Control method and device for vehicle race track mode, vehicle and storage medium

Abstract

The present application relates to the field of vehicle control, and discloses a vehicle race track mode control method, device, vehicle and storage medium, the vehicle race track mode control method comprises the following steps: after receiving the activation signal of the race track mode, if the current state of the vehicle meets the race track mode activation condition, the vehicle enters the race track mode; after the vehicle enters the race track mode, torque control is performed on the vehicle according to a torque strategy and battery power control is performed on the vehicle according to a battery power strategy; after the race track mode is activated, the maximum power output of the electric drive is comprehensively improved through torque control, thermal management, battery management, vehicle body control and the like, the best race track mode experience of the user is met in intense driving, the maximum power consumption of the air conditioner is limited, the maximum performance of the electric drive and the battery heat dissipation is improved, and the best heat dissipation effect is ensured, so that the driving power demand is maximized.

Description

Technical Field

[0001] This invention relates to the field of vehicle control, specifically to a method, apparatus, vehicle, and storage medium for controlling a vehicle track mode. Background Technology

[0002] In existing electric vehicles, some electric vehicles have driving modes related to sport or track modes for users to set and experience. However, after these sport or track modes are activated, there is a lack of systematic strategy combination control methods, which makes the whole vehicle remain in the performance output state before activation after the sport or track mode is activated, and the vehicle's performance changes slowly. Summary of the Invention

[0003] This invention provides a method, device, vehicle, and storage medium for controlling a vehicle's track mode, enabling the vehicle's battery temperature and drive motor torque output to be quickly controlled to an optimal state after entering track mode, thus solving the problem of slow performance response in traditional vehicles after activating track mode.

[0004] In a first aspect, the present invention provides a method for controlling a vehicle track mode, including...

[0005] Upon receiving the activation signal for track mode, if the vehicle's current state meets the activation conditions for track mode, the vehicle will enter track mode.

[0006] After the vehicle enters track mode, torque control is performed on the vehicle according to the torque strategy and battery power control is performed on the vehicle according to the battery power strategy.

[0007] Specifically, torque control of the vehicle based on the torque strategy includes: acquiring the current pedal opening and the current vehicle speed, and performing torque control of the vehicle based on the current pedal opening and the current vehicle speed; battery power control of the vehicle based on the battery power strategy includes: acquiring the current battery temperature and the current available battery charge, and determining the battery output power based on the current battery temperature and the current available battery charge.

[0008] By employing the aforementioned methods, the vehicle's power battery temperature can be quickly adjusted to a suitable level after activating track mode, and the torque output can be at the strongest driving capability value of the drive motor, rapidly changing the vehicle's performance and solving the problem of slow performance response in traditional vehicles after activating track mode.

[0009] Optionally, the current pedal opening includes the current accelerator pedal opening and the current brake pedal opening, and the torque control of the vehicle based on the current pedal opening and the current vehicle speed includes:

[0010] If the current vehicle speed is 0, then a first target torque is determined based on the current accelerator pedal opening, the current brake pedal opening, and a first torque mapping relationship, wherein the first torque mapping relationship is used to indicate the mapping relationship between the current accelerator pedal opening, the current brake pedal opening, and the first target torque.

[0011] Optionally, the torque control of the vehicle based on the current pedal opening and the current vehicle speed includes:

[0012] If the current vehicle speed is not 0, then the second target torque is determined according to the current accelerator pedal opening, the current vehicle speed and the second torque mapping relationship, wherein the second torque mapping relationship is used to indicate the mapping relationship between the current accelerator pedal opening, the current vehicle speed and the second target torque.

[0013] Optionally, the torque control of the vehicle based on the torque strategy further includes:

[0014] When the accelerator pedal and brake pedal are pressed simultaneously, the duration of the simultaneous pressing of the accelerator pedal and brake pedal is obtained, a torque limiting coefficient is determined based on the duration of simultaneous pressing, and the current torque is updated based on the torque limiting coefficient.

[0015] Optionally, the torque control of the vehicle according to the torque strategy further includes: obtaining the required torque and the actual output torque, and determining the difference between the required torque and the actual output torque; determining the torque gradient parameter based on the difference, and updating the actual output torque based on the difference and the torque gradient parameter.

[0016] The step of determining the battery output power based on the current battery temperature and the current available battery power includes:

[0017] Obtain the battery's historical temperature, historical available battery capacity, and historical maximum available battery power, and establish a power mapping table based on the battery's historical temperature, historical available battery capacity, and historical maximum available battery power;

[0018] The battery output power is obtained based on the battery's current temperature, the battery's current available power, and the power mapping table.

[0019] Optionally, after receiving the track mode activation signal, if the vehicle's current state meets the track mode activation conditions, then after the vehicle enters track mode, the following steps are further included:

[0020] Thermal management control of the vehicle is implemented according to the thermal management strategy;

[0021] The thermal management control based on the thermal management strategy includes: obtaining the three-phase temperature of the motor, the motor winding temperature, the DC-DC water temperature, and the minimum speed of the electric drive circuit water pump in the track mode in the electric drive circuit corresponding to the thermal management system, and determining the speed of the electric drive circuit water pump based on the three-phase temperature of the motor, the motor winding temperature, the DC-DC water temperature, and the minimum speed.

[0022] Secondly, the present invention provides a control device for a vehicle track mode, including...

[0023] The activation module, upon receiving the track mode activation signal, activates the vehicle and, if the vehicle's current state meets the track mode activation conditions, then the vehicle enters track mode; and

[0024] The control module is used to control the torque of the vehicle according to the torque strategy and the battery power of the vehicle according to the battery power strategy after the vehicle enters the track mode.

[0025] The control module includes:

[0026] The torque control module is used to acquire the current pedal opening and the current vehicle speed, and to control the torque of the vehicle based on the current pedal opening and the current vehicle speed.

[0027] The battery power control module is used to acquire the current battery temperature and the current available battery power, and determine the battery output power based on the current battery temperature and the current available battery power.

[0028] Thirdly, the present invention provides a vehicle including an electronic device for executing the above-described vehicle track mode control method.

[0029] Fourthly, the present invention provides a computer-readable storage medium having a computer program stored thereon, which is executed by a processor to implement the vehicle track mode control method described above.

[0030] The present invention has the following advantages:

[0031] This invention comprehensively enhances the maximum power output of the electric drive in track mode through torque control, thermal management, battery management, and body control, satisfying users' optimal track mode experience for intense driving; it also limits the maximum power consumption of the air conditioner, improves the maximum heat dissipation performance of the electric drive and battery, and ensures the best heat dissipation effect to maximize the driving power demand; and solves the problem of slow performance response of traditional vehicles after activating track mode. Attached Figure Description

[0032] Figure 1 This is a flowchart illustrating the vehicle track mode control method provided by the present invention;

[0033] Figure 2 This is a diagram illustrating the torque response time;

[0034] Figure 3 It is a graph showing the relationship between accelerator pedal opening and closing degree and different vehicle speeds;

[0035] Figure 4 This is a schematic structural block diagram of the vehicle track mode control device provided by the present invention. Detailed Implementation

[0036] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0037] In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0038] The following description, with reference to the accompanying drawings, outlines a vehicle track mode control method, apparatus, vehicle, and storage medium according to embodiments of this application. As mentioned in the background section, while some electric vehicles offer driving modes related to sport or track modes for users to set and experience, these modes lack a systematic strategy combination control method after activation. This results in the vehicle remaining in its pre-activation performance output state after activating the sport or track mode, with slow performance response. To address this problem, this invention provides a vehicle track mode control method that comprehensively enhances the maximum power output of the electric drive through torque control, thermal management, battery management, and body control in track mode, thereby satisfying the user's optimal track mode experience for spirited driving.

[0039] Specifically, embodiments of this application provide a control method for a vehicle track mode. Figure 1 This is a flowchart illustrating the vehicle track mode control method provided by the present invention, as shown below. Figure 1 As shown, the control method for the vehicle track mode includes:

[0040] In step S100, after receiving the track mode activation signal, if the current state of the vehicle meets the track mode activation conditions, the vehicle enters track mode.

[0041] In one embodiment, the activation signal for the track mode can be issued by the user. The activation can be via voice interaction or through the central control screen. When the user issues the activation signal, the vehicle can be in park (P) gear. After activating track mode, switching to drive allows the vehicle to proceed. The track mode can also be activated while the vehicle is in motion. Specifically, the user can set the track mode activation conditions according to actual needs. These conditions may include battery charge, battery temperature, voltage, and gear position. For example, if the vehicle is currently in P gear, under high voltage, and meets the requirements of battery charge ≥70% and battery temperature ≥10℃, then the vehicle's current state meets the track mode activation conditions. If the vehicle's current state does not meet the track mode activation conditions, the current mode is maintained, and a message indicating unsuccessful activation can be issued. In one embodiment, after the activation signal is issued, the vehicle controller pushes a "OK" signal to the central control screen indicating whether to activate the track mode. When the user clicks "OK," the vehicle controller receives the activation signal.

[0042] During implementation, when the user clicks "OK", if the vehicle's current state meets the conditions for activating track mode, the vehicle controller (VCU) will send a "track mode ON" message to the central control screen (IVI), and the vehicle will enter track mode ON. If the user clicks "Cancel", the current mode will remain unchanged. If the vehicle's current state does not meet the conditions for activating track mode, the vehicle controller (VCU) will send a "track mode OFF" message to the central control screen (IVI), and the central control screen (IVI) will display a pop-up message reminding the user of the specific reason for the failure to enter track mode.

[0043] Once the vehicle enters track mode, the air conditioning output power will be limited, and a notification will be displayed indicating this limitation. Additionally, upon entering track mode, a battery level warning will be generated based on the battery's charge level. This warning can be customized; for example, if the battery level (set threshold) is ≤30%, a voice prompt will remind the user that performance is declining due to low battery and ask if they wish to exit track mode. The vehicle may also advise the user to drive cautiously. Furthermore, for optimal performance, the vehicle may suggest fully charging the battery and setting the battery temperature to the target level. Finally, the vehicle may warn that rapid acceleration in track mode will significantly increase energy consumption. By providing these notifications upon entering track mode, the vehicle proactively alerts the user when activating the mode, enhancing the interactive control experience and ensuring the user is promptly informed of the vehicle's current status and the precautions to take when entering track mode.

[0044] Figure 2This is a torque response time diagram. The diagram shows the torque values ​​and response times calibrated in track mode with and without regenerative braking. As the diagram shows, with regenerative braking, the torque response time when the torque crosses zero is longer compared to without it. Therefore, after entering track mode, the regenerative braking mode can be turned off, setting both coasting and braking regenerative braking to 0 at all speeds. This reduces the torque response time when the torque crosses zero, improving the vehicle's performance feedback after entering track mode.

[0045] In step S200, after the vehicle enters the track mode, torque control is performed on the vehicle according to a torque strategy, and battery power control is performed on the vehicle according to a battery power strategy. Torque control according to the torque strategy includes: acquiring the current pedal opening and the current vehicle speed, and performing torque control based on the current pedal opening and the current vehicle speed, where the current pedal opening includes the current accelerator pedal opening and the current brake pedal opening. Battery power control based on the battery power strategy includes: acquiring the current battery temperature and the current available battery charge, and determining the battery output power based on the current battery temperature and the current available battery charge. In some embodiments, the current pedal opening includes the current accelerator pedal opening and the current brake pedal opening. Torque control based on the current pedal opening and the current vehicle speed includes: if the current vehicle speed is 0, determining a first target torque based on the current accelerator pedal opening P1, the current brake pedal opening P2, and a first torque mapping relationship, and using the first target torque to control vehicle movement; wherein the first torque mapping relationship indicates the mapping relationship between the current accelerator pedal opening, the current brake pedal opening, and the first target torque. The mapping relationship between the current accelerator pedal opening, the current brake pedal opening, and the first target torque can be obtained based on actual vehicle test calibration. Specifically, when P1 = 100%,

[0046] P2 = 100%, the first target torque is close to the motor's strongest driving capability value N. max When P1 remains constant at 100%, and P2 decreases from 100% to 0%, the first target torque N1 = N. max N max Related to motor performance, for the same motor performance, there is a unique N when determining the accelerator pedal and brake pedal. max When the vehicle speed is 0 and the accelerator pedal opening is 0, the initial target torque is 0. The maximum driving capability value N of the electric motor. max The characteristics of the motor itself are determined by the signal input from the MCU controller.

[0047] In one embodiment, torque control of the vehicle according to the torque strategy further includes: when the accelerator pedal and brake pedal are pressed simultaneously, obtaining the duration of simultaneous pressing of the accelerator pedal and brake pedal, determining a torque limit coefficient based on the duration of simultaneous pressing, and updating the current torque based on the torque limit coefficient. By determining the torque limit coefficient based on the duration of simultaneous pressing and updating the current torque based on the torque limit coefficient, timeout protection is achieved when both pedals are pressed simultaneously, avoiding the problem of engine damage to motor components due to prolonged high torque operation. The upper limit of the time for simultaneous pressing of the brake and accelerator pedals is determined based on actual vehicle testing; and based on the actual vehicle test results, the torque limit value of the motor is limited by the longest allowable time. The torque limit coefficient is determined based on the duration of simultaneous pressing; the longer the duration of simultaneous pressing, the larger the torque limit coefficient, which is greater than 0 and less than 1. Specifically, when the duration t of simultaneous pressing of the brake and accelerator pedals exceeds 3 seconds, the current torque N is reduced. 当前 The torque limiting factor is based on the time the pedal is depressed: 3 < t < 10, torque limiting factor K = 0.5; t > 10, K = 0.3; the actual output torque value is N. 当前 The product of K. When the duration of simultaneous pressing exceeds the preset threshold for simultaneous pressing duration, an overtime protection prompt signal can be sent to the large screen to indicate "Simultaneous pressing of both pedals for too long, entering overtime protection".

[0048] In one embodiment, torque control of the vehicle based on the current accelerator pedal opening and the current vehicle speed includes: if the current vehicle speed is not zero, determining a second target torque based on the current accelerator pedal opening, the current vehicle speed, and a second torque mapping relationship, wherein the second torque mapping relationship indicates the mapping relationship between the current accelerator pedal opening, the current vehicle speed, and the second target torque. Specifically, in real-vehicle testing, the corresponding second target torque can be specified based on the accelerator pedal signal and vehicle speed during driving, establishing a second torque mapping relationship, which includes a graph showing the relationship between accelerator pedal opening and different vehicle speeds; for example... Figure 3 As shown, the relationship between accelerator pedal opening and closing degree and different vehicle speeds can also be obtained by fitting the corresponding second target torque according to the accelerator pedal signal and vehicle speed.

[0049] In one embodiment, specifying the corresponding second target torque based on the accelerator pedal signal and vehicle speed, and establishing the second torque mapping relationship further includes: setting according to vehicle speed and accelerator pedal opening, where vehicle speed V ranges from 0-300 km / h and accelerator pedal opening P1 ranges from 0-100%. The maximum second target torque is the motor's strongest driving capability N. max The second target torque is linearly reduced as vehicle speed increases and accelerator pedal opening decreases.

[0050] In one embodiment, torque control of the vehicle according to the torque strategy further includes: acquiring the required torque and the actual output torque, and determining the difference between the required torque and the actual output torque; determining a torque gradient parameter based on the difference, and updating the actual output torque based on the difference and the torque gradient parameter.

[0051] The torque gradient parameter for track mode is set using the following formula:

[0052] N = Min[(N1-N)] 1 / z ),M*T]+N 1 / z

[0053] Where: T is the step time; N is the actual output torque value; N1 is the required torque value; M is the gradient parameter value; N 1 / z The value is the actual torque value at the previous moment; the gradient parameter value M is the difference ΔN between the set reference torque value N1 and the actual torque value N. The larger the difference ΔN, the larger the gradient parameter value M, with a maximum of 30000. At the same time, in order to ensure the acceleration torque response requirements, the minimum gradient parameter value can be 20000.

[0054] In some embodiments, determining the battery output power based on the current battery temperature and the current available battery capacity includes: obtaining the battery's historical temperature, historical available battery capacity, and historical maximum available battery power; establishing a power mapping table based on the historical battery temperature, historical available battery capacity, and historical maximum available battery power; and obtaining the battery output power based on the current battery temperature, current available battery capacity, and the power mapping table.

[0055] The current available battery capacity can be obtained from the battery capacity, battery temperature, and a capacity mapping table. The capacity mapping table indicates the relationship between battery capacity, available battery capacity, and battery temperature. Please refer to Table 1 for the capacity mapping table. As shown in Table 1, when the battery temperature is -30℃ and the battery's available capacity (SOC) is 100%, the available discharge capacity (SOE) is 57.37%. Obtain the battery's historical temperature, historical battery capacity, and historical available battery capacity, and establish a capacity mapping table based on these data.

[0056] Table 1: Battery Discharge Capacity (SOE) (Percentage) - Battery Capacity Mapping Table

[0057]

[0058] The above-mentioned technical means are used to achieve the maximum available power of the battery in the output track mode, so as to meet the electric drive power requirements to the greatest extent.

[0059] In some embodiments, after receiving the track mode activation signal, if the vehicle's current state meets the track mode activation conditions, then after the vehicle enters track mode, the process further includes:

[0060] Thermal management control of the vehicle is implemented according to the thermal management strategy;

[0061] The thermal management control based on the thermal management strategy includes: obtaining the three-phase temperature of the motor, the motor winding temperature, the DC-DC water temperature, and the minimum speed of the electric drive circuit water pump in the track mode in the electric drive circuit corresponding to the thermal management system, and determining the speed of the electric drive circuit water pump based on the three-phase temperature of the motor, the motor winding temperature, the DC-DC water temperature, and the minimum speed.

[0062] For example, the adjustment method of the thermal management control implements the following strategy:

[0063] Thermal management strategy a) Close the active air intake grille (AGS) and limit the maximum power of the air conditioning thermal management to ≤2kW;

[0064] Thermal management strategy b: During this driving cycle, upon first entering track mode, if the battery temperature is <20℃, the battery will be rapidly heated to 20℃. If the battery temperature is >20℃, the battery cooling level will be set to L3 until the temperature drops to 20℃. Subsequently, when the battery temperature is between 28 and 35℃, the battery cooling level will be adjusted to L2. When the battery temperature is ≥36℃, the battery cooling level will be adjusted to L3 to maintain the battery temperature between 20 and 40℃, ensuring that the battery is in the optimal discharge temperature range. The higher the battery cooling level, the greater the cooling power.

[0065] Thermal control strategy c: Enhanced cooling of the electric drive circuit. Based on the water temperature and component temperatures of the electric drive circuit, the water pump speed is calculated to ensure that the components of the electric drive circuit do not overheat. The water pump control logic of the electric drive circuit is as follows:

[0066] MAX(K) speed of the electric drive circuit water pump 三相 *T 三相 K 绕组 *T 绕组 K DCDC *T DCDC D);

[0067] Where: K 三相 To determine the coefficient for the water pump in the electric drive circuit of the three-phase temperature control motor, such as 0.5, establish a table of three-phase temperature and speed of the motor, and obtain K by looking up the table. 三相 Value; T 三相 The three-phase temperature of the motor; K 绕组 To control the water pump coefficient in the electric drive circuit for motor winding temperature, such as 0.8, a table of motor winding temperature and speed is created. K is then obtained by looking up the table.绕组 Value; T 绕组 Temperature of the motor windings; K DCDC To determine the coefficient of the electric drive circuit pump for DC-DC water temperature control, such as 1.3, establish a table of DC-DC water temperature and speed, and obtain K by looking up the table. DCDC Value; T DCDC This refers to the DC-DC water temperature; D represents the minimum speed of the electric drive circuit water pump in track mode, such as 40%.

[0068] In some preferred embodiments, the torque control and thermal management control are implemented in parallel.

[0069] The vehicle body control adjustment method is as follows: After the vehicle enters track mode, the vehicle's chassis controller ESC adjusts the vehicle body posture and reduces the ground clearance to the minimum.

[0070] The vehicle theme style, vehicle sound, windows and rear spoiler adjustment methods are as follows: After the vehicle enters track mode, the background effect of the vehicle instrument panel and central control screen will switch to the theme style of track mode, the vehicle sound effect will change with the vehicle speed, the four doors of the vehicle will close and the rear spoiler will rise.

[0071] In one embodiment, after entering the track mode, the real-time battery level of the vehicle can also be obtained. When the battery level is less than or equal to a first set threshold, a vehicle performance degradation information is issued. For example, when the vehicle's battery level is ≤30%, a voice prompt is given to remind the user that the battery level is low and the performance is degraded, and asks whether to exit the track mode.

[0072] In one embodiment, upon receiving a track mode exit command, if the command meets preset conditions, an exit prompt is issued, and the vehicle exits track mode. The exit command is issued by the user based on driving needs or based on real-time vehicle conditions, for example:

[0073] Scenario 1: When the user actively clicks "Exit" on the central control screen, the vehicle controller receives the track mode exit request from the central control screen, and the vehicle exits track mode and sends a message to the central control screen that track mode has been turned off.

[0074] Scenario 2: When the vehicle's battery level is ≤30%, the voice prompt will remind the user that the battery level is low and the performance is declining. The user will ask if they want to exit track mode. If the answer is yes, the central control screen will send a message to the vehicle controller to turn off track mode after 10 seconds. The vehicle controller VCU will then send a message to the central control screen IVI to indicate that track mode is off. If the answer is no, track mode will remain on.

[0075] The vehicle track mode control method provided in this embodiment comprehensively enhances the maximum power output of the electric drive through torque control, thermal management, battery management, and body control in track mode, satisfying the user's optimal track mode experience for intense driving; it also limits the maximum power consumption of the air conditioner, improves the maximum heat dissipation performance of the electric drive and battery, and ensures the best heat dissipation effect to maximize the driving power demand; it solves the problem of slow performance response of traditional vehicles after activating track mode.

[0076] The embodiments of the present invention also provide a control device for a vehicle track mode, such as... Figure 4 As shown, the control device includes:

[0077] Activation module 100, upon receiving the track mode activation signal, if the vehicle's current state meets the track mode activation conditions, then the vehicle enters track mode; and

[0078] The control module 200 is used to control the torque of the vehicle according to the torque strategy and control the battery power of the vehicle according to the battery power strategy after the vehicle enters the track mode.

[0079] The control module 200 includes:

[0080] The torque control module 210 is used to acquire the current pedal opening and the current vehicle speed, and to perform torque control on the vehicle based on the current pedal opening and the current vehicle speed.

[0081] The battery power control module 220 is used to acquire the current battery temperature and the current available battery power, and determine the battery output power based on the current battery temperature and the current available battery power.

[0082] In some embodiments, the control device for the vehicle track mode further includes a thermal management control module 230, which is used to obtain the three-phase temperature of the motor, the motor winding temperature, the DC-DC water temperature and the minimum speed of the electric drive circuit water pump in the track mode in the electric drive circuit corresponding to the thermal management system, and to determine the speed of the electric drive circuit water pump based on the three-phase temperature of the motor, the motor winding temperature, the DC-DC water temperature and the minimum speed.

[0083] The vehicle track mode control device enables the vehicle's battery temperature and drive motor torque output to be quickly controlled to the optimal state after entering track mode, thus solving the problem of slow performance response of traditional vehicles after activating track mode.

[0084] Through the foregoing detailed description of the vehicle track mode control method, those skilled in the art can clearly understand the vehicle track mode control method, device, vehicle, and storage medium in this embodiment. As for the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and relevant parts can be referred to the method section.

[0085] For specific embodiments of the control device for the vehicle track mode, please refer to the embodiments of the control method for the vehicle track mode described above, which will not be repeated here.

[0086] This application also provides a vehicle, including an electronic device, which is used to execute the control method for the vehicle's track mode. After activating track mode, the vehicle comprehensively enhances the maximum power output of the electric drive through torque control, thermal management, battery management, and body control to provide the best track mode experience for aggressive driving; it also limits the maximum power consumption of the air conditioning, improves the maximum heat dissipation performance of the electric drive and battery, and ensures optimal heat dissipation to maximize the driving power demand; thus solving the problem of slow performance response in traditional vehicles after activating track mode.

[0087] It should be noted that in the above embodiments, the descriptions of each embodiment have their own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0088] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-readable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-readable program code.

[0089] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create a machine for implementing the flowchart illustrations. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0090] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0091] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0092] This application also provides a computer-readable storage medium storing a computer program thereon, characterized in that the program is executed by a processor to implement the above-described vehicle track mode control method.

[0093] If the control device / terminal equipment for the vehicle track mode, when integrated into a module / unit, is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments can also be implemented by a computer program instructing related hardware. This computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above.

[0094] The computer program includes computer program code, which can be in the form of source code, object code, executable file, or some intermediate form. The computer-readable medium can include: any entity or device capable of carrying the computer program code, recording media, USB flash drive, portable hard drive, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signals, telecommunication signals, and software distribution media, etc. It should be noted that the content included in the computer-readable medium can be appropriately added or removed according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable media do not include electrical carrier signals and telecommunication signals.

[0095] In the several embodiments provided in this application, it should be understood that the disclosed devices, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection of devices or units may be electrical, mechanical, or other forms.

[0096] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0097] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0098] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this application. The above embodiments are only used to illustrate the technical solution of this application and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of this application.

[0099] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A control method for a vehicle track mode, characterized in that, include: Upon receiving the activation signal for track mode, if the vehicle's current state meets the activation conditions for track mode, the vehicle will enter track mode. Once the vehicle enters track mode, the energy recovery mode is turned off, and torque control is applied to the vehicle based on the torque strategy, while battery power control is applied to the vehicle based on the battery power strategy. The torque control of the vehicle according to the torque strategy includes: obtaining the current pedal opening and the current vehicle speed, and performing torque control of the vehicle according to the current pedal opening and the current vehicle speed; the battery power control of the vehicle according to the battery power strategy includes: obtaining the current battery temperature and the current available battery power, and determining the battery output power according to the current battery temperature and the current available battery power. After the vehicle enters track mode, it also includes thermal management control of the vehicle according to the thermal management strategy. The thermal management control of the vehicle according to the thermal management strategy includes: turning off the active grille shutter (AGS) and limiting the maximum power of the air conditioning thermal management to no more than a preset power threshold; adjusting the battery cooling level according to the current battery temperature to maintain the battery temperature within a preset temperature range; and determining the electric drive circuit water pump speed according to the electric drive circuit water temperature and the temperature of the electric drive circuit components to ensure that the components of the electric drive circuit do not overheat. The torque control and thermal management control are implemented in parallel.

2. The vehicle track mode control method according to claim 1, characterized in that, The current pedal opening includes the current accelerator pedal opening and the current brake pedal opening, and the torque control of the vehicle based on the current pedal opening and the current vehicle speed includes: If the current vehicle speed is 0, then a first target torque is determined based on the current accelerator pedal opening, the current brake pedal opening, and a first torque mapping relationship, wherein the first torque mapping relationship is used to indicate the mapping relationship between the current accelerator pedal opening, the current brake pedal opening, and the first target torque.

3. The vehicle track mode control method according to claim 2, characterized in that, The torque control of the vehicle based on the current pedal opening and the current vehicle speed includes: If the current vehicle speed is not 0, then the second target torque is determined according to the current accelerator pedal opening, the current vehicle speed and the second torque mapping relationship, wherein the second torque mapping relationship is used to indicate the mapping relationship between the current accelerator pedal opening, the current vehicle speed and the second target torque.

4. The vehicle track mode control method according to claim 1, characterized in that, The torque control of the vehicle based on the torque strategy also includes: When the accelerator pedal and brake pedal are pressed simultaneously, the duration of the simultaneous pressing of the accelerator pedal and brake pedal is obtained, a torque limiting coefficient is determined based on the duration of simultaneous pressing, and the current torque is updated based on the torque limiting coefficient.

5. The vehicle track mode control method according to claim 1, characterized in that, The torque control of the vehicle based on the torque strategy further includes: obtaining the required torque and the actual output torque, and determining the difference between the required torque and the actual output torque; determining the torque gradient parameter based on the difference, and updating the actual output torque based on the difference and the torque gradient parameter.

6. The vehicle track mode control method according to claim 1, characterized in that, The step of determining the battery output power based on the current battery temperature and the current available battery power includes: Obtain the battery's historical temperature, historical available battery capacity, and historical maximum available battery power, and establish a power mapping table based on the battery's historical temperature, historical available battery capacity, and historical maximum available battery power; The battery output power is obtained based on the battery's current temperature, the battery's current available power, and the power mapping table.

7. The vehicle track mode control method according to claim 1, characterized in that, The step of determining the electric drive circuit water pump speed based on the electric drive circuit water temperature and the electric drive circuit component temperature to ensure that the electric drive circuit components do not overheat includes: obtaining the motor three-phase temperature, motor winding temperature, DC-DC water temperature and the minimum speed of the electric drive circuit water pump in the track mode in the electric drive circuit corresponding to the thermal management system, and determining the electric drive circuit water pump speed based on the motor three-phase temperature, the motor winding temperature, the DC-DC water temperature and the minimum speed.

8. A control device for a vehicle track mode, characterized in that, include: The activation module is used to enter track mode if the vehicle's current state meets the activation conditions after receiving the track mode activation signal. and The control module is used to turn off the energy recovery mode after the vehicle enters the track mode, and to control the torque of the vehicle according to the torque strategy and the battery power of the vehicle according to the battery power strategy. The control module includes: The torque control module is used to acquire the current pedal opening and the current vehicle speed, and to control the torque of the vehicle based on the current pedal opening and the current vehicle speed. The battery power control module is used to acquire the current battery temperature and the current available battery power, and determine the battery output power based on the current battery temperature and the current available battery power; The control device further includes: The thermal management control module is used to perform thermal management control on the vehicle according to the thermal management strategy after the vehicle enters the track mode. The thermal management control of the vehicle according to the thermal management strategy includes: turning off the active grille shutter (AGS) and limiting the maximum power of the air conditioning thermal management to not exceed a preset power threshold; adjusting the battery cooling level according to the current battery temperature to maintain the battery temperature within a preset temperature range; and determining the electric drive circuit water pump speed according to the electric drive circuit water temperature and the temperature of the electric drive circuit components to ensure that the components of the electric drive circuit do not overheat. The torque control and thermal management control are implemented in parallel.

9. A vehicle, characterized in that... It includes an electronic device for performing the control method of the vehicle track mode according to any one of claims 1-7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, The program is executed by the processor to implement the vehicle track mode control method as described in any one of claims 1-7.

Images