Control method and device of vehicle and vehicle

Abstract

The application relates to the technical field of automobiles, in particular to a control method and device of a vehicle and the vehicle, wherein the method comprises the following steps: acquiring a current position of the vehicle; predicting a road condition in a driving direction of the vehicle according to the current position, and judging whether a target road condition exists in the driving direction of the vehicle; when the target road condition exists in the driving direction of the vehicle, controlling a generator of the vehicle to adjust power generation before the vehicle drives into the target road condition. Therefore, the problems that in the prior art, the working state of the generator is usually changed only after the vehicle has driven into an uphill road condition or a downhill road condition, the generator increases the torque consumption of the engine, and the economy and user experience are poor are solved.

Description

Technical Field

[0001] This application relates to the field of automotive technology, and in particular to a vehicle control method, device, and vehicle. Background Technology

[0002] Most vehicles currently use generators and batteries as their power generation and energy storage units. After the vehicle starts, the generator usually serves as the vehicle's power supply unit, consuming the engine's torque to generate electricity to meet the vehicle's power needs.

[0003] However, in related technologies, the generator's operating status is usually adjusted only after the vehicle has entered uphill or downhill conditions, which increases the generator's torque consumption on the engine, increases the vehicle's fuel consumption, reduces the vehicle's economy, and results in a poor user experience. Summary of the Invention

[0004] This application provides a vehicle control method, device, and vehicle to solve the problems in related technologies, such as the generator's operating state usually changing only after the vehicle has entered uphill or downhill road conditions, which increases the generator's torque consumption on the engine, resulting in poor economy and user experience.

[0005] The first aspect of this application provides a vehicle control method, including the following steps: obtaining the current position of the vehicle; predicting the road conditions in the vehicle's driving direction based on the current position, and determining whether there is a target road condition in the vehicle's driving direction; when the target road condition exists in the vehicle's driving direction, controlling the vehicle's generator to adjust its power generation before the vehicle enters the target road condition.

[0006] Optionally, controlling the generator of the vehicle to adjust its power generation before the vehicle enters the target road condition includes: obtaining the current speed of the vehicle; calculating the predicted time for the vehicle to reach the target road condition based on the current position and the current speed; and controlling the generator to adjust its power generation when the predicted time is less than a preset time.

[0007] Optionally, calculating the predicted time for the vehicle to reach the target road condition based on the current location and the current vehicle speed includes: predicting the predicted distance for the vehicle to reach the target road condition based on the current location and the target road condition; and calculating the predicted time based on the current vehicle speed and the predicted distance.

[0008] Optionally, controlling the generator of the vehicle to adjust its power generation before the vehicle enters the target road condition includes: acquiring a current road condition image in the direction of the vehicle's travel; identifying the current road condition image; and controlling the generator to adjust its power generation when the road condition in the direction of the vehicle's travel is identified as the target road condition.

[0009] Furthermore, the target road condition includes uphill road conditions and downhill road conditions. Controlling the generator to adjust the power generation includes: when the target road condition is an uphill road condition, controlling the vehicle's generator to shut down before the vehicle enters the uphill road condition; when the target road condition is a downhill road condition, controlling the generator to start at maximum power generation before the vehicle enters the downhill road condition.

[0010] A second aspect of this application provides a vehicle control device, comprising: an acquisition module for acquiring the current position of the vehicle; a prediction module for predicting road conditions in the vehicle's driving direction based on the current position and determining whether a target road condition exists in the vehicle's driving direction; and a control module for controlling the vehicle's generator to adjust its power generation before the vehicle enters the target road condition when the target road condition exists in the vehicle's driving direction.

[0011] Optionally, the control module is further configured to: acquire the current speed of the vehicle; calculate the predicted time for the vehicle to reach the target road condition based on the current position and the current speed, and control the generator to adjust the power generation when the predicted time is less than a preset time; wherein, calculating the predicted time for the vehicle to reach the target road condition based on the current position and the current speed includes: predicting the predicted distance for the vehicle to reach the target road condition based on the current position and the target road condition; and calculating the predicted time based on the current speed and the predicted distance.

[0012] Optionally, the control module is further configured to: acquire current road condition images in the direction of vehicle travel; identify the current road condition images, and when the road condition in the direction of vehicle travel is identified as the target road condition, control the generator to adjust the power generation.

[0013] Furthermore, the target road condition may include uphill road conditions and downhill road conditions. The control module is further configured to control the generator of the vehicle to shut down before the vehicle enters the uphill road condition when the target road condition is the uphill road condition; and to control the generator to start at maximum power generation before the vehicle enters the downhill road condition when the target road condition is the downhill road condition.

[0014] A third aspect of this application provides a vehicle including a vehicle control device as described in the above embodiments.

[0015] Therefore, this application has at least the following beneficial effects:

[0016] Predictive control of the generator allows for adjustments to its operating state before the vehicle enters uphill or downhill terrain. For example, the generator can be shut off before going uphill and activated to maximum power before going downhill. This effectively reduces the torque consumption of the generator on the engine, improves climbing performance on uphill sections and power generation on downhill sections, lowers overall fuel consumption, and enhances vehicle economy and user experience. This solves the technical problems of related technologies that typically only change the generator's operating state after the vehicle has already entered uphill or downhill terrain, increasing torque consumption and resulting in poor economy and user experience.

[0017] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0019] Figure 1 This is a schematic flowchart of a vehicle control method provided according to an embodiment of this application;

[0020] Figure 2 This is a schematic diagram illustrating the control and power supply methods of the generator when the vehicle is in different road conditions, according to embodiments of this application.

[0021] Figure 3 This is an example diagram of a vehicle control device provided according to an embodiment of this application. Detailed Implementation

[0022] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0023] The following description, with reference to the accompanying drawings, illustrates a vehicle control method, apparatus, and vehicle according to embodiments of this application. Addressing the problem mentioned in the background art that the generator's operating state is typically changed only after the vehicle has entered an uphill or downhill section, increasing torque consumption by the generator and resulting in poor fuel economy and user experience, this application provides a vehicle control method. In this method, the generator can be predictively controlled, changing its operating state before the vehicle enters an uphill or downhill section. For example, the generator can be shut off before going uphill and started at maximum power before going downhill. This effectively reduces the generator's torque consumption by the engine, improves climbing performance on uphill sections and power generation on downhill sections, reduces overall vehicle fuel consumption, and improves overall vehicle economy and user experience. Therefore, this solves the technical problems in related technologies where the generator's operating state is typically changed only after the vehicle has entered an uphill or downhill section, increasing torque consumption by the generator and resulting in poor fuel economy and user experience.

[0024] Specifically, Figure 1 This is a flowchart illustrating a vehicle control method provided in an embodiment of this application.

[0025] like Figure 1 As shown, the vehicle control method includes the following steps:

[0026] In step S101, the current location of the vehicle is obtained.

[0027] In this application, the current location can be obtained in various ways, such as by at least one positioning system such as GPS (Global Positioning System), and no specific limitation is made thereto.

[0028] It is understood that, since the vehicle's current position is related to the predictive control of the generator, the embodiments of this application can first obtain the current position for subsequent predictive control.

[0029] In step S102, the road conditions in the direction of vehicle travel are predicted based on the current location, and it is determined whether there are target road conditions in the direction of vehicle travel.

[0030] The road conditions along the vehicle's direction of travel can include smooth road conditions, uphill road conditions, and downhill road conditions, while the target road conditions can include uphill road conditions and downhill road conditions. These can be specifically set according to the specific needs of predictive control, and are not specifically limited thereto. In the following embodiments, uphill or downhill road conditions as the target road conditions are used as examples for illustration.

[0031] It is understood that the embodiments of this application can use electronic horizon technology and the user's location to predict road conditions in the direction of vehicle travel, and determine whether there are uphill or downhill road conditions, for subsequent predictive control.

[0032] Electronic horizon technology refers to the technology that can use electronic maps (such as high-precision maps) and big data to provide vehicles with beyond-line-of-sight road condition information. Beyond-line-of-sight road condition information includes information beyond the sensor's perception range, such as road (curvature, slope), lane (lane line shape, lane attributes), traffic lights (location, outline), etc.

[0033] The vehicle's driving direction can include the forward direction and the reverse direction. In the following embodiments, the forward direction is taken as an example. For example, the embodiments of this application can use electronic horizon technology and vehicle position to predict road condition information in front of the vehicle.

[0034] In step S103, when there is a target road condition in the direction of vehicle travel, the generator of the vehicle is controlled to adjust the power generation before the vehicle enters the target road condition.

[0035] It is understood that the embodiments of this application can adjust the generator's power output before the vehicle enters the target road conditions, such as turning off the generator or starting the maximum power output. Therefore, the embodiments of this application can take advantage of the electronic horizon to combine terrain and digital map data with sensor data, such as GPS receivers, to achieve predictive control of the generator before the vehicle enters the target road conditions. This enables predictive energy management through electronic horizon technology and vehicle location information, thereby reducing the vehicle's fuel consumption to a certain extent.

[0036] It should be noted that the embodiments of this application can determine whether a vehicle is about to enter the target road condition in a variety of ways, and no specific limitation is made thereto.

[0037] One possible approach is to control the vehicle's generator to adjust its power output before the vehicle enters the target road condition, including: acquiring the vehicle's current speed; calculating the predicted time for the vehicle to reach the target road condition based on the current location and current speed; and controlling the generator to adjust its power output if the predicted time is less than a preset time.

[0038] The preset duration can be set or calibrated according to the actual situation, such as 2s or 1s, without any specific limitation.

[0039] Understandably, the prediction time is determined based on the predicted distance and vehicle speed. Since the distance and vehicle speed will change dynamically, the prediction time is a dynamic value. The smaller the prediction time, the closer the vehicle is to the uphill or downhill section. Therefore, a prediction time less than the preset time can be understood as the vehicle is about to enter the target road condition.

[0040] For example, if the preset duration is 1 second, and the calculated predicted duration is 20 seconds, it means that the vehicle is still some distance away from the uphill section; if the calculated predicted duration is less than 1 second, it means that the vehicle is about to enter the target road condition.

[0041] In this embodiment, the predicted time for a vehicle to reach the target road condition is calculated based on the current location and current speed, including: predicting the predicted distance for the vehicle to reach the target road condition based on the current location and target road condition; and calculating the predicted time based on the current speed and predicted distance.

[0042] It is understandable that the predicted distance refers to the distance between the vehicle and the starting point of the uphill or downhill slope, predicted by combining the vehicle's position and map data; the formula for calculating the prediction time is: prediction time = prediction distance / current vehicle speed.

[0043] As another possible approach, the vehicle's generator is controlled to adjust its power output before the vehicle enters the target road condition. This includes: acquiring an image of the current road condition in the direction the vehicle is traveling; identifying the current road condition image; and controlling the generator to adjust its power output when the road condition in the direction the vehicle is traveling is identified as the target road condition.

[0044] It is understood that the embodiments of this application can also use the vehicle's own sensors to identify road condition images, and the recognition distance of the sensors can be pre-calibrated. For example, the recognition distance can be calibrated to any distance within a range of 10m, such as 9m or 8m. Therefore, if the target road condition is identified in the direction of vehicle travel through image recognition, it can be determined that the vehicle is close to the target road condition and is about to enter the target road condition.

[0045] After identifying that the vehicle is about to enter the target road condition through the above embodiments, in this embodiment of the application, controlling the generator to adjust the power generation includes: when the target road condition is an uphill road condition, controlling the vehicle's generator to shut down before the vehicle enters the uphill road condition; when the target road condition is a downhill road condition, controlling the generator to start the maximum power generation before the vehicle enters the downhill road condition.

[0046] It is understood that the embodiments of this application can shut down the generator power supply system before going uphill, using the battery as the vehicle's only power supply unit, which reduces the generator's consumption of engine torque to a certain extent, thereby reducing engine fuel consumption and improving climbing performance. Before going downhill, the generator torque can be increased to the maximum, that is, the maximum power generation is started, so that the generator can charge the battery to the maximum extent, which can recover downhill energy to the maximum extent, reduce the engine torque required for power generation, reduce engine fuel consumption to a certain extent, reduce overall vehicle fuel consumption, and improve the vehicle's economy and user experience.

[0047] In some embodiments, before obtaining the vehicle's current location, the method further includes: obtaining the current slope of the road conditions where the vehicle is located; determining whether the absolute value of the current slope is less than a preset slope; and obtaining the current location if the absolute value of the current slope is less than the preset slope.

[0048] The preset slope can be set according to the actual situation, such as a preset slope of 3% or 1%, etc., without any specific limitation.

[0049] It is understood that, before executing predictive control of the vehicle, the current road conditions of the vehicle can be determined. If the absolute value of the current slope is less than the preset slope, it means that the current road conditions of the vehicle are stable. Therefore, it is necessary to obtain the current position in order to execute predictive control of the vehicle. If the absolute value of the current slope is greater than or equal to the preset slope, it means that the current road conditions of the vehicle are target road conditions. When the vehicle is already on the target road conditions, predictive control of the vehicle is not executed.

[0050] In some embodiments, this application can not only perform the predictive power management described above, but also perform other power management on the vehicle. For example, if the vehicle is driving on a smooth road, this application can determine whether to start the generator to generate electricity based on the battery power information. For another example, if the vehicle has entered an uphill road condition, i.e. is on an uphill road condition, the generator can be prevented from starting. Thus, this application can prevent the generator from starting before the vehicle goes uphill until the vehicle completes the climb, thereby effectively avoiding the generator consuming the engine torque and improving the climbing performance.

[0051] In this application embodiment, the completion of the hill climb can be detected in various ways. For example, this application embodiment can detect whether the vehicle has traveled to a non-uphill road condition based on the current location and target road conditions. If so, the hill climb is determined to be completed. Another example is that this application embodiment can also collect road condition images in front of the vehicle and identify the road condition images to detect whether the vehicle has traveled to a non-uphill road condition. If so, the hill climb is determined to be completed.

[0052] The following will combine Figure 2 The control and power supply methods of the generator when the vehicle is in different road conditions are described in detail below:

[0053] (1) When the vehicle is driving on a smooth road, the electronic horizon technology is used to predict whether there is an uphill or downhill road ahead. If an uphill road is predicted ahead, the generator can be stopped before the uphill and the battery can be used to supply power.

[0054] (2) When the vehicle is on an uphill road, the generator must not be started and the battery must be used for power supply.

[0055] (3) After the vehicle travels from an uphill road to a smooth road, it can determine whether the generator should start to generate electricity based on the battery power information, and continue to predict whether there is an uphill or downhill road ahead. If it is predicted that there is a downhill road ahead, the generator can be stopped before going downhill. The generator torque can be increased to the maximum so that the generator can charge the battery to the maximum extent.

[0056] (4) When the vehicle is on a downhill road, the generator starts to generate maximum power to charge the battery;

[0057] (5) When the vehicle travels from a downhill road to a smooth road, the generator output is adjusted according to the road conditions ahead, and the vehicle continues to predict whether there are uphill or downhill road conditions ahead.

[0058] According to the vehicle control method proposed in the embodiments of this application, the generator can be predictively controlled to change the working state of the generator before the vehicle enters uphill or downhill conditions. For example, the generator can be turned off before going uphill and started at maximum power before going downhill. This can effectively reduce the torque consumption of the generator on the engine, improve the climbing performance when going uphill and the power generation when going downhill, reduce the fuel consumption of the whole vehicle, and improve the economy and user experience of the whole vehicle.

[0059] Next, the vehicle control device according to an embodiment of this application is described with reference to the accompanying drawings.

[0060] Figure 3 This is a block diagram of a vehicle control device according to an embodiment of this application.

[0061] like Figure 3 As shown, the vehicle control device 10 includes: an acquisition module 100, a prediction module 200, and a control module 300.

[0062] The acquisition module 100 is used to acquire the current position of the vehicle; the prediction module 200 is used to predict the road conditions in the direction of the vehicle's travel based on the current position, and to determine whether there is a target road condition in the direction of the vehicle's travel; the control module 300 is used to control the vehicle's generator to adjust the power generation before the vehicle enters the target road condition when there is a target road condition in the direction of the vehicle's travel.

[0063] In this embodiment, the control module 300 is further configured to: acquire the vehicle's current speed; calculate the predicted time for the vehicle to reach the target road condition based on the current location and current speed, and control the generator to adjust the power generation when the predicted time is less than a preset time; wherein, calculating the predicted time for the vehicle to reach the target road condition based on the current location and current speed includes: predicting the predicted distance for the vehicle to reach the target road condition based on the current location and target road condition; and calculating the predicted time based on the current speed and predicted distance.

[0064] In this embodiment, the control module 300 is further configured to: acquire current road condition images in the vehicle's driving direction; identify the current road condition images; and when the road condition in the vehicle's driving direction is identified as the target road condition, control the generator to adjust the power generation.

[0065] In this embodiment of the application, the target road condition may include uphill road condition and downhill road condition. The control module 300 is further configured to control the vehicle's generator to shut down before the vehicle enters the uphill road condition when the target road condition is uphill road condition; and to control the generator to start the maximum power generation before the vehicle enters the downhill road condition when the target road condition is downhill road condition.

[0066] It should be noted that the foregoing explanation of the vehicle control method embodiment also applies to the vehicle control device of this embodiment, and will not be repeated here.

[0067] According to the vehicle control device proposed in the embodiments of this application, the generator can be predictively controlled to change the working state of the generator before the vehicle enters uphill or downhill conditions. For example, the generator can be turned off before going uphill and started at maximum power before going downhill. This can effectively reduce the torque consumption of the generator on the engine, improve the climbing performance when going uphill and the power generation when going downhill, reduce the fuel consumption of the whole vehicle, and improve the economy and user experience of the whole vehicle.

[0068] Furthermore, this application also provides a vehicle including the control device for the vehicle as described in the above embodiments. This vehicle can perform predictive control of the generator, changing the generator's operating state before the vehicle enters uphill or downhill conditions. For example, the generator can be turned off before going uphill and started at maximum power before going downhill, thereby effectively reducing the generator's torque consumption on the engine, improving climbing performance on uphill sections and power generation on downhill sections, reducing overall vehicle fuel consumption, and improving the vehicle's economy and user experience.

[0069] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0070] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "N" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0071] Any process or method described in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more N executable instructions for implementing custom logic functions or processes, and the scope of the preferred embodiments of this application includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as should be understood by those skilled in the art to which embodiments of this application pertain.

[0072] It should be understood that the various parts of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, the N steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (FPGAs), field-programmable gate arrays (FPGAs), etc.

[0073] Those skilled in the art will understand that all or part of the steps of the methods in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.

Claims

1. A method for controlling a vehicle, characterized in that, Includes the following steps: Get the vehicle's current location; Predict the road conditions in the vehicle's direction of travel based on the current location, and determine whether the target road conditions exist in the vehicle's direction of travel; as well as When the target road condition exists in the direction of travel of the vehicle, the generator of the vehicle is controlled to adjust its power generation before the vehicle enters the target road condition; The target road conditions include uphill and downhill road conditions. Controlling the generator to adjust its power generation includes: When the target road condition is an uphill road condition, the generator of the vehicle is controlled to shut down before the vehicle enters the uphill road condition; When the target road condition is a downhill road condition, the generator is controlled to start at maximum power generation before the vehicle enters the downhill road condition; The method utilizes electronic horizon technology and the vehicle's current position to predict the target road conditions in the vehicle's direction of travel. Specifically, the current speed of the vehicle is obtained; the predicted time for the vehicle to reach the target road conditions is calculated based on the current position and the current speed; and if the predicted time is less than a preset time, the generator is controlled to adjust its power generation.

2. The method according to claim 1, characterized in that, The step of calculating the predicted time for the vehicle to reach the target road condition based on the current location and the current vehicle speed includes: Based on the current location and the target road conditions, predict the distance the vehicle will travel to the target road conditions. The prediction duration is calculated based on the current vehicle speed and the predicted distance.

3. The method according to claim 1, characterized in that, The method of controlling the generator of the vehicle to adjust its power generation before the vehicle enters the target road condition includes: Acquire current road condition images along the vehicle's direction of travel; The system identifies the current road condition image and, when it identifies the road condition in the vehicle's direction of travel as the target road condition, controls the generator to adjust its power output.

4. A vehicle control device, characterized in that, include: The acquisition module is used to obtain the vehicle's current location; The prediction module is used to predict the road conditions in the direction of vehicle travel based on the current location, and to determine whether there are target road conditions in the direction of vehicle travel. as well as The control module is used to control the generator of the vehicle to adjust the power generation before the vehicle enters the target road condition when the target road condition exists in the direction of the vehicle's travel. The target road conditions include uphill and downhill conditions. The control module is further configured to control the vehicle's generator to shut down before the vehicle enters the uphill condition when the target road condition is an uphill condition; and to control the generator to start at maximum power before the vehicle enters the downhill condition when the target road condition is a downhill condition. The control module is further configured to: acquire the current speed of the vehicle; calculate the predicted time for the vehicle to reach the target road condition based on the current position and the current speed, and control the generator to adjust the power generation when the predicted time is less than a preset time; wherein, calculating the predicted time for the vehicle to reach the target road condition based on the current position and the current speed includes: predicting the predicted distance for the vehicle to reach the target road condition based on the current position and the target road condition; calculating the predicted time based on the current speed and the predicted distance; and predicting the target road condition in the vehicle's driving direction using electronic horizon technology and the vehicle's current position.

5. The apparatus according to claim 4, characterized in that, The control module is further used for: The system acquires current road condition images along the vehicle's travel direction; identifies the current road condition images; and when the road condition along the vehicle's travel direction is identified as the target road condition, controls the generator to adjust its power output.

6. A vehicle, characterized in that, Includes the vehicle control device as described in any one of claims 4-5.

Images