Vehicle engine starting method and device, vehicle and storage medium

Abstract

The invention discloses a vehicle engine starting method and device, a vehicle and a storage medium, and relates to the technical field of vehicles. The method comprises the steps that when a hybrid vehicle runs in a pure electric mode, current running parameters of the hybrid vehicle are obtained; according to the current operation parameters, the speed change condition of the hybrid vehicle within a preset time period after the current moment is determined; and under the condition that it is determined that the speed change condition meets the preset condition, an engine of the hybrid vehicle is started, so that the pure electric mode of the hybrid vehicle is switched to a hybrid mode or an engine mode. According to the technical scheme, when the hybrid vehicle runs in the pure electric mode, speed prediction is conducted according to the current running parameters, the engine of the hybrid vehicle is started in advance before the vehicle speed reaches the first speed threshold value needing to be switched from the pure electric mode to the hybrid mode, the mode switching fluency of the hybrid vehicle is improved, and the running stability of the hybrid vehicle is improved.

Description

Technical Field

[0001] Embodiments of the present invention relate to the field of vehicle technology, and in particular, to a vehicle engine starting method, a device, a vehicle, and a storage medium. Background Art

[0002] When the speed of a hybrid vehicle is low, the power demand of the vehicle is relatively small, and the pure electric mode can be used to reduce the operating cost of the vehicle. When the speed is high, the vehicle needs more power to overcome air resistance and maintain high speed. Relying solely on the electric motor cannot meet the high power demand. In addition, when the vehicle is driving at high speed, the electric motor consumes a lot of power. If the pure electric mode is used all the time, the battery power will be quickly consumed, affecting the vehicle's cruising range. Therefore, the hybrid mode can be used to allow the engine to charge the battery while driving the vehicle to maintain the battery power level.

[0003] In the prior art, different vehicle models are configured with different speed thresholds. When the vehicle speed is not greater than the first speed threshold, the pure electric mode can be used. When the vehicle speed is greater than the first speed threshold, the engine can be started to switch the vehicle from the pure electric mode to the hybrid mode or the engine mode. The engine start needs to be achieved by sending a start command to the engine. There is a time lag in the engine responding to the start command, which causes a jamming phenomenon when the vehicle switches from the pure electric mode to the hybrid mode or the engine mode, affecting the user experience. Summary of the invention

[0004] The present invention provides a vehicle engine starting method, a device, a vehicle and a storage medium, so as to realize timely starting of a hybrid vehicle engine and improve the smoothness of mode switching of the hybrid vehicle.

[0005] In a first aspect, an embodiment of the present invention provides a method for starting an engine of a vehicle, comprising:

[0006] When the hybrid vehicle is running in a pure electric mode, obtaining current operating parameters of the hybrid vehicle;

[0007] Determining, according to the current operating parameters, a speed change of the hybrid vehicle within a preset time period after a current moment;

[0008] When it is determined that the speed change meets a preset condition, the engine of the hybrid vehicle is started to switch the hybrid vehicle from the pure electric mode to the hybrid mode or the engine mode.

[0009] The technical solution of the embodiment of the present invention provides a vehicle engine starting method, comprising: when the hybrid vehicle is running in the pure electric mode, obtaining the current operating parameters of the hybrid vehicle; determining the speed change of the hybrid vehicle within a preset time period after the current moment according to the current operating parameters; and starting the engine of the hybrid vehicle when it is determined that the speed change meets the preset conditions, so as to switch the hybrid vehicle from the pure electric mode to the hybrid mode or the engine mode. In the above technical solution, when the hybrid vehicle is running in the pure electric mode, the current operating parameters of the hybrid vehicle are obtained in real time to realize real-time monitoring of the operation of the hybrid vehicle, and the speed change of the hybrid vehicle within a preset time period after the current moment is determined by inputting the current operating parameters into the speed change determination model to realize the prediction of the vehicle speed of the hybrid vehicle. If the speed change of the hybrid vehicle within the preset time period after the current moment meets the preset conditions, the engine of the hybrid vehicle is started, and the engine of the hybrid vehicle is started in advance before the vehicle speed reaches the speed threshold required to switch from the pure electric mode to the hybrid mode, so that the hybrid vehicle can switch from the pure electric mode to the hybrid mode or the engine mode more smoothly, thereby improving the stability of the operation of the hybrid vehicle.

[0010] Furthermore, the current operating parameters include current operating characteristics of the hybrid vehicle at the current moment, average vehicle speed, average accelerator pedal opening, average brake pedal opening, average remaining power, average current at the current time step at the current moment, and at least one of the average vehicle speed and acceleration variance of a preset number of time steps before the current moment.

[0011] Further, determining the speed change of the hybrid vehicle within a preset time period after the current moment according to the current operating parameter includes:

[0012] A speed change of the hybrid vehicle within a first preset number of time steps after a current time step at a current moment is determined according to the current operating parameter.

[0013] Further, determining, according to the current operating parameter, a speed change of the hybrid vehicle within a first preset number of time steps after a current time step at a current moment, includes:

[0014] The current operating parameters are input into a pre-trained speed change determination model, so that the speed change determination model determines the speed change of the hybrid vehicle within a first preset number of time steps after the current time step according to the current operating parameters.

[0015] Further, the preset condition is that the hybrid vehicle accelerates within a target number of time steps after the current time step, and a target speed corresponding to a termination moment of the target number of time steps after the current time step is greater than a preset speed, wherein the target number is less than the first preset number; or, the hybrid vehicle accelerates within a first preset number of time steps after the current time step, and the vehicle speed is greater than the preset speed in at least a preset proportion of the first preset number of time steps.

[0016] Further, when it is determined that the speed change condition satisfies a preset condition, starting the engine of the hybrid vehicle includes:

[0017] When it is determined that the speed change conditions within a first preset number of time steps satisfy the preset condition after a second preset number of consecutive time steps, the engine of the hybrid vehicle is started at a start time of a next time step.

[0018] Furthermore, the training process of the speed change determination model includes:

[0019] Obtaining historical operating parameters of the hybrid vehicle at each historical time step within a historical time period;

[0020] determining, according to the historical operating parameters of each of the historical time steps, a real speed change of the hybrid vehicle within a first preset number of time steps after each of the historical time steps;

[0021] The speed change determination model is obtained by performing network training using the historical operating parameters of the hybrid vehicle corresponding to the historical time step as training input and the actual speed change of the hybrid vehicle within a first preset number of time steps after the historical time step as training output to guide training.

[0022] In a second aspect, an embodiment of the present invention further provides an engine starting device for a vehicle, comprising:

[0023] An acquisition module, used for acquiring current operating parameters of the hybrid vehicle when the hybrid vehicle is running in a pure electric mode;

[0024] a determination module, configured to input the current operating parameters into a pre-trained speed change determination model, so that the speed change determination model determines the speed change of the hybrid vehicle within a preset time period after a current moment according to the current operating parameters;

[0025] The execution module is used to start the engine of the hybrid vehicle and switch the hybrid vehicle from the pure electric mode to the hybrid mode if the speed change meets the preset acceleration condition.

[0026] In a third aspect, an embodiment of the present invention further provides a vehicle, the vehicle comprising:

[0027] at least one processor; and a memory communicatively coupled to the at least one processor;

[0028] Wherein, the memory stores a computer program that can be executed by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the vehicle engine starting method as described in any one of the first aspects.

[0029] In a fourth aspect, an embodiment of the present invention further provides a storage medium comprising computer executable instructions, wherein the computer executable instructions, when executed by a computer processor, are used to execute a vehicle engine starting method as described in any one of the first aspects.

[0030] In a fifth aspect, the present application provides a computer program product, which includes computer instructions. When the computer instructions are executed on a computer, the computer executes the vehicle engine starting method provided in the first aspect.

[0031] It should be noted that the above-mentioned computer instructions may be stored in whole or in part on a computer-readable storage medium. The computer-readable storage medium may be packaged together with the processor of the engine starting device of the vehicle, or may be packaged separately from the processor of the engine starting device of the vehicle, and this application does not limit this.

[0032] The description of the second, third, fourth and fifth aspects in this application can refer to the detailed description of the first aspect; and the beneficial effects of the description of the second, third, fourth and fifth aspects can refer to the beneficial effect analysis of the first aspect, which will not be repeated here.

[0033] In this application, the name of the vehicle engine starting device does not limit the device or functional module itself. In actual implementation, these devices or functional modules may appear with other names. As long as the functions of each device or functional module are similar to those of this application, they fall within the scope of the claims of this application and their equivalent technologies.

[0034] These and other aspects of the present application will become more apparent from the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0036] Figure 1 A flow chart of a vehicle engine starting method provided by an embodiment of the present invention;

[0037] Figure 2 A flowchart of another vehicle engine starting method provided by an embodiment of the present invention;

[0038] Figure 3 A schematic structural diagram of an engine starting device for a vehicle provided by an embodiment of the present invention;

[0039] Figure 4 A schematic structural diagram of a vehicle provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0040] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0041] The term "and / or" in this article is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone.

[0042] The terms "first" and "second" and the like in the specification and drawings of this application are used to distinguish different objects, or to distinguish different processing of the same object, rather than to describe a specific order of objects.

[0043] In addition, the terms "including" and "having" and any variations thereof mentioned in the description of the present application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include other steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products or devices.

[0044] It should be mentioned before discussing exemplary embodiments in more detail that some exemplary embodiments are described as processes or methods depicted as flow charts. Although the flow charts describe various operations (or steps) as sequential processes, many operations therein can be implemented in parallel, concurrently or simultaneously. In addition, the order of various operations can be rearranged. The process can be terminated when its operation is completed, but can also have additional steps not included in the accompanying drawings. The process can correspond to methods, functions, procedures, subroutines, subprograms, etc. In addition, the embodiments in the present invention and the features in the embodiments can be combined with each other without conflict.

[0045] It should be noted that, in the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0046] In the description of the present application, unless otherwise specified, “plurality” means two or more.

[0047] When a hybrid vehicle is driving at a low speed, it can run in pure electric mode; when the vehicle speed is greater than the first speed threshold, if it continues to run in pure electric mode, it will result in high power consumption and increased operating costs, so it can run in hybrid mode; when the vehicle speed is greater than the second speed threshold, the power is less than the power threshold, or it is running in extreme conditions, the vehicle can run in engine mode. Therefore, when the vehicle speed is greater than the first speed threshold, it is necessary to switch from pure electric mode to hybrid mode or engine mode. Switching from pure electric mode to hybrid mode or engine mode requires starting the engine by sending a start command to the engine. The time lag of the engine responding to the start command will cause the vehicle to freeze when switching from pure electric mode to hybrid mode or engine mode.

[0048] Therefore, the present application proposes a vehicle engine starting method, which starts the engine by predicting the vehicle speed to avoid stalling when the hybrid vehicle switches modes.

[0049] The vehicle engine starting method proposed in the present application will be described in detail below with reference to the drawings and embodiments.

[0050] Figure 1 A flow chart of a vehicle engine starting method provided in an embodiment of the present invention. This embodiment is applicable to situations where the mode switching smoothness of a hybrid vehicle needs to be improved. The method can be executed by an engine starting device of the vehicle, such as Figure 1 As shown, the specific steps include:

[0051] Step 110: When the hybrid vehicle is running in a pure electric mode, obtain current operating parameters of the hybrid vehicle.

[0052] In order to solve the jamming phenomenon that occurs when a hybrid vehicle switches from pure electric mode to hybrid mode or engine mode, the vehicle speed of the hybrid vehicle can be predicted to start the engine before the vehicle speed reaches a first speed threshold, thereby improving the smoothness of the vehicle switching from pure electric mode to hybrid mode or engine mode.

[0053] Specifically, the time step for vehicle speed prediction can be set according to actual needs, for example, it can be set to 10ms, so the vehicle speed prediction is performed every 10ms after the vehicle switches to the pure electric mode. The vehicle speed prediction of the hybrid vehicle needs to be based on the current operating parameters of the hybrid vehicle. Therefore, when the hybrid vehicle is running in the pure electric mode, the current operating parameters of the hybrid vehicle can be continuously obtained. The current operating parameters may include at least one of the current operating condition characteristics, vehicle speed, acceleration, accelerator pedal opening, brake pedal opening, remaining power, and current at the current moment. The operating condition characteristics may include power performance related characteristics, fuel economy related characteristics, handling stability related characteristics, and environmental adaptability related characteristics. Therefore, the current operating condition characteristics can be obtained based on the environmental sensor and the vehicle control system, the vehicle speed can be obtained based on the speed sensor, the acceleration can be obtained based on the acceleration sensor, the accelerator pedal opening and the brake pedal opening can be obtained based on the pedal sensor, the remaining power can be obtained based on the vehicle control system, and the current can be obtained based on the current sensor.

[0054] In the embodiment of the present invention, when the hybrid vehicle is running in the pure electric mode, the current operating parameters of the hybrid vehicle are obtained.

[0055] Step 120: Determine a speed change of the hybrid vehicle within a preset time period after the current moment according to the current operating parameters.

[0056] The current operating parameters of the hybrid vehicle can reflect the speed change trend of the hybrid vehicle. Therefore, the speed change of the hybrid vehicle within a preset time period after the current moment can be determined according to the current operating parameters.

[0057] Specifically, the current operating parameters may be input into a pre-trained speed change determination model, and the speed change determination model may determine the speed change of the hybrid vehicle within a preset time period after the current moment according to the current operating parameters.

[0058] It should be noted that the speed change determination model is obtained by training a network model based on the historical operating parameters corresponding to each historical moment in the historical time period and the speed change of the hybrid vehicle after a preset time period corresponding to each historical moment. After the operating parameters of the hybrid vehicle are input into the speed change determination model, the speed change determination model can output the speed change within a preset time period after the moment of obtaining the operating data.

[0059] In addition, the speed change of the hybrid vehicle within the preset time period after the current moment may include the speed of the hybrid vehicle at each moment within the preset time period after the current moment, so as to predict the speed of the hybrid vehicle.

[0060] In the embodiment of the present invention, by inputting the current operating parameters into the speed change determination model, the speed change of the hybrid vehicle within a preset time period after the current moment is determined, thereby realizing the prediction of the vehicle speed of the hybrid vehicle.

[0061] Step 130: When it is determined that the speed change meets a preset condition, start the engine of the hybrid vehicle to switch the hybrid vehicle from the pure electric mode to the hybrid mode or the engine mode.

[0062] The preset condition may be that the vehicle accelerates and the target speed reached is greater than a preset speed. The preset speed is less than a first speed threshold for the hybrid vehicle to switch from the pure electric mode to the hybrid mode.

[0063] Specifically, after determining the speed change of the hybrid vehicle within a preset time period after the current moment, the speed change trend and the target speed to which the vehicle is accelerated can be determined. If the speed change trend is continuous acceleration or maintenance after acceleration, and the target speed is greater than the preset speed, it can be determined that the vehicle speed may reach a first speed threshold that requires switching from pure electric mode to hybrid mode. Therefore, the engine can be started to switch the hybrid vehicle from pure electric mode to hybrid mode, thereby pre-starting the engine before the hybrid vehicle speed reaches the first speed threshold that requires switching from pure electric mode to hybrid mode, so that the hybrid vehicle can switch from pure electric mode to hybrid mode or engine mode more smoothly, thereby improving the smoothness of switching the hybrid vehicle from pure electric mode to hybrid mode.

[0064] Of course, after the vehicle's engine is started, the hybrid vehicle immediately switches from pure electric mode to hybrid mode or engine mode.

[0065] In addition, if the target speed is greater than the first speed threshold and not greater than the second speed threshold, the battery charge is not less than the charge threshold and the vehicle is operating under normal conditions, the hybrid vehicle is switched from the pure electric mode to the hybrid mode; if the target speed is greater than the second speed threshold, the battery charge is less than the charge threshold or the vehicle is operating under extreme conditions, the hybrid vehicle is switched from the pure electric mode to the engine mode.

[0066] In the embodiment of the present invention, when it is determined that the speed change of the hybrid vehicle within a preset time period after the current moment meets the preset conditions, the engine of the hybrid vehicle is started to achieve pre-start of the engine, thereby improving the smoothness of the hybrid vehicle mode switching and further improving the stability of the hybrid vehicle operation.

[0067] The engine starting method of a vehicle provided by an embodiment of the present invention comprises: when the hybrid vehicle is running in the pure electric mode, obtaining the current operating parameters of the hybrid vehicle; determining the speed change of the hybrid vehicle within a preset time period after the current moment according to the current operating parameters; and starting the engine of the hybrid vehicle when it is determined that the speed change meets the preset conditions, so as to switch the hybrid vehicle from the pure electric mode to the hybrid mode or the engine mode. In the above technical solution, when the hybrid vehicle is running in the pure electric mode, the current operating parameters of the hybrid vehicle are obtained in real time to realize real-time monitoring of the operation of the hybrid vehicle, and the speed change of the hybrid vehicle within a preset time period after the current moment is determined by inputting the current operating parameters into the speed change determination model to realize the prediction of the vehicle speed of the hybrid vehicle. If the speed change of the hybrid vehicle within the preset time period after the current moment meets the preset conditions, the engine of the hybrid vehicle is started, and the engine of the hybrid vehicle is started in advance before the vehicle speed reaches the first speed threshold required to switch from the pure electric mode to the hybrid mode, so that the hybrid vehicle can switch from the pure electric mode to the hybrid mode or the engine mode more smoothly, thereby improving the stability of the operation of the hybrid vehicle.

[0068] Figure 2 This is a flow chart of another vehicle engine starting method provided by an embodiment of the present invention. This embodiment is specific based on the above embodiment. Figure 2 As shown, in this embodiment, the method may further include:

[0069] Step 210: When the hybrid vehicle is running in the pure electric mode, obtain the current operating parameters of the hybrid vehicle.

[0070] Among them, the current operating parameters include the current operating conditions of the hybrid vehicle at the current moment, the average vehicle speed, average accelerator pedal opening, average brake pedal opening, average remaining power, average current at the current time step at the current moment, and at least one of the average vehicle speed and acceleration variance of a preset number of time steps before the current moment.

[0071] The operating characteristics of a hybrid vehicle may include characteristics related to power performance, fuel economy, handling stability, and environmental adaptability. Characteristics related to power performance may include acceleration performance, maximum vehicle speed, and gradeability. Characteristics related to fuel economy may include urban fuel consumption, high-speed fuel consumption, and comprehensive fuel consumption. Characteristics related to handling stability may include steering response, suspension comfort, and braking performance. Characteristics related to environmental adaptability may include high temperature adaptability, low temperature adaptability, and adaptability to adverse road conditions.

[0072] Specifically, the real-time vehicle speed at the current moment is obtained in real time based on the speed sensor, the real-time accelerator pedal opening and the real-time brake pedal opening at the current moment are obtained in real time based on the pedal sensor, the real-time remaining power at the current moment is obtained in real time based on the vehicle control system, and the real-time current at the current moment is obtained in real time based on the current sensor. The average vehicle speed is determined according to the real-time vehicle speed at each moment of the current time step at the current moment, the average accelerator pedal opening is determined according to the real-time accelerator pedal opening at each moment of the current time step at the current moment, the average brake pedal opening is determined according to the real-time brake pedal opening at each moment of the current time step at the current moment, the average brake pedal opening is determined according to the real-time brake pedal opening at each moment of the current time step at the current moment, the average remaining power is determined according to the real-time remaining power at each moment of the current time step at the current moment, and the average current is determined according to the real-time current at each moment of the current time step at the current moment. The average vehicle speed is determined according to the real-time vehicle speed at each moment of a preset number of time steps before the current moment, and the acceleration variance is determined according to the real-time acceleration at each moment of a preset number of time steps before the current moment.

[0073] In the embodiment of the present invention, when the hybrid vehicle is running in the pure electric mode, the current operating parameters of the hybrid vehicle are obtained.

[0074] Step 220: Determine, based on the current operating parameters, a speed change of the hybrid vehicle within a first preset number of time steps after a current time step at a current moment.

[0075] Specifically, the time step for vehicle speed prediction can be 10ms, and the vehicle speed prediction is performed every 10ms after the vehicle switches to the pure electric mode. Therefore, the current operating parameters can be understood as the operating parameters of the current time step at the current moment. Based on the current operating parameters of the hybrid vehicle, the speed change of the hybrid vehicle within the first preset number of time steps after the current time step at the current moment can be predicted. The first preset number can be set according to actual needs, for example, it can be set to 10, that is, the speed change of 10 time steps after the current time step can be predicted based on the current operating parameters obtained at the current time step at the current moment.

[0076] Furthermore, in one implementation, step 220 may specifically include:

[0077] The current operating parameters are input into a pre-trained speed change determination model, so that the speed change determination model determines the speed change of the hybrid vehicle within a first preset number of time steps after the current time step according to the current operating parameters.

[0078] Specifically, the current operating parameters obtained at the current time step at the current moment can be input into a pre-trained speed change determination model. The speed change determination model can determine the speed change of the first preset number of time steps after the current time step based on the current operating parameters obtained at the current time step at the current moment.

[0079] Furthermore, the training process of the speed change determination model includes:

[0080] Acquire historical operating parameters of the hybrid vehicle at each historical time step within a historical time period; determine the actual speed change of the hybrid vehicle within a first preset number of time steps after each historical time step according to the historical operating parameters of each historical time step; perform network training using the historical operating parameters of the hybrid vehicle corresponding to the historical time step as training input and using the actual speed change of the hybrid vehicle within the first preset number of time steps after the historical time step to guide training output, so as to obtain the speed change determination model.

[0081] The actual speed change of the hybrid vehicle within the first preset number of time steps after each historical time step can be reflected by the actual speed of the hybrid vehicle within each of the first preset number of time steps after each historical time step.

[0082] The historical operating parameters of the hybrid vehicle are obtained at each historical time step within the historical time period, and for each historical time step, the actual speed of each time step of the first preset number after the historical time step is determined; the historical operating parameters of the hybrid vehicle corresponding to each historical time step and the actual speed of the hybrid vehicle corresponding to each time step of the first preset number after each historical time step are input into the network model as input information, and after the predicted speed of each time step of the first preset number after each historical time step is determined according to the historical operating parameters corresponding to each historical time step, a loss function is determined according to the predicted speed and the actual speed of each time step of the first preset number after each historical time step determined by the historical operating parameters corresponding to each historical time step, and the model is optimized based on the loss function until the loss function converges to obtain a speed change determination model.

[0083] In an embodiment of the present invention, by inputting the current operating parameters obtained at the current time step at the current moment into the speed change determination model, the speed change of the first preset number of time steps after the current time step is determined, thereby realizing the prediction of the hybrid vehicle speed.

[0084] Step 230: When it is determined that the speed change conditions within a first preset number of time steps after a second preset number of consecutive time steps all meet the preset condition, start the engine of the hybrid vehicle at the start time of the next time step.

[0085] On the one hand, the preset condition is that the hybrid vehicle accelerates within a target number of time steps after the current time step, and a target speed corresponding to a termination moment of the target number of time steps after the current time step is greater than a preset speed, wherein the target number is less than the first preset number.

[0086] If the speed change trend in the target number of time steps after the second preset number of time steps is continuous acceleration or maintenance after acceleration, and the target speed corresponding to the end time of the target number of time steps is greater than the preset speed, it can be determined that the speed change meets the preset conditions. Therefore, the engine can be started at the start time of the next time step to switch the hybrid vehicle from pure electric mode to hybrid mode.

[0087] The specific values ​​of the second preset number and the target number can be set according to actual needs. For example, the second preset number and the target number are both set to 3. If it is determined that the speed change trend in the three time steps after three consecutive time steps is continuous acceleration or maintenance after acceleration, and the target speed corresponding to the end time of the three time steps is greater than the preset speed, it can be determined that the speed change meets the preset conditions.

[0088] On the other hand, the preset condition is that the hybrid vehicle accelerates within a first preset number of time steps after the current time step and the vehicle speed within a preset proportion of the first preset number of time steps is greater than a preset speed.

[0089] If the speed change trend in the first preset number of time steps after the current time step is continuous acceleration or maintenance after acceleration, and the vehicle speed in the first preset number of time steps of a preset proportion is greater than the preset speed, it can be determined that the speed change meets the preset condition. Therefore, the engine can be started at the start time of the next time step to switch the hybrid vehicle from pure electric mode to hybrid mode.

[0090] The specific value of the preset ratio can be set according to actual needs. For example, the preset ratio is set to 50%. After determining that the speed change trend in 10 time steps after 3 consecutive time steps is continuous acceleration or maintained after acceleration, and the vehicle speed in at least 5 time steps is greater than the preset speed, it can be determined that the speed change meets the preset conditions.

[0091] It should be noted that the vehicle speed here can be the maximum speed within the time step or the average speed within the time step.

[0092] In the embodiment of the present invention, when it is determined that the speed change within the first preset number of time steps after the second preset number of consecutive time steps all meet the preset conditions, the engine of the hybrid vehicle is started at the starting moment of the next time step, so as to achieve pre-starting of the engine before the hybrid vehicle speed reaches the speed threshold required to switch from the pure electric mode to the hybrid mode, thereby improving the smoothness of the hybrid vehicle mode switching and further improving the stability of the hybrid vehicle operation.

[0093] A vehicle engine starting method provided by an embodiment of the present invention includes: when a hybrid vehicle is running in a pure electric mode, obtaining current operating parameters of the hybrid vehicle; determining, based on the current operating parameters, a speed change of the hybrid vehicle within a first preset number of time steps after a current time step at a current moment; and starting the engine of the hybrid vehicle at a start time of a next time step when it is determined that the speed change within a first preset number of time steps after a second preset number of consecutive time steps all meet the preset conditions. According to the above technical solution, when the hybrid vehicle is running in the pure electric mode, the current operating parameters of the hybrid vehicle are obtained in real time to realize real-time monitoring of the operation of the hybrid vehicle. By inputting the current operating parameters obtained at the current time step into the speed change determination model, the speed change of the first preset number of time steps after the current time step is determined, and the speed of the hybrid vehicle is predicted. If the speed change of the hybrid vehicle within the first preset number of time steps after each of the second preset number of time steps continuously meets the preset conditions, the engine of the hybrid vehicle is started at the starting time of the next time step, and the engine of the hybrid vehicle is started in advance before the vehicle speed reaches the first speed threshold required to switch from the pure electric mode to the hybrid mode, so that the hybrid vehicle can switch from the pure electric mode to the hybrid mode or the engine mode more smoothly, thereby improving the stability of the operation of the hybrid vehicle and reducing the operation cost of the hybrid vehicle.

[0094] Figure 3The present invention provides a schematic diagram of the structure of a vehicle engine starting device, which can be applied to situations where the mode switching stability of a hybrid vehicle needs to be improved. The device can be implemented by software and / or hardware and is generally integrated in a hybrid vehicle.

[0095] like Figure 3 As shown, the device comprises:

[0096] An acquisition module 310 is used to acquire current operating parameters of the hybrid vehicle when the hybrid vehicle is running in a pure electric mode;

[0097] A determination module 320, configured to input the current operating parameters into a pre-trained speed change determination model, so that the speed change determination model determines the speed change of the hybrid vehicle within a preset time period after a current moment according to the current operating parameters;

[0098] The execution module 330 is configured to start the engine of the hybrid vehicle and switch the hybrid vehicle from the pure electric mode to the hybrid mode if the speed change condition satisfies a preset acceleration condition.

[0099] The engine starting device of the vehicle provided in this embodiment obtains the current operating parameters of the hybrid vehicle when the hybrid vehicle is running in the pure electric mode; determines the speed change of the hybrid vehicle within a preset time period after the current moment according to the current operating parameters; and starts the engine of the hybrid vehicle when it is determined that the speed change meets the preset conditions, so as to switch the hybrid vehicle from the pure electric mode to the hybrid mode or the engine mode. In the above technical solution, when the hybrid vehicle is running in the pure electric mode, the current operating parameters of the hybrid vehicle are obtained in real time to realize real-time monitoring of the operation of the hybrid vehicle, and the speed change of the hybrid vehicle within a preset time period after the current moment is determined by inputting the current operating parameters into the speed change determination model to realize the prediction of the vehicle speed of the hybrid vehicle. If the speed change of the hybrid vehicle within the preset time period after the current moment meets the preset conditions, the engine of the hybrid vehicle is started, and the engine of the hybrid vehicle is started in advance before the vehicle speed reaches the speed threshold required to switch from the pure electric mode to the hybrid mode, so that the hybrid vehicle can switch from the pure electric mode to the hybrid mode or the engine mode more smoothly, thereby improving the stability of the operation of the hybrid vehicle.

[0100] In one embodiment, the current operating parameters include the current operating characteristics of the hybrid vehicle at the current moment, the average vehicle speed, average accelerator pedal opening, average brake pedal opening, average remaining power, average current at the current time step at the current moment, and at least one of the average vehicle speed and acceleration variance of a preset number of time steps before the current moment.

[0101] In one embodiment, the preset condition is that the hybrid vehicle accelerates within a target number of time steps after the current time step, and a target speed corresponding to a termination moment of the target number of time steps after the current time step is greater than a preset speed, wherein the target number is less than the first preset number; or, the hybrid vehicle accelerates within a first preset number of time steps after the current time step, and the vehicle speed is greater than the preset speed in at least a preset proportion of the first preset number of time steps.

[0102] Based on the above embodiment, the determination module 320 is specifically used for:

[0103] A speed change of the hybrid vehicle within a first preset number of time steps after a current time step at a current moment is determined according to the current operating parameter.

[0104] In one implementation, determining the speed change of the hybrid vehicle within a first preset number of time steps after the current time step at the current moment according to the current operating parameter includes:

[0105] The current operating parameters are input into a pre-trained speed change determination model, so that the speed change determination model determines the speed change of the hybrid vehicle within a first preset number of time steps after the current time step according to the current operating parameters.

[0106] Furthermore, the training process of the speed change determination model includes:

[0107] Acquire historical operating parameters of the hybrid vehicle at each historical time step within a historical time period; determine the actual speed change of the hybrid vehicle within a first preset number of time steps after each historical time step according to the historical operating parameters of each historical time step; perform network training using the historical operating parameters of the hybrid vehicle corresponding to the historical time step as training input and using the actual speed change of the hybrid vehicle within the first preset number of time steps after the historical time step to guide training output, so as to obtain the speed change determination model.

[0108] Based on the above embodiment, the execution module 330 is specifically used for:

[0109] When it is determined that the speed change within a first preset number of time steps after a second preset number of consecutive time steps meets the preset condition, the engine of the hybrid vehicle is started at the start time of the next time step to switch the hybrid vehicle from the pure electric mode to the hybrid mode or the engine mode.

[0110] The vehicle engine starting device provided in the embodiment of the present invention can execute the vehicle engine starting method provided in any embodiment of the present invention, and has corresponding functional modules and beneficial effects for executing the vehicle engine starting method.

[0111] It is worth noting that in the embodiment of the engine starting device of the above-mentioned vehicle, the various units and modules included are only divided according to functional logic, but are not limited to the above-mentioned division, as long as the corresponding functions can be achieved; in addition, the specific names of the functional units are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of the present invention.

[0112] Figure 4 A schematic structural diagram of a vehicle provided in an embodiment of the present invention. Figure 4 A block diagram of an exemplary vehicle 4 suitable for implementing embodiments of the present invention is shown. Figure 4 The vehicle 4 shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present invention.

[0113] like Figure 4 As shown, the vehicle 4 is embodied in the form of a general purpose computing electronic device. The components of the vehicle 4 may include, but are not limited to: one or more processors or processing units 16, a system memory 28, and a bus 18 connecting various system components (including the system memory 28 and the processing unit 16).

[0114] Bus 18 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, a processor or a local bus using any of a variety of bus architectures. By way of example, these architectures include, but are not limited to, an Industry Standard Architecture (ISA) bus, a Micro Channel Architecture (MAC) bus, an Enhanced ISA bus, a Video Electronics Standards Association (VESA) local bus, and a Peripheral Component Interconnect (PCI) bus.

[0115] The vehicle 4 typically includes a variety of computer system readable media. These media can be any available media that can be accessed by the vehicle 4, including volatile and non-volatile media, removable and non-removable media.

[0116] The system memory 28 may include computer system readable media in the form of volatile memory, such as random access memory (RAM) 30 and / or cache memory 32. The vehicle 4 may further include other removable / non-removable, volatile / non-volatile computer system storage media. By way of example only, the storage system 34 may be used to read and write non-removable, non-volatile magnetic media ( Figure 4 not shown, usually called a "hard drive"). Although Figure 4Not shown in the figure, a disk drive for reading and writing to a removable non-volatile disk (e.g., a "floppy disk"), and an optical disk drive for reading and writing to a removable non-volatile optical disk (e.g., a CD-ROM, a DVD-ROM, or other optical media) may be provided. In these cases, each drive may be connected to the bus 18 via one or more data medium interfaces. The system memory 28 may include at least one program product having a set (e.g., at least one) of program modules that are configured to perform the functions of the various embodiments of the present invention.

[0117] A program / utility 40 having a set (at least one) of program modules 42 may be stored, for example, in system memory 28, such program modules 42 including, but not limited to, an operating system, one or more application programs, other program modules, and program data, each of which or some combination may include an implementation of a network environment. Program modules 42 generally perform the functions and / or methods of the embodiments described herein.

[0118] The vehicle 4 may also communicate with one or more external devices 14 (e.g., keyboards, pointing devices, displays 24, etc.), one or more devices that enable a user to interact with the vehicle 4, and / or any device that enables the vehicle 4 to communicate with one or more other computing devices (e.g., network cards, modems, etc.). Such communication may be performed via an input / output (I / O) interface 22. Furthermore, the vehicle 4 may also communicate with one or more networks (e.g., a local area network (LAN), a wide area network (WAN), and / or a public network, such as the Internet) via a network adapter 20. Figure 4 As shown, the network adapter 20 communicates with other modules of the vehicle 4 via the bus 18. It should be understood that although Figure 4 Not shown, other hardware and / or software modules may be used in conjunction with the vehicle 4, including but not limited to microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0119] The processing unit 16 executes various functional applications and page displays by running the program stored in the system memory 28, for example, implementing the vehicle engine starting method provided by the embodiment of the present invention, the method comprising:

[0120] When the hybrid vehicle is running in a pure electric mode, obtaining current operating parameters of the hybrid vehicle;

[0121] Determining, according to the current operating parameters, a speed change of the hybrid vehicle within a preset time period after a current moment;

[0122] When it is determined that the speed change meets a preset condition, the engine of the hybrid vehicle is started to switch the hybrid vehicle from the pure electric mode to the hybrid mode or the engine mode.

[0123] Of course, those skilled in the art can understand that the processor can also implement the technical solution of the vehicle engine starting method provided by any embodiment of the present invention.

[0124] An embodiment of the present invention provides a computer-readable storage medium having a computer program stored thereon. When the program is executed by a processor, for example, a vehicle engine starting method provided by an embodiment of the present invention is implemented. The method includes:

[0125] When the hybrid vehicle is running in a pure electric mode, obtaining current operating parameters of the hybrid vehicle;

[0126] Determining, according to the current operating parameters, a speed change of the hybrid vehicle within a preset time period after a current moment;

[0127] When it is determined that the speed change meets a preset condition, the engine of the hybrid vehicle is started to switch the hybrid vehicle from the pure electric mode to the hybrid mode or the engine mode.

[0128] The computer storage medium of the embodiment of the present invention can adopt any combination of one or more computer-readable media. The computer-readable medium can be a computer-readable signal medium or a computer-readable storage medium. The computer-readable storage medium can be, for example, but not limited to: an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples (non-exhaustive list) of computer-readable storage media include: 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 or 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 this document, 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.

[0129] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, which carry computer-readable program code. 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 a computer-readable storage medium, which may send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0130] The program code embodied on the computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

[0131] Computer program code for performing the operations of the present invention may be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0132] It should be understood by those skilled in the art that the modules or steps of the present invention described above can be implemented by a general-purpose computing device, they can be concentrated on a single computing device, or distributed on a network composed of multiple computing devices, optionally, they can be implemented by a program code executable by a computer device, so that they can be stored in a storage device and executed by the computing device, or they can be made into individual integrated circuit modules, or multiple modules or steps therein can be made into a single integrated circuit module for implementation. Thus, the present invention is not limited to any specific combination of hardware and software.

[0133] In addition, the acquisition, storage, use, and processing of data in the technical solution of the present invention are in compliance with the relevant provisions of national laws and regulations.

[0134] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A method for starting an engine of a vehicle, characterized in that: include: When the hybrid vehicle is running in a pure electric mode, obtaining current operating parameters of the hybrid vehicle; Determining, according to the current operating parameters, a speed change of the hybrid vehicle within a preset time period after a current moment; When it is determined that the speed change meets a preset condition, the engine of the hybrid vehicle is started to switch the hybrid vehicle from the pure electric mode to the hybrid mode or the engine mode.

2. The vehicle engine starting method according to claim 1, characterized in that: The current operating parameters include the current operating characteristics of the hybrid vehicle at the current moment, the average vehicle speed, average accelerator pedal opening, average brake pedal opening, average remaining power, average current at the current time step at the current moment, and at least one of the average vehicle speed and acceleration variance of a preset number of time steps before the current moment.

3. The vehicle engine starting method according to claim 1, characterized in that: Determining a speed change of the hybrid vehicle within a preset time period after a current moment according to the current operating parameter includes: A speed change of the hybrid vehicle within a first preset number of time steps after a current time step at a current moment is determined according to the current operating parameter.

4. The vehicle engine starting method according to claim 3, characterized in that: Determining, according to the current operating parameter, a speed change of the hybrid vehicle within a first preset number of time steps after a current time step at a current moment, includes: The current operating parameters are input into a pre-trained speed change determination model, so that the speed change determination model determines the speed change of the hybrid vehicle within a first preset number of time steps after the current time step according to the current operating parameters.

5. The vehicle engine starting method according to claim 3, characterized in that: The preset condition is that the hybrid vehicle accelerates within a target number of time steps after the current time step, and a target speed corresponding to a termination moment of the target number of time steps after the current time step is greater than a preset speed, wherein the target number is less than the first preset number; or, the hybrid vehicle accelerates within a first preset number of time steps after the current time step, and the vehicle speed is greater than the preset speed in at least a preset proportion of the first preset number of time steps.

6. The vehicle engine starting method according to claim 3, characterized in that: When it is determined that the speed change condition satisfies a preset condition, starting the engine of the hybrid vehicle includes: When it is determined that the speed change conditions within a first preset number of time steps satisfy the preset condition after a second preset number of consecutive time steps, the engine of the hybrid vehicle is started at a start time of a next time step.

7. The vehicle engine starting method according to claim 4, characterized in that: The training process of the speed change determination model includes: Obtaining historical operating parameters of the hybrid vehicle at each historical time step within a historical time period; determining, according to the historical operating parameters of each of the historical time steps, a real speed change of the hybrid vehicle within a first preset number of time steps after each of the historical time steps; The speed change determination model is obtained by performing network training using the historical operating parameters of the hybrid vehicle corresponding to the historical time step as training input and the actual speed change of the hybrid vehicle within a first preset number of time steps after the historical time step as training output to guide training.

8. A vehicle engine starting device, characterized in that: include: An acquisition module, used for acquiring current operating parameters of the hybrid vehicle when the hybrid vehicle is running in a pure electric mode; A determination module, configured to determine a speed change of the hybrid vehicle within a preset time period after a current moment according to the current operating parameters; The execution module is used to start the engine of the hybrid vehicle when it is determined that the speed change meets a preset condition, so as to switch the hybrid vehicle from the pure electric mode to the hybrid mode or the engine mode.

9. A vehicle, characterized in that: The vehicle comprises: at least one processor; and a memory communicatively coupled to the at least one processor; The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the vehicle engine starting method as described in any one of claims 1-7.

10. A storage medium containing computer executable instructions, characterized in that: When the computer executable instructions are executed by a computer processor, they are used to execute the vehicle engine starting method as described in any one of claims 1-7.

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