Vehicle driving method, vehicle, and computer-readable storage medium

Abstract

The present application relates to the field of automobile technology, and in particular to a vehicle driving method, a vehicle, and a computer-readable storage medium. The vehicle driving method includes: obtaining a power switching instruction, switching the driving mode of the vehicle to a target driving mode indicated by the power switching instruction; wherein the target driving mode is one of the preset driving modes of the vehicle; the preset driving mode includes a normal mode, a plurality of first modes, and / or a plurality of second modes, the driving power of the first mode is higher than the driving power of the normal mode, and the driving power of the second mode is lower than the driving power of the normal mode; in response to obtaining a power change request for carrying power demand, the vehicle is controlled to respond to the power demand according to the power response rule of the target driving mode. The use of this method can enrich the driving mode of the vehicle under driving state, which is conducive to optimizing the refinement of the power response efficiency strategy of the vehicle driving mode.

Description

Technical Field

[0001] The present application relates to the field of automobile technology, and in particular to a vehicle driving method, a vehicle, and a computer-readable storage medium. Background Art

[0002] The vehicle's driving modes generally include energy-saving mode, normal mode, and sports mode. The normal mode is also called the normal mode, which has the characteristics of balancing driving power and fuel economy. The driving power of the energy-saving mode is lower than that of the normal mode, and it focuses on economy and fuel saving compared to the normal mode. The driving power of the sports mode is higher than that of the normal mode, and it focuses on driving power compared to the normal mode.

[0003] In the related art, even when developing the driving mode of a vehicle, special modes are usually developed around driving scenarios such as mountains and snow, rather than developing driving modes for the vehicle during normal driving. It can be seen that the current driving modes of vehicles are relatively scarce, and generally there is only a single high driving power mode or a low driving power mode, which cannot well adapt to the driving needs of users. Summary of the invention

[0004] Based on this, it is necessary to provide a vehicle driving method, a vehicle and a computer-readable storage medium that can enrich the driving mode under the vehicle driving state and help optimize the refinement of the power response efficiency strategy of the vehicle driving mode in order to address the above technical problems.

[0005] On the one hand, a vehicle driving method is provided, which includes: obtaining a power switching instruction, and switching the driving mode of the vehicle to a target driving mode indicated by the power switching instruction; wherein the target driving mode is one of the preset driving modes of the vehicle; the preset driving modes include a normal mode, multiple first modes and / or multiple second modes, the driving power of the first mode is higher than the driving power of the normal mode, and the driving power of the second mode is lower than the driving power of the normal mode; in response to obtaining a power change request for carrying power demand, controlling the vehicle to respond to the power demand according to the power response rule of the target driving mode.

[0006] In one embodiment of the present application, the preset driving mode includes multiple first modes, the multiple first modes include a motion mode and a launch mode, and the power response efficiency of the launch mode is higher than the power response efficiency of the motion mode; obtaining a power switching instruction, and switching the driving mode of the vehicle to the target driving mode indicated by the power switching instruction includes: obtaining a launch instruction, and switching the driving mode of the vehicle to the launch mode; in response to obtaining a power change request that carries power demand, controlling the vehicle to respond to the power demand according to the power response rule of the target driving mode includes: in response to an acceleration request in the launch mode, evaluating a torque that matches the acceleration request of the vehicle and is not higher than the vehicle torque limit as the output torque.

[0007] In one embodiment of the present application, evaluating the torque that matches the vehicle's acceleration request and is not higher than the vehicle's torque extreme value as the output torque includes: obtaining an initial required torque that matches the vehicle's acceleration request; amplifying the initial required torque to obtain an amplified torque that is not lower than the initial required torque; comparing the amplified torque with the vehicle's torque extreme value and taking the smaller one as the output torque of the entire vehicle.

[0008] In one embodiment of the present application, the initial required torque is amplified to obtain an amplified torque that is not less than the initial required torque, including: obtaining the vehicle speed and the previous output torque; analyzing the torque gradient that matches the vehicle speed and the previous output torque; obtaining multiple preparatory increases, taking the maximum of the multiple preparatory increases and superimposing it with the previous output torque to form an amplified torque; wherein the multiple preparatory increases include at least a first preparatory increase and a second preparatory increase, the first preparatory increase being the difference between the initial required torque and the previous output torque, and the second preparatory increase being the torque obtained by weighting the torque gradient using the data period.

[0009] In one embodiment of the present application, the vehicle torque extreme values ​​include a first torque extreme value, a second torque extreme value, and a third torque extreme value; comparing the amplification torque with the vehicle torque extreme value and taking the smaller one as the output torque of the whole vehicle includes: obtaining the first torque extreme value, the second torque extreme value, and the third torque extreme value; wherein the first torque extreme value is associated with the current temperature of the drive motor, the second torque extreme value is associated with the current speed of the drive motor, and the third torque extreme value is associated with the vehicle state; taking the smallest of the amplification torque, the first torque extreme value, the second torque extreme value, and the third torque extreme value as the output torque of the whole vehicle.

[0010] In one embodiment of the present application, before switching the driving mode of the vehicle to the ejection mode, the process includes: obtaining vehicle information; determining whether the vehicle information meets the prerequisites for starting the ejection mode; and in response to meeting the prerequisites for starting the ejection mode, allowing the driving mode to be switched to the ejection mode.

[0011] In one embodiment of the present application, the prerequisites include: the vehicle's power reserve is higher than a reserve threshold, the tire pressures of multiple tires are balanced, the vehicle is in normal condition, there are no obstacles in the global environment within a preset distance from the vehicle body, and whether the number of times the ejection mode is activated in the current vehicle driving cycle is less than a number threshold.

[0012] In one embodiment of the present application, switching the vehicle's driving mode to the launch mode includes: obtaining the state of charge of the vehicle's driving battery; analyzing the power generation power of the range extender that matches the state of charge; wherein the state of charge is inversely proportional to the power generation power of the range extender; adding the power generation power of the power motor to the power generation power of the range extender to obtain a torque converted as the power source of the vehicle; wherein the power motor is powered by the driving battery.

[0013] In one embodiment of the present application, the vehicle driving method further includes: identifying the driving form of the vehicle; wherein the driving form includes four-wheel drive and two-wheel drive; in response to the driving form of the vehicle being two-wheel drive, reducing the output torque or disabling the launch mode.

[0014] On the other hand, a vehicle is provided, the vehicle comprising: a vehicle body and a vehicle driving device; the vehicle driving device is arranged on the vehicle body, and is used to implement the vehicle driving method as described in any of the above embodiments.

[0015] On the other hand, a computer-readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented: obtaining a power switching instruction, switching the driving mode of the vehicle to a target driving mode indicated by the power switching instruction; wherein the target driving mode is one of the preset driving modes of the vehicle; the preset driving modes include a normal mode, multiple first modes and / or multiple second modes, the driving power of the first mode is higher than the driving power of the normal mode, and the driving power of the second mode is lower than the driving power of the normal mode; in response to obtaining a power change request for carrying power demand, controlling the vehicle to respond to the power demand according to the power response rule of the target driving mode.

[0016] In the above-mentioned vehicle driving method, vehicle and computer-readable storage medium, the preset driving mode of the vehicle includes a normal mode, multiple first modes and / or multiple second modes, the driving power of the first mode is higher than the driving power of the normal mode, and the driving power of the second mode is lower than the driving power of the normal mode. That is to say, the present application includes multiple first modes and / or multiple second modes on the basis that the driving mode includes the normal mode, enriching the driving mode with higher driving power and / or the driving mode with lower driving power, and enriching the driving mode under the driving state of the vehicle by increasing the types of the first mode and / or the second mode, which is beneficial for users to adjust the driving mode of the vehicle to a mode that is as close to the driving needs as possible according to their driving habits and road environment. In other words, the present application is beneficial to optimizing the meticulousness of the power response efficiency strategy of the vehicle driving mode. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an embodiment of a vehicle of the present application;

[0018] Figure 2 It is a flow chart of an embodiment of a vehicle driving method of the present application;

[0019] Figure 3 is a flow chart of another embodiment of the vehicle driving method of the present application;

[0020] Figure 4 is a diagrammatic representation of an embodiment of the relationship between the over-temperature duration and the torque of the drive motor of the present application;

[0021] Figure 5 is a diagrammatic diagram of an embodiment of an external characteristic curve of a driving motor of the present application;

[0022] Figure 6 It is a structural diagram of an embodiment of a computer device of the present application. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0024] In order to solve the technical problems of the lack of development of special driving modes and poor adaptability to user needs in the related art, the present application provides a vehicle driving method, a vehicle and a computer-readable storage medium. By making the preset driving mode include a plurality of first modes with higher driving power and / or a plurality of second modes with lower driving power, the richness of the preset driving mode is increased, so as to facilitate the refinement of the power response efficiency strategy of the vehicle driving mode. The detailed technical solution of the present application is described below by example.

[0025] The vehicle driving method provided in this application can be applied to Figure 1 In the application environment shown. Figure 1 , Figure 1 It is a structural schematic diagram of a vehicle embodiment of the present application.

[0026] The vehicle includes a vehicle body and a vehicle drive device.

[0027] The vehicle body may include a driving power system, chassis, body, tires, electrical equipment, etc., which cooperate to realize the driving of the vehicle. It can be used to carry people and / or goods, to tow vehicles carrying people and / or goods, for special purposes, etc.

[0028] The vehicle drive device is arranged on the vehicle body. As the name implies, the vehicle drive device can be used to control the driving state of the vehicle.

[0029] For example, the vehicle driving device may be a HCU (Hybrid Control Unit), an independent control module, etc., which is not limited here.

[0030] For the specific definition of the vehicle and the vehicle drive device, please refer to the definition of the vehicle drive method in the following text, which will not be repeated here. The various modules in the above-mentioned vehicle and vehicle drive device can be implemented in whole or in part by software, hardware and their combination. The above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above modules.

[0031] The detailed process of the vehicle driving method of the present application is described below by way of example.

[0032] See also Figure 2 , Figure 2 It is a flow chart of an embodiment of a vehicle driving method of the present application.

[0033] S201: Obtain a power switching instruction, and switch the vehicle's driving mode to a target driving mode indicated by the power switching instruction; wherein the target driving mode is one of the vehicle's preset driving modes; the preset driving modes include a normal mode, multiple first modes and / or multiple second modes, the driving power of the first mode is higher than the driving power of the normal mode, and the driving power of the second mode is lower than the driving power of the normal mode.

[0034] In this embodiment, the driving mode includes driving power strategies such as power response speed and power response strategy for the vehicle, which is equivalent to the driving mode from the user's perspective. The power switching instruction is used to instruct the switching of the driving mode of the vehicle, which may carry information of the target driving mode.

[0035] As the name implies, the preset driving mode is a pre-set driving mode for the vehicle. The conventional mode is the basic driving mode of the vehicle. In some scenarios, it is also called the standard mode, ordinary mode, Normal mode, etc. Although there are differences in the names, they all refer to the same driving mode.

[0036] The first mode refers to a driving mode in which the driving power is higher than the driving power of the normal mode. The sports mode in the related art belongs to the category of the first mode. In this embodiment, the driving power (power response efficiency) between the various first modes is different, and the driving power of each first mode is higher than the normal mode.

[0037] The second mode refers to a driving mode in which the driving power is lower than that of the conventional mode, and the energy-saving (ECO) mode in the related art belongs to the category of the second mode. In this embodiment, the driving power (power response efficiency) between the various second modes is different, and the driving power of each second mode is lower than that of the conventional mode. For example, the second mode may include the ECO mode and a first sub-mode between the ECO mode and the conventional mode; or, the second mode may include the ECO mode and a second sub-mode with a driving power lower than that of the ECO mode; or, the second mode may include the first sub-mode and the second sub-mode; or, the second mode may include the first sub-mode, the ECO mode, and the second sub-mode, etc., which are not limited here.

[0038] In this embodiment, the preset driving mode of the vehicle includes a normal mode, multiple first modes and / or multiple second modes. In other words, the preset driving mode includes multiple first modes and / or multiple second modes on the basis of the normal mode. In this way, presetting multiple specifications of the first mode and / or the second mode can increase the richness and hierarchy of the driving mode of the vehicle, making it easier for users to switch to a driving mode that can adapt to driving needs.

[0039] For example, the preset driving mode may include a normal mode and multiple first modes; or, the preset driving mode may include a normal mode and multiple second modes; or, the preset driving mode may include a normal mode, a first mode and multiple second modes; or, the preset driving mode may include a normal mode, multiple first modes and a second mode, which will not be repeated here.

[0040] In this embodiment, a power switching instruction is obtained, and then the driving mode of the vehicle is switched to a target driving mode according to the power switching instruction. The target driving mode is one of the preset driving modes.

[0041] For example, the power switching command may come from a physical / virtual switch or multi-level knob provided at the vehicle's IVI (In-Vehicle Infotainment), steering wheel, vehicle gear position, etc., which is not limited here.

[0042] S202 : In response to obtaining a power change request for carrying power demand, controlling the vehicle to respond to the power demand according to a power response rule of a target driving mode.

[0043] In this embodiment, the power demand refers to the acceleration demand, deceleration demand, etc. indicated when the user steps on the accelerator or brake. In other words, the power change may include increasing the vehicle speed or decreasing the vehicle speed.

[0044] Each preset driving mode has a power response rule associated therewith, so as to adjust the driving speed of the vehicle according to changes in both the accelerator pedal and the brake pedal.

[0045] At the same time, the preset driving modes in this embodiment can be applied to the full-cycle driving state of the vehicle, and the full-cycle driving state includes but is not limited to the vehicle's starting state, driving state, reversing state, etc.

[0046] It can be seen that in this embodiment, the preset driving mode includes multiple first modes and / or multiple second modes, enriching the driving mode with higher driving power and / or the driving mode with lower driving power. By increasing the types of the first mode and / or the second mode to enrich the driving mode under the vehicle driving state, it is beneficial for the user to adjust the vehicle's driving mode to a mode that is as close to the driving needs as possible according to the driving habits and road environment. In other words, the present application is conducive to optimizing the meticulousness of the power response efficiency strategy of the vehicle driving mode.

[0047] Further, at least one of the preset driving modes has a preset sensory mode associated therewith, and the sensory mode includes at least one of simulating ambient sound and switching target color lighting mode. The sensory mode may include at least one of the light color in the car, IVI display screen, sound, and smell.

[0048] For example, the sensory mode of the ECO mode can preset the display of the blue main body, that is, the light color is blue and the IVI displays a blue theme series, which is not limited here.

[0049] In response to the vehicle's driving mode being switched to a target driving mode, the passenger compartment is controlled to switch to a sensory mode that matches the target driving mode, thereby being able to directly feedback to the user that the driving mode has been switched to the target driving mode, while also being able to improve the user's experience, etc. Furthermore, the sensory mode associated with the preset driving mode can also be customized by the user to improve the user's sense of participation, and can also help the sensory mode to be closer to user needs.

[0050] The following takes the preset driving mode including multiple first driving modes, the first driving mode including the motion mode and the ejection mode, the power response efficiency of the ejection mode is higher than the power response efficiency of the motion mode, and the target driving mode is the ejection mode as an example to illustrate the vehicle driving method of the present application.

[0051] See also Figure 3 , Figure 3 It is a flow chart of another embodiment of the vehicle driving method of the present application.

[0052] S301: Obtain ejection instruction.

[0053] In this embodiment, the ejection instruction is one of the power switching instructions in the aforementioned embodiments, and is used to instruct to switch the driving mode of the vehicle to the ejection mode.

[0054] For example, the passenger compartment or the vicinity of the driving seat of the vehicle may be provided with an option for the user to select the ejection mode, so that when the user selects the ejection mode, the vehicle driving device can collect / receive the ejection instruction.

[0055] In response to obtaining the ejection instruction, the vehicle's driving mode can be directly switched to the ejection mode, or the vehicle state and / or surrounding environment can be checked to determine whether it is suitable to start the ejection mode, which is not limited here. This embodiment takes an example of an implementation method of checking vehicle information.

[0056] S302: Obtain vehicle information.

[0057] In this embodiment, the vehicle information is used to verify whether the current time is suitable for starting the ejection mode.

[0058] Optionally, the vehicle information may include vehicle state information, so as to determine whether the current vehicle is suitable for switching to the ejection mode according to the vehicle's own conditions. Specifically, the vehicle state information may include at least one of power reserve information, tire pressure information, and vehicle state.

[0059] Among them, the power reserve information may refer to the remaining power of the vehicle battery, the remaining fuel (such as gasoline, diesel, etc.), etc., which is used to judge whether the ejection mode can be sustained for a long time. The tire pressure information may be the tire pressure of each tire of the vehicle, the tire pressure difference between tires, etc. The vehicle status may be the information fed back by the fault signal of the vehicle, etc. The fault signal can feedback whether the vehicle is faulty. The vehicle status may include at least two states: normal and faulty. In addition, the vehicle status may also include abnormal and other states, which are not limited here.

[0060] Optionally, the vehicle information may include environmental information around the vehicle, so as to determine whether it is suitable to switch to the ejection mode according to the vehicle environment. Specifically, the environmental information may include local environmental information or global environmental information.

[0061] The local environment information may be environment information of the vehicle's driving direction (forward or reverse) to ensure the safety of the driving direction as much as possible.

[0062] The global environment information may refer to multi-directional environment information, such as information collected by all cameras and / or all radar sensors of the vehicle.

[0063] In other words, the vehicle information may include at least one of power reserve information, tire pressure information, vehicle status, and environmental information.

[0064] Furthermore, the vehicle information may include both vehicle status information and environmental information, so as to make a judgment based on the information of the vehicle status and the surrounding environment to ensure the stability, safety, sustainability, etc. of the ejection mode. That is, the vehicle information may include power reserve information, tire pressure information, vehicle status, and global environmental information.

[0065] S303: Determine whether the vehicle information meets the prerequisite for starting the ejection mode.

[0066] In this embodiment, if the vehicle information meets the prerequisite for starting the ejection mode, step S304 is executed; if the vehicle information does not meet the prerequisite for starting the ejection mode, the process ends or step S309 is executed. Figure 3 And what is shown in this embodiment is an example of an implementation method of executing step S309.

[0067] Optionally, combined with the implementation example of "the vehicle information includes at least one of power reserve information, tire pressure information, vehicle status, and environmental information" in step S302, the prerequisites in this embodiment include at least one of the following corresponding to the vehicle information: the vehicle's power reserve is higher than the reserve threshold, the tire pressures of multiple tires are balanced, the vehicle status is normal, there are no obstacles in the global environment within a preset distance from the vehicle body, and whether the number of times the ejection mode is activated in the current vehicle driving cycle is less than the number threshold. The specific verification process of each sub-condition of the above prerequisites will be described in detail below, and will not be repeated here.

[0068] For example, the prerequisite may include that the vehicle power reserve is higher than a reserve threshold. Alternatively, the prerequisite may include that the tire pressure of multiple tires is balanced. Alternatively, the prerequisite may include that the vehicle state is normal. Alternatively, the prerequisite may include that there are no obstacles in the global environment within a preset distance from the vehicle body. Alternatively, the prerequisite may include whether the number of times the ejection mode is activated in the current vehicle driving cycle is less than a number threshold.

[0069] Furthermore, the prerequisite may include verification of vehicle status information and environmental information at the same time. For example, the prerequisite may include that the vehicle's power reserve is higher than the reserve threshold, the tire pressure of multiple tires is balanced, the vehicle is in a normal state, and there are no obstacles in the global environment within a preset distance from the vehicle body. And, only when the vehicle information meets the above sub-conditions, it is considered that the prerequisite for starting the ejection mode is met.

[0070] Furthermore, when the prerequisites are to perform a prerequisite check on both the vehicle status information and the environmental information, one of them may be checked first, and when the one checked first meets the prerequisite, the other may be checked; if the one checked first does not meet the prerequisite, it is deemed that the prerequisite is not met and there is no need to check the other, thereby reducing the computational burden of the vehicle drive device.

[0071] For example, the environmental information may be verified first, and then the vehicle state information may be verified. In this way, the vehicle state information may be verified while ensuring that the vehicle surrounding environmental information is relatively safe. If the vehicle surrounding environmental information does not meet the environment required by the prerequisite, the vehicle information may not need to be verified, thereby reducing the computational burden of the vehicle drive device.

[0072] S304: Switch the driving mode of the vehicle to the ejection mode.

[0073] In this embodiment, in response to the prerequisite for launching the ejection mode being met, the driving mode is allowed to be switched to the ejection mode. In other words, when it is determined that the vehicle information meets the prerequisite, the ejection mode can be switched directly, or the vehicle can be switched to the ejection mode after other controls are performed, which is not limited here.

[0074] Combined with the implementation method of the sensory mode described in the previous article, when the vehicle is switched to the ejection mode, the IVI can be switched to the corresponding animation display, and the style of the whole vehicle can be displayed as a red-themed animation to highlight the sporty style; you can also actively turn on the simulated sound waves to simulate the heavy and low sound of the racing car to increase the atmosphere of the current ejection mode.

[0075] Furthermore, when the driving mode of the vehicle is switched to the launch mode, the air suspension can be controlled to lower its height and / or the use of the functions in the passenger compartment can be restricted, wherein the functions in the passenger compartment include at least one of an air conditioning function, an entertainment function, and a seat additional function.

[0076] Specifically, when the vehicle's driving mode is switched to the launch mode, a control instruction can be sent to the chassis air suspension to control the air suspension to lower its height, thereby reducing wind resistance and further improving the vehicle's dynamics. Optionally, the air suspension can be controlled to lower a certain height, or the air suspension can be controlled to lower to the lowest point, which is not limited here.

[0077] Alternatively, when the vehicle's driving mode is switched to ejection mode, an accessory restriction instruction can be sent to the vehicle's passenger compartment to restrict the use of air conditioning, entertainment functions, and vehicle basic systems (such as seat ventilation, heating, massage, etc.) in the passenger compartment, thereby giving priority to the dynamics of the vehicle's ejection mode. Optionally, the energy allocated to the functions in the passenger compartment can be reduced, or the use of the functions in the passenger compartment can be prohibited, which is not limited here.

[0078] Alternatively, when the vehicle's driving mode is switched to launch mode, the air suspension can be controlled to lower its height and restrict the use of functions in the passenger compartment, which is not limited here.

[0079] S305: Obtain an acceleration request.

[0080] In this embodiment, in response to the acceleration request in the ejection mode, the torque that matches the acceleration request of the vehicle and is not higher than the vehicle torque extreme value needs to be evaluated as the output torque. The following is an example of the steps for obtaining the output torque. Among them, the acceleration request is a request when the user has a need to increase the vehicle's driving speed (i.e., vehicle speed), which can be an action such as the user stepping on the accelerator pedal, or can be obtained by other IVI screen selections, voice control, etc., which are not limited here.

[0081] S306: Obtaining an initial required torque that matches the vehicle acceleration request.

[0082] In this embodiment, the initial required torque may be analyzed based on the throttle information.

[0083] Furthermore, the initial required torque can be analyzed in combination with the vehicle speed and throttle information (such as pedal opening information and / or pedal opening rate information, etc.), wherein the vehicle speed is inversely proportional to the initial required torque, and the throttle pedal opening is directly proportional to the initial required torque.

[0084] For example, a two-dimensional relationship table of vehicle speed, accelerator pedal opening information and required torque can be pre-established through real vehicle debugging and other methods. When an acceleration request is obtained, the vehicle speed and accelerator pedal opening information are obtained, and the required torque matching the two is queried in the two-dimensional relationship table as the initial required torque. The following is an example of a two-dimensional relationship table of vehicle speed, accelerator pedal opening information and required torque through Table 1:

[0085] Table 1 Two-dimensional relationship between vehicle speed, accelerator pedal opening and required torque

[0086]

[0087] For example, when the accelerator pedal opening is 25% and the vehicle speed is 80km / h (kilometers per hour), the current initial required torque can be obtained by querying Table 1 as 1313Nm (Newton meters). It should be noted that Table 1 only exemplifies part of the content and values ​​of the two-dimensional relationship table of vehicle speed, accelerator pedal opening and required torque, and does not limit the vehicle speed, accelerator pedal opening and required torque, and initial required torque in this application.

[0088] In an alternative embodiment, a calculation formula, prediction model, etc. between the vehicle speed and the accelerator pedal opening information and the required torque can be established, which is not limited here.

[0089] S307: Amplify the initial required torque to obtain an amplified torque that is not less than the initial required torque.

[0090] In this embodiment, the vehicle speed and the previous output torque are obtained, the torque gradient matching the vehicle speed and the previous output torque is analyzed, multiple preparatory increases are obtained, and the maximum of the multiple preparatory increases is superimposed with the previous output torque to form an increase torque.

[0091] Specifically, according to the vehicle speed, driving torque changes, and power response issues, a two-dimensional relationship table between the vehicle speed, previous output torque, and torque gradient can be pre-established through real vehicle debugging and other methods. During vehicle acceleration, the vehicle speed and previous output torque are obtained, and the corresponding two-dimensional relationship table is queried to obtain the torque gradient using the current torque output. The following two-dimensional relationship table of vehicle speed, previous output torque, and torque gradient is exemplified in Table 2:

[0092] Table 2 Two-dimensional relationship between vehicle speed, previous output torque and torque gradient

[0093]

[0094] For example, when the vehicle speed is 100 km / h and the last output torque is 10000 Nm, the torque gradient can be obtained as 10000 Nm by querying Table 2. It should be noted that Table 2 only provides examples of the vehicle speed, the last output torque and the partial content and values ​​of the torque gradient, and does not limit the vehicle speed, the last output torque and the torque gradient in this application.

[0095] In an alternative embodiment, a calculation formula or prediction model may be established between the vehicle speed and the previous output torque and the torque gradient, which is not limited here.

[0096] Next, multiple preparatory increases can be calculated. Among them, the multiple preparatory increases include at least the first preparatory increase and the second preparatory increase, the first preparatory increase is the difference between the initial required torque and the previous output torque, and the second preparatory increase is the torque that weights the torque gradient using the data period. Among them, the data period can be a period for collecting vehicle information, vehicle speed, etc., which is equivalent to the data collection period and data calculation period, and is not limited here. Among them, the data period can be 10ms, that is, 0,01s; or the data period can be 20ms, that is, 0.02s.

[0097] Furthermore, more preparatory increases may be calculated according to the current initial required torque, power reserve, etc., which are not limited here.

[0098] The multiple preparatory amplifications are compared, and the one with the largest torque among the multiple preparatory amplifications is obtained and superimposed with the previous output torque to obtain the amplified torque, thereby improving the power of the vehicle as much as possible.

[0099] Taking the multiple preparatory boosts including the first preparatory boost and the second preparatory boost as an example, the formula for calculating the boost torque may be as follows:

[0100] T1=T z +MAX{(T0-T z ), (Y*0.01)} Formula 1-1

[0101] Among them, T1 is the amplification torque; T z is the previous output torque; MAX{(T0-T z ), (Y*0.01)} is taken as (T0-T z ) and (Y*0.01), whichever is greater; T0 is the initial required torque; Y is the torque gradient; 0.01 is the data period.

[0102] In an alternative embodiment, multiple preliminary amplifications may be weightedly fused, and the torque obtained by weighted fusion may be superimposed on the previous output torque to obtain the amplified torque, which is not limited here.

[0103] In an alternative embodiment, the data period may be used for weighting in the process of calculating the torque gradient, and the torque gradient thus obtained may be used as the second preliminary increase, which is not limited here.

[0104] S308: Compare the amplified torque with the vehicle torque extreme value, and take the smaller one as the output torque of the whole vehicle.

[0105] In this embodiment, the vehicle torque extreme value is equivalent to the limit value of the vehicle torque considered in this embodiment, which is the maximum torque value to ensure the safety and reliability of the vehicle. In this embodiment, the amplification torque is arbitrated in combination with the vehicle torque extreme value to obtain the output torque, which is conducive to ensuring the safety and reliability of the vehicle.

[0106] Optionally, the number of vehicle torque extreme values ​​may be at least one. The at least one vehicle torque extreme value includes at least one of a first torque extreme value, a second torque extreme value, and a third torque extreme value. The minimum of the boost torque and the at least one vehicle torque extreme value may be taken as the output torque of the whole vehicle, thereby obtaining a maximum output torque suitable for the vehicle while also facilitating safety during vehicle driving.

[0107] The first extreme value of the torque is associated with the current temperature of the drive motor, the second extreme value of the torque is associated with the current rotation speed of the drive motor, and the third extreme value of the torque is associated with the vehicle state.

[0108] Association means that there is a corresponding relationship between the two, and the corresponding relationship can be a preset mapping relationship, a two-dimensional chart, a table, a conversion formula, etc., which is not limited here. The following is a specific example:

[0109] For example, the vehicle torque extreme value may include a first torque extreme value associated with the current temperature of the drive motor. The reason for this design is that, considering that when the accelerator pedal and the brake pedal are pressed at the same time, the drive motor will not be able to release kinetic energy and generate heat that accumulates inside the motor, and there may even be a risk of motor overheating and hardware damage. Therefore, through the performance of the motor stall test, a correspondence is established between the maximum drive torque limit when the motor is overheated (i.e., the first torque extreme value) and the duration of the motor overheating. In this way, by constraining the vehicle output torque through the first torque extreme value, the risk of the drive motor overheating lasting too long can be reduced, which is beneficial to protecting the drive motor, extending the service life of the drive motor, and improving the safety and reliability of vehicle driving.

[0110] like Figure 4 As shown in the example, a graphical relationship between the duration of the over-temperature phenomenon of the drive motor and the torque can be formed, and the torque obtained by looking up the temperature table is used as the current first torque extreme value. In an alternative embodiment, a formula, a prediction model, etc., which are not limited here, can also be used to form the relationship between the duration of the over-temperature phenomenon and the torque.

[0111] For example, the vehicle torque extreme value may include a torque second extreme value associated with the rotational speed of the drive motor. The reason for such design is that, considering that the inherent characteristics of the drive motor (such as factors such as rotational speed) will determine the limit value of the drive motor torque to a certain extent, therefore, establishing a relationship between the rotational speed of the drive motor and the maximum drive torque limit (i.e., the torque second extreme value) is conducive to ensuring the reliability and safety of the drive motor operation.

[0112] like Figure 5 As shown in the example, the second extreme value of the torque can be obtained based on the external characteristic curve of the driving motor. In an alternative embodiment, it can also be a formula or a prediction model for forming a relationship between the rotation speed and the torque of the driving motor, which is not limited here.

[0113] It should be noted that Figure 4 as well as Figure 5 The graphical relationship shown as an example is only for illustration, and the numerical values ​​therein are also only for example, which may not be the actual value of vehicle driving, and do not serve to limit the first extreme value of torque and the second extreme value of torque in this embodiment.

[0114] For example, the vehicle torque extreme value may include a third extreme value of torque associated with the vehicle state. As described above, the vehicle state may include at least two states, a normal state and a fault state, and the third extreme value of torque in different states is different. Among them, the third extreme value of torque when the vehicle state is normal is greater than the third extreme value of torque when the vehicle state is faulty. In this way, the risk of serious failure of the whole vehicle due to intense driving can be reduced. At the same time, the risk of worsening failure when the vehicle fails can be reduced, and the vehicle can be allowed to limp, so that the user can drive the vehicle to a relatively safe location for processing.

[0115] In this way, in the process of obtaining the third extreme value of torque, the vehicle state can be identified. In response to the normal state of the vehicle, the third extreme value of torque can be a preset value; in response to the fault state of the vehicle, the third extreme value of torque can be the second extreme value of torque with a preset weight. For example, the preset value can be 9000Nm, 10000Nm, 10500Nm, 11000Nm, 11250Nm, etc., and the preset weight can be 15%, 17.5%, 20%, 22.5%, 25%, etc., which are not limited here.

[0116] In an alternative embodiment, the third extreme value of torque when the vehicle is in a fault state may also be another preset value, which is not limited here. Alternatively, the second extreme value of torque when the vehicle is in a normal state is predicted based on real-time vehicle information to better adapt to the current state of the vehicle, which is not limited here.

[0117] Then, the minimum of the amplification torque and at least one vehicle torque extreme value can be taken as the output torque of the whole vehicle, thereby reducing the risk of overloading the drive motor and the vehicle and even affecting safety.

[0118] For example, the vehicle torque extreme value may include the first torque extreme value, the second torque extreme value and the third torque extreme value, and the smallest of the amplified torque, the first torque extreme value, the second torque extreme value and the third torque extreme value is taken as the output torque of the whole vehicle. In this way, the limit state of the vehicle can be restricted in a multi-dimensional, multi-faceted and relatively comprehensive manner, which is conducive to ensuring the safety and reliability of the vehicle. The smallest of the amplified torque, the first torque extreme value, the second torque extreme value and the third torque extreme value is selected as the output torque. At the same time, the vehicle torque extreme value may further include torque limit values ​​associated with other vehicle information, which are not limited here.

[0119] Specifically, the minimum of the four values ​​can be obtained by using the min() function, etc., which is not limited here. Alternatively, the amplified torque can be sequentially compared with the first extreme value of torque, the second extreme value of torque, and the third extreme value of torque in cascade, and the smaller one is selected for the next comparison; wherein, the comparison order with the first extreme value of torque, the second extreme value of torque, and the third extreme value of torque is not limited here.

[0120] For example, the amplified torque can be sequentially compared with the first extreme value of torque, the second extreme value of torque, and the third extreme value of torque in a cascade manner, as shown in the following formula:

[0121] T2=T1≤L1 Formula 1-2

[0122] T3=Min(T2,L2) Formula 1-3

[0123] T4=T3≤L0 Formula 1-4

[0124] Among them, T2 is the output result of the first comparison; T1 is the amplified torque; L1 is the second extreme value of the torque; Formula 1-2 means that when T1 is less than or equal to L1, T2=T1, otherwise T2=L1; T3 is the output result of the second comparison; L2 is the third extreme value of the torque; Min(T2, L2) is the smaller of T2 and L2; T4 is the output torque; L0 is the first extreme value of the torque; Formula 1-2 means that when T3 is less than or equal to T4=T3, otherwise T4=L0.

[0125] If so, the obtained output torque matches the acceleration request of the vehicle and is not higher than the vehicle torque limit. In other words, this embodiment has a vehicle torque limit logic, which can ensure that the actual output torque is output within the vehicle torque limit logic.

[0126] In an alternative embodiment, the fourth torque extreme value may be formed based on the motor external characteristics and the motor conversion speed ratio as the vehicle torque extreme value, or the vehicle torque extreme value includes the fourth torque extreme value and other extreme values, which are not limited here. The calculation formula of the fourth torque extreme value may be shown as an example in the following formula:

[0127] T max =T D *M-style 1-5

[0128] Among them, T max is the fourth extreme value of torque; T D is the external characteristic maximum torque of the motor; M is the conversion speed ratio of the motor.

[0129] S309: Feedback to the user related information that does not meet the prerequisites.

[0130] In this embodiment, in response to the vehicle information meeting the prerequisites for starting the ejection mode, relevant information on the failure to meet the prerequisites is fed back to the user to let the user know the reason why the vehicle currently does not meet the prerequisites, so that the user can adjust the vehicle to meet the prerequisites. At the same time, feedback can be given to the user when the ejection mode cannot be started, thereby reducing the risk of the vehicle having no feedback when the user triggers the ejection mode and affecting the user's experience, which can be beneficial to improving the user's experience.

[0131] Optionally, the method of giving feedback to the user that the prerequisite is not met may be through screen display, voice broadcast, etc., which is not limited here. The specific implementation will be given as an example when giving an example of the prerequisite later, and will not be repeated here.

[0132] Furthermore, in this embodiment, the driving mode of the vehicle can also be identified. The driving modes include four-wheel drive and two-wheel drive; four-wheel drive means that the vehicle maintains four-wheel drive during the entire driving process, and the engine output torque is distributed to the front and rear wheels in a fixed ratio; two-wheel drive means that the vehicle maintains two-wheel drive during the entire driving process, and the engine output torque is distributed to the drive wheels.

[0133] For example, the electric drive configuration signals of the actual vehicle can be collected, namely the front motor McuF signal and the rear motor McuR signal. When the input signals of the front and rear motors are present at the same time, the current vehicle is judged to be a four-wheel drive model, that is, MODE = M AWD ; When there is only input signal from the rear motor, the current vehicle is judged to be a two-wheel drive model, that is, MODE = M 2WD .

[0134] In response to the vehicle being driven in two-wheel drive mode, the output torque in step S308 is reduced. Alternatively, the launch mode may be disabled when a launch command is received in this embodiment to reduce the risk of poor vehicle ride comfort or potential safety hazards.

[0135] In response to the vehicle's driving mode being four-wheel drive, there is no need to adjust the output power. When the vehicle is four-wheel drive, when comparing with the vehicle's torque extreme value, the torque of all the vehicle's driving motors can be used to compare with the vehicle's torque extreme value.

[0136] Optionally, when the vehicle is a hybrid vehicle, when the vehicle is switched to launch mode, the vehicle can be switched to parallel mode, coordinating the drive motor and the generator to provide power sources at the same time, so that the driving energy of the entire vehicle comes from both the battery and the engine, which is beneficial to ensure the durability of the vehicle's acceleration capability.

[0137] The state of charge of the vehicle's drive battery can be obtained. The state of charge is the ratio of the remaining capacity of the battery after it has been used for a period of time or has not been used for a long time to its capacity in a fully charged state.

[0138] For example, the state of charge can be SOC (state of charge). The value range of SOC can be 0 to 100; when SOC = 0, it means that the battery is fully discharged; when SOC = 100, it means that the battery is fully charged; when SOC takes an intermediate value between 0 and 100, it represents the current remaining power of the battery, such as 50, 65.3, 75 and other integer values ​​and / or non-integer values. Alternatively, SOC can also be expressed as a percentage, that is, the value range of SOC can be 0 to 1, and the value range of SOC can be adjusted according to actual habits, and is not limited here.

[0139] Analyze the power generation of the range extender that matches the state of charge. The state of charge of the drive battery is inversely proportional to the power generation of the range extender. Optionally, a mapping relationship between the state of charge and the power generation can be established in advance, or a relationship formula, a prediction model, etc.

[0140] For example, a real vehicle test can be conducted on the vehicle to establish a relationship table between SOC and power generation that can ensure sufficient battery and power. For example, combined with the prerequisite for switching the ejection mode mentioned above, including the SOC value range of not less than 80% in real time, the SOC value range is 80%-100%, and the power generation value range can be 60kW-0kW. It should be noted that the above values ​​are for illustrative purposes only, rather than strictly limiting the specific values.

[0141] The torque obtained by superimposing the power generated by the drive motor on the power generated by the range extender can be used as the power source of the vehicle. Furthermore, the influence of the power loss on the output power of the whole vehicle can also be considered, and the output power of the whole vehicle can be calculated as shown in the following formula:

[0142] S1=S2+S3-S4 Formula 1-6

[0143] Among them, S1 is the vehicle driving power; S2 is the range extender power; S3 is the power of the power motor; S4 is the accessory power. The power motor is powered by the drive battery.

[0144] The calculation formula for the torque as the power source based on the output power after the range extension is as follows:

[0145] T=9550*S1 / n Formula 1-7

[0146] Among them, T is the torque as the power source; S1 is the vehicle driving power, and n is the motor speed.

[0147] It should be noted that there is a phenomenon that a launch start mode has been developed in the related art, but there is still an essential difference between the launch start mode and the launch mode in this application. The launch start mode in the related art can only be applied to the process of vehicle starting. At this time, the vehicle is in a state of no power or low power. The launch start mode can quickly increase the vehicle speed to the normal driving speed, but there is still a problem that the performance of the drive motor cannot be fully developed. However, the launch mode in this application is like a conventional mode. It can be applied throughout the vehicle driving process, making full use of the drive motor to improve the vehicle's power response efficiency, and at the same time, a variety of trigger strategies are used to ensure the safety, reliability and sustainability of the vehicle in the launch mode.

[0148] The following is an example of a specific verification process of each sub-condition of the prerequisite and an implementation method of providing feedback to the user when the sub-condition is not met.

[0149] Verification of whether the vehicle's environmental information meets the prerequisites may include:

[0150] The vehicle's intelligent driving components collect full-vehicle camera signals and full-vehicle radar signals. The vehicle drive device obtains the aforementioned signals and judges the environmental information fed back in each signal to determine whether there are obstacles in the global environment within a preset distance from the vehicle body.

[0151] For example, after turning on the ejection mode function, the control IVI prompts relevant information such as "Please confirm that the surrounding environment is safe, whether to turn on the ejection mode" through screen display, voice broadcast, etc. Perform signal analysis on the radar signals of the entire vehicle to determine the recognition status of the radar signals; when N radar signals such as Yradar1, Yradar2, Yradar3-YradarN are received, it is determined whether the feedback distance of the N radar signals exceeds the preset distance at the same time. When the feedback distance of one of the radar signals is within the preset distance, it is considered that there are obstacles around the vehicle, and the current safety level X=X0 is output. On the contrary, when the feedback distances of the analyzed N radar signals are all greater than the preset distance, it is considered that the vehicle is in a safe environment, and the current safety level X=X1 is output. Among them, the preset distance can be 80cm, 100cm, 120cm, etc., which is not limited here.

[0152] Optionally, relevant videos can be called up to be displayed on the IVI screen for the driver to view and confirm, and the safety level X obtained based on the environmental information can be displayed on the IVI screen. In addition, when the safety level is X0, the problematic radar signal will be fed back to the IVI large screen and displayed at the corresponding position of the vehicle for a flashing prompt, which will continue for a certain period of time (such as 1 minute, etc.) to assist the driver in checking the area around the vehicle. After the continuous prompt time reaches a certain period of time, it can stop flashing and the whole vehicle video display. When the safety level is X1, it will be fed back to the IVI large screen, the active video display will be canceled, and a prompt box will pop up.

[0153] The verification of whether the vehicle's power reserve meets the prerequisite may include: the power reserve may be the remaining power of the vehicle's battery and / or the remaining fuel in the vehicle's tank. Therefore, the prerequisite for matching the vehicle's power reserve includes that the vehicle's power reserve is higher than the reserve threshold, thereby ensuring the sustainability of the ejection mode and reducing the risk that the vehicle is insufficient to travel in a short period of time after the ejection mode is activated. In other words, only the remaining power of the vehicle's battery may be judged, or only the remaining fuel may be judged, or both the remaining power and the remaining fuel may be judged.

[0154] For example, the prerequisites may include: the remaining power of the vehicle should not be less than the preset power, and the remaining fuel of the vehicle should be greater than the preset fuel. The preset power can be 70%, 75%, 80%, 82.5%, 85%. And the preset fuel can be 25%, 30%, 32.5%, 35%. It should be noted that the above values ​​are only for illustration and do not strictly limit the calculation form of power and fuel, the preset power, and the preset fuel.

[0155] If the conditions are met, the vehicle is considered to meet the preconditions of the power sub-condition. If the power sub-condition is not met, the relevant information can be actively prompted through screen display, voice broadcast, etc. according to the actual non-compliant power source: "The fuel level is low, and the range may be insufficient due to intense driving in the ejection mode. To ensure sufficient vehicle range, please refuel before trying again" and / or "The battery is low, the driving performance cannot be fully reflected when the ejection mode is turned on. Please charge more than 80% before trying again."

[0156] Verification of the tire pressures of multiple tires to see if they meet prerequisites may include:

[0157] Balanced tire pressure across multiple tires.

[0158] Optionally, the tire pressure of each tire is within a preset range; or, the tire pressure difference between the tires is within a preset range; or, among the tire pressure differences of the tires, the maximum tire pressure difference and the minimum tire pressure difference are less than a preset difference. For example, the preset difference may be 3, 4, 5, 6, 7.5, etc.

[0159] For example, the prerequisite may require that the four tire pressure signals W1, W2, W3, and W4 of the vehicle do not trigger the tire pressure alarm, that is, the tire pressure of the entire vehicle is within the normal range; and the difference between the maximum tire pressure value and the minimum tire pressure value collected is less than or equal to 5, then it is considered that the tire pressure sub-condition of the prerequisite is met. If the tire pressure sub-condition is not met, the relevant information can be actively prompted through screen display, voice broadcast, etc.: There is an abnormal tire pressure. To ensure driving safety during intense driving, please add tire pressure before trying again.

[0160] Verification of whether the vehicle status meets the prerequisites may include:

[0161] The vehicle state is normal. As described above, the vehicle state includes at least two states, namely, normal and faulty. When the vehicle state is normal, it is considered that the state sub-condition of the prerequisite is met.

[0162] Verification of whether the vehicle's current driving cycle meets the prerequisites includes:

[0163] Whether the number of times the ejection mode is activated in the current vehicle driving cycle is less than the number threshold. Among them, the node of the current vehicle driving cycle can be the current start time of the vehicle. Among them, the number threshold can be 9 times, 10 times, 12 times, etc., which are not limited here. If so, it can reduce the risk of abnormal start and stop or even damage of the range extender caused by frequent activation of the ejection mode, and it is also beneficial to ensure the stability of the ejection mode.

[0164] Further, whether the prerequisite is met is determined according to the vehicle state information, and the available states of the ejection mode obtained may include Z0 and Z1, wherein Z0 indicates that switching to the ejection mode is not allowed, and Z1 indicates that switching to the ejection mode is allowed.

[0165] Furthermore, whether to switch the ejection mode to the activation state can be determined according to the safety level (X0, X1) and the available state (Z0, Z1). When the vehicle safety level is X1 and the available state is Z1, the ejection mode is allowed to be turned on, and the available state of the ejection mode is H=H1; otherwise, the ejection mode is not allowed to be turned on, and the available state of the ejection mode is H=H0.

[0166] It should be understood that although Figure 2-Figure 3 The steps in the flowchart are shown in sequence as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified in this document, there is no strict order restriction for the execution of these steps, and these steps can be executed in other orders. Moreover, Figure 2-Figure 3At least part of the steps may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily executed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be executed in turn or alternately with other steps or at least part of the sub-steps or stages of other steps.

[0167] In summary, this application can further improve the acceleration performance of new energy vehicles under vehicle protection, and can also further improve the driving experience in ejection mode, immersively experience the system and extreme acceleration performance. The vehicle status and surrounding safety environment are identified through basic vehicle information, and the electric drive torque output is controlled according to the interactive display on the IVI screen, so as to achieve the purpose of improving vehicle acceleration performance and protecting vehicle safety.

[0168] See also Figure 6 , Figure 6 It is a structural diagram of an embodiment of a computer device of the present application.

[0169] In this embodiment, the computer device may be a vehicle driving device.

[0170] The computer device includes a processor 41 and a memory 42 connected via a system bus. The processor 41 of the computer device is used to provide computing and control capabilities. The memory 42 of the computer device includes a non-volatile storage medium and an internal memory.

[0171] Those skilled in the art will understand that Figure 6 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0172] In one embodiment, a computer device is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the following steps when executing the computer program:

[0173] S201: Obtain a power switching instruction, and switch the vehicle's driving mode to a target driving mode indicated by the power switching instruction; wherein the target driving mode is one of the vehicle's preset driving modes; the preset driving modes include a normal mode, multiple first modes and / or multiple second modes, the driving power of the first mode is higher than the driving power of the normal mode, and the driving power of the second mode is lower than the driving power of the normal mode.

[0174] S202 : In response to obtaining a power change request for carrying power demand, controlling the vehicle to respond to the power demand according to a power response rule of a target driving mode.

[0175] Furthermore, at least one preset driving mode has a preset sensory mode associated therewith, and the sensory mode includes at least one of simulating ambient sound and switching a target color lighting mode.

[0176] In response to the driving mode of the vehicle being switched to a target driving mode, the passenger cabin is controlled to switch to a sensory mode matching the target driving mode.

[0177] In one embodiment, the preset driving mode includes multiple first driving modes, the first driving mode includes a motion mode and a catapult mode, the power response efficiency of the catapult mode is higher than the power response efficiency of the motion mode, the target driving mode is the catapult mode, and the processor further implements the following steps when executing the computer program:

[0178] S301: Obtain ejection instruction.

[0179] S302: Obtain vehicle information.

[0180] In this embodiment, the vehicle information may include at least one of remaining power information, tire pressure information, vehicle status, and global environment information.

[0181] S303: Determine whether the vehicle information meets the prerequisite for starting the ejection mode.

[0182] In this embodiment, if the vehicle information meets the prerequisites for starting the ejection mode, step S304 is executed; if the vehicle information does not meet the prerequisites for starting the ejection mode, relevant information that does not meet the prerequisites is fed back to the user or the process ends.

[0183] The prerequisites include: the vehicle's power reserve is higher than the reserve threshold, the tire pressure of multiple tires is balanced, the vehicle is in normal condition, there are no obstacles in the global environment within a preset distance from the vehicle body, and whether the number of times the ejection mode is activated in the current vehicle driving cycle is less than the number threshold.

[0184] S304: Switch the driving mode of the vehicle to the ejection mode.

[0185] In this embodiment, in response to the prerequisite for launching the ejection mode being met, the driving mode is allowed to be switched to the ejection mode. In other words, when it is determined that the vehicle information meets the prerequisite, the ejection mode can be switched directly, or the vehicle can be switched to the ejection mode after other controls are performed, which is not limited here.

[0186] Furthermore, when the driving mode of the vehicle is switched to the launch mode, the air suspension can be controlled to lower its height and / or the use of the functions in the passenger compartment can be restricted, wherein the functions in the passenger compartment include at least one of an air conditioning function, an entertainment function, and a seat additional function.

[0187] Optionally, the state of charge of the vehicle's drive battery can also be obtained; the power generation power of the range extender that matches the state of charge is analyzed; wherein the state of charge is inversely proportional to the power generation power of the range extender; the torque obtained by superimposing the power generation power of the power motor on the power generation power of the range extender is used as the power source of the vehicle; wherein the power motor is powered by the drive battery.

[0188] S305: Obtain an acceleration request.

[0189] In this embodiment, in response to the acceleration request in the launch mode, a torque that matches the acceleration request of the vehicle and is not higher than the vehicle torque limit needs to be evaluated as the output torque. The steps of obtaining the output torque are exemplified below.

[0190] S306: Obtaining an initial required torque that matches the vehicle acceleration request.

[0191] S307: Amplify the initial required torque to obtain an amplified torque that is not less than the initial required torque.

[0192] In this embodiment, the vehicle speed and the previous output torque are obtained, the torque gradient matching the vehicle speed and the previous output torque is analyzed, multiple preparatory increases are obtained, and the maximum of the multiple preparatory increases is superimposed with the previous output torque to form an increase torque.

[0193] The multiple preparatory increases include at least a first preparatory increase and a second preparatory increase, the first preparatory increase is the difference between the initial required torque and the previous output torque, and the second preparatory increase is the torque obtained by weighting the torque gradient using the data period.

[0194] S308: Compare the amplified torque with the vehicle torque extreme value, and take the smaller one as the output torque of the whole vehicle.

[0195] In this embodiment, the number of vehicle torque extremes may be at least one. The at least one vehicle torque extreme may include at least one of a first torque extreme, a second torque extreme, and a third torque extreme. The first torque extreme is associated with the current temperature of the drive motor, the second torque extreme is associated with the current speed of the drive motor, and the third torque extreme is associated with the vehicle state. The minimum of the increase torque and the at least one vehicle torque extreme is taken as the output torque of the whole vehicle.

[0196] For example, the vehicle torque extreme value may include a first torque extreme value, a second torque extreme value, and a third torque extreme value. The first torque extreme value, the second torque extreme value, and the third torque extreme value may be obtained; wherein the first torque extreme value is associated with the current temperature of the drive motor, the second torque extreme value is associated with the current speed of the drive motor, and the third torque extreme value is associated with the vehicle state; the smallest of the increase torque, the first torque extreme value, the second torque extreme value, and the third torque extreme value is taken as the output torque of the whole vehicle.

[0197] If so, the resulting output torque matches the vehicle's acceleration request and is not higher than the vehicle torque limit.

[0198] Further, the driving form of the vehicle can be identified; wherein the driving form includes four-wheel drive and two-wheel drive; in response to the driving form of the vehicle being two-wheel drive, the output torque is reduced or the launch mode is disabled.

[0199] In one embodiment, a computer readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

[0200] S201: Obtain a power switching instruction, and switch the vehicle's driving mode to a target driving mode indicated by the power switching instruction; wherein the target driving mode is one of the vehicle's preset driving modes; the preset driving modes include a normal mode, multiple first modes and / or multiple second modes, the driving power of the first mode is higher than the driving power of the normal mode, and the driving power of the second mode is lower than the driving power of the normal mode.

[0201] S202 : In response to obtaining a power change request for carrying power demand, controlling the vehicle to respond to the power demand according to a power response rule of a target driving mode.

[0202] Furthermore, at least one preset driving mode has a preset sensory mode associated therewith, and the sensory mode includes at least one of simulating ambient sound and switching a target color lighting mode.

[0203] In response to the driving mode of the vehicle being switched to a target driving mode, the passenger cabin is controlled to switch to a sensory mode matching the target driving mode.

[0204] In one embodiment, the preset driving mode includes multiple first driving modes, the first driving mode includes a motion mode and a catapult mode, the power response efficiency of the catapult mode is higher than the power response efficiency of the motion mode, the target driving mode is the catapult mode, and when the computer program is executed by the processor, the following steps are further implemented:

[0205] S301: Obtain ejection instruction.

[0206] S302: Obtain vehicle information.

[0207] In this embodiment, the vehicle information may include at least one of remaining power information, tire pressure information, vehicle status, and global environment information.

[0208] S303: Determine whether the vehicle information meets the prerequisite for starting the ejection mode.

[0209] In this embodiment, if the vehicle information meets the prerequisites for starting the ejection mode, step S304 is executed; if the vehicle information does not meet the prerequisites for starting the ejection mode, relevant information that does not meet the prerequisites is fed back to the user or the process ends.

[0210] The prerequisites include: the vehicle's power reserve is higher than the reserve threshold, the tire pressure of multiple tires is balanced, the vehicle is in normal condition, there are no obstacles in the global environment within a preset distance from the vehicle body, and whether the number of times the ejection mode is activated in the current vehicle driving cycle is less than the number threshold.

[0211] S304: Switch the driving mode of the vehicle to the ejection mode.

[0212] In this embodiment, in response to the prerequisite for launching the ejection mode being met, the driving mode is allowed to be switched to the ejection mode. In other words, when it is determined that the vehicle information meets the prerequisite, the ejection mode can be switched directly, or the vehicle can be switched to the ejection mode after other controls are performed, which is not limited here.

[0213] Furthermore, when the driving mode of the vehicle is switched to the launch mode, the air suspension can be controlled to lower its height and / or the use of the functions in the passenger compartment can be restricted, wherein the functions in the passenger compartment include at least one of an air conditioning function, an entertainment function, and a seat additional function.

[0214] Optionally, the state of charge of the vehicle's drive battery can also be obtained; the power generation power of the range extender that matches the state of charge is analyzed; wherein the state of charge is inversely proportional to the power generation power of the range extender; the torque obtained by superimposing the power generation power of the power motor on the power generation power of the range extender is used as the power source of the vehicle; wherein the power motor is powered by the drive battery.

[0215] S305: Obtain an acceleration request.

[0216] In this embodiment, in response to the acceleration request in the launch mode, a torque that matches the acceleration request of the vehicle and is not higher than the vehicle torque limit needs to be evaluated as the output torque. The steps of obtaining the output torque are exemplified below.

[0217] S306: Obtaining an initial required torque that matches the vehicle acceleration request.

[0218] S307: Amplify the initial required torque to obtain an amplified torque that is not less than the initial required torque.

[0219] In this embodiment, the vehicle speed and the previous output torque are obtained, the torque gradient matching the vehicle speed and the previous output torque is analyzed, multiple preparatory increases are obtained, and the maximum of the multiple preparatory increases is superimposed with the previous output torque to form an increase torque.

[0220] The multiple preparatory increases include at least a first preparatory increase and a second preparatory increase, the first preparatory increase is the difference between the initial required torque and the previous output torque, and the second preparatory increase is the torque obtained by weighting the torque gradient using the data period.

[0221] S308: Compare the amplified torque with the vehicle torque extreme value, and take the smaller one as the output torque of the whole vehicle.

[0222] In this embodiment, the number of vehicle torque extremes may be at least one. The at least one vehicle torque extreme may include at least one of a first torque extreme, a second torque extreme, and a third torque extreme. The first torque extreme is associated with the current temperature of the drive motor, the second torque extreme is associated with the current speed of the drive motor, and the third torque extreme is associated with the vehicle state. The minimum of the increase torque and the at least one vehicle torque extreme is taken as the output torque of the whole vehicle.

[0223] For example, the vehicle torque extreme value may include a first torque extreme value, a second torque extreme value, and a third torque extreme value. The first torque extreme value, the second torque extreme value, and the third torque extreme value may be obtained; wherein the first torque extreme value is associated with the current temperature of the drive motor, the second torque extreme value is associated with the current speed of the drive motor, and the third torque extreme value is associated with the vehicle state; the smallest of the increase torque, the first torque extreme value, the second torque extreme value, and the third torque extreme value is taken as the output torque of the whole vehicle.

[0224] If so, the resulting output torque matches the vehicle's acceleration request and is not higher than the vehicle torque limit.

[0225] Further, the driving form of the vehicle can be identified; wherein the driving form includes four-wheel drive and two-wheel drive; in response to the driving form of the vehicle being two-wheel drive, the output torque is reduced or the launch mode is disabled.

[0226] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0227] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0228] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A vehicle driving method, characterized in that: The vehicle driving method comprises: Obtaining a power switching instruction, and switching the driving mode of the vehicle to a target driving mode indicated by the power switching instruction; wherein the target driving mode is one of preset driving modes of the vehicle; the preset driving modes include a normal mode, a plurality of first modes, and / or a plurality of second modes, the driving power of the first mode is higher than the driving power of the normal mode, and the driving power of the second mode is lower than the driving power of the normal mode; In response to obtaining a power change request for carrying power demand, controlling the vehicle to respond to the power demand according to a power response rule of the target driving mode; The preset driving mode includes a plurality of first modes, the plurality of first modes include a sport mode and a launch mode, and the power response efficiency of the launch mode is higher than the power response efficiency of the sport mode; The obtaining of the power switching instruction and switching the driving mode of the vehicle to the target driving mode indicated by the power switching instruction comprises: Obtain an ejection command and switch the vehicle's driving mode to an ejection mode; In response to obtaining a power change request for carrying power demand, controlling the vehicle to respond to the power demand according to a power response rule of the target driving mode includes: In response to the acceleration request in the launch mode, evaluating a torque that matches the acceleration request of the vehicle and is not higher than a vehicle torque limit as an output torque; The evaluating of the torque that matches the acceleration request of the vehicle and is not higher than the vehicle torque limit as the output torque includes: Obtaining an initial required torque that matches a vehicle acceleration request; amplifying the initial required torque to obtain an amplified torque that is not less than the initial required torque; The amplified torque is compared with the vehicle torque extreme value, and the smaller one is taken as the output torque of the whole vehicle.

2. The vehicle driving method according to claim 1, characterized in that: The amplifying process of the initial required torque to obtain an amplified torque not less than the initial required torque comprises: Get the vehicle speed and the last output torque; Analyzing a torque gradient that matches the vehicle speed and the previous output torque; Acquire a plurality of preliminary amplifications, take the largest one of the plurality of preliminary amplifications and superimpose it with the previous output torque to form the amplified torque; The plurality of preparatory increases include at least a first preparatory increase and a second preparatory increase, the first preparatory increase being the difference between the initial required torque and the previous output torque, and the second preparatory increase being the torque obtained by weighting the torque gradient using a data period.

3. The vehicle driving method according to claim 1, characterized in that: The vehicle torque extreme value includes a first torque extreme value, a second torque extreme value, and a third torque extreme value; the step of comparing the amplified torque with the vehicle torque extreme value and taking the smaller one as the output torque of the whole vehicle includes: Acquire the first extreme value of the torque, the second extreme value of the torque, and the third extreme value of the torque; wherein the first extreme value of the torque is associated with the current temperature of the drive motor, the second extreme value of the torque is associated with the current speed of the drive motor, and the third extreme value of the torque is associated with the vehicle state; The smallest one among the amplified torque, the first extreme value of the torque, the second extreme value of the torque and the third extreme value of the torque is taken as the output torque of the whole vehicle.

4. The vehicle driving method according to claim 1, characterized in that: The method of switching the driving mode of the vehicle to the ejection mode includes: Get vehicle information; Determining whether the vehicle information meets the prerequisite for starting the ejection mode; In response to meeting the prerequisite for starting the ejection mode, the driving mode is allowed to be switched to the ejection mode.

5. The vehicle driving method according to claim 4, characterized in that: The prerequisites include: the vehicle's power reserve is higher than a reserve threshold, the tire pressures of multiple tires are balanced, the vehicle is in normal condition, there are no obstacles in the global environment within a preset distance from the vehicle body, and whether the number of times the ejection mode is activated in the current vehicle driving cycle is less than a number threshold.

6. The vehicle driving method according to claim 1, characterized in that: The step of switching the driving mode of the vehicle to the ejection mode comprises: Obtain the state of charge of the vehicle's driving battery; Analyzing the power generation of the range extender that matches the state of charge; wherein the state of charge is inversely proportional to the power generation of the range extender; The torque obtained by superimposing the power generated by the power motor on the power generated by the range extender is used as the power source of the vehicle; wherein the power motor is powered by the drive battery.

7. The vehicle driving method according to claim 1, characterized in that: The vehicle driving method further includes: Identifying the driving mode of the vehicle; wherein the driving mode includes four-wheel drive and two-wheel drive; In response to the driving mode of the vehicle being two-wheel drive, the output torque is reduced or the launch mode is disabled.

8. A vehicle, characterized in that: The vehicle comprises: Vehicle body; A vehicle driving device, arranged on the vehicle body, is used to implement the vehicle driving method as described in any one of claims 1-7.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the vehicle driving method according to any one of claims 1 to 7 is implemented.

Images