Speed limiting method and device of electric vehicle, vehicle and storage medium

Abstract

The invention relates to a speed limiting method and device of an electric vehicle, a vehicle and a storage medium, and the method comprises the steps that voice information of a user or triggering information of a speed limiting key is received; a speed limiting instruction of the vehicle is generated according to the voice information or the triggering information, a speed limiter of the vehicle is started in response to the speed limiting instruction, and a target speed limiting value of the vehicle is obtained according to the speed limiting instruction; and under the condition that the current speed of the vehicle reaches the target speed limit value, the speed of the vehicle is limited according to the speed limit torque, so that the vehicle is controlled to run at the target speed. According to the embodiment of the invention, the speed of the vehicle can be limited according to the speed limiting torque under the condition that the current speed of the vehicle reaches the target speed limiting value, so that the vehicle is effectively controlled to run at the target speed. According to the embodiment of the invention, all-road-condition self-adaptive speed limiting can be realized, so that a driver does not need to pay attention to overspeed during driving, the fatigue degree of the driver is relieved, and the sense of safety of the driver and passengers is improved.

Description

Technical Field

[0001] The present application relates to the field of electric vehicle control technology, and in particular to a speed limiting method, device, vehicle and storage medium for an electric vehicle. Background Art

[0002] According to market feedback, users have a need to actively set the driving speed. Currently, automatic speed limit can only be turned on in scenes such as adaptive cruise control, which greatly limits its scope of application. It is recommended to upgrade it to be able to be turned on and off at any time, even in common driving modes. How to achieve the driver's speed limit through strategic innovation without changing the mechanical structure of electric vehicles or adding equipment is a control technology with great application value.

[0003] In the related technology, the speed limit information of the current road section can be obtained through sensors, and when the vehicle speed exceeds the speed limit information of the current road section, a warning message is given to the driver or the vehicle speed is reduced by braking or other means to make the driver travel below the speed limit.

[0004] However, the relevant technology only limits the speed according to the speed limit information and cannot effectively control the speed of the vehicle, which affects the user's driving experience. It has low intelligence and practicality and needs to be improved urgently. Summary of the invention

[0005] The present application provides a speed limit method, device, vehicle and storage medium for an electric vehicle to solve the problems that the related technology only limits the speed according to the speed limit information, cannot effectively control the speed limit of the vehicle, affects the user's driving experience, and has low intelligence and practicality.

[0006] A first aspect of the present application provides a speed limit method for an electric vehicle, comprising the following steps: receiving a user's voice information or trigger information of a speed limit button; generating a vehicle speed limit instruction according to the voice information or the trigger information, and in response to the speed limit instruction, starting the vehicle's speed limiter, and obtaining a target speed limit value of the vehicle according to the speed limit instruction; and when the vehicle's current speed reaches the target speed limit value, limiting the speed of the vehicle according to the speed limit torque, so as to control the vehicle to maintain driving at the target speed.

[0007] Optionally, in one embodiment of the present application, the method further includes: displaying the activation state of the speed limiter and the target speed limit value of the vehicle on a display screen of the vehicle.

[0008] Optionally, in one embodiment of the present application, before controlling the vehicle to maintain driving at the target speed, it also includes: collecting the accelerator pedal opening of the vehicle, and determining whether the accelerator pedal opening is less than or equal to a preset opening threshold; if the accelerator pedal opening is less than or equal to the preset opening threshold, limiting the output torque of the vehicle with the speed limiter, generating a speed limit torque of the vehicle, and limiting the speed of the vehicle according to the speed limit torque; if the accelerator pedal opening is greater than the preset opening threshold, determining that the speed limiter is in a suspended working state, generating the actual torque of the vehicle according to the accelerator pedal opening, and suspending the speed limit of the vehicle according to the actual torque until the vehicle completes the overtaking action, lifts the accelerator pedal and the current vehicle speed is restored to the target limit value, and the speed limiter continues to work to monitor the vehicle speed running state.

[0009] Optionally, in one embodiment of the present application, obtaining the target speed limit value of the vehicle according to the speed limit instruction includes: obtaining a trigger signal for speed limit adjustment of the vehicle; and obtaining an increase or decrease in the target speed limit according to the speed limit adjustment trigger signal to adjust the target speed limit.

[0010] Optionally, in one embodiment of the present application, after limiting the speed of the vehicle, it also includes: generating speed limit reminder information of the vehicle according to the working status of the speed limiter; matching the best reminder method according to the speed limit reminder information, and controlling the vehicle to provide acoustic reminders, optical reminders and / or text speed limit reminders according to the best reminder method.

[0011] A second aspect of the present application provides a speed limit device for an electric vehicle, comprising: a receiving module for receiving a user's voice information or trigger information of a speed limit button; a generating module for generating a vehicle speed limit instruction according to the voice information or the trigger information, and in response to the speed limit instruction, starting the speed limiter of the vehicle, and obtaining a target speed limit value of the vehicle according to the speed limit instruction; a speed limit module for limiting the speed of the vehicle according to the speed limit torque when the current speed of the vehicle reaches the target speed limit value, so as to control the vehicle to maintain driving at the target speed.

[0012] Optionally, in one embodiment of the present application, it further includes: a display module, used to display the opening state of the speed limiter and the target speed limit value of the vehicle on a display screen of the vehicle.

[0013] Optionally, in one embodiment of the present application, it also includes: a collection module, which is used to collect the accelerator pedal opening of the vehicle before controlling the vehicle to maintain the target speed, and determine whether the accelerator pedal opening is less than or equal to a preset opening threshold; a limiting module, which is used to limit the output torque of the vehicle using the speed limiter, generate the speed limit torque of the vehicle, and limit the speed of the vehicle according to the speed limit torque when the accelerator pedal opening is less than or equal to the preset opening threshold; a control module, which is used to determine that the speed limiter is in a suspended working state when the accelerator pedal opening is greater than the preset opening threshold, generate the actual torque of the vehicle according to the accelerator pedal opening, and suspend the speed limit of the vehicle according to the actual torque until the vehicle completes the overtaking action, lifts the accelerator pedal and the current vehicle speed is restored to the target limit value, and then controls the speed limiter to continue working to monitor the vehicle speed running state.

[0014] Optionally, in one embodiment of the present application, the generation module includes: an acquisition unit, used to obtain a trigger signal for adjusting the speed limit of the vehicle; an adjustment unit, used to obtain an increase or decrease in the target speed limit according to the speed limit adjustment trigger signal to adjust the target speed limit.

[0015] Optionally, in one embodiment of the present application, it also includes: an information generation module, which is used to generate speed limit reminder information of the vehicle according to the working status of the speed limiter after the speed of the vehicle is limited; a reminder module, which is used to match the best reminder method according to the speed limit reminder information, and control the vehicle to provide acoustic reminders, optical reminders and / or text speed limit reminders according to the best reminder method.

[0016] A third aspect of the present application provides a vehicle, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the speed limiting method for an electric vehicle as described in the above embodiment.

[0017] A fourth aspect of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, which, when executed by a processor, implements the above-mentioned speed limiting method for an electric vehicle.

[0018] The embodiment of the present application can limit the speed of the vehicle according to the speed limit torque when the current speed of the vehicle reaches the target speed limit value, thereby effectively controlling the vehicle to maintain the target speed. The embodiment of the present application can adaptively limit the speed under all road conditions, so that the driver does not have to pay attention to speeding when driving, which reduces the driver's fatigue and improves the sense of security of the driver and passengers. Therefore, it solves the problems that the related technology only limits the speed according to the speed limit information, cannot effectively control the speed of the vehicle, affects the user's driving experience, and has low intelligence and practicality.

[0019] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0021] Figure 1 A flow chart of a speed limiting method for an electric vehicle provided according to an embodiment of the present application;

[0022] Figure 2 This is a flow chart of a speed limiting method for an electric vehicle according to an embodiment of the present application;

[0023] Figure 3 A schematic diagram of the structure of a speed limiting device for an electric vehicle provided according to an embodiment of the present application;

[0024] Figure 4 It is a schematic diagram of the structure of a vehicle provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0025] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0026] The following describes the speed limiting method, device, vehicle and storage medium of the electric vehicle of the embodiment of the present application with reference to the accompanying drawings. In view of the problem that the related technology mentioned in the above background technology only limits the speed according to the speed limit information, cannot effectively control the speed limit of the vehicle, affects the user's driving experience, and has low intelligence and practicality, the present application provides a speed limiting method for an electric vehicle, which can limit the speed of the vehicle according to the speed limit torque when the current speed of the vehicle reaches the target speed limit value, so as to effectively control the vehicle to maintain the target speed. The embodiment of the present application can adaptively limit the speed under all road conditions, so that the driver does not have to pay attention to speeding when driving, reduces the driver's fatigue, and improves the sense of security of the driver and passengers. Therefore, it solves the problems that the related technology only limits the speed according to the speed limit information, cannot effectively control the speed limit of the vehicle, affects the user's driving experience, and has low intelligence and practicality.

[0027] Specifically, Figure 1 A schematic flow chart of a speed limiting method for an electric vehicle provided in an embodiment of the present application.

[0028] like Figure 1 As shown, the speed limiting method of the electric vehicle comprises the following steps:

[0029] In step S101, a user's voice information or trigger information of a speed limit button is received.

[0030] It can be understood that the voice information in the embodiment of the present application can be received after the voice speed limit switch is turned on, and the trigger information of the speed limit button can be received after the speed limit switch is turned on.

[0031] During the actual implementation process, the embodiment of the present application can receive the user's voice information after the voice speed limit switch is turned on, or receive the trigger information of the user's speed limit button after the speed limit switch is turned on, thereby providing support for subsequent speed limiting of the vehicle based on the voice information and trigger information, ensuring that the driver can activate the signal switch through the manual / voice function, and then identifying the driver's speed limit demand.

[0032] In step S102, a speed limit instruction of the vehicle is generated according to the voice information or the trigger information, and in response to the speed limit instruction, the speed limiter of the vehicle is started, and the target speed limit value of the vehicle is obtained according to the speed limit instruction.

[0033] It is understandable that the target speed limit value in the embodiment of the present application can be, but is not limited to, 60km / h; the target speed limit value can be, but is not limited to, automatically identified by voice control, driver setting, or camera. When the voice speed limit switch is turned on, the vehicle speed can be input by voice as the target speed limit value; the target speed limit value can also be adjusted by voice input at any time according to the driver's needs; when the voice switch is turned off and the manual speed limit switch is turned on, the target speed limit value can also be set according to the driver's needs. In addition, the target speed limit value can automatically identify the road speed limit value through the camera; the speed limiter switch signal in the embodiment of the present application includes a voice on / button on signal A, a voice off / button off signal B, a voice on signal C, and a voice off signal D.

[0034] As a possible implementation method, the embodiment of the present application can generate a speed limit instruction for the vehicle based on voice information or trigger information, and in response to the speed limit instruction, start the vehicle's speed limiter, and obtain the vehicle's target speed limit value based on the speed limit instruction. For example, the embodiment of the present application can generate a speed limit instruction for the vehicle when receiving a voice message of "The current vehicle speed is too fast, please slow down!", and in response to the speed limit instruction, obtain the vehicle's target speed limit value of 60km / h; for another example, the embodiment of the present application can generate a speed limit instruction for the vehicle after the speed limit button is turned on, and obtain the vehicle's target speed limit value of 60km / h.

[0035] The embodiment of the present application can obtain the target speed limit value of the vehicle according to the speed limit instruction, thereby improving the in-vehicle intelligent experience and entertainment, reducing the complexity of operation, and realizing convenient control of the vehicle during driving.

[0036] Optionally, in one embodiment of the present application, obtaining the target speed limit value of the vehicle includes: obtaining a trigger signal for adjusting the speed limit of the vehicle; and obtaining an increase or decrease in the target speed limit according to the speed limit adjustment trigger signal to adjust the target speed limit.

[0037] It can be understood that the trigger signal for speed limit adjustment in the embodiment of the present application includes but is not limited to the speed limit adjustment button plus signal E and the speed limit adjustment button minus signal F.

[0038] During the actual implementation process, the embodiment of the present application can obtain a trigger signal for the speed limit adjustment of the vehicle after the speed limiter switch is turned on, and obtain an increase or decrease in the target speed limit according to the speed limit adjustment trigger signal to adjust the target speed limit. When the plus key E is short pressed once, the speed limit target value is increased by 1; when the minus key F is short pressed once, the speed limit target value is reduced by 1; when the plus key E is long pressed once, the speed limit target value is successively added to the original target speed limit value by a certain value according to the key pressing duration; when the minus key F is long pressed once, the speed limit target value is successively reduced by a certain value according to the key pressing duration.

[0039] The embodiment of the present application can obtain the increase or decrease of the target speed limit according to the speed limit adjustment trigger signal to adjust the target speed limit. The target speed limit vehicle speed can be adjusted up and down by the rebound-type lever. If the lever is long pressed, the target speed limit vehicle speed can be continuously accumulated or decreased, thereby ensuring the reliability of the speed limit and improving the intelligence of the vehicle.

[0040] In step S103, when the current vehicle speed reaches the target speed limit value, the vehicle speed is limited according to the speed limit torque to control the vehicle to maintain running at the target speed.

[0041] It can be understood that the speed limiting torque in the embodiment of the present application can limit the power output of the vehicle, thereby achieving the effect of limiting the vehicle speed; the vehicle in the embodiment of the present application can be all pure electric-driven vehicles, including but not limited to pure electric vehicles, extended-range electric vehicles, series hybrid electric vehicles and fuel cell vehicles, etc.

[0042] During the actual implementation process, the embodiments of the present application can determine that the current vehicle satisfies the speed limit behavior when the current speed of the vehicle reaches the target speed limit value. At this time, a speed limiter torque limit state signal is issued, and the vehicle is speed-limited according to the speed limit torque to control the vehicle to maintain the target speed. For example, the embodiments of the present application can determine that the current vehicle satisfies the speed limit behavior when the current speed of the vehicle is 100km / h and the target speed limit value is 100km / h, that is, the current speed of the vehicle reaches the target speed limit value. At this time, the vehicle is speed-limited according to the speed limit torque to effectively control the vehicle to maintain the target speed, for example, the vehicle is controlled to maintain a speed of 80km / h.

[0043] The embodiment of the present application can limit the speed of the vehicle according to the speed limit torque, thereby ensuring adaptive speed limit for all road conditions and effectively controlling the vehicle to maintain driving at a target speed, so that the driver does not have to pay attention to speeding all the time while driving, reducing the driver's fatigue and improving the sense of safety of the driver and passengers.

[0044] Optionally, in one embodiment of the present application, before controlling the vehicle to maintain driving at the target speed, it also includes: collecting the accelerator pedal opening of the vehicle, and determining whether the accelerator pedal opening is less than or equal to a preset opening threshold; if the accelerator pedal opening is less than or equal to the preset opening threshold, using the speed limiter to limit the output torque of the vehicle, generating a speed limit torque of the vehicle, and limiting the speed of the vehicle according to the speed limit torque; if the accelerator pedal opening is greater than the preset opening threshold, it is determined that the speed limiter is in a suspended working state, the actual torque of the vehicle is generated according to the accelerator pedal opening, and the speed limit of the vehicle is suspended according to the actual torque until the vehicle completes the overtaking action, lifts the accelerator pedal and the current vehicle speed returns to the target limit value, the speed limiter continues to work to monitor the vehicle speed running state.

[0045] It can be understood that the accelerator pedal opening in the embodiment of the present application can be obtained based on the accelerator pedal opening signal. The accelerator pedal opening signal refers to the signal sent by the car accelerator pedal to the VCU (Vehicle Control Unit), and the accelerator pedal opening signal is a 0-100% signal value.

[0046] During the actual implementation process, the embodiment of the present application can collect the vehicle's accelerator pedal opening and determine whether the accelerator pedal opening is less than or equal to a certain opening threshold. When the accelerator pedal opening is less than or equal to a certain opening threshold, the speed limiter is used to limit the vehicle's output torque, generate the vehicle's speed limit torque, and limit the vehicle's speed according to the speed limit torque to prevent the vehicle from speeding, which is beneficial for the driver to drive safely. In terms of driving behavior, it can reduce the driver's speed limit anxiety when using assisted driving, and provide assistance for driving flexibility.

[0047] Furthermore, the embodiment of the present application can determine that the speed limiter is in a suspended working state when the accelerator pedal opening is greater than a certain opening threshold, generate the actual torque of the vehicle according to the accelerator pedal opening, and suspend the speed limit of the vehicle according to the actual torque until the vehicle completes the overtaking action, lifts the accelerator pedal and the current vehicle speed is restored to the target limit value. The speed limiter continues to work to monitor the vehicle's speed running state, ensure that the vehicle can be controlled to a speed limit in a targeted manner, improve the intelligence of the vehicle, and ensure the reliability of the vehicle.

[0048] It should be noted that the preset opening threshold can be set by those skilled in the art according to actual conditions and is not specifically limited here.

[0049] Optionally, in one embodiment of the present application, after limiting the speed of the vehicle, it also includes: generating speed limit reminder information of the vehicle according to the working status of the speed limiter; matching the best reminder method according to the speed limit reminder information, and controlling the vehicle to provide acoustic reminders, optical reminders and / or text speed limit reminders according to the best reminder method.

[0050] It can be understood that the acoustic reminder in the embodiment of the present application can be but is not limited to a voice reminder, the optical reminder can be but is not limited to flashing lights on the vehicle dashboard, and the text speed limit reminder can be but is not limited to text displayed on the vehicle display.

[0051] For example, an embodiment of the present application can generate a speed limit reminder information for a vehicle according to the working status of the speed limiter, match the best reminder method according to the speed limit reminder information, and control the vehicle voice broadcast "Please pay attention to the current speed!" according to the best reminder method, thereby reminding the user to drive within the target speed limit range; for another example, an embodiment of the present application can generate a speed limit reminder information for a vehicle according to the working status of the speed limiter, match the best reminder method according to the speed limit reminder information, and control the light on the vehicle dashboard to flash red according to the best reminder method, thereby reminding the user to drive within the target speed limit range; for another example, an embodiment of the present application can generate a speed limit reminder information for a vehicle according to the working status of the speed limiter, match the best reminder method according to the speed limit reminder information, and control the vehicle display screen to display the text message "Please pay attention to the current speed!" according to the best reminder method, thereby reminding the user to drive within the target speed limit range.

[0052] The embodiments of the present application can monitor the target speed limit and functional system status in real time, realize working condition classification, working condition jump and working condition execution, and ensure that the user is reminded to drive within the target speed limit according to a combination of one or more reminders, so that the driver does not have to pay attention to speeding all the time while driving, thereby reducing the driver's fatigue and improving the user experience.

[0053] Optionally, in one embodiment of the present application, the method further includes: displaying the activation state of the speed limiter and the target speed limit value of the vehicle on a display screen of the vehicle.

[0054] It can be understood that the speed limiter in the embodiment of the present application has three working states: open, paused and closed, and can jump between different states according to the judgment conditions. The speed limiter open state means that after the speed limit is activated, the VCU performs relevant judgments and controls according to the speed limit target value, and transmits the results to the MCU (Microcontroller Unit), and the MCU drives the response torque speed limit command; the speed limiter pause state means that after the speed limiter working state is activated and displayed, when the accelerator pedal is kept greater than a certain opening threshold, after the VCU judgment, the vehicle MCU amplifies a certain proportion of the speed limit command according to the VCU calculation result data, and performs the speed limit value adjustment after smooth transition. When the accelerator pedal is less than a certain opening value, it continues to smoothly transition to the speed limit command that originally displayed the speed limiter working state; the speed limiter closed state means that when the speed limiter working state and the speed limiter pause state are activated and displayed, the vehicle MCU restores to the original driving state according to the VCU calculation result data after smooth transition, wherein, when the speed limiter is in the open state or the speed limiter is in the pause state, the close button is pressed, and the speed limiter closed state signal is issued.

[0055] During the actual implementation process, the embodiment of the present application can display the opening status of the speed limiter and the target speed limit value of the vehicle on the vehicle's display screen. The display method varies depending on the vehicle configuration. Some models use vehicle lights to prompt, while some models use text, icons, and voice prompts. At the same time, different colors will be used to distinguish when displaying depending on the working status of the speed limiter.

[0056] The embodiment of the present application can display the opening status of the speed limiter and the target speed limit value of the vehicle, thereby giving the driver a prompt, facilitating the driver to make the next driving operation, improving the intelligence and practicality of the vehicle, and enhancing the user experience.

[0057] Specifically, it can be combined Figure 2 As shown, the working principle of the speed limiting method of the electric vehicle in the embodiment of the present application is described in detail with a specific embodiment.

[0058] like Figure 2 As shown, the embodiment of the present application may include the following steps:

[0059] Step S201: Speed ​​limiter switch (voice / button recognition)

[0060] Step S202: Determine whether the speed limiter switch is on, if so, execute step S203; if not, execute step S204.

[0061] Step S203: Speed ​​limiter on state.

[0062] Step S204: Speed ​​limiter closed state.

[0063] Step S205: speed limiter target vehicle speed adjustment module.

[0064] Step S206: Determine whether the actual vehicle speed is less than or equal to the target speed limit, if so, execute step S207; if not, execute step S208.

[0065] Step S207: output limit torque; output vehicle speed=less than or equal to target limit vehicle speed.

[0066] Step S208: Determine whether the throttle opening is greater than a certain opening threshold, if so, execute step S211; if not, execute step S210.

[0067] Step S209: The instrument displays the speed limiter working status and the target speed limit vehicle speed.

[0068] Step S210: Torque limiting control.

[0069] Step S211: Speed ​​limiter pause state.

[0070] Step S212: output actual torque; output vehicle speed = greater than target speed limit vehicle speed.

[0071] According to the speed limit method of an electric vehicle proposed in the embodiment of the present application, when the current speed of the vehicle reaches the target speed limit value, the speed of the vehicle can be limited according to the speed limit torque, thereby effectively controlling the vehicle to maintain the target speed. The embodiment of the present application can adaptively limit the speed under all road conditions, so that the driver does not have to pay attention to speeding when driving, which reduces the driver's fatigue and improves the sense of security of the driver and passengers. Therefore, the problem that the related technology only limits the speed according to the speed limit information, cannot effectively control the speed of the vehicle, affects the user's driving experience, and has low intelligence and practicality is solved.

[0072] Next, the speed limiting device of the electric vehicle proposed in accordance with the embodiment of the present application will be described with reference to the accompanying drawings.

[0073] Figure 3 It is a schematic structural diagram of a speed limiting device for an electric vehicle according to an embodiment of the present application.

[0074] like Figure 3 As shown, the speed limiting device 10 of the electric vehicle includes: a receiving module 100 , a generating module 200 and a speed limiting module 300 .

[0075] Specifically, the receiving module 100 is used to receive the user's voice information or the triggering information of the speed limit button.

[0076] The generating module 200 is used to generate a speed limit instruction of the vehicle according to the voice information or the trigger information, and to start the speed limiter of the vehicle in response to the speed limit instruction, and to obtain a target speed limit value of the vehicle according to the speed limit instruction.

[0077] The speed limit module 300 is used to limit the speed of the vehicle according to the speed limit torque when the current speed of the vehicle reaches the target speed limit value, so as to control the vehicle to maintain running at the target speed.

[0078] Optionally, in one embodiment of the present application, the speed limiter 10 of the electric vehicle further includes: a display module, which is used to display the activation state of the speed limiter and the target speed limit value of the vehicle on a display screen of the vehicle.

[0079] Optionally, in one embodiment of the present application, the speed limiting device 10 of the electric vehicle further includes: a collection module, a limiting module and a control module.

[0080] Among them, the acquisition module is used to collect the accelerator pedal opening of the vehicle before controlling the vehicle to maintain the target speed, and determine whether the accelerator pedal opening is less than or equal to the preset opening threshold.

[0081] The limiting module is used to limit the output torque of the vehicle by using the speed limiter when the accelerator pedal opening is less than or equal to a preset opening threshold, generate the speed limit torque of the vehicle, and limit the speed of the vehicle according to the speed limit torque.

[0082] The control module is used for determining that the speed limiter is in a suspended working state when the accelerator pedal opening is greater than a preset opening threshold, generating the actual torque of the vehicle according to the accelerator pedal opening, and suspending the speed limit of the vehicle according to the actual torque until the vehicle completes the overtaking action, releases the accelerator pedal and the current vehicle speed is restored to the target limit value, and then controlling the speed limiter to continue working to monitor the vehicle speed running state.

[0083] Optionally, in one embodiment of the present application, the generating module 200 includes: an acquiring unit and an adjusting unit.

[0084] The acquisition unit is used to acquire a trigger signal for adjusting the speed limit of the vehicle.

[0085] The adjustment unit is used to obtain an increase or decrease in the target speed limit according to the speed limit adjustment trigger signal to adjust the target speed limit.

[0086] Optionally, in one embodiment of the present application, the speed limiting device 10 of the electric vehicle further includes: an information generating module and a reminding module.

[0087] Among them, the information generation module is used to generate the vehicle's speed limit reminder information according to the working status of the speed limiter after the vehicle's speed is limited.

[0088] The reminder module is used to match the best reminder method according to the speed limit reminder information, and control the vehicle to provide acoustic reminders, optical reminders and / or text speed limit reminders according to the best reminder method.

[0089] It should be noted that the above explanation of the embodiment of the speed limiting method for an electric vehicle is also applicable to the speed limiting device for an electric vehicle in this embodiment, and will not be repeated here.

[0090] According to the speed limit device of the electric vehicle proposed in the embodiment of the present application, when the current speed of the vehicle reaches the target speed limit value, the speed of the vehicle can be limited according to the speed limit torque, thereby effectively controlling the vehicle to maintain the target speed. The embodiment of the present application can adaptively limit the speed under all road conditions, so that the driver does not have to pay attention to speeding when driving, which reduces the driver's fatigue and improves the sense of security of the driver and passengers. Therefore, the problem that the related technology only limits the speed according to the speed limit information, cannot effectively control the speed of the vehicle, affects the user's driving experience, and has low intelligence and practicality is solved.

[0091] Figure 4 A schematic diagram of the structure of a vehicle provided in an embodiment of the present application. The vehicle may include:

[0092] Memory 401 , processor 402 , and a computer program stored in the memory 401 and executable on the processor 402 .

[0093] When the processor 402 executes the program, the speed limiting method for the electric vehicle provided in the above embodiment is implemented.

[0094] Furthermore, the vehicle also includes:

[0095] The communication interface 403 is used for communication between the memory 401 and the processor 402 .

[0096] The memory 401 is used to store computer programs that can be executed on the processor 402 .

[0097] The memory 401 may include a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory.

[0098] If the memory 401, the processor 402 and the communication interface 403 are implemented independently, the communication interface 403, the memory 401 and the processor 402 can be connected to each other through a bus and communicate with each other. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component (PCI) bus or an Extended Industry Standard Architecture (EISA) bus. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 4 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0099] Optionally, in a specific implementation, if the memory 401, the processor 402 and the communication interface 403 are integrated on a chip, the memory 401, the processor 402 and the communication interface 403 can communicate with each other through an internal interface.

[0100] The processor 402 may be a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application.

[0101] This embodiment also provides a computer-readable storage medium, on which a computer program is stored. When the program is executed by a processor, the speed limiting method of the electric vehicle as described above is implemented.

[0102] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or N embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0103] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, "N" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0104] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code comprising one or N executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0105] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purpose of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or N wirings (electronic devices), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), a fiber optic device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically by optically scanning the paper or other medium and then editing, interpreting or processing in other suitable ways as necessary and then storing it in a computer memory.

[0106] It should be understood that the various parts of the present application can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiment, the N steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0107] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0108] In addition, each functional unit in each embodiment of the present application may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0109] The storage medium mentioned above may be a read-only memory, a magnetic disk or an optical disk, etc. Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application. A person of ordinary skill in the art may change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A speed limiting method for an electric vehicle, characterized in that: The following steps are involved: Receive user's voice message or speed limit button trigger information; generating a speed limit instruction for the vehicle according to the voice information or the trigger information, and in response to the speed limit instruction, starting a speed limiter of the vehicle, and obtaining a target speed limit value of the vehicle according to the speed limit instruction; When the current vehicle speed reaches the target speed limit value, the vehicle speed is limited according to the speed limit torque, so as to control the vehicle to maintain running at the target speed.

2. The method according to claim 1, characterized in that Also includes: The activation state of the speed limiter and the target speed limit value of the vehicle are displayed on the display screen of the vehicle.

3. The method according to claim 1, characterized in that Before controlling the vehicle to maintain the target speed, the method further includes: collecting the accelerator pedal opening of the vehicle, and determining whether the accelerator pedal opening is less than or equal to a preset opening threshold; If the accelerator pedal opening is less than or equal to the preset opening threshold, the speed limiter is used to limit the output torque of the vehicle, a speed limit torque of the vehicle is generated, and the speed of the vehicle is limited according to the speed limit torque; If the accelerator pedal opening is greater than the preset opening threshold, it is determined that the speed limiter is in a suspended working state, the actual torque of the vehicle is generated according to the accelerator pedal opening, and the speed limit of the vehicle is suspended according to the actual torque until the vehicle completes the overtaking action, releases the accelerator pedal and the current vehicle speed is restored to the target limit value. The speed limiter continues to work to monitor the vehicle speed running state.

4. The method according to claim 1, characterized in that: The obtaining the target speed limit value of the vehicle according to the speed limit instruction includes: Obtaining a trigger signal for adjusting the speed limit of the vehicle; An increase or decrease in the target speed limit is obtained according to the speed limit adjustment trigger signal to adjust the target speed limit.

5. The method according to claim 1, characterized in that After limiting the speed of the vehicle, the method further includes: generating speed limit reminder information of the vehicle according to the working status of the speed limiter; An optimal reminder method is matched according to the speed limit reminder information, and the vehicle is controlled to perform acoustic reminders, optical reminders and / or text speed limit reminders according to the optimal reminder method.

6. A speed limiting device for an electric vehicle, characterized in that: include: A receiving module, used to receive the user's voice information or the trigger information of the speed limit button; a generating module, configured to generate a speed limit instruction for the vehicle according to the voice information or the trigger information, and to start the speed limiter of the vehicle in response to the speed limit instruction, and to obtain a target speed limit value of the vehicle according to the speed limit instruction; The speed limit module is used to limit the speed of the vehicle according to the speed limit torque when the current speed of the vehicle reaches the target speed limit value, so as to control the vehicle to maintain running at the target speed.

7. The device according to claim 6, characterized in that Also includes: The display module is used to display the activation state of the speed limiter and the target speed limit value of the vehicle on a display screen of the vehicle.

8. The device according to claim 6, characterized in that Also includes: A collection module, used for collecting the accelerator pedal opening of the vehicle before controlling the vehicle to maintain the target vehicle speed, and determining whether the accelerator pedal opening is less than or equal to a preset opening threshold; a limiting module, configured to limit the output torque of the vehicle by using the speed limiter when the accelerator pedal opening is less than or equal to the preset opening threshold, generate a speed limit torque of the vehicle, and limit the speed of the vehicle according to the speed limit torque; a control module, configured to determine that the speed limiter is in a suspended working state when the accelerator pedal opening is greater than the preset opening threshold, generate the actual torque of the vehicle according to the accelerator pedal opening, and suspend the speed limit of the vehicle according to the actual torque until the vehicle completes the overtaking action, releases the accelerator pedal and the current vehicle speed is restored to the target limit value, and then control the speed limiter to continue working, so as to monitor the vehicle speed running state.

9. A vehicle, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the speed limiting method for an electric vehicle as claimed in any one of claims 1 to 5.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: The program is executed by a processor to implement the speed limiting method for an electric vehicle as described in any one of claims 1 to 5.

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