Vehicle control method and device, electronic equipment and computer readable storage medium

Abstract

The invention relates to the technical field of vehicle control, and discloses a vehicle control method and device, electronic equipment and a computer readable storage medium, and the method comprises the steps: obtaining a vehicle driving scene corresponding to a vehicle in a remaining driving road section; if the vehicle driving scene is the preset driving scene, the required electricity consumption of the vehicle in the remaining driving road section and the current remaining electricity quantity of the battery pack are obtained; if the electric quantity difference value between the current remaining electric quantity and the required electric quantity is smaller than a preset electric quantity value, an initial driving power parameter and a power limiting parameter of a driving motor of the vehicle are obtained, and the initial driving power parameter is corrected through the power limiting parameter to obtain a target driving power parameter; and controlling the driving motor to work according to the target driving power parameter. Therefore, the target power corresponding to the target driving power parameter obtained based on the power limiting parameter is not too large, the power consumption and the oil consumption of the vehicle can be reduced, and the specific requirements of a user for the power consumption and the oil consumption in the preset driving scene are met.

Description

Technical Field

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

[0002] With the development of intelligent driving technology for new energy vehicles, the control of new energy vehicles can be based on driving scenarios, so that the driving state of new energy vehicles is more in line with the specific needs of users in specific driving scenarios, thereby improving the user's driving experience.

[0003] In some fixed driving scenarios, especially commuting to and from get off work, travel time and mileage are relatively stable, but power consumption and fuel consumption are not managed in a refined manner, which cannot meet users' specific needs for fuel consumption and power consumption in these fixed driving scenarios. Summary of the invention

[0004] In view of the above problems, the present application provides a vehicle control method, device, electronic device and computer-readable storage medium, which can reduce the power consumption and fuel consumption of the vehicle and meet the user's specific needs for power consumption and fuel consumption in preset driving scenarios.

[0005] The first aspect of the present application provides a vehicle control method, including: obtaining a vehicle driving scenario corresponding to the vehicle in the remaining driving section; if the vehicle driving scenario is a preset driving scenario, obtaining the required power consumption of the vehicle in the remaining driving section and the current remaining power of the battery pack; if the power difference between the current remaining power and the required power consumption is less than the preset power value, obtaining the initial driving power parameters and power limit parameters of the vehicle's driving motor, and correcting the initial driving power parameters through the power limit parameters to obtain target driving power parameters; controlling the driving motor to operate with the target driving power parameters.

[0006] In some specific embodiments, the steps of obtaining initial driving power parameters and power limiting parameters of a vehicle's driving motor, and correcting the initial driving power parameters by the power limiting parameters to obtain target driving power parameters include: obtaining an initial driving torque and a torque limiting parameter of the vehicle's driving motor; correcting the initial driving torque by the torque limiting parameters to obtain a target torque, and obtaining a target driving power parameter based on the target torque.

[0007] In some specific embodiments, the step of obtaining the torque limit parameters of the vehicle's drive motor includes: obtaining the torque limit coefficient or maximum torque of the vehicle's drive motor based on the charge difference; wherein, the smaller the torque limit coefficient and the maximum torque, the smaller the corresponding charge difference; the step of correcting the initial drive torque by the torque limit parameter to obtain the target torque includes: multiplying the torque limit coefficient by the initial drive torque to obtain the target torque, or using the initial torque as the target torque when the initial drive torque is less than or equal to the maximum torque, or using the maximum torque as the target torque when the initial drive torque is greater than the maximum torque.

[0008] In some specific embodiments, the step of obtaining the torque limitation coefficient or maximum torque of the vehicle's drive motor based on the charge difference includes: obtaining the discharge power limitation coefficient or maximum discharge power corresponding to the vehicle's battery pack based on the charge difference; wherein, the smaller the discharge power limitation coefficient and the maximum discharge power, the smaller the corresponding charge difference; obtaining the torque limitation coefficient of the vehicle's drive motor based on the discharge power limitation coefficient, or obtaining the maximum torque of the drive motor based on the maximum discharge power.

[0009] In some specific embodiments, the steps of obtaining an initial driving power parameter and a power limit parameter of a driving motor of a vehicle, and correcting the initial driving power parameter by the power limit parameter to obtain a target driving power parameter include: obtaining an initial driving speed and a speed limit parameter of the driving motor of the vehicle; correcting the initial driving speed by the speed limit parameter to obtain a target speed, and obtaining a target driving power parameter based on the target speed.

[0010] In some specific embodiments, the step of obtaining the speed limit parameters of the vehicle's drive motor includes: obtaining the maximum speed of the vehicle's drive motor based on the charge difference; wherein the charge difference and the maximum speed have a preset corresponding relationship, and a larger maximum speed corresponds to a larger charge difference; the step of correcting the initial drive speed by the speed limit parameters to obtain the target speed includes: if the initial drive speed is less than or equal to the maximum speed, then using the initial drive speed as the target speed, and if the initial drive speed is greater than the maximum speed, then using the maximum speed as the target speed.

[0011] In some specific embodiments, if the vehicle driving scenario is a preset driving scenario, after the step of obtaining the required power consumption of the vehicle in the remaining driving section and the current remaining power of the battery pack, it includes: if the power difference between the current remaining power and the required power consumption is less than the preset power value, the current power generation power is determined according to the current maximum power generation level allowed by the vehicle and the current vehicle speed; based on the universal characteristics of the vehicle's range extender, the target power point of the range extender that meets the preset oil-to-electricity conversion rate standard under the current power generation power is determined, and the range extender is controlled to operate and generate electricity at the target power point.

[0012] In some specific embodiments, after the step of obtaining the vehicle driving scenario corresponding to the remaining driving section of the vehicle, it includes: if the vehicle driving scenario is a preset driving scenario, obtaining the initial target remaining power corresponding to the current vehicle mode of the vehicle; obtaining the corresponding power correction amount according to the current vehicle mode, and correcting the initial target remaining power based on the power correction amount to obtain a corrected target remaining power; wherein the corrected target remaining power is less than the initial target remaining power; if the current remaining power of the vehicle's battery pack is less than the corrected target remaining power, controlling the vehicle's range extender to generate electricity.

[0013] In some specific embodiments, after the step of obtaining the vehicle driving scenario corresponding to the remaining driving section of the vehicle, the following step is included: if the vehicle driving scenario is a preset driving scenario, then obtaining the initial accessory power and accessory power correction parameters of the electric power accessories of the thermal management system of the vehicle; wherein, there is a corresponding relationship between the accessory power correction parameters and the remaining power of the battery pack, and the lower the remaining power is, the greater the degree of correction of the initial accessory power by the accessory correction parameters; the initial accessory power is corrected by the accessory power correction parameters to obtain the target accessory power, and the electric power accessories are controlled to operate at the target accessory power; wherein, the target accessory power is lower than the initial accessory power.

[0014] The second aspect of the present application provides a vehicle control device, including: an acquisition module, used to acquire a vehicle driving scenario corresponding to the vehicle in the remaining driving section; if the vehicle driving scenario is a preset driving scenario, the required power consumption of the vehicle in the remaining driving section and the current remaining power of the battery pack are acquired; if the power difference between the current remaining power and the required power consumption is less than the preset power value, the initial driving power parameters and power limit parameters of the vehicle's driving motor are acquired; a control module, used to correct the initial driving power parameters through the power limit parameters to obtain target driving power parameters, and control the driving motor to operate with the target driving power parameters.

[0015] A third aspect of the present application provides an electronic device, comprising: a processor; and a memory for storing a computer program, wherein the computer program implements any of the above-mentioned vehicle control methods when executed by the processor.

[0016] A fourth aspect of the present application provides a computer-readable storage medium, in which a computer program is stored. When the computer program is executed by a processor, a vehicle control method as described above is implemented.

[0017] The present application has at least the following beneficial technical effects: Based on the vehicle control method, device, electronic device and computer-readable storage medium provided by the application, the method includes: obtaining the vehicle driving scenario corresponding to the remaining driving section of the vehicle; if the vehicle driving scenario is a preset driving scenario, obtaining the required power consumption of the vehicle in the remaining driving section and the current remaining power of the battery pack; if the power difference between the current remaining power and the required power consumption is less than the preset power value, obtaining the initial driving power parameter and power limit parameter of the vehicle's driving motor, and correcting the initial driving power parameter by the power limit parameter to obtain the target driving power parameter; controlling the driving motor to work with the target driving power parameter. Therefore, the target power corresponding to the target driving power parameter obtained based on the power limit parameter will not be too large, which can reduce the vehicle's power consumption and fuel consumption, and meet the user's specific needs for power consumption and fuel consumption in the preset driving scenario.

[0018] The above description is only an overview of the technical solution of the embodiment of the present application. In order to more clearly understand the technical means of the embodiment of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the embodiment of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are only used to illustrate the embodiments and are not to be considered as limiting the present application. In addition, the same reference symbols are used to represent the same components throughout the accompanying drawings. In the accompanying drawings:

[0020] Figure 1 It is a flow chart of an embodiment of a vehicle control method provided by the present application;

[0021] Figure 2 is a flow chart of another embodiment of the vehicle control method provided by the present application;

[0022] Figure 3 is a flow chart of another embodiment of the vehicle control method provided by the present application;

[0023] Figure 4 is a flow chart of another embodiment of the vehicle control method provided by the present application;

[0024] Figure 5 is a flow chart of another embodiment of the vehicle control method provided by the present application;

[0025] Figure 6 is a flow chart of another embodiment of the vehicle control method provided by the present application;

[0026] Figure 7 is a flow chart of another embodiment of the vehicle control method provided by the present application;

[0027] Figure 8 is a flow chart of another embodiment of the vehicle control method provided by the present application;

[0028] Fig. 9 is a flow chart of another embodiment of the vehicle control method provided by the present application;

[0029] Fig.10 is a structural block diagram of an embodiment of a vehicle control device provided by the present application;

[0030] Fig.11 It is a schematic diagram of the structural framework of an embodiment of the electronic device provided by the present application;

[0031] Fig.12 It is a schematic diagram of the structural framework of an embodiment of the computer-readable storage medium provided by the present application. DETAILED DESCRIPTION

[0032] The exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0033] If there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if the meaning of "and / or" appearing in the full text is to include three parallel schemes, taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0034] A first aspect of the present application provides a vehicle control method, which is applied to new energy vehicles. Figure 1 is a flow chart of an embodiment of the vehicle control method provided by the present application, combined with Figure 1 , the method comprises the following steps:

[0035] S101: Obtain the vehicle driving scene corresponding to the remaining driving section of the vehicle.

[0036] The remaining driving section of the vehicle is the driving section between the current position of the vehicle and the end position, and the relevant parameters of the remaining driving section change as the vehicle travels. The vehicle driving scene can be preset, for example, the vehicle driving scene can include a commuting driving scene, a tourist driving scene, etc., which are not specifically limited here.

[0037] Among them, the vehicle can obtain the vehicle's driving information through automatically acquired navigation information, user input information, etc., and then compare the acquired driving information with the driving information corresponding to the vehicle's driving scene, and then obtain the vehicle's current corresponding driving scene.

[0038] S102: If the vehicle driving scenario is a preset driving scenario, the required power consumption of the vehicle in the remaining driving section and the current remaining power of the battery pack are obtained.

[0039] The preset driving scene is pre-set according to actual needs, and the preset driving scene can be a driving scene that the user often encounters. For example, the preset driving scene can be a commuting driving scene with a fixed route, a business trip driving scene, a recreational driving scene, etc. After obtaining the vehicle driving scene corresponding to the remaining road section, it can be determined by comparison whether the vehicle driving scene is the preset driving scene.

[0040] Among them, for the specific confirmation method of the commuting driving scene, if the driving information obtained is consistent with the driving information corresponding to the commuting driving scene, then the vehicle driving scene of the remaining driving section can be considered to be a commuting driving scene. In some application scenarios, the following schemes can be used to identify whether the vehicle driving scene is a commuting driving scene:

[0041] Solution 1: In the navigation system, you can set your home and company independently. Based on the home and company set by the user, if the current user uses such a starting point and end point after turning on the navigation, the current user's driving scene is considered to be a commuting driving scene.

[0042] Solution 2: If the user navigates multiple times (for example, more than 10 times) from the same starting point to the same destination during working days, the current user driving scenario is considered to be a commuting driving scenario.

[0043] Solution 3: If the user navigates from a certain community to a certain company (for example, more than 10 times), the current user driving scenario is considered to be a commuting driving scenario.

[0044] Solution 4: In the car, AI intelligent voice recognition automatically understands the user’s home and company addresses, and then identifies whether it is a commuting driving scenario.

[0045] It should be understood that when the vehicle is in a commuting driving scenario, users generally require the vehicle to have lower power consumption and fuel consumption, thereby reducing travel costs. Based on this consideration, this embodiment implements specific corrections to the initial driving power parameters of the vehicle according to the power state of the vehicle's battery pack, thereby meeting the actual needs of users.

[0046] In this step, the power consumption required for the vehicle in the remaining driving section and the current remaining power of the battery pack are obtained. The power consumption required for the remaining driving section can be obtained based on the navigation information of the vehicle. The navigation information of the vehicle may include the length of the segment of the remaining driving section, the corresponding vehicle speed and other information, and then the power consumption required for the vehicle is obtained based on this information and the vehicle's own parameters. The current remaining power of the battery pack can be obtained in real time.

[0047] S103: If the difference between the current remaining power and the required power consumption is less than the preset power value, the initial driving power parameter and the power limit parameter of the driving motor of the vehicle are obtained, and the initial driving power parameter is corrected by the power limit parameter to obtain the target driving power parameter.

[0048] Among them, the power difference between the current remaining power and the required power consumption is obtained by subtracting the required power consumption from the current remaining power. When the difference power is equal to 0, it means that the current remaining power is the same as the required power consumption. When the difference power is less than 0, it means that the current remaining power is less than the required power consumption. At this time, if the remaining driving section needs to be completed, the vehicle needs to be charged or the vehicle needs to generate electricity itself. The preset power value can be a smaller power value, such as 5% (as a proportion of the total battery power). When the power difference between the current remaining power and the required power consumption is less than the preset power value, it means that the vehicle cannot complete the remaining driving section without charging or generating electricity, or the remaining power of the vehicle is low after the vehicle completes the remaining driving section.

[0049] In this step, the initial driving power parameters and power limit parameters of the vehicle's driving motor are obtained. The initial driving power parameters of the driving motor can be obtained through the vehicle's original strategy, and the initial driving power parameters may include the initial driving torque and initial driving speed of the driving motor. When the method of the present application is not applied, the vehicle will control the driving motor to operate with the initial driving torque and initial driving speed corresponding to the initial driving power parameters. After applying the method of the present application, the initial driving power parameters will be further corrected by the power limit parameters to obtain the target driving power parameters.

[0050] There may be multiple specific types of power limit parameters, which correspond to various parameters in the initial drive power parameters. For example, power limit parameters corresponding to the initial drive torque and the initial drive speed may be set to limit various parameters in the initial drive power parameters, thereby limiting the drive power.

[0051] In combination with the above content, the initial driving power parameters are corrected by the power limit parameters, that is, the parameters of the corresponding category in the initial driving power parameters are limited by the power limit parameters to achieve correction, and then the target driving power parameters are obtained.

[0052] It should be understood that after the initial driving power is corrected by the power limit parameter, one or more types of parameters in the target driving power parameter will be limited, and the target driving power corresponding to the target driving power parameter will be limited. During vehicle driving, if the driving power of the drive motor is limited, the vehicle can ensure normal driving, but the vehicle's power will be limited, and the vehicle's acceleration performance will be limited, but when driving the same distance, the vehicle's power consumption will be reduced. In extended-range vehicles, since the power consumption is reduced, the range extender can generate less electricity, which will also reduce the vehicle's fuel consumption.

[0053] S104: Control the drive motor to operate at the target drive power parameter.

[0054] After the target driving power parameter is acquired, the vehicle is controlled to operate at the target driving power parameter, thereby limiting the power of the vehicle.

[0055] In summary, through the method provided in the above embodiment, the target power corresponding to the target driving power parameter obtained based on the power limit parameter will not be too large, which can reduce the power consumption and fuel consumption of the vehicle and meet the user's specific needs for power consumption and fuel consumption in commuting scenarios.

[0056] Figure 2 It is a flow chart of another embodiment of the vehicle control method provided by the present application.

[0057] Combination Figure 2 In some specific embodiments, the steps of obtaining an initial driving power parameter and a power limit parameter of a driving motor of a vehicle, and correcting the initial driving power parameter by the power limit parameter to obtain a target driving power parameter include:

[0058] S201: Acquire the initial driving torque and torque limit parameter of the driving motor of the vehicle.

[0059] In this embodiment, the initial driving torque is specifically acquired as the initial driving power parameter, and the torque limit parameter is specifically acquired as the power limit parameter.

[0060] S202: Correcting the initial driving torque by using the torque limit parameter to obtain a target torque, and obtaining a target driving power parameter based on the target torque.

[0061] After the initial driving torque and the torque limit parameter are obtained, the driving torque is corrected to obtain the target torque. At this time, other parameters in the initial driving power parameter may not be corrected, such as the initial driving speed. At this time, the target driving power parameter can be obtained by replacing the initial driving torque in the initial driving power parameter with the target torque.

[0062] Figure 3 It is a flow chart of another embodiment of the vehicle control method provided by the present application.

[0063] Combination Figure 3 In addition to the above, in some specific embodiments, the step of obtaining the torque limit parameter of the driving motor of the vehicle includes:

[0064] S301: Obtaining the torque limit coefficient or maximum torque of the vehicle's driving motor based on the charge difference; wherein, the smaller the torque limit coefficient, the smaller the corresponding charge difference, and the smaller the maximum torque, the smaller the corresponding charge difference.

[0065] The power difference is the power difference between the current remaining power and the required power consumption, and the corresponding relationship between the power difference, the torque limit coefficient and the maximum torque is preset and stored. Multiple non-overlapping preset power difference ranges can be preset, and all preset power difference ranges can constitute a continuous range interval, and different preset power difference ranges correspond to different torque limit coefficients and maximum torques.

[0066] After the power difference is obtained, the corresponding torque limit coefficient or maximum torque can be determined according to the preset power difference range to which the power difference belongs and the corresponding relationship.

[0067] It should be understood that the smaller the torque limit coefficient, the greater the torque limit coefficient has on the torque, and the smaller the maximum torque, the greater the torque limit. When the power difference is small, it means that the remaining power of the battery pack is less than the required power, and the driving power of the drive motor is required to reduce the power consumption of the vehicle to a greater extent. Therefore, a smaller torque limit coefficient and maximum torque are set, thereby limiting the power to a greater extent.

[0068] The step of correcting the initial driving torque by using the torque limit parameter to obtain the target torque includes:

[0069] S302: Multiply the torque limit coefficient by the initial driving torque to obtain a target torque, or use the initial torque as the target torque when the initial driving torque is less than or equal to the maximum torque, or use the maximum torque as the target torque when the initial driving torque is greater than the maximum torque.

[0070] When the torque limit parameter is the torque limit coefficient, the target torque is obtained by multiplying the torque limit coefficient by the initial driving torque. At this time, the smaller the torque limit coefficient is, the smaller the corresponding target torque is.

[0071] When the torque limit parameter is the maximum torque, the initial torque is used as the target torque when the initial driving torque is less than or equal to the maximum torque, or the maximum torque is used as the target torque when the initial driving torque is greater than the maximum torque. That is, the target torque obtained will not exceed the maximum torque, thereby achieving torque limitation. At this time, the smaller the maximum torque, the greater the degree of torque limitation.

[0072] Figure 4 It is a flow chart of another embodiment of the vehicle control method provided by the present application.

[0073] Combination Figure 4 In some specific embodiments, the step of obtaining the torque limit coefficient or the maximum torque of the driving motor of the vehicle based on the power difference includes:

[0074] S401: Obtaining a discharge power limit coefficient or a maximum discharge power corresponding to the battery pack of the vehicle based on the power difference; wherein, the smaller the discharge power limit coefficient, the smaller the corresponding power difference, and the smaller the maximum discharge power, the smaller the corresponding power difference.

[0075] Similarly, the relationship between the power difference and the discharge power limit coefficient and the maximum discharge power can be preset and stored. Multiple non-overlapping preset power difference ranges can be preset, all preset power difference ranges can constitute a continuous range interval, and different preset power difference ranges correspond to different discharge power limit coefficients and maximum discharge powers.

[0076] It should be understood that when the power difference is smaller, the remaining power of the vehicle is less than the required power, and the driving power of the drive motor is smaller at this time to reduce the power consumption of the vehicle to a greater extent. Therefore, a smaller discharge power limit coefficient and maximum discharge power are set at this time, thereby limiting the discharge power of the battery pack to a greater extent, and thus limiting the driving power of the drive motor to a greater extent.

[0077] S402: Obtaining a torque limit coefficient of a driving motor of the vehicle based on a discharge power limit coefficient, or obtaining a maximum torque of the driving motor based on a discharge maximum power.

[0078] It should be understood that based on the initial driving torque and initial driving speed of the driving motor, the initial driving power of the driving motor can be obtained, and combined with the power of the vehicle's accessories, the initial discharge power of the battery pack can be obtained.

[0079] In one embodiment, the target discharge power can be obtained by multiplying the initial discharge power by the discharge power limit coefficient. After obtaining the target discharge power, the target driving power of the drive motor can be obtained based on the accessory power. At this time, the ratio of the target driving power to the initial driving power is used as the torque limit coefficient.

[0080] In another embodiment, the maximum discharge power of the drive motor can be obtained based on the maximum discharge power and the accessory power. After the maximum discharge power of the drive motor is obtained, the maximum torque of the drive motor can be obtained based on the initial drive speed of the drive motor (drive power = drive torque * drive speed).

[0081] It should be understood that, in this embodiment, the maximum torque of the drive motor is obtained specifically through the discharge power limit coefficient or the maximum discharge power of the battery pack.

[0082] Figure 5 It is a flow chart of another embodiment of the vehicle control method provided by the present application.

[0083] Combination Figure 5 In some specific embodiments, the steps of obtaining an initial driving power parameter and a power limit parameter of a driving motor of a vehicle, and correcting the initial driving power parameter by the power limit parameter to obtain a target driving power parameter include:

[0084] S501: Acquire an initial driving speed and a speed limit parameter of a driving motor of a vehicle.

[0085] In this embodiment, specifically, an initial driving rotation speed as an initial driving power parameter is acquired, and a rotation speed limit parameter as a power limit parameter is acquired.

[0086] S502: Correcting the initial driving speed by the speed limit parameter to obtain a target speed, and obtaining a target driving power parameter based on the target speed.

[0087] After the initial driving speed and the speed limit parameter are obtained, the initial driving speed is corrected by the speed limit parameter to obtain the target speed.

[0088] In some application scenarios, the initial driving speed in the initial driving power parameter can be directly replaced by the target speed to obtain the target driving power parameter. In other application scenarios, after replacing the initial driving speed with the target speed, the initial driving torque in the initial driving power parameter can be corrected to obtain the target driving power parameter.

[0089] Figure 6 It is a flow chart of another embodiment of the vehicle control method provided by the present application.

[0090] Combination Figure 6In some specific embodiments, the step of obtaining the speed limit parameter of the driving motor of the vehicle includes:

[0091] S601: Acquire the maximum rotation speed of the vehicle's driving motor based on the power difference; wherein there is a preset corresponding relationship between the power difference and the maximum rotation speed, and a larger maximum rotation speed corresponds to a larger power difference.

[0092] Among them, the preset correspondence between the power difference and the maximum speed is preset and stored, and after the power difference is obtained, the corresponding maximum speed can be obtained through the correspondence. Similarly, multiple non-overlapping preset power difference ranges can be preset, and all preset power difference ranges can constitute a continuous range interval, and different preset power difference ranges correspond to different maximum speeds.

[0093] It should be understood that when the power difference is small, it means that the remaining power of the battery pack is less than the required power, and the driving power of the drive motor is required to be smaller to reduce the power consumption of the vehicle to a greater extent. At this time, a smaller maximum speed will be set to achieve a greater limit on the driving power.

[0094] The step of correcting the initial driving speed by the speed limit parameter to obtain the target speed includes:

[0095] S602: If the initial driving speed is less than or equal to the maximum speed, the initial driving speed is used as the target speed; if the initial driving speed is greater than the maximum speed, the maximum speed is used as the target speed.

[0096] Through this step, the speed limit parameter is used to correct the initial driving speed, so that the target speed does not exceed the maximum speed, thereby limiting the driving power.

[0097] It should be understood that the above embodiment limits the initial driving speed by using the speed limit parameter, which actually achieves the limitation of the vehicle speed.

[0098] Figure 7 It is a flow chart of another embodiment of the vehicle control method provided by the present application.

[0099] Combination Figure 7 In some specific embodiments, if the vehicle driving scenario is a preset driving scenario, after the step of obtaining the required power consumption of the vehicle in the remaining driving section and the current remaining power of the battery pack, that is, after the above step S102, it includes:

[0100] S701: If the difference between the current remaining power and the required power consumption is less than the preset power value, the current power generation power is determined according to the maximum power generation level currently allowed by the vehicle and the current vehicle speed.

[0101] If the difference between the current remaining power and the required power consumption is less than the preset power value, it means that the remaining power of the vehicle is not enough to complete the remaining section, or the remaining power after completing the remaining section will be less. At this time, in order to ensure that the vehicle can complete the remaining section and the battery pack has a relatively healthy power, the vehicle needs to generate electricity. It should be understood that the vehicle is an extended-range vehicle at this time.

[0102] Among them, the maximum power generation level currently allowed by the vehicle is the maximum power generation level that meets various preset conditions in the current state of the vehicle. For example, it is the highest power generation level corresponding to the preset NVH standard in the current state. The vehicle can include multiple power generation levels, and different power generation levels correspond to different degrees of power generation. The higher the power generation level, the greater the corresponding power generation degree. At this time, different power generation levels can correspond to different vehicle speed and power generation power curves. Under the same vehicle speed, a higher power generation level corresponds to a higher power generation power.

[0103] After the power generation level is determined, the power generation power can be directly obtained as the current power generation power according to the corresponding power curve and the current vehicle speed.

[0104] S702: Based on the universal characteristics of the range extender of the vehicle, determine a target power point of the range extender that meets a preset oil-to-electricity conversion rate standard under the current power generation power, and control the range extender to operate and generate electricity at the target power point.

[0105] It should be understood that based on the universal characteristics of the range extender, a power range that meets the preset oil-to-electricity conversion rate standard can be obtained, and the power point includes speed and torque parameters. The preset oil-to-electricity conversion rate standard can correspond to a standard oil-to-electricity conversion rate, and the power point that meets the preset oil-to-electricity conversion rate standard can be a power point where the oil-to-electricity conversion rate is greater than the standard oil-to-electricity conversion rate.

[0106] Through this embodiment, it is possible to generate electricity at a higher level and ensure that the vehicle's oil-to-electricity conversion rate is high, thereby reducing the vehicle's fuel consumption.

[0107] Figure 8 It is a flow chart of another embodiment of the vehicle control method provided by the present application.

[0108] Combination Figure 8 In some specific embodiments, after the step of obtaining the vehicle driving scene corresponding to the remaining driving section of the vehicle, that is, after the above step S101, it includes:

[0109] S801: If the vehicle driving scenario is a preset driving scenario, obtaining an initial target remaining power corresponding to the current vehicle mode of the vehicle.

[0110] Among them, there is a preset correspondence between the vehicle mode and the initial target remaining power. For example, the forced EV mode corresponds to an initial target remaining power of 15%, the pure electric priority mode corresponds to an initial target remaining power of 25%, the automatic mode corresponds to an initial target remaining power of 35%, and the fuel priority mode corresponds to an initial target remaining power of 85%.

[0111] S802: Obtaining a corresponding power correction amount according to the current vehicle mode, and correcting the initial target remaining power based on the power correction amount to obtain a corrected target remaining power; wherein the corrected target remaining power is less than the initial target remaining power.

[0112] Different vehicle modes correspond to different power correction amounts, and the corresponding relationship between the vehicle mode and the power correction amount is preset. After the current vehicle mode is acquired, the power correction amount can be obtained according to the corresponding relationship.

[0113] The higher the initial target remaining power is, the higher the corresponding power correction amount can be, which can correct the initial target remaining power to a greater extent. In some specific embodiments, the initial target remaining power can be corrected by subtracting the power correction amount from the initial target remaining power to obtain the corrected target remaining power.

[0114] The power correction amount corresponding to the vehicle mode can be a fixed value or a value determined according to actual parameters, which is not specifically limited here. The corrected target remaining power obtained by the power correction amount is less than the initial target remaining power, that is, the correction in this embodiment actually reduces the initial target remaining power.

[0115] S803: If the current remaining power of the battery pack of the vehicle is less than the corrected target remaining power, the range extender of the vehicle is controlled to operate to generate electricity.

[0116] After the corrected target remaining power is obtained, it is used as the target remaining power of the battery pack for the vehicle's power generation. That is, as long as the power of the battery pack is lower than the corrected target remaining power, the vehicle's range extender needs to work to generate power.

[0117] Through this embodiment, since the corrected target remaining power is relatively small, the vehicle can generate electricity when the battery pack is low, so that the vehicle uses as much electricity as possible and generates electricity later, thereby making the range extender work less to reduce the vehicle's fuel consumption, thereby reducing the vehicle's driving cost.

[0118] Fig. 9 It is a flow chart of another embodiment of the vehicle control method provided by the present application.

[0119] Combination Fig. 9In some specific embodiments, after the step of obtaining the vehicle driving scene corresponding to the remaining driving section of the vehicle, that is, after the above step S101, it includes:

[0120] S901: If the vehicle driving scenario is a preset driving scenario, the initial accessory power and accessory power correction parameters of the electric power accessories of the vehicle's thermal management system are obtained; wherein the accessory power correction parameters correspond to the remaining power of the battery pack, and the lower the remaining power, the greater the degree of correction of the initial accessory power by the accessory correction parameters.

[0121] Among them, the electric power accessories of the vehicle thermal management system are mainly the compressor of the vehicle's air conditioning system and the PTC in the heating circuit, which consume electric energy when working. During the vehicle's driving, the power of these electric accessories may be relatively large. The initial accessory power is the power of the electric accessories calculated by the original vehicle strategy. In the original vehicle control strategy, the electric accessories will be directly controlled to work at the initial accessory power, but in this embodiment, the initial accessory power needs to be further corrected.

[0122] The accessory power correction parameter may be a correction coefficient, in which case the correction is performed by multiplying the correction coefficient with the initial accessory power. It may also be a power correction value, in which case the initial accessory power may be corrected by adding the power correction value.

[0123] In this embodiment, the lower the remaining power is, the lower the power of the electric accessories is required to reduce the power usage. At this time, the greater the degree of correction of the accessory correction parameter to the initial accessory power, the smaller the target accessory power is, thereby being able to meet the purpose of reducing power usage to a greater extent.

[0124] S902: Correcting the initial accessory power by using the accessory power correction parameter to obtain a target accessory power, and controlling the electric power accessory to operate at the target accessory power; wherein the target accessory power is lower than the initial accessory power.

[0125] In combination with the above content, the final target accessory power is smaller than the initial accessory power. At this time, controlling the electric power accessory to work at the target accessory power can make the power of the point accessory smaller, thereby reducing the use of electricity.

[0126] A second aspect of the present application provides a vehicle control device 20, Fig.10 It is a structural block diagram of an embodiment of the vehicle control device 20 provided in the present application.

[0127] Combination Fig.10The vehicle control device 20 includes an acquisition module 21 and a control module 22. The acquisition module 21 is used to acquire the vehicle driving scene corresponding to the remaining driving section of the vehicle; if the vehicle driving scene is a preset driving scene, the required power consumption of the vehicle in the remaining driving section and the current remaining power of the battery pack are acquired; if the power difference between the current remaining power and the required power consumption is less than the preset power value, the initial driving power parameter and power limit parameter of the vehicle's driving motor are acquired. The control module 22 is used to correct the initial driving power parameter by the power limit parameter to obtain the target driving power parameter, and control the driving motor to work with the target driving power parameter.

[0128] A third aspect of the present application provides an electronic device, comprising: a processor; and a memory for storing a computer program, wherein when the computer program is executed by the processor, the vehicle control method in any of the above embodiments is implemented.

[0129] Fig.11 It is a schematic diagram of the structural framework of an embodiment of the electronic device 500 provided in the present application.

[0130] In some specific embodiments, the electronic device 500 includes a central processing unit (CPU) 501 and a read-only memory (ROM) 502, wherein the CPU 501 is a processor and the ROM 502 is a memory. The CPU 501 can perform various appropriate actions and processes according to the program stored in the ROM 502 or the program loaded from the storage part 508 to the random access memory (RAM) 503, such as executing the method in the above embodiment. In the RAM 503, various programs and data required for system operation are also stored. The CPU 501, the ROM 502 and the RAM 503 are connected to each other via the bus 504. The input / output (I / O) interface 505 is also connected to the bus 504.

[0131] The following components are connected to the I / O interface 505: an input section 506 including a keyboard, a mouse, etc.; an output section 507 including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc.; a storage section 508 including a hard disk, etc.; and a communication section 509 including a network interface card such as a LAN (Local Area Network) card, a modem, etc. The communication section 509 performs communication processing via a network such as the Internet. A drive 510 is also connected to the I / O interface 505 as needed. A removable medium 511, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the drive 510 as needed so that a computer program read therefrom is installed into the storage section 508 as needed.

[0132] In particular, according to an embodiment of the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, an embodiment of the present application includes a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a computer program for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication section 509, and / or installed from a removable medium 511. When the computer program is executed by a central processing unit (CPU) 501, various functions defined in the system of the present application are executed.

[0133] A fourth aspect of the present application provides a computer-readable storage medium 40, Fig.12 It is a schematic diagram of the structural framework of an embodiment of the computer-readable storage medium 40 provided in the present application.

[0134] The computer readable storage medium 40 stores a computer program 41 , and when the computer program 41 is executed by a processor, the vehicle control method in any of the above embodiments is implemented.

[0135] It should be noted that the computer-readable medium 40 shown in the embodiment of the present application can be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. The computer-readable storage medium can be, for example, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples of computer-readable storage media can include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a flash memory, an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present application, a computer-readable storage medium can be any tangible medium containing or storing a program, which can be used by an instruction execution system, device or device or used in combination with it. In the present application, a computer-readable signal medium can include a data signal propagated in a baseband or as a part of a carrier wave, wherein a computer-readable computer program is carried. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. Computer-readable signal media may also be any computer-readable medium other than computer-readable storage media, which may send, propagate, or transmit programs for use by or in conjunction with an instruction execution system, apparatus, or device. The computer program contained on the computer-readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wired, etc., or any suitable combination of the above.

[0136] In summary, based on the vehicle control method, device, electronic device and computer-readable storage medium provided in the application, the method includes: obtaining the vehicle driving scenario corresponding to the remaining driving section of the vehicle; if the vehicle driving scenario is a preset driving scenario, obtaining the required power consumption of the vehicle in the remaining driving section and the current remaining power of the battery pack; if the power difference between the current remaining power and the required power consumption is less than the preset power value, obtaining the initial driving power parameter and power limit parameter of the vehicle's driving motor, and correcting the initial driving power parameter by the power limit parameter to obtain the target driving power parameter; controlling the driving motor to work with the target driving power parameter. Therefore, the target power corresponding to the target driving power parameter obtained based on the power limit parameter will not be too large, which can reduce the vehicle's power consumption and fuel consumption, and meet the user's specific needs for power consumption and fuel consumption in the preset driving scenario.

[0137] The above content is only a preferred exemplary embodiment of the present application and is not intended to limit the implementation scheme of the present application. A person skilled in the art can easily make corresponding changes or modifications based on the main concept and spirit of the present application. Therefore, the scope of protection of the present application shall be based on the scope of protection required by the claims.

Claims

1. A vehicle control method, characterized in that: include: Obtain the vehicle driving scene corresponding to the remaining driving section of the vehicle; If the vehicle driving scenario is a preset driving scenario, obtaining the required power consumption of the vehicle in the remaining driving section and the current remaining power of the battery pack; If the power difference between the current remaining power and the required power consumption is less than a preset power value, an initial driving power parameter and a power limit parameter of the driving motor of the vehicle are obtained, and the initial driving power parameter is corrected by the power limit parameter to obtain a target driving power parameter; The driving motor is controlled to operate at the target driving power parameter.

2. The vehicle control method according to claim 1, characterized in that: The step of obtaining an initial driving power parameter and a power limit parameter of the driving motor of the vehicle, and correcting the initial driving power parameter by the power limit parameter to obtain a target driving power parameter comprises: Acquiring an initial driving torque and a torque limit parameter of a driving motor of the vehicle; The initial driving torque is corrected by the torque limit parameter to obtain a target torque, and a target driving power parameter is obtained based on the target torque.

3. The vehicle control method according to claim 2, characterized in that: The step of obtaining the torque limit parameter of the driving motor of the vehicle comprises: Based on the electric quantity difference, a torque limit coefficient or a maximum torque of the driving motor of the vehicle is obtained; wherein the smaller the torque limit coefficient is, the smaller the corresponding electric quantity difference is; and the smaller the maximum torque is, the smaller the corresponding electric quantity difference is; The step of correcting the initial driving torque by using the torque limit parameter to obtain the target torque comprises: The target torque is obtained by multiplying the torque limit coefficient by the initial driving torque, or the initial torque is used as the target torque when the initial driving torque is less than or equal to the maximum torque, or the maximum torque is used as the target torque when the initial driving torque is greater than the maximum torque.

4. The vehicle control method according to claim 3, characterized in that: The step of obtaining a torque limit coefficient or a maximum torque of a driving motor of the vehicle based on the electric quantity difference includes: Based on the power difference, a discharge power limit coefficient or a discharge maximum power corresponding to the battery pack of the vehicle is obtained; wherein the smaller the discharge power limit coefficient is, the smaller the corresponding power difference is; and the smaller the discharge maximum power is, the smaller the corresponding power difference is; A torque limit coefficient of the driving motor of the vehicle is obtained based on the discharge power limit coefficient, or a maximum torque of the driving motor is obtained based on the discharge maximum power.

5. The vehicle control method according to claim 1, characterized in that: The step of obtaining an initial driving power parameter and a power limit parameter of the driving motor of the vehicle, and correcting the initial driving power parameter by the power limit parameter to obtain a target driving power parameter comprises: Acquiring an initial driving speed and a speed limit parameter of a driving motor of the vehicle; The initial driving speed is corrected by the speed limit parameter to obtain a target speed, and a target driving power parameter is obtained based on the target speed.

6. The vehicle control method according to claim 5, characterized in that: The step of obtaining the speed limit parameter of the driving motor of the vehicle comprises: Based on the power difference, a maximum speed of the driving motor of the vehicle is obtained; wherein there is a preset corresponding relationship between the power difference and the maximum speed, and a larger maximum speed corresponds to a larger power difference; The step of correcting the initial driving speed by the speed limit parameter to obtain the target speed includes: If the initial driving speed is less than or equal to the maximum speed, the initial driving speed is used as the target speed; if the initial driving speed is greater than the maximum speed, the maximum speed is used as the target speed.

7. The vehicle control method according to claim 1, characterized in that: If the vehicle driving scenario is a preset driving scenario, after the step of obtaining the required power consumption of the vehicle in the remaining driving section and the current remaining power of the battery pack, the method includes: If the difference between the current remaining power and the required power consumption is less than the preset power value, the current power generation power is determined according to the maximum power generation level currently allowed by the vehicle and the current vehicle speed; Based on the universal characteristics of the range extender of the vehicle, a target power point of the range extender that meets a preset oil-to-electricity conversion rate standard under the current power generation power is determined, and the range extender is controlled to operate and generate electricity at the target power point.

8. The vehicle control method according to claim 1, characterized in that: After the step of obtaining the vehicle driving scene corresponding to the remaining driving section of the vehicle, the method includes: If the vehicle driving scenario is a preset driving scenario, obtaining an initial target remaining power corresponding to the current vehicle mode of the vehicle; Acquire a corresponding power correction amount according to the current vehicle mode, and correct the initial target remaining power based on the power correction amount to obtain a corrected target remaining power; wherein the corrected target remaining power is less than the initial target remaining power; If the current remaining power of the battery pack of the vehicle is less than the corrected target remaining power, the range extender of the vehicle is controlled to operate to generate electricity.

9. The vehicle control method according to claim 1, characterized in that: After the step of obtaining the vehicle driving scene corresponding to the remaining driving section of the vehicle, the method includes: If the vehicle driving scenario is a preset driving scenario, an initial accessory power and an accessory power correction parameter of an electric power accessory of a thermal management system of the vehicle are obtained; wherein the accessory power correction parameter has a corresponding relationship with the remaining power of a battery pack, and the lower the remaining power is, the greater the degree of correction of the initial accessory power by the accessory correction parameter is; The initial accessory power is corrected by the accessory power correction parameter to obtain a target accessory power, and the electric power accessory is controlled to operate at the target accessory power; wherein the target accessory power is lower than the initial accessory power.

10. A vehicle control device, characterized in that: include: An acquisition module is used to acquire the vehicle driving scene corresponding to the remaining driving section of the vehicle; If the vehicle driving scenario is a preset driving scenario, obtaining the required power consumption of the vehicle in the remaining driving section and the current remaining power of the battery pack; If the power difference between the current remaining power and the required power consumption is less than a preset power value, obtaining an initial driving power parameter and a power limit parameter of a driving motor of the vehicle; The control module is used to correct the initial driving power parameter by using the power limit parameter to obtain a target driving power parameter, and control the driving motor to operate at the target driving power parameter.

11. An electronic device, characterized in that: include: processor; A memory for storing a computer program, wherein the computer program, when executed by the processor, implements the vehicle control method according to any one of claims 1 to 9.

12. A computer-readable storage medium, characterized in that: The storage medium stores a computer program, and when the computer program is executed by a processor, the vehicle control method according to any one of claims 1 to 9 is implemented.

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