CN117864143A - Vehicle control method and device and vehicle - Google Patents

Abstract

The application provides a vehicle control method and device and a vehicle, wherein the method is applied to the vehicle and comprises the following steps: acquiring the current speed of a vehicle and the current electric quantity of a power battery; determining an optimal operation strategy in a target mode according to the current vehicle speed and/or the current electric quantity; and controlling the operation of the hydrogen engine hybrid system of the vehicle based on the optimal operation strategy. According to the method, the optimal operation strategy under the target mode can be determined according to the current speed of the vehicle and the current electric quantity of the power battery, the hydrogen engine hybrid system is controlled to operate according to the optimal operation strategy, so that proper strategies can be selected under different target modes, and the problem of short endurance of the hydrogen engine is avoided by adopting the hybrid system.

Description

Vehicle control method and device and vehicle

Technical Field

The present application relates to the field of vehicles, and more particularly, to a vehicle control method and apparatus in the field of vehicles, and a vehicle.

Background

Because the combustion product of the hydrogen is only water and is green clean fuel, the hydrogen fuel is adopted for the engine in the related industry at present, but the hydrogen storage occupation space is larger, the hydrogen storage fuel of the whole vehicle is limited, and the cruising ability of the whole vehicle is easy to be poor.

Disclosure of Invention

The application provides a vehicle control method, which can determine an optimal operation strategy under a target mode according to the current speed of a vehicle and the current electric quantity of a power battery, control a hydrogen engine hybrid system to operate according to the optimal operation strategy so as to select proper strategies under different target modes, and avoid the problem of short endurance of the hydrogen engine by adopting the hybrid system.

In a first aspect, a vehicle control method is provided, the method comprising: acquiring the current speed of a vehicle and the current electric quantity of a power battery; determining an optimal operation strategy in a target mode according to the current vehicle speed and/or the current electric quantity; and controlling the operation of the hydrogen engine hybrid system of the vehicle based on the optimal operation strategy.

Through the technical scheme, the optimal operation strategy under the target mode can be determined according to the current speed of the vehicle and the current electric quantity of the power battery, the hydrogen engine hybrid system is controlled to operate according to the optimal operation strategy, so that proper strategies can be selected under different target modes, and the problem of short endurance of the hydrogen engine is avoided by adopting the hybrid system.

With reference to the first aspect, in some possible implementations, the target modes include a long-duration mode and an electricity consumption priority mode, wherein the whole vehicle has the longest duration in the long-duration mode, and the priority of the power battery providing the whole vehicle driving force in the electricity consumption priority mode is higher than that of the hydrogen engine.

Through the technical scheme, the target modes of the embodiment of the application are divided into two modes, the two modes can be selected according to actual conditions, and the cost and the energy supplementing times of the vehicle are reduced.

With reference to the first aspect and the foregoing implementation manner, in some possible implementation manners, if the target mode is a long endurance mode, determining an optimal operation policy in the target mode according to a current vehicle speed and/or a current electric quantity includes: if the current electric quantity is larger than the first preset electric quantity, determining an optimal operation strategy of the target mode according to the current electric quantity and the current vehicle speed; and if the current electric quantity is smaller than or equal to the first preset electric quantity, determining the optimal operation strategy of the target mode according to the current electric quantity.

Through the technical scheme, the embodiment of the application can determine how to determine the optimal operation strategy of the target mode according to the current electric quantity.

With reference to the first aspect and the foregoing implementation manner, in some possible implementation manners, determining an optimal operation policy of the long endurance mode according to the current electric quantity and the current vehicle speed includes: if the current electric quantity is larger than the second preset electric quantity and the current vehicle speed is larger than the first preset vehicle speed, the optimal operation strategy comprises: controlling the hydrogen engine to work at an optimal thermal efficiency point, wherein the second preset electric quantity is larger than the first preset electric quantity; if the current electric quantity is larger than the second preset electric quantity and the current vehicle speed is smaller than or equal to the first preset vehicle speed, the optimal operation strategy comprises: controlling the power battery to work; if the current electric quantity is larger than the first preset electric quantity and smaller than or equal to the second preset electric quantity, determining an optimal working condition point of the hydrogen engine according to the current vehicle speed, wherein the optimal operation strategy comprises the following steps: and controlling the hydrogen engine to work at an optimal working condition point.

Through the technical scheme, the embodiment of the application can determine the optimal operation strategy of the long-endurance mode according to the current electric quantity and the threshold value of the current vehicle speed.

With reference to the first aspect and the foregoing implementation manner, in some possible implementation manners, determining an optimal operating point of the hydrogen engine according to the current vehicle speed includes: if the current vehicle speed is smaller than or equal to a first preset vehicle speed, the optimal working point is a first working point, wherein the output power and the engine rotating speed of the first working point are smaller than those of the optimal thermal efficiency point; the current vehicle speed is greater than a first preset vehicle speed and less than or equal to a second preset vehicle speed, and the optimal working condition point is the optimal thermal efficiency point, wherein the first preset vehicle speed is less than the second preset vehicle speed; and if the current vehicle speed is greater than the second preset vehicle speed, the optimal working point is a second working point, wherein the output power and the engine rotating speed of the second working point are both greater than those of the optimal thermal efficiency point.

Through the technical scheme, the embodiment of the application can determine the optimal working condition point of the hydrogen engine according to the threshold value of the current speed.

With reference to the first aspect and the foregoing implementation manner, in some possible implementation manners, if the target mode is a power consumption priority mode, determining an optimal operation policy in the target mode according to a current vehicle speed and/or a current electric quantity includes: if the current electric quantity is greater than the first preset electric quantity, the optimal operation strategy of the target mode comprises: controlling the power battery to work; and if the current electric quantity is smaller than or equal to the first preset electric quantity, determining the optimal operation strategy of the target mode according to the current electric quantity.

Through the above technical scheme, the embodiment of the application can be matched with the electricity consumption priority mode when the current electric quantity is larger than the first preset electric quantity in the electricity consumption priority mode, and the power battery is controlled to work preferentially.

With reference to the first aspect and the foregoing implementation manner, in some possible implementation manners, determining an optimal operation policy of the target mode according to the current power includes: acquiring a first operation curve and a second operation curve which take a first working point as a starting point and a second working point as an end point, wherein the curvature of the first operation curve is lower than that of the second operation curve; if the current electric quantity is larger than the third preset electric quantity and smaller than or equal to the first preset electric quantity, controlling the hydrogen engine to work according to a first operation curve, wherein the third preset electric quantity is smaller than the first preset electric quantity; and if the current electric quantity is smaller than or equal to the third preset electric quantity, controlling the hydrogen engine to work according to the second running curve.

Through the technical scheme, the embodiment of the application can determine the optimal operation strategy of the hydrogen engine according to the threshold value of the current electric quantity.

With reference to the first aspect and the foregoing implementation manner, in some possible implementation manners, before determining the optimal operation policy in the target mode according to the current vehicle speed and/or the current electric quantity, the method further includes: identifying a mode selection intent of a user; and determining a target mode of the hydrogen engine hybrid system according to the mode selection intention.

Through the technical scheme, the target mode of the hydrogen engine hybrid system can be determined based on the mode selection intention of the user, the user can select according to own driving habits or driving willingness determined according to actual traveling road conditions, and the user experience is improved.

In a second aspect, there is provided a vehicle control apparatus including: the acquisition module is used for acquiring the current speed of the vehicle and the current electric quantity of the power battery; the determining module is used for determining an optimal operation strategy in a target mode according to the current vehicle speed and/or the current electric quantity; and the control module is used for controlling the operation of the hydrogen engine hybrid system of the vehicle based on the optimal operation strategy.

With reference to the second aspect, in some possible implementations, the target modes include a long-duration mode and an electricity consumption priority mode, wherein the whole vehicle has the longest duration in the long-duration mode, and the priority of the power battery providing the whole vehicle driving force in the electricity consumption priority mode is higher than that of the hydrogen engine.

With reference to the second aspect and the foregoing implementation manner, in some possible implementation manners, if the target mode is a long duration mode, the determining module is further configured to: if the current electric quantity is larger than the first preset electric quantity, determining an optimal operation strategy of the target mode according to the current electric quantity and the current vehicle speed; and if the current electric quantity is smaller than or equal to the first preset electric quantity, determining the optimal operation strategy of the target mode according to the current electric quantity.

With reference to the second aspect and the foregoing implementation manner, in some possible implementation manners, the determining module is further configured to: if the current electric quantity is larger than the second preset electric quantity and the current vehicle speed is larger than the first preset vehicle speed, the optimal operation strategy comprises: controlling the hydrogen engine to work at an optimal thermal efficiency point, wherein the second preset electric quantity is larger than the first preset electric quantity; if the current electric quantity is larger than the second preset electric quantity and the current vehicle speed is smaller than or equal to the first preset vehicle speed, the optimal operation strategy comprises: controlling the power battery to work; if the current electric quantity is larger than the first preset electric quantity and smaller than or equal to the second preset electric quantity, determining an optimal working condition point of the hydrogen engine according to the current vehicle speed, wherein the optimal operation strategy comprises the following steps: and controlling the hydrogen engine to work at an optimal working condition point.

With reference to the second aspect and the foregoing implementation manner, in some possible implementation manners, the determining module is further configured to: if the current vehicle speed is smaller than or equal to a first preset vehicle speed, the optimal working point is a first working point, wherein the output power and the engine rotating speed of the first working point are smaller than those of the optimal thermal efficiency point; the current vehicle speed is greater than a first preset vehicle speed and less than or equal to a second preset vehicle speed, and the optimal working condition point is the optimal thermal efficiency point, wherein the first preset vehicle speed is less than the second preset vehicle speed; and if the current vehicle speed is greater than the second preset vehicle speed, the optimal working point is a second working point, wherein the output power and the engine rotating speed of the second working point are both greater than those of the optimal thermal efficiency point.

With reference to the second aspect and the foregoing implementation manner, in some possible implementation manners, if the target mode is a power consumption priority mode, the determining module is further configured to: if the current electric quantity is greater than the first preset electric quantity, the optimal operation strategy of the target mode comprises: controlling the power battery to work; and if the current electric quantity is smaller than or equal to the first preset electric quantity, determining the optimal operation strategy of the target mode according to the current electric quantity.

With reference to the second aspect and the foregoing implementation manner, in some possible implementation manners, the determining module is further configured to: acquiring a first operation curve and a second operation curve which take a first working point as a starting point and a second working point as an end point, wherein the curvature of the first operation curve is lower than that of the second operation curve; if the current electric quantity is larger than the third preset electric quantity and smaller than or equal to the first preset electric quantity, controlling the hydrogen engine to work according to a first operation curve, wherein the third preset electric quantity is smaller than the first preset electric quantity; and if the current electric quantity is smaller than or equal to the third preset electric quantity, controlling the hydrogen engine to work according to the second running curve.

With reference to the second aspect and the foregoing implementation manner, in some possible implementation manners, the method further includes: the identifying module is used for identifying the mode selection intention of the user before the optimal operation strategy in the target mode is determined according to the current vehicle speed and/or the current electric quantity; and determining a target mode of the hydrogen engine hybrid system according to the mode selection intention.

In a third aspect, there is provided a vehicle comprising: a memory, a processor and a computer program stored on the memory and executable on the processor, the processor executing the program to implement the method as described above in the first aspect or any one of the possible implementations of the first aspect.

Drawings

Fig. 1 is a block diagram of a hybrid system provided in the related art;

FIG. 2 is a flow chart of a vehicle control method provided by an embodiment of the present application;

FIG. 3 is a schematic diagram of an operational strategy for different target modes provided by an embodiment of the present application;

FIG. 4 is a schematic diagram of a vehicle control apparatus provided in an embodiment of the present application;

fig. 5 is a schematic structural diagram of a vehicle according to an embodiment of the present application.

Detailed Description

The technical solutions in the present application will be clearly and thoroughly described below with reference to the accompanying drawings. Wherein, in the description of the embodiments of the present application, "/" means or is meant unless otherwise indicated, for example, a/B may represent a or B: the text "and/or" is merely an association relation describing the associated object, and indicates that three relations may exist, for example, a and/or B may indicate: the three cases where a exists alone, a and B exist together, and B exists alone, and in addition, in the description of the embodiments of the present application, "plural" means two or more than two.

The terms "first," "second," and the like, are used below for descriptive purposes only and are not to be construed as implying or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.

Before explaining the vehicle control method provided by the embodiment of the application, it should be noted that, the vehicle of the application embodiment adopts a hybrid architecture of a hydrogen engine to be a dual-motor series hybrid architecture, that is, adopts a hybrid system, a PHEV (Plug-in hybrid electric vehicle ) series mode, and the engine can drive a generator to generate electricity, and the generated electricity can be directly transmitted to a driving motor for driving the vehicle to run, or can be charged into a battery to increase the electric quantity of the battery.

The structure of the hybrid system is shown in fig. 1, and includes: the engine 1, the clutch 2, the generator 3, the generator direct connection motor circuit 4, the battery charge-discharge circuit 5, the wheels 6, the half shafts 7, the differential 8, the driving motor 9 and the battery 10. The hybrid system is adopted, so that the problem of short endurance of the hydrogen engine can be solved, and the endurance of the vehicle is improved.

Fig. 2 is a schematic flowchart of a vehicle control method provided in an embodiment of the present application.

Illustratively, as shown in FIG. 2, the method includes:

step S101, a current speed of the vehicle and a current electric quantity of the power battery are obtained.

The current electric quantity of the power battery and the current speed of the vehicle can be acquired through the acquisition unit of the vehicle.

Step S102, determining the optimal operation strategy in the target mode according to the current vehicle speed and/or the current electric quantity.

The target mode comprises a long-endurance mode and a power consumption priority mode, wherein the whole vehicle has the longest endurance mileage in the long-endurance mode, and the priority of the power battery for providing the whole vehicle driving force in the power consumption priority mode is higher than that of the hydrogen engine.

It can be understood that the embodiment of the application can determine the optimal operation strategy under the target mode according to the current speed of the vehicle and the current electric quantity of the power battery so as to select the optimal operation strategy under different modes and meet the requirements of users under different modes.

Specifically, the long endurance mode can be used for the overall endurance capacity of the whole car which needs the hydrogen and the electric quantity of the battery to be longest when the user goes out for a long distance, so that the energy supplementing times in the long distance travel process are reduced to the maximum extent; the electricity consumption priority mode is used for saving hydrogen fuel under the condition that the vehicle runs in a shorter distance or the filling of hydrogen in a part of areas is inconvenient, and the battery electric quantity is used for continuous voyage as far as possible.

It should be noted that, in the embodiment of the application, two operation modes are set in combination with the operation characteristic and the hybrid architecture characteristic of the hydrogen engine, so that the operation modes can be selected according to actual conditions, and the cost and energy supplementing times of the self-vehicle are reduced.

How to determine the optimal operation strategy according to the current vehicle speed and/or the current electric quantity in the different target modes will be described below.

If the target mode is a long endurance mode, determining an optimal operation strategy in the target mode according to the current vehicle speed and/or the current electric quantity, including: if the current electric quantity is larger than the first preset electric quantity, determining an optimal operation strategy of the target mode according to the current electric quantity and the current vehicle speed; and if the current electric quantity is smaller than or equal to the first preset electric quantity, determining the optimal operation strategy of the target mode according to the current electric quantity.

The first preset power may be calibrated in advance according to specific conditions, for example, may be set to 20%.

It can be appreciated that, in the embodiment of the present application, when the target mode is the long-duration mode, how to determine the optimal operation strategy in the target mode based on the current electric quantity and the current vehicle speed may be determined according to the electric quantity value of the current electric quantity.

Specifically, when the current electric quantity is larger than the first preset electric quantity, determining an optimal operation strategy in a target mode based on the current electric quantity and the current vehicle speed, and considering the influence of the electric quantity on the optimal operation strategy and the influence of the vehicle speed; when the current electric quantity is smaller than or equal to the first preset electric quantity, the electric quantity of the power battery of the vehicle is low at the moment, the influence of the vehicle speed on the optimal operation strategy is not needed to be considered, and only the influence of the electric quantity on the optimal operation strategy is needed to be considered, namely the optimal operation strategy of the target mode is determined according to the current electric quantity.

In the embodiment of the application, determining the optimal operation strategy of the long-endurance mode according to the current electric quantity and the current vehicle speed comprises the following steps: if the current electric quantity is larger than the second preset electric quantity and the current vehicle speed is larger than the first preset vehicle speed, the optimal operation strategy comprises: controlling the hydrogen engine to work at an optimal thermal efficiency point, wherein the second preset electric quantity is larger than the first preset electric quantity; if the current electric quantity is larger than the second preset electric quantity and the current vehicle speed is smaller than or equal to the first preset vehicle speed, the optimal operation strategy comprises: controlling the power battery to work; if the current electric quantity is larger than the first preset electric quantity and smaller than or equal to the second preset electric quantity, determining an optimal working condition point of the hydrogen engine according to the current vehicle speed, wherein the optimal operation strategy comprises the following steps: and controlling the hydrogen engine to work at an optimal working condition point.

The second preset electric quantity is larger than the first preset electric quantity, and the second preset electric quantity can be calibrated in advance according to specific conditions, for example, can be set to 60%; the first preset vehicle speed may be calibrated in advance according to specific situations, for example, may be set to 50kph.

When the hydrogen engine generates electricity, the optimal thermal efficiency point can basically keep the balance of the battery power of the whole vehicle, the balance of the power is that the engine drives the generator to generate power, the power is basically equal to the power consumed by the whole vehicle driving, and the battery power is kept unchanged.

It can be understood that in the embodiment of the application, in the long endurance mode, when the current electric quantity is greater than the second preset electric quantity and the current vehicle speed is greater than the first preset vehicle speed, the vehicle speed is greater, the wind noise and the tire noise of the whole vehicle are higher, the running noise of the engine can be covered, the customer perception is better, and the engine can start to generate electricity, so that the hydrogen generator is controlled to work at the optimal thermal efficiency point, the engine generates electricity, and the electric quantity balance of the battery of the whole vehicle can be basically maintained; when the current electric quantity is larger than the second preset electric quantity and the current vehicle speed is smaller than or equal to the first preset vehicle speed, the engine runs at a certain noise, but the vehicle speed is smaller at the moment, the whole vehicle runs quite, the running noise of the whole vehicle cannot cover the running noise of the engine, and the noise feeling of customers in the vehicle is poor, so that the engine is not started at the moment, and the power battery is controlled to work; when the current electric quantity is larger than or equal to the first preset electric quantity and smaller than the second preset electric quantity, the optimal operation strategy of the hydrogen engine is determined according to the current vehicle speed, and the hydrogen engine can be controlled to work at an optimal working condition point.

In the embodiment of the application, determining the optimal working condition point of the hydrogen engine according to the current vehicle speed comprises the following steps: if the current vehicle speed is smaller than or equal to a first preset vehicle speed, the optimal working point is a first working point, wherein the output power and the engine rotating speed of the first working point are smaller than those of the optimal thermal efficiency point; the current vehicle speed is greater than a first preset vehicle speed and less than or equal to a second preset vehicle speed, and the optimal working condition point is the optimal thermal efficiency point, wherein the first preset vehicle speed is less than the second preset vehicle speed; and if the current vehicle speed is greater than the second preset vehicle speed, the optimal working point is a second working point, wherein the output power and the engine rotating speed of the second working point are both greater than those of the optimal thermal efficiency point.

The second preset vehicle speed can be calibrated in advance according to specific conditions, for example, the second preset vehicle speed can be set to be 100kph, and the first preset vehicle speed is smaller than the second preset vehicle speed.

It can be appreciated that when the current electric quantity is greater than or equal to the first preset electric quantity and less than the second preset electric quantity, the embodiment of the application can determine the optimal working condition point of the hydrogen engine according to the current vehicle speed, and further control the hydrogen engine to work at the optimal working condition point.

Specifically, when the current vehicle speed is less than or equal to a first preset vehicle speed, and the battery power is low at this moment, when the whole vehicle runs at a low speed, the engine is required to generate power to compensate for the consumption of the battery for driving the whole vehicle, the optimal working point is a first working point, which can be called as a point B, and the output power of the first working point and the engine speed are both less than those of the optimal thermal efficiency point.

When the current vehicle speed is greater than the first preset vehicle speed and less than or equal to the second preset vehicle speed, the optimal working condition point is an optimal thermal efficiency point, and the optimal thermal efficiency point can be called as point A.

When the current speed is greater than the second preset speed, the electric quantity consumption of the whole vehicle is higher, so that the power output by the optimal heat efficiency point cannot meet the electric consumption requirement of the whole vehicle, the optimal working point is a second working point which can be called as point C, the output power and the engine rotating speed of the second working point are both greater than those of the optimal heat efficiency point, the electric consumption requirement of the whole vehicle can be met, and the rest energy can charge the battery of the whole vehicle.

If the target mode is the electricity consumption priority mode, determining an optimal operation strategy in the target mode according to the current vehicle speed and/or the current electric quantity, wherein the optimal operation strategy comprises the following steps: if the current electric quantity is greater than the first preset electric quantity, the optimal operation strategy of the target mode comprises: controlling the power battery to work; and if the current electric quantity is smaller than or equal to the first preset electric quantity, determining the optimal operation strategy of the target mode according to the current electric quantity.

It may be understood that when the target mode is the electricity consumption priority mode, the embodiment of the present application may determine an optimal operation policy under the target mode according to the current vehicle speed and the current electric quantity, and when the current electric quantity is greater than the first preset electric quantity, the power battery is preferentially controlled to work in cooperation with the electricity consumption priority mode, and when the current electric quantity is less than or equal to the first preset electric quantity, and when the electric quantity is lower at this time, the optimal operation policy of the electricity consumption priority mode is determined according to the current electric quantity.

Specifically, when the current electric quantity is larger than the first preset electric quantity, the optimal operation strategy of the target mode is to control the power battery to work; and when the current electric quantity is smaller than or equal to the first preset electric quantity, determining the optimal operation strategy of the target mode according to the current electric quantity.

In the embodiment of the application, determining the optimal operation strategy of the target mode according to the current electric quantity comprises the following steps: acquiring a first operation curve and a second operation curve which take a first working point as a starting point and a second working point as an end point, wherein the curvature of the first operation curve is lower than that of the second operation curve; if the current electric quantity is larger than the third preset electric quantity and smaller than or equal to the first preset electric quantity, controlling the hydrogen engine to work according to a first operation curve, wherein the third preset electric quantity is smaller than the first preset electric quantity; and if the current electric quantity is smaller than or equal to the third preset electric quantity, controlling the hydrogen engine to work according to the second running curve.

The third preset electric quantity is smaller than the first preset electric quantity, and the third preset electric quantity can be calibrated in advance according to specific conditions, for example, can be set to be 10%.

It can be understood that two operation curves can be constructed according to the embodiment of the application, the first operation curve is a curve taking the first working condition point as a starting point, the second operation curve is an operation curve taking the second working condition point as an end point, when the current electric quantity is larger than the third preset electric quantity and smaller than or equal to the first preset electric quantity, the hydrogen engine is controlled to work according to the first operation curve, at the moment, the output power of the engine is slightly higher than the consumed electric quantity of the whole vehicle, the electric quantity balance of the battery is kept, and the battery is slightly charged; when the current electric quantity is smaller than or equal to the third preset electric quantity, the hydrogen engine is controlled to work according to the second running curve, at the moment, the engine load at the same rotating speed is higher, the engine output power is higher than the first running curve, the generated energy is ensured to be removed to meet the whole vehicle consumption, and about one third of the generated energy is charged into the battery to supplement electricity for the battery.

In the embodiment of the application, before determining the optimal operation strategy in the target mode according to the current vehicle speed and/or the current electric quantity, the method further comprises the following steps: identifying a mode selection intent of a user; and determining a target mode of the hydrogen engine hybrid system according to the mode selection intention.

It can be understood that, before the optimal operation strategy in the target mode is determined according to the current vehicle speed and/or the current electric quantity, the target mode of the hydrogen engine hybrid system can be determined according to the selection intention of the user, so that the degree of freedom of user selection is increased, the user can select according to the driving habit and the driving intention determined according to the actual traveling road condition, the hydrogen consumption priority or the electricity consumption priority can be freely selected, and the vehicle experience sense of the user is improved.

For example, when the user intends to expect the range of the whole vehicle to be long, it may be determined that the target mode of the hybrid system of the hydrogen engine is the long range mode.

Step S103, controlling the operation of the hydrogen engine hybrid system of the vehicle based on the optimal operation strategy.

It can be understood that the embodiment of the application can control the operation of the hydrogen engine hybrid system of the vehicle based on the optimal operation strategy, so that the hydrogen utilization efficiency can be increased, and the endurance mileage of the whole vehicle can be further improved.

The following describes a control method of the vehicle according to the embodiment of the present application by a specific embodiment, which specifically includes:

1. the user selects according to the driving habit and the driving willingness determined according to the actual traveling road condition. The selection modes are divided into two types: 1. a long endurance mode; 2. electricity consumption priority mode.

2. The user selects the long endurance mode, if the battery power is higher than the second preset power (60% in the embodiment) at this time, the method is used for carrying out non-violent driving in urban areas, and the engine is operated in a first mode; when the vehicle speed is higher than the first preset vehicle speed (50 kph is set in the embodiment), the engine operates at the optimal thermal efficiency point (point A, as shown in fig. 3) and operates at about 30kw of power to generate electricity, and the balance of the battery capacity of the whole vehicle can be basically maintained. The electric quantity balance is that the engine drives the generator to generate electric quantity which is basically equal to the electric quantity consumed by the whole vehicle driving, and the electric quantity of the battery is kept unchanged. Because the rotation speed of the optimal thermal efficiency point of the engine is about 2500rpm, and the engine has certain noise, when the vehicle speed is lower than 50kph, the engine is not started, and because the whole vehicle runs quite at the moment, the running noise of the whole vehicle cannot cover the running noise of the engine, and the noise feeling of customers in the vehicle is poor; when the vehicle speed is greater than 50kph, the wind noise and the tire noise of the whole vehicle are high at the moment, the running noise of the engine can be covered, the customer perception is good, and the engine can start to generate power.

3. The user selects the long endurance mode, if the battery level is lower than 60% but greater than the first preset level (20% in the present embodiment), the engine is operated in the second mode: when the vehicle speed is lower than 50kph, because the battery power is lower at the moment, when the whole vehicle runs at a low speed, the engine is required to generate power to compensate the consumption of the battery for driving the whole vehicle; at this time, the engine is stabilized to operate under the working condition B (the point B is shown in the figure 3) to generate power, the output power is about 10kw, the engine rotating speed is about 1300rpm, the noise is low, and the noise of the whole vehicle operation can cover the noise of the engine. When the vehicle speed is higher than 50kph and lower than 100kph, the engine operates at the point A (the optimal heat efficiency point, and the output is about 30 kw); when the vehicle speed is higher than a second preset vehicle speed (100 kph is set in the embodiment), the electric quantity consumption of the whole vehicle is higher (> 50 kW), and the 30kW output by the point A cannot meet the electric consumption requirement of the whole vehicle; at the moment, the engine runs at the point C, the rotating speed is about 3500rpm, the output power is about 60kw, the power consumption requirement of the whole vehicle is met, and the rest energy can charge the battery of the whole vehicle. Although the noise of the engine is larger at this time, the wind noise and the tire noise of the whole automobile can be covered due to the higher speed of the automobile, and the customer experience is not affected.

4. The user selects a long endurance mode, but the battery level is lower than 20% at this time; or the user selects the power consumption priority mode, the battery level has been reduced to 20%, and the engine is operated in the three modes: the starting points are points B and C (shown in figure 3) and are divided into a first operation curve a and a second operation curve B. When the vehicle speed is 0, the engine runs at the point B, and as the vehicle speed increases, the engine speed and load increase, and the engine runs on the line a or the line B. When the electricity quantity is higher than the third preset electricity quantity (10% in the embodiment), the engine runs in a line a, the output power of the engine is slightly higher than the consumption electricity quantity of the whole vehicle, the electricity quantity balance of the battery is kept, and the battery is slightly charged. When the electric quantity of the battery is lower than 10%, the battery is extremely deficient, the battery runs on the line b, the engine load at the same rotation speed is higher, the output power of the engine is higher than the line a, the generated energy is ensured to be removed to meet the whole vehicle consumption, and about one third of the generated energy is charged into the battery to supplement electricity for the battery.

According to the vehicle control method, the optimal operation strategy in the target mode can be determined according to the current speed of the vehicle and the current electric quantity of the power battery, the hydrogen engine hybrid system is controlled to operate according to the optimal operation strategy, so that proper strategies can be selected in different target modes, and the problem of short endurance of the hydrogen engine is avoided by adopting the hybrid system.

Fig. 4 is a schematic structural diagram of a vehicle control apparatus provided in an embodiment of the present application.

For example, as shown in fig. 4, the apparatus 20 may include: an acquisition module 100, a determination module 200 and a control module 300.

The acquisition module 100: the method comprises the steps of acquiring the current speed of a vehicle and the current electric quantity of a power battery;

determination module 200: the optimal operation strategy in the target mode is determined according to the current vehicle speed and/or the current electric quantity;

control module 300: for controlling operation of a hydrogen engine hybrid system of a vehicle based on an optimal operating strategy.

In the embodiment of the application, the target mode includes a long-duration mode and an electricity consumption priority mode, wherein the whole vehicle has the longest duration mileage in the long-duration mode, and the priority of the power battery for providing the whole vehicle driving force in the electricity consumption priority mode is higher than that of the hydrogen engine.

In the embodiment of the present application, if the target mode is the long endurance mode, the determining module 200 is further configured to: if the current electric quantity is larger than the first preset electric quantity, determining an optimal operation strategy of the target mode according to the current electric quantity and the current vehicle speed; and if the current electric quantity is smaller than or equal to the first preset electric quantity, determining the optimal operation strategy of the target mode according to the current electric quantity.

In the embodiment of the present application, the determining module 200 is further configured to: if the current electric quantity is larger than the second preset electric quantity and the current vehicle speed is larger than the first preset vehicle speed, the optimal operation strategy comprises: controlling the hydrogen engine to work at an optimal thermal efficiency point, wherein the second preset electric quantity is larger than the first preset electric quantity; if the current electric quantity is larger than the second preset electric quantity and the current vehicle speed is smaller than or equal to the first preset vehicle speed, the optimal operation strategy comprises: controlling the power battery to work; if the current electric quantity is larger than the first preset electric quantity and smaller than or equal to the second preset electric quantity, determining an optimal working condition point of the hydrogen engine according to the current vehicle speed, wherein the optimal operation strategy comprises the following steps: and controlling the hydrogen engine to work at an optimal working condition point.

In the embodiment of the present application, the determining module 200 is further configured to: if the current vehicle speed is smaller than or equal to a first preset vehicle speed, the optimal working point is a first working point, wherein the output power and the engine rotating speed of the first working point are smaller than those of the optimal thermal efficiency point; the current vehicle speed is greater than a first preset vehicle speed and less than or equal to a second preset vehicle speed, and the optimal working condition point is the optimal thermal efficiency point, wherein the first preset vehicle speed is less than the second preset vehicle speed; and if the current vehicle speed is greater than the second preset vehicle speed, the optimal working point is a second working point, wherein the output power and the engine rotating speed of the second working point are both greater than those of the optimal thermal efficiency point.

In the embodiment of the present application, if the target mode is the electricity consumption priority mode, the determining module 200 is further configured to: if the current electric quantity is greater than the first preset electric quantity, the optimal operation strategy of the target mode comprises: controlling the power battery to work; and if the current electric quantity is smaller than or equal to the first preset electric quantity, determining the optimal operation strategy of the target mode according to the current electric quantity.

In the embodiment of the present application, the determining module 200 is further configured to: acquiring a first operation curve and a second operation curve which take a first working point as a starting point and a second working point as an end point, wherein the curvature of the first operation curve is lower than that of the second operation curve; if the current electric quantity is larger than the third preset electric quantity and smaller than or equal to the first preset electric quantity, controlling the hydrogen engine to work according to a first operation curve, wherein the third preset electric quantity is smaller than the first preset electric quantity; and if the current electric quantity is smaller than or equal to the third preset electric quantity, controlling the hydrogen engine to work according to the second running curve.

In the embodiment of the present application, the apparatus 20 of the embodiment of the present application further includes: and an identification module.

The identifying module is used for identifying the mode selection intention of the user before determining the optimal operation strategy under the target mode according to the current vehicle speed and/or the current electric quantity; and determining a target mode of the hydrogen engine hybrid system according to the mode selection intention.

According to the vehicle control device provided by the application, the optimal operation strategy under the target mode can be determined according to the current speed of the vehicle and the current electric quantity of the power battery, the hydrogen engine hybrid system is controlled to operate according to the optimal operation strategy, so that proper strategies can be selected under different target modes, and the problem of short endurance of the hydrogen engine is avoided by adopting the hybrid system.

Fig. 5 is a schematic structural diagram of a vehicle according to an embodiment of the present application. The vehicle may include:

memory 501, processor 502, and a computer program stored on memory 501 and executable on processor 502.

The processor 502 implements the vehicle control method provided in the above embodiment when executing a program.

Further, the vehicle further includes:

a communication interface 503 for communication between the memory 501 and the processor 502.

Memory 501 for storing a computer program executable on processor 502.

The memory 501 may include high speed RAM (Random Access Memory ) memory, and may also include non-volatile memory, such as at least one disk memory.

If the memory 501, the processor 502, and the communication interface 503 are implemented independently, the communication interface 503, the memory 501, and the processor 502 may be connected to each other via a bus and perform communication with each other. The bus may be an ISA (Industry Standard Architecture ) bus, a PCI (Peripheral Component, external device interconnect) bus, or EISA (Extended Industry Standard Architecture ) bus, among others. The buses may be divided into address buses, data buses, control buses, etc. For ease of illustration, only one thick line is shown in fig. 5, but not only one bus or one type of bus.

Alternatively, in a specific implementation, if the memory 501, the processor 502, and the communication interface 503 are integrated on a chip, the memory 501, the processor 502, and the communication interface 503 may perform communication with each other through internal interfaces.

The processor 502 may be a CPU (Central Processing Unit ) or ASIC (Application Specific Integrated Circuit, application specific integrated circuit) or one or more integrated circuits configured to implement embodiments of the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless explicitly defined otherwise.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

Although embodiments of the present application have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives, and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the application.

Claims (10)

1. A vehicle control method, characterized in that the method comprises:

acquiring the current speed of a vehicle and the current electric quantity of a power battery;

determining an optimal operation strategy in a target mode according to the current vehicle speed and/or the current electric quantity;

and controlling the operation of a hydrogen engine hybrid system of the vehicle based on the optimal operation strategy.

2. The method of claim 1, wherein the target mode includes a long range mode in which a range of the whole vehicle is longest and a power consumption priority mode in which the power battery provides a higher priority of the whole vehicle driving force than a hydrogen engine.

3. The method according to claim 2, wherein if the target mode is the long endurance mode, determining an optimal operation strategy in the target mode according to the current vehicle speed and/or the current electric quantity comprises:

if the current electric quantity is larger than a first preset electric quantity, determining an optimal operation strategy of the target mode according to the current electric quantity and the current vehicle speed;

and if the current electric quantity is smaller than or equal to a first preset electric quantity, determining an optimal operation strategy of the target mode according to the current electric quantity.

4. The method of claim 3, wherein the determining the optimal operating strategy for the long-range mode based on the current charge and the current vehicle speed comprises:

if the current electric quantity is greater than the second preset electric quantity and the current vehicle speed is greater than the first preset vehicle speed, the optimal operation strategy comprises: controlling the hydrogen engine to work at an optimal thermal efficiency point, wherein the second preset electric quantity is larger than the first preset electric quantity;

if the current electric quantity is greater than a second preset electric quantity and the current vehicle speed is less than or equal to the first preset vehicle speed, the optimal operation strategy comprises: controlling the power battery to work;

if the current electric quantity is greater than the first preset electric quantity and smaller than or equal to the second preset electric quantity, determining an optimal working condition point of the hydrogen engine according to the current vehicle speed, wherein the optimal operation strategy comprises: and controlling the hydrogen engine to work at the optimal working point.

5. The method of claim 4, wherein said determining an optimal operating point of said hydrogen engine based on said current vehicle speed comprises:

if the current vehicle speed is smaller than or equal to the first preset vehicle speed, the optimal working condition point is a first working condition point, wherein the output power and the engine rotating speed of the first working condition point are smaller than those of the optimal thermal efficiency point;

the current vehicle speed is greater than a first preset vehicle speed and less than or equal to a second preset vehicle speed, and the optimal working point is the optimal thermal efficiency point, wherein the first preset vehicle speed is less than the second preset vehicle speed;

and if the current vehicle speed is greater than the second preset vehicle speed, the optimal working condition point is a second working condition point, wherein the output power and the engine rotating speed of the second working condition point are both greater than those of the optimal thermal efficiency point.

6. The method according to claim 2, wherein if the target mode is the electricity consumption priority mode, determining an optimal operation strategy in the target mode according to the current vehicle speed and/or the current electric quantity comprises:

if the current electric quantity is greater than a first preset electric quantity, the optimal operation strategy of the target mode comprises: controlling the power battery to work;

and if the current electric quantity is smaller than or equal to the first preset electric quantity, determining an optimal operation strategy of the target mode according to the current electric quantity.

7. The method according to claim 3 or 6, wherein said determining an optimal operation strategy for said target mode based on said current power level comprises:

acquiring a first operation curve and a second operation curve which take a first working point as a starting point and a second working point as an end point, wherein the curvature of the first operation curve is lower than that of the second operation curve;

if the current electric quantity is larger than a third preset electric quantity and smaller than or equal to the first preset electric quantity, controlling the hydrogen engine to work according to the first operation curve, wherein the third preset electric quantity is smaller than the first preset electric quantity;

and if the current electric quantity is smaller than or equal to the third preset electric quantity, controlling the hydrogen engine to work according to the second running curve.

8. The method according to claim 1 or 2, further comprising, before determining an optimal operation strategy in a target mode from the current vehicle speed and/or the current electric quantity:

identifying a mode selection intent of a user;

and determining a target mode of the hydrogen engine hybrid system according to the mode selection intention.

9. A vehicle control apparatus, characterized in that the apparatus comprises:

the acquisition module is used for acquiring the current speed of the vehicle and the current electric quantity of the power battery;

the determining module is used for determining an optimal operation strategy in a target mode according to the current vehicle speed and/or the current electric quantity;

and the control module is used for controlling the operation of the hydrogen engine hybrid system of the vehicle based on the optimal operation strategy.

10. A vehicle, characterized in that the vehicle comprises: a memory, a processor and a computer program stored on the memory and executable on the processor, the processor executing the program to implement the vehicle control method as claimed in any one of claims 1 to 8.