CN114312788A - Vehicle driving control method and system and vehicle - Google Patents
Vehicle driving control method and system and vehicle Download PDFInfo
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- CN114312788A CN114312788A CN202011050582.6A CN202011050582A CN114312788A CN 114312788 A CN114312788 A CN 114312788A CN 202011050582 A CN202011050582 A CN 202011050582A CN 114312788 A CN114312788 A CN 114312788A
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Abstract
The invention discloses a vehicle driving control method, a computer readable storage medium, a control system and a vehicle, comprising the following steps: acquiring target route information of the vehicle and road condition information of the target route; calculating pre-marking information of the vehicle according to the target route information and the road condition information; and controlling the driving mode of the vehicle according to the pre-mark information. According to the vehicle driving control method, the influence of the external environment of the vehicle, such as the driving road condition, on the vehicle driving mode switching is considered, so that the control strategy can be adjusted in real time when the vehicle runs, and the economy and the comfort of the vehicle are optimized as far as possible. In addition, the control strategy is continuously optimized by carrying out information fusion on relevant internal and external variables, the self-learning capability of the control algorithm is improved, and the switching of the driving modes is more reasonable and efficient.
Description
Technical Field
The invention relates to the technical field of vehicle control, in particular to a vehicle driving control method, a computer readable storage medium, a control system and a vehicle.
Background
In the related art, it is pointed out that in a hybrid vehicle, an input signal of a conventional driving mode switching control strategy is provided by internal components, for example, when the battery SOC is lower than a certain value or the current battery SOC cannot meet the instantaneous torque demand of a driver, an engine is started to generate power, the vehicle enters a range extending mode or a hybrid mode to meet the required power and keep the battery SOC within a reasonable range, however, the control strategy does not consider the influence of the external environment on the switching of the driving mode of the vehicle, so that the control strategy cannot be effectively adjusted in real time when the vehicle runs, and the economy and comfort of the vehicle are not optimal.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. To this end, the present invention proposes a vehicle driving control method, which may.
The invention also provides a computer readable storage medium storing a corresponding vehicle driving control program of the vehicle driving control method.
The invention also provides a control system.
The invention also provides a vehicle with the control system.
A vehicle driving control method according to a first aspect of the invention includes the steps of: acquiring target route information of the vehicle and road condition information of the target route; calculating pre-marking information of the vehicle according to the target route information and the road condition information; and controlling the driving mode of the vehicle according to the pre-mark information.
According to the vehicle driving control method, the influence of the external environment of the vehicle, such as the driving road condition, on the vehicle driving mode switching is considered, so that the control strategy can be adjusted in real time when the vehicle runs, and the economy and the comfort of the vehicle are optimized as far as possible. In addition, the control strategy is continuously optimized by carrying out information fusion on relevant internal and external variables, the self-learning capability of the control algorithm is improved, and the switching of the driving modes is more reasonable and efficient.
According to some embodiments of the present invention, the obtaining the road condition information of the target route of the vehicle comprises: and acquiring at least one of road gradient information, traffic jam state information or emergency condition information of the target route.
According to some embodiments of the invention, the calculating the pre-mark information of the vehicle according to the traffic information comprises: determining target energy consumption according to the target route information and the road condition information, and calculating a discharging target SOC of the power battery according to the target energy consumption; acquiring the actual SOC of the power battery; and determining pre-mark information of the vehicle according to the actual SOC and the discharging target SOC.
According to some embodiments of the present invention, the calculating the pre-mark information of the vehicle according to the traffic information further comprises: acquiring a current driving mode of the vehicle; and determining the pre-mark information of the vehicle according to the current driving mode of the vehicle and the road condition information.
Further, the vehicle driving control method further includes: acquiring the speed information of the vehicle; and determining pre-mark information of the vehicle according to the current driving mode of the vehicle, the road condition information and the vehicle speed information.
According to some embodiments of the invention, the pre-flag information comprises: the vehicle is controlled to execute a pure electric driving mode according to the first pre-mark information; controlling the vehicle to execute a range-extending driving mode according to the second pre-mark information; and controlling the vehicle to execute a hybrid driving mode according to the third pre-mark information.
Further, the pre-flag information further includes: and maintaining pre-mark information, and controlling the vehicle to maintain the current driving mode according to the maintaining pre-mark information.
The computer-readable storage medium according to the second aspect of the invention has stored thereon a vehicle driving control program that, when executed by a processor, implements the vehicle driving control method according to the first aspect of the invention.
According to the computer-readable storage medium of the second aspect of the present invention, by storing the vehicle driving control program corresponding to the implementation of the vehicle driving control method, when the control method is applied to a control system of a vehicle, the control method can be implemented, so that the driving economy and the driving experience of the vehicle are improved.
A control system according to a third aspect of the present invention comprises: the information acquisition module is used for acquiring road condition information of a vehicle driving road section; a calculation module for calculating pre-landmark information for the vehicle; a control module to control a drive mode of the vehicle according to the pre-flag information.
According to the control system of the third aspect of the invention, the information acquisition module, the calculation module and the control module are configured into the calculation module which calculates the pre-mark information according to the road condition information acquired by the information acquisition module, and the control module controls the vehicle to be switched into the corresponding driving mode according to the pre-mark information, so that the running economy and comfort of the vehicle under special working conditions can be improved.
A vehicle according to a fourth aspect of the invention includes: a control system according to the third aspect of the invention. .
According to the vehicle provided by the invention, the control system provided by the embodiment can improve the running economy and comfort of the vehicle under special working conditions.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a schematic diagram of a vehicle driving control method according to an embodiment of a first aspect of the invention;
FIG. 2 is a control diagram of the vehicle driving control method shown in FIG. 1;
fig. 3 is a schematic diagram of a control system according to an embodiment of the third aspect of the invention.
Reference numerals:
the control system 100:
the system comprises an information acquisition module 1, a calculation module 2 and a control module 3.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
A vehicle driving control method according to an embodiment of the first aspect of the invention is described below with reference to fig. 1 to 3.
As shown in fig. 1, a vehicle driving control method according to an embodiment of a first aspect of the invention includes the steps of: acquiring target route information of a vehicle and road condition information of a target route; calculating pre-marking information of the vehicle according to the target route information and the road condition information; and controlling the driving mode of the vehicle according to the pre-mark information.
Specifically, in the driving process of the vehicle, firstly, the road condition information of the current driving route of the vehicle is obtained, for example, whether the front is traffic jam or not, whether the front road is smooth or not and the like, different pre-marking information is set for the vehicle according to different road conditions, then, the corresponding pre-marking information is obtained according to the detected actual road condition, and finally, the vehicle is controlled to switch the driving mode in advance according to the obtained pre-marking information, so that the driving mode of the vehicle is ensured to be matched with the required vehicle power output under the front road condition, and the driving economy is improved.
It can be understood that the purpose of acquiring the road condition information of the driving route of the vehicle in the embodiment is to provide a reference for the switching control strategy of the driving mode by combining the road condition information with the internal working condition of the vehicle, such as battery information and vehicle speed information, so that the control of the driving mode can be more scientific and refined.
According to the vehicle driving control method, the influence of the external environment of the vehicle, such as the driving road condition, on the vehicle driving mode switching is considered, so that the control strategy can be adjusted in real time when the vehicle runs, and the economy and the comfort of the vehicle are optimized as far as possible. In addition, the control strategy is continuously optimized by carrying out information fusion on relevant internal and external variables, the self-learning capability of the control algorithm is improved, and the switching of the driving modes is more reasonable and efficient.
According to some embodiments of the present invention, obtaining road condition information of a target route of a vehicle comprises: at least one of road grade information, traffic jam state information, or emergency condition information of the target route is acquired.
Preferably, the road gradient information, the traffic congestion state information, or the emergency condition information of the target route may be acquired at the same time, and for example, the road gradient information may include: whether the front road section has a climbing or descending road section or the gradient of the road; the traffic congestion status information may include: whether a traffic jam exists in a front road section or not, the length of the traffic jam road section and the required time estimated through the traffic jam road section are judged; the burst status information may include: whether the weather changes suddenly or not, road condition deterioration caused by weather changes, mountain landslide blocking of roads and the like are facilitated, and the driving mode can be adjusted in time by combining the vehicle with the vehicle condition, so that the adjustment is more scientific and fine.
Further, the road condition information of the target route can be acquired through means such as a navigation system, weather broadcast or traffic broadcast.
According to some embodiments of the present invention, calculating the pre-mark information of the vehicle according to the traffic information comprises: determining target energy consumption according to the target route information and the road condition information, and calculating a discharging target SOC of the power battery according to the target energy consumption; acquiring the actual SOC of the power battery; and determining pre-mark information of the vehicle according to the actual SOC and the discharging target SOC.
That is, after obtaining the road condition information of the front road section, the energy consumption approximately required by the vehicle to pass through the front road section may be calculated, for example, if the vehicle is an electric vehicle, the power consumption required by the vehicle to pass through the front road section (i.e., the above-mentioned discharging target SOC) may be approximately estimated, then the current power consumption of the vehicle (i.e., the above-mentioned actual SOC) may be obtained, and the pre-flag information of the vehicle may be determined by combining the current power consumption and the estimated power consumption, so that the switching control decision of the driving mode may be more scientific.
According to some embodiments of the present invention, calculating the pre-mark information of the vehicle according to the traffic information may further include: acquiring a current driving mode of a vehicle; and determining the pre-mark information of the vehicle according to the current driving mode and the road condition information of the vehicle.
Therefore, by combining the current driving mode of the vehicle, whether the driving mode of the vehicle needs to be switched under the condition of meeting the road condition can be judged, for example, when the current driving mode of the vehicle is the range extending mode and the road in front is a climbing road section, the range extending mode can just provide enough output power to enable the vehicle to run on the road section, if the current driving mode of the vehicle is judged to be the range extending mode, the driving mode does not need to be changed, and only the current state needs to be maintained.
Further, the vehicle driving control method may further include: acquiring vehicle speed information of a vehicle; and determining the pre-mark information of the vehicle according to the current driving mode, the road condition information and the vehicle speed information of the vehicle.
For example, the current driving mode is a range extending mode, when the vehicle speed is higher than m, the vehicle can be controlled to be switched to a hybrid mode, the range of m is 60-90, and the unit is km/h, so that the scientificity of decision for switching the driving mode of the vehicle can be further improved.
According to some embodiments of the invention, the pre-flag information comprises: the first pre-mark information, the second pre-mark information and the third pre-mark information control the vehicle to execute a pure electric driving mode according to the first pre-mark information; controlling the vehicle to execute a range-extending driving mode according to the second pre-mark information; and controlling the vehicle to execute the hybrid driving mode according to the third pre-mark information.
For example, the first pre-flag information may be a first pre-flag bit 1, the second pre-flag information may be a second pre-flag bit 2, and the third pre-flag information may be a third pre-flag bit 3, although the pre-flag bits are not limited to be represented by arabic numerals, but may also be represented by english letters, for example, the first pre-flag information may also be a first pre-flag bit a, the second pre-flag information may also be a second pre-flag bit B, and the third pre-flag information may also be a third pre-flag bit C.
When the first pre-flag information is a first pre-flag bit 1, controlling the vehicle to be switched to a pure electric driving mode, and certainly, when the current driving mode is the pure electric driving mode, the vehicle does not need to be switched; when the second pre-marking information is a second pre-marking position 2, controlling the vehicle to be switched to a range-extending driving mode, and certainly not needing to be switched when the current driving mode is the range-extending driving mode; and when the third pre-marking information is the third pre-marking bit 3, controlling the vehicle to be switched to the hybrid driving mode, wherein the current driving mode is not required to be switched when the current driving mode is the hybrid driving mode.
Further, the pre-flag information further includes: and maintaining the pre-mark information, and controlling the vehicle to maintain the current driving mode according to the pre-mark maintaining information.
Here, the pre-flag maintaining information may be a pre-flag maintaining bit 0, and when the pre-flag of the vehicle is 0, the vehicle is controlled to maintain the current driving mode.
For example, if the front driving road section of the vehicle is a straight road section and has no traffic jam, outputting the first pre-flag bit as 0, and controlling the vehicle to continue driving according to the current driving mode;
if the front driving road section of the vehicle is a climbing road section and/or a traffic jam road section appears on the front driving road section of the vehicle, and the actual electric quantity of the vehicle is enough to support the vehicle to pass through the front road section in a pure electric mode, outputting a first pre-flag bit as 1, and controlling the driving mode of the vehicle to be switched to the pure electric mode;
if the front driving road section of the vehicle is a climbing road section and/or the front driving road section of the vehicle is in a traffic jam state, and the actual electric quantity of the vehicle cannot sufficiently support the vehicle to completely pass through the front road section in a pure electric mode, outputting a second pre-flag bit of 2, and controlling the driving mode of the vehicle to be switched to a range-extending mode;
if the fact that the speed of the vehicle in the current road section and the current mode is higher than 70Km/h is detected, the third pre-marker bit 3 is output, the vehicle is switched to the hybrid mode, the engine charges the battery and drives the vehicle to run at the same time, and therefore the fact that the vehicle runs in the pure electric driving mode through enough electric quantity support when passing through the front road section is guaranteed.
One specific embodiment of the vehicle driving control method according to the first aspect of the invention is described below.
In the first embodiment, the first step is,
in the driving process of the vehicle, the information acquisition module acquires road condition information of a current driving road section of the vehicle in real time, if the information acquisition module acquires that no traffic jam exists within five kilometers in front of the vehicle, the information acquisition module outputs a maintenance flag bit 0, and the vehicle keeps a current driving mode to continue driving.
When the situation that a traffic jam occurs on a road section in front of the vehicle is obtained, whether the actual SOC of the current battery can meet the requirement that the pure electric driving of the vehicle is completed until the traffic jam is finished is estimated through relevant input variables (the distance from the vehicle to a traffic jam starting point, the distance needing to be driven in the traffic jam process and the actual SOC of the battery).
If the fact that the power consumption (discharging target SOC) required by the vehicle to pass through the front traffic jam road section is lower than the current actual power consumption (actual SOC) of the vehicle is detected, the first pre-flag bit 1 is output, and the vehicle can be switched to a pure electric mode.
And if the power consumption (discharge target SOC) required by the vehicle passing through the front traffic jam road section is higher than the current actual power of the vehicle, outputting a second pre-marker bit 2, switching the vehicle to the range extending mode, and starting the engine to charge the battery in advance.
When the vehicle runs in the range extending mode, if the vehicle speed is judged to be higher than 70Km/h, the third pre-marker bit 3 is output, the vehicle is switched to the hybrid mode, and the engine charges the battery and drives the vehicle to run. The battery is charged in advance, so that the actual SOC of the battery can meet the requirement that the vehicle is driven in a pure electric mode under the traffic jam working condition as far as possible, and the vehicle is prevented from running in a range-extending mode or a hybrid mode (because the range-extending mode and the hybrid mode have no good economy and comfort of the pure electric mode under the condition of low vehicle speed).
In the second embodiment, the first embodiment of the method,
if the information acquisition module acquires that the road section in front of the vehicle has no uphill or downhill road condition, the maintenance zone bit 0 is output, and the vehicle is controlled to maintain the current driving mode.
When the uphill working condition or the downhill working condition is obtained on a road section in front of the vehicle and the slope distance is long, before the vehicle ascends or descends, whether the actual electric quantity of the battery can meet the requirement of outputting enough driving power is judged by combining internal and external information when the vehicle ascends or descends, if the current actual electric quantity of the vehicle can output enough driving power to drive the vehicle to ascend, a maintenance mark bit 1 is output, and the vehicle is controlled to be switched to a pure electric driving mode.
And if the current actual electric quantity of the vehicle cannot output the driving power required by the vehicle climbing, outputting a second pre-marker bit 2 to control the vehicle to enter a range extending mode in advance so as to charge the vehicle.
When the vehicle runs in the range extending mode, if the vehicle speed is judged to be higher than 70Km/h, the third pre-marker bit 3 is output, the vehicle is switched to the hybrid mode, and the engine charges the battery and drives the vehicle to run.
Further, if the front road section is a downhill road section, if the current vehicle is in a pure electric mode, outputting a maintenance flag bit 0, and continuously keeping the vehicle to be driven in the current driving mode; if the current vehicle is in the range extending mode and the electric quantity is more than 60% and less than 80%, outputting a first pre-flag bit 1, and switching the vehicle to a pure electric mode so as to reserve sufficient allowance for recovering electric energy from braking energy; if the current vehicle is in the hybrid mode, outputting a maintenance flag bit 0, and controlling the vehicle to continuously keep driving in the current mode.
A computer-readable storage medium according to a second aspect of the invention is described below.
The computer-readable storage medium according to the second aspect of the invention has stored thereon a vehicle driving control program that, when executed by a processor, implements the vehicle driving control method as according to the first aspect of the invention.
According to the computer-readable storage medium of the second aspect of the present invention, by storing the vehicle driving control program corresponding to the implementation of the vehicle driving control method, when the control method is applied to a control system of a vehicle, the control method can be implemented, so that the driving economy and the driving experience of the vehicle are improved.
A control system 100 according to a third aspect of the invention is described below.
The control system 100 according to the third aspect of the present invention comprises: the device comprises an information acquisition module 1, a calculation module 2 and a control module 3. The information obtaining module 1 is configured to obtain road condition information of a driving road section of the vehicle, for example, the road condition information may include: at least one of road grade information, traffic jam state information, or emergency condition information of the target route; the calculation module 2 is used for calculating the pre-marking information of the vehicle, and the calculation module 2 can calculate the pre-marking information of the vehicle by combining the road condition information and the internal working conditions of the vehicle, such as battery information and vehicle speed information; the control module 3 is used for controlling the vehicle to switch to the driving mode corresponding to each pre-mark information according to the pre-mark information.
For example, the pre-flag information may include: the pre-flag information, the first pre-flag information, the second pre-flag information, and the third pre-flag information are maintained. Controlling the vehicle to maintain the current driving mode according to the maintenance pre-mark information, and controlling the vehicle to execute the pure electric driving mode according to the first pre-mark information; controlling the vehicle to execute a range-extending driving mode according to the second pre-mark information; and controlling the vehicle to execute the hybrid driving mode according to the third pre-mark information.
According to the control system 100 of the third aspect of the present invention, the information obtaining module 1, the calculating module 2 and the control module 3 are configured such that the calculating module 2 calculates the pre-flag information according to the road condition information obtained by the information obtaining module 1, and the control module 3 controls the vehicle to switch to the corresponding driving mode according to the pre-flag information, so as to improve the economy and comfort of the vehicle in operation under the special working conditions.
A vehicle according to a fourth aspect of the invention is described below.
A vehicle according to a fourth aspect of the invention includes: the control system 100 according to the above embodiment.
According to the vehicle provided by the invention, the economical efficiency and the comfort of the vehicle in the special working condition can be improved by arranging the control system 100 of the embodiment.
Other configurations and operations of vehicles according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean 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 invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer 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, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A vehicle driving control method characterized by comprising the steps of:
acquiring target route information of the vehicle and road condition information of the target route;
calculating pre-marking information of the vehicle according to the target route information and the road condition information;
and controlling the driving mode of the vehicle according to the pre-mark information.
2. The vehicle driving control method according to claim 1, wherein obtaining road condition information of the target route of the vehicle comprises:
and acquiring at least one of road gradient information, traffic jam state information or emergency condition information of the target route.
3. The vehicle driving control method according to claim 1, wherein the calculating pre-tag information of the vehicle according to the road condition information includes:
determining target energy consumption according to the target route information and the road condition information, and calculating a discharging target SOC of the power battery according to the target energy consumption;
acquiring the actual SOC of the power battery;
and determining pre-mark information of the vehicle according to the actual SOC and the discharging target SOC.
4. The vehicle driving control method according to claim 1, wherein the calculating pre-tag information of the vehicle according to the road condition information further comprises:
acquiring a current driving mode of the vehicle;
and determining the pre-mark information of the vehicle according to the current driving mode of the vehicle and the road condition information.
5. The vehicle driving control method according to claim 4, characterized by further comprising:
acquiring the speed information of the vehicle;
and determining pre-mark information of the vehicle according to the current driving mode of the vehicle, the road condition information and the vehicle speed information.
6. The vehicular drive control method according to claim 1, characterized in that the pre-flag information includes:
first pre-flag information, second pre-flag information, and third pre-flag information,
controlling the vehicle to execute a pure electric drive mode according to the first pre-mark information;
controlling the vehicle to execute a range-extending driving mode according to the second pre-mark information;
and controlling the vehicle to execute a hybrid driving mode according to the third pre-mark information.
7. The vehicle driving control method according to claim 6, characterized in that the pre-flag information further includes:
and maintaining pre-mark information, and controlling the vehicle to maintain the current driving mode according to the maintaining pre-mark information.
8. A computer-readable storage medium, characterized in that a vehicle driving control program is stored thereon, which when executed by a processor implements the vehicle driving control method according to any one of claims 1 to 7.
9. A control system, comprising:
the information acquisition module is used for acquiring road condition information of a vehicle driving road section;
a calculation module for calculating pre-landmark information for the vehicle;
a control module to control a drive mode of the vehicle according to the pre-flag information.
10. A vehicle, characterized by comprising: the control system of claim 9.
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