of the normal drive system, ensuring that the driving capacity of the non-faulty drive system is fully utilized, without reducing the driving speed, and driving normally. When the disconnection system fault level is 0-2 and the electric drive system fault level is 5, that is, when the disconnection system fault level is the first fault level and the electric drive system fault level is the fourth fault level, it means that the vehicle is in a medium-risk operating state at this time, and the vehicle executes the operating action of disconnecting the faulty electric drive system, and disconnects the faulty drive system through the disconnecting device, that is, the faulty drive system does not affect the operation of the normal drive system, ensuring that the driving capacity of the non-faulty drive system is fully utilized, without reducing the driving speed, and driving normally. When the disconnection system fault level is 0-2 and the electric drive system fault level is 6, that is, when the disconnection system fault level is the first fault level and the electric drive system fault level is the fifth fault level, it means that the vehicle is in a high-risk operating state at this time. The vehicle executes the operating action of disconnecting the faulty electric drive system, disconnects the faulty drive system through the disconnection device, and cuts off the power supply system of the high-voltage part of the vehicle, and the vehicle can be towed without speed limit.

[0114] In an optional implementation, when the disconnection system fault level is the second fault level and the electric drive system fault level is the first fault level, an alarm action or a power reduction operation action is performed;

[0115] When the disconnection system fault level is the second fault level and the electric drive system fault level is the second fault level, an action of operating in conjunction with the faulty drive system is performed;

[0116] When the disconnection system fault level is the second fault level and the electric drive system fault level is the third fault level, an action of operating in conjunction with the faulty drive system is performed;

[0117] When the disconnection system fault level is the second fault level and the electric drive system fault level is the fourth fault level, an action of operating in conjunction with the faulty drive system is performed;

[0118] When the disconnection system fault level is the second fault level and the electric drive system fault level is the fifth fault level, the vehicle is stopped and the high-voltage system is disconnected.

[0119] In this embodiment, as shown in Table 3, the disconnection system fault level and the electric drive system fault level mapping table, when the disconnection system fault level is 3 and the electric drive system fault level is 0-2, that is, when the disconnection system fault level is the second fault level and the electric drive system fault level is the first fault level, it means that the vehicle is in a medium-risk operation state, and the vehicle performs an alarm operation or a power reduction operation action;

[0120] When the disconnection system fault level is 3 and the electric drive system fault level is 3, when the disconnection system fault level is the second fault level and the electric drive system fault level is the second fault level, it means that the vehicle is in a high-risk operation state at this time, and the vehicle performs an operation combined with the faulty drive system;

[0121] When the disconnection system fault level is 3 and the electric drive system fault level is 4, when the disconnection system fault level is the second fault level and the electric drive system fault level is the third fault level, it means that the vehicle is in a high-risk operation state at this time, and the vehicle performs an operation combined with the faulty drive system;

[0122] When the disconnection system fault level is 3 and the electric drive system fault level is 5, when the disconnection system fault level is the second fault level and the electric drive system fault level is the fourth fault level, it means that the vehicle is in a high-risk operation state at this time, and the vehicle performs an operation combined with the faulty drive system;

[0123] When the disconnection system fault level is 3 and the electric drive system fault level is 6, when the disconnection system fault level is the second fault level and the electric drive system fault level is the fifth fault level, it means that the vehicle is in a high-risk operating state, the vehicle performs a parking action, and disconnects the power supply system of the high-voltage part.

[0124] In an optional implementation, when the disconnection system fault level is the third fault level and the electric drive system fault level is the first fault level, an action of disconnecting the faulty drive system operation is performed;

[0125] When the disconnection system fault level is the third fault level and the electric drive system fault level is the second fault level, the action of disconnecting the faulty drive system operation is executed;

[0126] When the disconnection system fault level is the third fault level and the electric drive system fault level is the third fault level, the action of disconnecting the faulty drive system operation is executed;

[0127] When the disconnection system fault level is the third fault level and the electric drive system fault level is the fourth fault level, the action of disconnecting the faulty drive system operation is executed;

[0128] When the disconnection system fault level is the third fault level and the electric drive system fault level is the fifth fault level, the action of disconnecting the faulty drive system and disconnecting the high-voltage system operation is performed.

[0129] In this embodiment, as shown in Table 3, the mapping table of the disconnection system fault level and the electric drive system fault level, when the disconnection system fault level is 4 and the electric drive system fault level is 0-2, that is, when the disconnection system fault level is the second fault level and the electric drive system fault level is the first fault level, it means that the vehicle is in a medium-risk operation state, and the vehicle performs an alarm operation or a power reduction operation. When the disconnection system fault level is 4 and the electric drive system fault level is 3, when the disconnection system fault level is the third fault level and the electric drive system fault level is the second fault level, it means that the vehicle is in a high-risk operation state, and the vehicle performs the operation of disconnecting the faulty drive system and allowing it to be towed at a limited speed;

[0130] When the disconnection system fault level is 4 and the electric drive system fault level is 4, when the disconnection system fault level is the third fault level and the electric drive system fault level is the third fault level, it means that the vehicle is in a high-risk operation state at this time, and the vehicle executes the operation of disconnecting the faulty drive system and allowing it to be towed at a limited speed;

[0131] When the disconnection system fault level is 4 and the electric drive system fault level is 5, when the disconnection system fault level is the third fault level and the electric drive system fault level is the fourth fault level, it means that the vehicle is in a high-risk operation state at this time, and the vehicle performs the operation of disconnecting the faulty drive system and allows the operation of being towed at a limited speed;

[0132] When the disconnection system fault level is 4 and the electric drive system fault level is 6, when the disconnection system fault level is the third fault level and the electric drive system fault level is the fifth fault level, it means that the vehicle is in a high-risk operating state at this time, and the vehicle executes the action of disconnecting the faulty drive system and disconnecting the high-voltage system operation.

[0133] In an optional implementation, when the disconnection system fault level is the fourth fault level and the electric drive system fault level is the first fault level, a parking action is performed.

[0134] When the disconnection system fault level is the fourth fault level and the electric drive system fault level is the second fault level, the parking action is performed.

[0135] When the disconnection system fault level is the fourth fault level and the electric drive system fault level is the third fault level, the parking action is performed.

[0136] When the disconnection system fault level is the fourth fault level and the electric drive system fault level is the fourth fault level, the parking action is performed.

[0137] When the disconnection system fault level is the fourth fault level and the electric drive system fault level is the fifth fault level, the parking action is performed and the high-voltage system is disconnected.

[0138] In this embodiment, as shown in Table 3, the mapping table of the disconnection system fault level and the electric drive system fault level, when the disconnection system fault level is 5 and the electric drive system fault level is 0-2, when the disconnection system fault level is the fourth fault level and the electric drive system fault level is the first fault level, it means that the vehicle is in a high-risk operating state and the vehicle immediately performs a parking action; when the disconnection system fault level is 5 and the electric drive system fault level is 3-5, when the disconnection system fault level is the fourth fault level and the electric drive system fault level is the second fault level to the fourth fault level, it means that the vehicle is in a high-risk operating state at this time, and the vehicle executes, and the vehicle immediately executes a parking action; when the disconnection system fault level is 5 and the electric drive system fault level is 6, when the disconnection system fault level is the fourth fault level and the electric drive system fault level is the fifth fault level, it means that the vehicle is in a high-risk operating state at this time, the vehicle executes a parking action, and disconnects the power supply system of the high voltage part.

[0139] Based on the same inventive concept, the present application embodiment provides a vehicle driving control system. Figure 2 , shows a schematic diagram of a vehicle drive control system. Figure 2 As shown, the system includes:

[0140] An electric drive system is used to detect electric drive system fault information and determine the fault level corresponding to the fault information according to the fault level classification relationship of the electric drive system.

[0141] In this embodiment, the electric drive system includes a drive system and a rear drive system, and the drive system and the rear drive system respectively include corresponding motors, motor controllers MCU and transmission mechanisms. When the components have electrical faults or mechanical faults, the corresponding fault information will be fed back to the electric drive system EDS, and the electric drive system EDS will determine the fault level of the electrical fault or mechanical fault occurring in the system at this time based on the fault information and the preset fault level classification relationship, and feed back the determined fault level of the electric drive system to the vehicle controller VCU.

[0142] A disengagement control system is used to detect disengagement controller fault information and determine the fault level corresponding to the fault information based on the current gear position of the disengagement controller.

[0143] In this embodiment, the disengagement control system includes a disengagement controller ACU and a disengagement structure. The disengagement structure can be set in the front drive system or the rear drive system, and is used to disengage the faulty drive system from the entire drive system. The disengagement controller ACU includes two gears, namely, a combined gear and a disengaged gear. Since the disengagement structure itself is a mechanical structure, the probability of its failure is low. When the disengagement system detects a fault in the disengagement controller ACU, it will obtain the current gear position of the disengagement controller, that is, determine the disengagement system fault level corresponding to the fault information based on the current gear position information of the disengagement controller. And the determined disengagement system fault level is fed back to the vehicle controller.

[0144] The vehicle control system is used to perform corresponding fault handling actions according to the fault level of the drive motor system and the fault level of the disconnection control system.

[0145] In this embodiment, the vehicle control system is composed of a vehicle controller VCU and corresponding vehicle control execution components. When the vehicle controller VCU receives the feedback of the fault level of the electric drive system and the fault level of the disconnection controller ACU, the corresponding fault handling action is determined according to the matrix mapped by the fault level of the electric drive system and the fault level of the disconnection controller ACU, and the corresponding fault handling action is executed by the corresponding execution component.

[0146] Based on the same inventive concept, the present application proposes a vehicle driving control device, referring to Figure 3 , Figure 3 is a schematic diagram of a vehicle driving control device in an embodiment of the present invention. Figure 3 As shown, the device comprises:

[0147] A first determination module 301 is used to determine, after detecting electric drive system fault information, a fault level corresponding to the fault information according to the fault level classification relationship of the electric drive system as a first fault level;

[0148] The second determination module 302 is used to determine the fault level corresponding to the fault information as the second fault level according to the current gear position of the disengagement controller after the disengagement controller fault information is detected;

[0149] The execution module 303 is used to execute the fault processing action corresponding to the first fault level and the second fault level according to the mapping matrix determined by the fault level of the electric drive system and the fault level of the disengagement mechanism.

[0150] Based on the same inventive concept, an embodiment of the present application provides a vehicle, including a vehicle drive control device system as proposed in the third aspect of the embodiment of the present invention.

[0151] In this embodiment, after the fault information of the electric drive system is detected, the fault level of the electric drive system corresponding to the fault information is determined according to the safety status information and fault manifestation information of the electric drive system. After the fault information of the disengagement controller is detected, the fault level of the disengagement system corresponding to the fault information is determined according to the current gear position of the disengagement controller. According to the disengagement system fault level and the electric drive system fault level, the corresponding fault handling action is performed. When any front drive system or rear drive system fails, the faulty drive system can be disengaged according to the result of the fault information judgment, and the driving capacity of the non-faulty drive system can be fully utilized, and the driving speed is not reduced, and the vehicle can be driven normally, thereby improving the driving performance of the whole vehicle of the four-wheel drive system vehicle, and thus improving the driving experience.

[0152] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0153] It will be appreciated by those skilled in the art that the embodiments of the present invention may be provided as methods, devices, or computer program products. Therefore, the embodiments of the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the embodiments of the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0154] The embodiments of the present invention are described with reference to the flowcharts and / or block diagrams of the methods, terminal devices (systems), and computer program products according to the embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of the processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing terminal device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing terminal device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0155] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing terminal device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0156] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal device so that a series of operating steps are executed on the computer or other programmable terminal device to produce a computer-implemented process, thereby providing instructions for executing on the computer or other programmable terminal device to implement the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0157] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present invention.

[0158] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements.

[0159] The vehicle drive control method, device, system, storage medium and vehicle provided by the present invention are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A vehicle driving control method, characterized in that: The method comprises: When fault information of the electric drive system is detected, determining a fault level of the electric drive system corresponding to the fault information according to safety status information of the electric drive system, fault manifestation information and post-processing execution actions; When the disconnection system fault information is detected, the disconnection system fault level corresponding to the fault information is determined according to the current gear position of the disconnection controller; Executing corresponding fault handling actions according to the disconnection system fault level and the electric drive system fault level; Determining the electric drive system fault level corresponding to the fault information according to the safety status information, fault manifestation information and post-processing execution action of the electric drive system includes: When the safety state of the electric drive system is that only an active short circuit state can be executed, the fault manifestation is that the electric drive system loses power, and the post-processing execution action is that the high voltage needs to be disconnected, the fault level of the electric drive system is determined to be the fifth fault level; When the safety state of the electric drive system is that it can only execute the active short-circuit state, the fault manifestation is the power loss of the electric drive system, and the post-processing execution action is to reduce the motor speed to zero within a preset time, the fault level of the electric drive system is determined to be the fourth fault level; When the safety state of the electric drive system is an active short-circuit state or a free-running state, the fault is manifested as a power loss of the electric drive system, and the post-processing execution action is to reduce the motor speed to a preset speed within a preset time, and determine that the fault level of the electric drive system is the third fault level; When the safety state of the electric drive system is an active short circuit state, an active short circuit state or a free running state, the fault manifestation is that the electric drive system is in standby state, and the post-processing execution action is that the motor speed needs to be reduced to a preset speed within a preset time, and the fault level of the electric drive system is determined to be the second fault level; When the safety state of the electric drive system does not affect the driving safety state, determining that the fault level of the electric drive system is the first fault level; Determining the disengagement system fault level corresponding to the fault information according to the current gear position of the disengagement controller includes: When the current gear position of the disengagement controller is at a semi-engaged position or the position is unknown, it is determined that the current disengagement system fault level is the fourth fault level; When the current gear position of the disengagement controller is at the disengagement position, determining that the current disengagement system fault level is the third fault level; When the current gear position of the disengagement controller is at the engagement position, determining that the current disengagement system fault level is the second fault level; When the fault information of the disconnecting controller does not affect the driving safety state, the current disconnecting system fault level is determined to be the first fault level; According to the disconnection system fault level and the electric drive system fault level, corresponding fault handling actions are performed, including: In the case where the fault level of the electric drive system is the second fault level, the third fault level, or the fourth fault level, when the disconnection system fault level is the first fault level, or the third fault level, an action of disconnecting the faulty drive system is performed, and when the disconnection system fault level is the second fault level, an action of combining the faulty drive system is performed, and when the disconnection system fault level is the fourth fault level, a parking action is performed; In the case where the fault level of the electric drive system is the first fault level, when the fault level of the disconnecting control system is the first fault level, a no-fault no-processing action, an alarm action, or a power-reducing operation action is performed, and when the fault level of the disconnecting system is the second fault level, an alarm action or a power-reducing operation action is performed, and when the fault level of the disconnecting system is the third fault level, an action of disconnecting the fault drive system operation is performed, and when the fault level of the disconnecting system is the fourth fault level, a parking action is performed; When the electric drive system fault level is the fifth fault level, when the disconnection system fault level is the first fault level, or the third fault level, the action of disconnecting the faulty drive system and disconnecting the high-voltage system operation is performed, and when the disconnection system fault level is the second fault level, or the fourth fault level, the action of stopping and disconnecting the high-voltage system is performed.

2. The vehicle driving control method according to claim 1, characterized in that: When the disconnection system fault level is the fourth fault level, the fault code is reported and the vehicle is stopped within the specified time; When the disconnection system fault level is the third fault level, the fault code is reported and the system enters the safe state for disconnection; When the disconnection system fault level is the second fault level, the fault code is reported and the system enters the safe state combination; When the disconnection system fault level is the first fault level, no processing or alarm is performed.

3. A vehicle driving control device, characterized in that: The device comprises: The first determination module is used to determine, after detecting the fault information of the electric drive system, the fault level of the electric drive system corresponding to the fault information according to the fault level classification relationship of the electric drive system as the first fault level; it is also used to determine that the fault level of the electric drive system is the fifth fault level when the safety state of the electric drive system is that only the active short-circuit state can be executed, the fault is manifested as the power loss of the electric drive system, and the post-processing execution action is that the high voltage needs to be disconnected; it is also used to determine that the fault level of the electric drive system is the fourth fault level when the safety state of the electric drive system is that only the active short-circuit state can be executed, the fault is manifested as the power loss of the electric drive system, and the post-processing execution action is that the motor speed needs to be reduced to zero within a preset time .... When the safety state of the electric drive system is an active short-circuit state or a free-running state, the fault is manifested as a loss of power in the electric drive system, and the post-processing execution action is that the motor speed needs to be reduced to a preset speed within a preset time, and the electric drive system fault level is determined to be a third fault level; it is also used when the safety state of the electric drive system is an active short-circuit state, an active short-circuit state or a free-running state, and the fault is manifested as the electric drive system being in standby state, and the post-processing execution action is that the motor speed needs to be reduced to a preset speed within a preset time, and the electric drive system fault level is determined to be a second fault level; it is also used when the safety state of the electric drive system does not affect the driving safety state, and the electric drive system fault level is determined to be a first fault level; A second determination module is used to determine, after detecting the disengagement system fault information, the fault level corresponding to the fault information according to the current gear position of the disengagement controller, as the second fault level; it is also used to determine that the current disengagement system fault level is the fourth fault level when the current gear position of the disengagement controller is in the semi-engaged position or the position is unknown; it is also used to determine that the current disengagement system fault level is the third fault level when the current gear position of the disengagement controller is in the disengaged position; it is also used to determine that the current disengagement system fault level is the second fault level when the current gear position of the disengagement controller is in the engaged position; it is also used to determine that the current disengagement system fault level is the first fault level when the fault information of the disengagement controller does not affect the driving safety state; The execution module is used to execute the corresponding fault handling action according to the disconnection system fault level and the electric drive system fault level; it is also used to execute the action of disconnecting the fault drive system when the electric drive system fault level is the second fault level, the third fault level, or the fourth fault level, and the disconnection system fault level is the first fault level, or the third fault level, and when the disconnection system fault level is the second fault level, execute the action of combining the fault drive system operation, and when the disconnection system fault level is the fourth fault level, execute the parking action; it is also used to execute the action of disconnecting the fault control system when the electric drive system fault level is the first fault level and the disconnection control system fault level is the first fault level. The invention also provides an operation mode for disengaging the fault drive system and disconnecting the high-voltage system when the fault level of the electric drive system is the first fault level or the third fault level, and an operation mode for disengaging the fault drive system and disconnecting the high-voltage system when the fault level of the electric drive system is the second fault level, and an operation mode for disengaging the fault drive system and disconnecting the high-voltage system when the fault level of the electric drive system is the second fault level or the fourth fault level.

4. A vehicle driving control system, characterized in that: The system is applied to a vehicle with a steer-by-wire system, and the system comprises: A drive motor system, wherein the drive motor system is used to detect fault information of the electric drive system, and determine the fault level corresponding to the fault information according to the fault level classification relationship of the electric drive system; it is also used when the safety state of the electric drive system is that only an active short-circuit state can be executed, the fault is manifested as a power loss of the electric drive system, and the post-processing execution action is to disconnect the high voltage, and determine that the fault level of the electric drive system is the fifth fault level; it is also used when the safety state of the electric drive system is that only an active short-circuit state can be executed, the fault is manifested as a power loss of the electric drive system, and the post-processing execution action is to reduce the motor speed to zero within a preset time, and determine that the fault level of the electric drive system is the fourth .... The safety state of the electric drive system is an active short-circuit state or a free-running state, the fault is manifested as a loss of power in the electric drive system, and the post-processing execution action is to reduce the motor speed to a preset speed within a preset time, and determine that the fault level of the electric drive system is the third fault level; it is also used when the safety state of the electric drive system is an active short-circuit state, an active short-circuit state or a free-running state, the fault is manifested as the electric drive system standby, and the post-processing execution action is to reduce the motor speed to a preset speed within a preset time, and determine that the fault level of the electric drive system is the second fault level; it is also used when the safety state of the electric drive system does not affect the driving safety state, determine that the fault level of the electric drive system is the first fault level; A disengagement control system, the disengagement control system is used to detect disengagement controller fault information, and determine the fault level corresponding to the fault information according to the current gear position of the disengagement controller; it is also used to determine that the current disengagement system fault level is a fourth fault level when the current gear position of the disengagement controller is in a semi-engaged position or an unknown position; it is also used to determine that the current disengagement system fault level is a third fault level when the current gear position of the disengagement controller is in a disengaged position; it is also used to determine that the current disengagement system fault level is a second fault level when the current gear position of the disengagement controller is in an engaged position; it is also used to determine that the current disengagement system fault level is a first fault level when the fault information of the disengagement controller does not affect the driving safety state; A vehicle control system, the vehicle control system is used to perform corresponding fault handling actions based on a mapping matrix according to the fault level of the drive motor system and the fault level of the disconnected control system; it is also used to, when the fault level of the electric drive system is the second fault level, the third fault level, or the fourth fault level, and the disconnected system fault level is the first fault level, or the third fault level, perform an action of disconnecting the faulty drive system operation, and, when the disconnected system fault level is the second fault level, perform an action of combining the operation of the faulty drive system, and, when the disconnected system fault level is the fourth fault level, perform a parking action; it is also used to, when the fault level of the electric drive system is the first fault level, and the disconnected control system fault level is the first fault level. When the fault level of the disconnecting system is the first fault level, the no-fault-no-processing action, the alarm action or the power-reducing operation action is executed, and when the fault level of the disconnecting system is the second fault level, the alarm action or the power-reducing operation action is executed, and when the fault level of the disconnecting system is the third fault level, the action of disconnecting the faulty drive system operation is executed, and when the fault level of the disconnecting system is the fourth fault level, the parking action is executed; it is also used for when the fault level of the electric drive system is the fifth fault level, when the fault level of the disconnecting system is the first fault level, or the third fault level, the action of disconnecting the faulty drive system and disconnecting the high-voltage system operation is executed, and when the fault level of the disconnecting system is the second fault level, or the fourth fault level, the action of stopping the vehicle and disconnecting the high-voltage system is executed.

5. A readable storage medium, characterized in that: The storage medium stores a vehicle driving control program, and the vehicle driving control program is executed by a processor to implement the steps of the vehicle driving control method according to any one of claims 1-2.

6. A vehicle, characterized in that: Includes the vehicle drive control system as described in claim 4.

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