Abnormal launch start processing method, device, storage medium and electric vehicle

Abstract

The present invention discloses a method, device, storage medium, and electric vehicle for handling abnormal launch start. The method includes the following steps: obtaining vehicle power-on status and vehicle fault status, and entering a default mode when power-on is successful and there are no faults; in the default mode, when the brake pedal is in a non-released state and the accelerator pedal is in a released state, adjusting the default mode to a launch start preparation mode; in the launch start preparation mode, when both the brake pedal and the accelerator pedal are in a non-released state, adjusting the launch start preparation mode to the launch start mode; in the launch start mode, when the brake pedal is in a non-released state, obtaining the real-time vehicle speed, and adjusting the launch start mode to the default mode when the real-time vehicle speed is greater than a first preset value. The present invention can directly exit the launch mode at the early stage of such a situation, i.e., when a certain vehicle speed is determined, thereby preventing energy waste and excessive wear of brake pads and improving driving safety.

Description

Technical Field

[0001] The present invention relates to the field of electric vehicles, and in particular to an abnormal launch start processing method, a device, a storage medium and an electric vehicle. Background Art

[0002] New energy vehicles (NEVs) use unconventional fuels as their power source (or conventional fuels with new onboard power units), integrating advanced technologies in vehicle power control and drive to create vehicles with advanced technical principles, new technologies, and new structures. Electric vehicles, as a type of NEV, are powered by an onboard electrical power source, using an electric motor to drive the wheels, and complying with all road traffic and safety regulations. Because EVs have a lower environmental impact than traditional vehicles, their prospects are widely optimistic.

[0003] Generally speaking, for electric vehicle control, when the accelerator pedal and brake pedal are pressed at the same time during normal driving, the vehicle controller will not output both signals to the vehicle's actuator at the same time, but for safety reasons, will only respond to the brake pedal signal.

[0004] Launch Start, as a quick-start method, allows for rapid acceleration, achieving a quick start and better acceleration performance. Consequently, a growing number of new energy vehicles now feature dedicated launch control strategies. For the driver, Launch Start begins with a stationary vehicle, first pressing the brake pedal deeply to hold it stationary, then pressing the accelerator to generate a certain initial torque on the wheels, and finally quickly releasing the brake pedal to initiate Launch Start.

[0005] Traditional launch control cannot distinguish between intentional and erroneous driver actions, such as pressing the brake pedal first and then the accelerator, or the accelerator first and then the brake pedal. For example, if the driver presses the accelerator to start the vehicle and an emergency or unexpected situation occurs, and the driver, nervous and unable to release the accelerator, presses the brake pedal deeply, the vehicle may mistakenly enter launch control. In this case, the driver's true intention is to stop the vehicle without starting, and there is no control strategy to determine the order of the brake and accelerator pedals. Furthermore, since this process occurs so quickly and the vehicle speed is zero, the vehicle may mistakenly enter launch control.

[0006] Furthermore, even if the driver quickly releases the brake pedal but doesn't fully release it to zero, there's still a small amount of braking force. At this point, the driving force is much greater than the braking force, allowing the car to launch. As the vehicle speed increases, the continued presence of braking force can cause abnormal wear of the brake pads and overheating of the brake discs, endangering driving safety. Summary of the Invention

[0007] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a method, device, storage medium and electric vehicle for processing abnormal launch.

[0008] The object of the present invention is achieved through the following technical solutions:

[0009] A first aspect of the present invention provides a method for handling an abnormal launch, comprising the following steps:

[0010] Obtaining the vehicle power-on status and vehicle fault status, and entering a default mode when power-on is successful and there are no faults; the default mode is: when the brake pedal state and the accelerator pedal state are both in a non-released state, outputting a command to execute only the brake control;

[0011] In the default mode, the brake pedal state and the accelerator pedal state are obtained, and when the brake pedal state is not released and the accelerator pedal state is released, the default state is adjusted to the launch start preparation mode;

[0012] In the launch start preparation mode, obtaining the brake pedal state and the accelerator pedal state, and when the brake pedal state and the accelerator pedal state are both in a non-released state, adjusting the launch start preparation mode to the launch start mode;

[0013] In the launch control mode, the brake pedal state is obtained. When the brake pedal state is not released, the real-time vehicle speed is obtained. When the real-time vehicle speed is greater than a first preset value, the launch control mode is adjusted to the default mode.

[0014] Furthermore, the method further comprises the following steps:

[0015] In the default mode, the brake pedal state and the accelerator pedal state are obtained. When the brake pedal state is released, or both the brake pedal state and the accelerator pedal state are not released, the default state is maintained.

[0016] Furthermore, in the launch start preparation mode, the brake pedal state and the accelerator pedal state are obtained. When the brake pedal state and the accelerator pedal state are both in the non-released state, the launch start preparation mode is adjusted to the launch start mode, and replaced with:

[0017] In the launch start preparation mode, the brake pedal status and the accelerator pedal status are obtained. When the brake pedal status and the accelerator pedal status are both in the non-released state, the braking torque generated by the brake pedal and the driving torque generated by the accelerator pedal are obtained; when the braking torque is greater than the driving torque, the launch start preparation mode is adjusted to the launch start mode; when the braking torque is less than the driving torque, the launch start preparation mode is adjusted to the default mode.

[0018] Furthermore, the method further comprises the following steps:

[0019] In the launch mode, the time during which the brake pedal and the accelerator pedal are both in a non-released state is obtained, and when the time exceeds a second preset value, the launch mode is adjusted to the default mode.

[0020] A second aspect of the present invention provides an abnormal launch control device, comprising:

[0021] Initialization module: used to obtain the power-on status and fault status of the vehicle. When the power-on is successful and there is no fault, it enters the default mode; the default mode is: when the brake pedal state and the accelerator pedal state are both in the non-released state, the output is the instruction to execute only the brake control;

[0022] Launch start preparation judgment module: used to obtain the brake pedal status and accelerator pedal status in the default mode. When the brake pedal status is not released and the accelerator pedal status is released, the default state is adjusted to the launch start preparation mode;

[0023] Launch Start Detection Module: This module is used to obtain the brake pedal status and accelerator pedal status in the launch start preparation mode. When both the brake pedal status and the accelerator pedal status are not released, the launch start preparation mode is adjusted to the launch start mode.

[0024] Abnormal launch start judgment module: used to obtain the brake pedal status in the launch start mode, and when the brake pedal status is not released, obtain the real-time vehicle speed. When the real-time vehicle speed is greater than a first preset value, adjust the launch start mode to the default mode.

[0025] Furthermore, the launch preparation determination module is further configured to:

[0026] In the default mode, the brake pedal state and the accelerator pedal state are obtained. When the brake pedal state is released, or both the brake pedal state and the accelerator pedal state are not released, the default state is maintained.

[0027] Furthermore, the launch start judgment module is replaced by:

[0028] Used to obtain the brake pedal status and accelerator pedal status in the launch start preparation mode. When the brake pedal status and accelerator pedal status are both in the non-released state, obtain the braking torque generated by the brake pedal and the driving torque generated by the accelerator pedal; when the braking torque is greater than the driving torque, adjust the launch start preparation mode to the launch start mode; when the braking torque is less than the driving torque, adjust the launch start preparation mode to the default mode.

[0029] Furthermore, the abnormal launch start judgment module is further configured to:

[0030] In the launch mode, the time during which the brake pedal and the accelerator pedal are both in a non-released state is obtained, and when the time exceeds a second preset value, the launch mode is adjusted to the default mode.

[0031] According to a third aspect of the present invention, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps of the abnormal launch start processing method based on an electric vehicle are executed.

[0032] According to a fourth aspect of the present invention, an electric vehicle is provided, comprising a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and when the processor runs the computer program, the steps of the abnormal launch start processing method based on the electric vehicle are executed.

[0033] The beneficial effects of the present invention are:

[0034] (1) In an exemplary embodiment of the present invention, there is no need to change or adjust the original vehicle control model architecture. Instead, several judgment conditions and control strategies need to be added to the existing launch control module. Specifically, when the launch control is accumulating power, when the driver makes an improper operation or error, when the brake pedal is depressed shallowly and there is torque on the wheel, when the vehicle reaches a certain speed, the vehicle returns to the default mode of only performing the braking operation. In other words, this exemplary embodiment can directly exit the launch control mode at the initial stage of the situation, i.e., when it is determined that a certain vehicle speed (a first preset value) has been reached, thereby preventing energy waste, excessive wear of the brake pads, and overheating of the brake discs, thereby improving driving safety.

[0035] (2) In another exemplary embodiment of the present invention, in conjunction with the steps in the aforementioned exemplary embodiment, the order of pressing the brake pedal and the accelerator pedal is determined, thereby more clearly determining the driver's true intention and preventing or reducing safety hazards caused by incorrect operations.

[0036] (3) In another exemplary embodiment of the present invention, in the launch start preparation mode, when the brake pedal state and the accelerator pedal state are both in the non-released state, the vehicle is in the standard state of preparing to enter the launch start mode. At this time, the braking torque generated by the brake pedal and the driving torque generated by the accelerator pedal are obtained; when the braking torque is greater than the driving torque, the launch start preparation mode is adjusted to the launch start mode; and when the braking torque is less than the driving torque, the launch start preparation mode is adjusted to the default mode to avoid the situation where the braking force applied by the driver is small but there is a braking signal. If the driving force is greater than the braking force, the vehicle overcomes the braking force to move forward, which will cause energy waste and abnormal wear of the brake pads. When the launch start preparation mode is adjusted to the default mode, since the brake pedal state is in the non-released state, an instruction to execute only the braking control will be output, and the vehicle will not move forward.

[0037] (4) In another exemplary embodiment of the present invention, when the brake pedal and the accelerator pedal are pressed simultaneously for too long in the launch mode, the launch mode will be exited and the default mode will be entered, and the launch mode will fail, which can prevent overheating caused by the motor maintaining torque output when stationary. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 The present invention provides a flowchart of an abnormal launch control method according to an exemplary embodiment of the present invention. DETAILED DESCRIPTION

[0039] The technical solution of the present invention is described clearly and completely below with reference to the accompanying drawings. It is apparent that the embodiments described are only a portion of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are intended to fall within the scope of protection of the present invention.

[0040] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as "center," "up," "down," "left," "right," "vertical," "horizontal," "inside," and "outside" are based on the directions or positional relationships described in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, terms such as "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention.

[0042] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0043] Launch start, as a method for quickly launching a vehicle, can achieve significant acceleration at the start of a vehicle's launch, enabling a quick start and improved acceleration performance. Consequently, a growing number of new energy vehicles now feature dedicated launch start control strategies. For the driver, launching start involves first deeply pressing the brake pedal to hold the vehicle stationary, then pressing the accelerator to generate a certain initial torque on the wheels, and finally quickly releasing the brake pedal to initiate the launch start.

[0044] Traditional launch control cannot distinguish between intentional and erroneous driver actions, such as pressing the brake pedal first and then the accelerator, or the accelerator first and then the brake pedal. For example, if the driver presses the accelerator to start the vehicle and an emergency or unexpected situation occurs, and the driver, nervous and unable to release the accelerator, presses the brake pedal deeply, the vehicle may mistakenly enter launch control. In this case, the driver's true intention is to stop the vehicle without starting, and there is no control strategy to determine the order of the brake and accelerator pedals. Furthermore, since this process occurs so quickly and the vehicle speed is zero, the vehicle may mistakenly enter launch control.

[0045] Furthermore, even if the driver quickly releases the brake pedal but doesn't fully release it to zero, there's still a small amount of braking force. At this point, the driving force is much greater than the braking force, allowing the car to launch. As the vehicle speed increases, the continued presence of braking force can cause abnormal wear of the brake pads and overheating of the brake discs, endangering driving safety.

[0046] This content will be described in detail in the following exemplary embodiments:

[0047] See also Figure 1 , Figure 1 A method for handling an abnormal launch in accordance with an exemplary embodiment of the present invention is shown, comprising the following steps:

[0048] Obtaining the vehicle power-on status and vehicle fault status, and entering a default mode when power-on is successful and there are no faults; the default mode is: when the brake pedal state and the accelerator pedal state are both in a non-released state, outputting a command to execute only the brake control;

[0049] In the default mode, the brake pedal state and the accelerator pedal state are obtained, and when the brake pedal state is not released and the accelerator pedal state is released, the default state is adjusted to the launch start preparation mode;

[0050] In the launch start preparation mode, obtaining the brake pedal state and the accelerator pedal state, and when the brake pedal state and the accelerator pedal state are both in a non-released state, adjusting the launch start preparation mode to the launch start mode;

[0051] In the launch control mode, the brake pedal state is obtained. When the brake pedal state is not released, the real-time vehicle speed is obtained. When the real-time vehicle speed is greater than a first preset value, the launch control mode is adjusted to the default mode.

[0052] Specifically, in this exemplary embodiment, after initialization (power-on and fault judgment) is completed, it is first determined whether there is a brake pedal state and no accelerator pedal state, that is, it is determined at this time that the driver steps on the brake first, and then enters the launch start preparation mode; then in the launch start preparation mode, it is determined whether the driver steps on the accelerator pedal without releasing the brake pedal, that is, it corresponds to determining that the brake pedal state and the accelerator pedal state are both non-released. If so, the launch start preparation mode is adjusted to the launch start mode.

[0053] Then, in launch mode, launch control begins. Under normal circumstances, the driver should quickly release the brake pedal, allowing the vehicle to directly receive an output and complete the launch. However, if the driver releases the brake pedal too slowly in launch mode, causing the vehicle's driving torque to exceed the braking torque, the vehicle can launch. However, as the vehicle speed increases, braking force remains. If braking force exists at a certain speed, this can cause abnormal wear of the brake pads and overheating of the brake discs. Therefore, in this exemplary embodiment, in launch mode, the brake pedal status is obtained. When the brake pedal status is not released (i.e., the driver has not fully released the brake pedal), the real-time vehicle speed is obtained. When the real-time vehicle speed is greater than a first preset value, the launch mode is adjusted to the default mode. In this case, if both the brake pedal status and the accelerator pedal status are not released, a command to execute only the braking control is output, and an acceleration command from the accelerator pedal is not received. If both the brake pedals are not released and the accelerator pedal is released, only the braking control command is executed because only the brake pedal is in use. If the car returns to the default mode at this time, it is considered that the launch control has failed, and the driver needs to perform the launch control operation again before launching the car again.

[0054] Specifically, this approach eliminates the need to modify or adjust the existing vehicle control model architecture; it simply adds several judgment conditions and control strategies to the existing launch control module. During launch control, if the driver makes an improper or erroneous operation, or if the brake pedal is shallowly depressed (perhaps only 10-20 degrees of release) and torque is applied to the wheels, the vehicle returns to a default mode of braking only when it reaches a certain speed. This means that this exemplary embodiment can directly exit launch control mode at the initial stage of this situation, i.e., upon determining a certain vehicle speed (a first preset value), thereby preventing energy waste, excessive brake pad wear, and brake disc overheating, thereby improving driving safety.

[0055] It should be noted that the first preset value is a configurable value, which can be set comprehensively according to the vehicle model, vehicle age, vehicle type, etc. In addition, the first preset value can be set to a smaller value so that exit can be achieved when the vehicle speed is relatively low.

[0056] In addition, regarding the released state and non-released state: the released state means that the pedal is completely released, that is, the brake pedal or the accelerator pedal is not stepped on by the driver; the non-released state means that the pedal is partially stepped on or completely stepped on, that is, the brake pedal or the accelerator pedal is stepped on hard or partially by the driver.

[0057] More preferably, in an exemplary embodiment, the method further comprises the following steps:

[0058] In the default mode, the brake pedal state and the accelerator pedal state are obtained. When the brake pedal state is released, or both the brake pedal state and the accelerator pedal state are not released, the default state is maintained.

[0059] Specifically, in this exemplary embodiment, the steps in the aforementioned exemplary embodiments can be combined to determine the order in which the brake pedal and accelerator pedal are pressed, thereby more clearly determining the driver's true intention and preventing or reducing safety hazards caused by incorrect operations. That is, before the start of a conventional launch start, the driver's true intention is fully determined through two conditions: (1) In the default state, first determine whether the brake pedal state is met and the accelerator pedal state is not met, thereby determining that the driver first pressed the brake, and then entering the launch start preparation state; (2) At the same time, in the launch start preparation state, if the brake pedal state is not met at this time, it is determined that the driver has abandoned the launch start or has no launch start intention, and then returns to the default state.

[0060] More preferably, in an exemplary embodiment, in the launch start preparation mode, the brake pedal state and the accelerator pedal state are obtained. When the brake pedal state and the accelerator pedal state are both in a non-released state, the launch start preparation mode is adjusted to the launch start mode, and the following is replaced:

[0061] In the launch start preparation mode, the brake pedal status and the accelerator pedal status are obtained. When the brake pedal status and the accelerator pedal status are both in the non-released state, the braking torque generated by the brake pedal and the driving torque generated by the accelerator pedal are obtained; when the braking torque is greater than the driving torque, the launch start preparation mode is adjusted to the launch start mode; when the braking torque is less than the driving torque, the launch start preparation mode is adjusted to the default mode.

[0062] Specifically, in this exemplary embodiment, the situation of the launch start preparatory mode is preferably developed, and the main corresponding problem is: in the existing launch start control, the braking signal is only a state quantity. When there is braking force (regardless of size), the braking signal is 1, and when there is no braking force, it is 0; when the driver presses the brake pedal and the accelerator pedal at the same time to prepare for the launch start mode, it is possible that the braking force applied by the driver is small but the braking signal exists. At this time, the driving force is also output. If the driving force is greater than the braking force, the car overcomes the braking force to move forward, which will cause energy waste and abnormal wear of the brake pads.

[0063] In this exemplary embodiment, in launch start preparation mode, when both the brake pedal and accelerator pedal are in a non-released state, the vehicle is in a standard state of preparation for launch start mode. The braking torque generated by the brake pedal and the driving torque generated by the accelerator pedal are then acquired. When the braking torque is greater than the driving torque, the launch start preparation mode is switched to launch start mode. When the braking torque is less than the driving torque, the launch start preparation mode is switched to the default mode. This avoids the aforementioned issue where the driver applies a small amount of braking force but a brake signal is present, and if the driving force is greater than the braking force, the vehicle advances against the braking force, resulting in energy waste and abnormal wear of the brake pads. Launch start preparation mode is switched to the default mode. In this case, since the brake pedal is in a non-released state, a command to execute only braking control is output, and the vehicle does not move forward.

[0064] It should be noted that the calculation method of the braking torque and the driving torque can refer to the following method, or any other method in the existing technology: the driving torque is obtained by the driving motor torque T*speed ratio i; and the braking torque is obtained by pushing the brake caliper through the oil circuit to clamp the brake disc after the brake pedal is pressed to generate a total braking torque. The greater the pedal opening of the brake pedal, the greater the braking torque.

[0065] More preferably, in an exemplary embodiment, the method further comprises the following steps:

[0066] In the launch mode, the time during which the brake pedal and the accelerator pedal are both in a non-released state is obtained, and when the time exceeds a second preset value, the launch mode is adjusted to the default mode.

[0067] Specifically, in this exemplary embodiment, if the driver simultaneously presses the brake and accelerator pedals for an extended period in Launch Start mode, Launch Start mode is exited and the vehicle enters default mode, causing Launch Start to fail. This prevents overheating caused by the motor maintaining torque output at rest. Under normal circumstances, if the driver quickly releases the brake pedal in Launch Start mode (before the time exceeds a second preset value), the vehicle returns to default mode, at which point torque is directly applied to the vehicle's wheels, completing Launch Start.

[0068] It should be noted that the second preset value is a configurable value, which can be comprehensively selected according to various situations such as vehicle type and motor type.

[0069] Having the same inventive concept as the above exemplary embodiment, another exemplary embodiment of the present invention provides an abnormal launch start processing device, comprising:

[0070] Initialization module: used to obtain the power-on status and fault status of the vehicle. When the power-on is successful and there is no fault, it enters the default mode; the default mode is: when the brake pedal state and the accelerator pedal state are both in the non-released state, the output is the instruction to execute only the brake control;

[0071] Launch start preparation judgment module: used to obtain the brake pedal status and accelerator pedal status in the default mode. When the brake pedal status is not released and the accelerator pedal status is released, the default state is adjusted to the launch start preparation mode;

[0072] Launch Start Detection Module: This module is used to obtain the brake pedal status and accelerator pedal status in the launch start preparation mode. When both the brake pedal status and the accelerator pedal status are not released, the launch start preparation mode is adjusted to the launch start mode.

[0073] Abnormal launch start judgment module: used to obtain the brake pedal status in the launch start mode, and when the brake pedal status is not released, obtain the real-time vehicle speed. When the real-time vehicle speed is greater than a first preset value, adjust the launch start mode to the default mode.

[0074] Similar to the aforementioned exemplary embodiment, this approach eliminates the need to modify or adjust the existing vehicle control model architecture; instead, it simply adds several judgment conditions and control strategies to the existing launch control module. Specifically, during launch control, if the driver makes an improper or erroneous operation, or if the brake pedal is depressed shallowly (perhaps only 10-20 degrees of release) and torque is applied to the wheels, the vehicle returns to a default braking-only mode when it reaches a certain speed. This exemplary embodiment allows the launch control mode to be directly exited at the initial stage of this situation, i.e., upon determining a certain vehicle speed (a first predetermined value), preventing energy waste, excessive brake pad wear, and brake disc overheating, thereby improving driving safety.

[0075] More preferably, in an exemplary embodiment, the launch preparation determination module is further configured to:

[0076] In the default mode, the brake pedal state and the accelerator pedal state are obtained. When the brake pedal state is released, or both the brake pedal state and the accelerator pedal state are not released, the default state is maintained.

[0077] Similar to the aforementioned exemplary embodiment of the method, the steps in the aforementioned exemplary embodiment can be used to simultaneously determine the order in which the brake pedal and the accelerator pedal are pressed, thereby more clearly determining the driver's true intention and preventing or reducing safety hazards caused by incorrect operations. That is, before the start of a conventional launch start, the driver's true intention is fully determined by two conditions: (1) In the default state, first determine whether the brake pedal state is met and the accelerator pedal state is not met, thereby determining that the driver first pressed the brake, and then entering the launch start preparation state; (2) At the same time, in the launch start preparation state, if the brake pedal state is not met at this time, then determine that the driver has abandoned the launch start or has no intention of launching the car, and then return to the default state.

[0078] More preferably, in an exemplary embodiment, the launch start determination module is replaced by:

[0079] Used to obtain the brake pedal status and accelerator pedal status in the launch start preparation mode. When the brake pedal status and accelerator pedal status are both in the non-released state, obtain the braking torque generated by the brake pedal and the driving torque generated by the accelerator pedal; when the braking torque is greater than the driving torque, adjust the launch start preparation mode to the launch start mode; when the braking torque is less than the driving torque, adjust the launch start preparation mode to the default mode.

[0080] Similar to the aforementioned exemplary method, in launch start preparation mode, when both the brake pedal and accelerator pedal are in a non-released state, the vehicle is in a standard state of preparation for launch start mode. At this time, the braking torque generated by the brake pedal and the driving torque generated by the accelerator pedal are acquired. When the braking torque is greater than the driving torque, the launch start preparation mode is switched to the launch start mode. When the braking torque is less than the driving torque, the launch start preparation mode is switched to the default mode. This avoids the aforementioned issue where the driver applies a small amount of braking force but a brake signal is present, and if the driving force is greater than the braking force, the vehicle advances against the braking force, resulting in energy waste and abnormal wear of the brake pads. The launch start preparation mode is switched to the default mode. In this case, since the brake pedal is in a non-released state, a command to execute only braking control is output, and the vehicle does not move forward.

[0081] More preferably, in an exemplary embodiment, the abnormal launch start determination module is further configured to:

[0082] In the launch mode, the time during which the brake pedal and the accelerator pedal are both in a non-released state is obtained, and when the time exceeds a second preset value, the launch mode is adjusted to the default mode.

[0083] Similar to the aforementioned exemplary method, if the driver simultaneously presses the brake and accelerator pedals for an extended period in Launch Start mode, Launch Start mode is exited and the vehicle enters default mode, causing Launch Start to fail. This prevents overheating caused by the motor maintaining torque output at rest. Under normal circumstances, if the driver quickly releases the brake pedal in Launch Start mode (before the time exceeds a second predetermined value), the vehicle returns to default mode, at which point torque is directly applied to the vehicle's wheels, completing Launch Start.

[0084] With the same inventive concept as the above exemplary embodiment, another exemplary embodiment of the present invention provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the steps of the abnormal launch start processing method based on an electric vehicle are executed.

[0085] Based on this understanding, the technical solution of this embodiment, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product (program product). The computer software product is stored in a storage medium and includes a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present invention.

[0086] The program product may be implemented in any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or component, or any combination thereof. More specific examples (a non-exhaustive list) of readable storage media include: an electrical connection with one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof.

[0087] A computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, which carries readable program code. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A readable signal medium may also be any readable medium other than a readable storage medium that can transmit, propagate, or transfer a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0088] The program code embodied on the readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

[0089] The program code for performing the operations of the present invention may be written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Java, C++, and the like, as well as conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user computing device, partially on the user device, as a stand-alone software package, partially on the user computing device and partially on a remote computing device, or entirely on a remote computing device or server. In cases involving a remote computing device, the remote computing device may be connected to the user computing device via any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computing device (e.g., via the Internet using an Internet service provider).

[0090] With the same inventive concept as the above exemplary embodiment, another exemplary embodiment of the present invention provides an electric vehicle, comprising a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and when the processor runs the computer program, the steps of the abnormal launch start processing method based on the electric vehicle are executed.

[0091] The components of the electric vehicle may include but are not limited to: the at least one processing unit mentioned above, the at least one storage unit mentioned above, and a bus connecting different system components (including the storage unit and the processing unit).

[0092] The storage unit stores program codes that can be executed by the processing unit, so that the processing unit performs the steps according to various exemplary embodiments of the present invention described in the method section of the "Exemplary Embodiments" above. For example, the processing unit can perform the following steps: Figure 1 The method shown in .

[0093] The storage unit may include a readable medium in the form of a volatile memory unit, such as a random access memory unit (RAM) and / or a cache memory unit, and may further include a read-only memory unit (ROM).

[0094] The storage unit may also include a program / utility having a set (at least one) of program modules, such program modules including but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which or some combination may include an implementation of a network environment.

[0095] The bus can represent one or more of several types of bus structures, including a memory unit bus or memory unit controller, a peripheral bus, an accelerated graphics port, a processing unit, or a local bus using any of a variety of bus architectures.

[0096] The electric vehicle can also communicate with one or more external devices (e.g., a keyboard, pointing device, Bluetooth device, etc.), one or more devices that enable a user to interact with the electric vehicle, and / or any device that enables the electric vehicle to communicate with one or more other computing devices (e.g., a router, modem, etc.). This communication can occur via an input / output (I / O) interface. Furthermore, the electric vehicle can communicate with one or more networks (e.g., a local area network (LAN), a wide area network (WAN), and / or a public network such as the Internet) via a network adapter. The network adapter communicates with other modules of the electric vehicle via a bus. It should be understood that other hardware and / or software modules can be used in conjunction with the electric vehicle, including but not limited to microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0097] Through the above description, it is easy for those skilled in the art to understand that the example embodiments described herein can be implemented through software or through a combination of software and necessary hardware. Therefore, the technical solution according to this exemplary embodiment can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (such as a CD-ROM, a USB flash drive, a mobile hard drive, etc.) or on a network, and includes several instructions to enable a computing device (such as a personal computer, a server, a terminal device, or a network device, etc.) to execute the method according to this exemplary embodiment.

[0098] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications can be made based on the above descriptions. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications derived therefrom remain within the scope of protection of the present invention.

Claims

1. A method for handling an abnormal launch, characterized by: The following steps are involved: Obtaining the vehicle power-on status and vehicle fault status, and entering a default mode when power-on is successful and there are no faults; the default mode is: when the brake pedal state and the accelerator pedal state are both in a non-released state, outputting a command to execute only the brake control; In the default mode, the brake pedal state and the accelerator pedal state are obtained, and when the brake pedal state is not released and the accelerator pedal state is released, the default state is adjusted to the launch start preparation mode; In the launch start preparation mode, obtaining the brake pedal state and the accelerator pedal state, and when the brake pedal state and the accelerator pedal state are both in a non-released state, adjusting the launch start preparation mode to the launch start mode; In launch mode, the brake pedal status is obtained. When the brake pedal status is not released, the real-time vehicle speed is obtained. When the real-time vehicle speed is greater than a first preset value, the launch mode is adjusted to the default mode. The first preset value is set to a smaller value so that exit can be achieved when the vehicle speed is relatively low.

2. The method for handling an abnormal launch according to claim 1, characterized in that: The method further comprises the following steps: In the default mode, the brake pedal state and the accelerator pedal state are obtained. When the brake pedal state is released, or both the brake pedal state and the accelerator pedal state are not released, the default state is maintained.

3. The method for handling an abnormal launch according to claim 1, wherein: In the launch start preparation mode, the brake pedal state and the accelerator pedal state are obtained. When the brake pedal state and the accelerator pedal state are both in the non-released state, the launch start preparation mode is adjusted to the launch start mode, and the following is replaced: In the launch start preparation mode, the brake pedal status and the accelerator pedal status are obtained. When the brake pedal status and the accelerator pedal status are both in the non-released state, the braking torque generated by the brake pedal and the driving torque generated by the accelerator pedal are obtained; when the braking torque is greater than the driving torque, the launch start preparation mode is adjusted to the launch start mode; when the braking torque is less than the driving torque, the launch start preparation mode is adjusted to the default mode.

4. The method for handling an abnormal launch according to claim 1, wherein: The method further comprises the following steps: In the launch mode, the time during which the brake pedal and the accelerator pedal are both in a non-released state is obtained, and when the time exceeds a second preset value, the launch mode is adjusted to the default mode.

5. An abnormal launch control device, characterized in that: include: Initialization module: used to obtain the power-on status and fault status of the vehicle. When the power-on is successful and there is no fault, it enters the default mode; the default mode is: when the brake pedal state and the accelerator pedal state are both in the non-released state, the output is the instruction to execute only the brake control; Launch start preparation judgment module: used to obtain the brake pedal status and accelerator pedal status in the default mode. When the brake pedal status is not released and the accelerator pedal status is released, the default state is adjusted to the launch start preparation mode; Launch Start Detection Module: This module is used to obtain the brake pedal status and accelerator pedal status in the launch start preparation mode. When both the brake pedal status and the accelerator pedal status are not released, the launch start preparation mode is adjusted to the launch start mode. Abnormal launch start judgment module: used to obtain the brake pedal status in the launch start mode, and when the brake pedal status is not released, obtain the real-time vehicle speed. When the real-time vehicle speed is greater than a first preset value, the launch start mode is adjusted to the default mode; the first preset value is set to a smaller value so that exit can be achieved when the vehicle speed is relatively low.

6. The abnormal launch start processing device according to claim 5, characterized in that: The ejection start preparation judgment module is also used for: In the default mode, the brake pedal state and the accelerator pedal state are obtained. When the brake pedal state is released, or both the brake pedal state and the accelerator pedal state are not released, the default state is maintained.

7. The abnormal launch start processing device according to claim 5, characterized in that: The ejection start judgment module is replaced by: Used to obtain the brake pedal status and accelerator pedal status in the launch start preparation mode. When the brake pedal status and accelerator pedal status are both in the non-released state, obtain the braking torque generated by the brake pedal and the driving torque generated by the accelerator pedal; when the braking torque is greater than the driving torque, adjust the launch start preparation mode to the launch start mode; when the braking torque is less than the driving torque, adjust the launch start preparation mode to the default mode.

8. The abnormal launch start processing device according to claim 5, characterized in that: The abnormal ejection start judgment module is further used for: In the launch mode, the time during which the brake pedal and the accelerator pedal are both in a non-released state is obtained, and when the time exceeds a second preset value, the launch mode is adjusted to the default mode.

9. A computer-readable storage medium, applied to an electric vehicle, characterized in that: The computer-readable storage medium stores a computer program, which, when executed by a processor, executes the steps of the abnormal launch control method according to any one of claims 1 to 4.

10. An electric vehicle comprising a memory and a processor, wherein the memory stores a computer program that can be run on the processor, wherein: When the processor runs the computer program, the processor performs the steps of the abnormal launch control method according to any one of claims 1 to 4.

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