CN115476698A - Control method and device of vehicle power system and vehicle - Google Patents
Control method and device of vehicle power system and vehicle Download PDFInfo
- Publication number
- CN115476698A CN115476698A CN202210896313.4A CN202210896313A CN115476698A CN 115476698 A CN115476698 A CN 115476698A CN 202210896313 A CN202210896313 A CN 202210896313A CN 115476698 A CN115476698 A CN 115476698A
- Authority
- CN
- China
- Prior art keywords
- mode
- vehicle
- information
- wheel drive
- switching
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
- B60L15/2045—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed for optimising the use of energy
Abstract
The invention discloses a control method and device of a vehicle power system and a vehicle. Wherein, the method comprises the following steps: acquiring historical starting information of a vehicle; controlling the vehicle to enter an initial mode in response to the historical starting information meeting a preset condition; acquiring acceleration intention information of a driver under the condition that the vehicle is in an initial mode, wherein the acceleration intention information comprises at least one of the following: weak, medium, and strong acceleration intents; generating a control instruction set based on the acceleration intention information and the initial mode of the vehicle, wherein the control instruction set is used for controlling a power system of the vehicle to execute a mode switching strategy, and the mode switching strategy comprises at least one of the following steps: maintaining the current driving mode, switching to the four-wheel drive mode, switching to the two-wheel drive strong power mode, switching to the two-wheel drive normal mode and switching to the two-wheel drive economic mode. The invention solves the technical problem of reduction of the driving range of the pure electric vehicle due to the improvement of the power performance of the pure electric vehicle.
Description
Technical Field
The invention relates to the technical field of vehicle driving, in particular to a control method and device of a vehicle power system and a vehicle.
Background
With the development of pure electric vehicles, in order to pursue better dynamic property, a plurality of vehicle types all adopt a four-wheel drive scheme, namely a front electric drive system and a rear electric drive system are respectively adopted.
When the power performance of the pure electric vehicle is improved, the contradiction relation between high power and low energy consumption is faced, when the vehicle is matched with a power system with larger torque and power, the power performance is enhanced, but the driving range under the condition of consuming the same energy can be reduced.
In view of the above problems, no effective solution has been proposed.
Disclosure of Invention
The embodiment of the invention provides a control method and device of a vehicle power system and a vehicle, and aims to at least solve the technical problem that the driving range of a pure electric vehicle is reduced due to the improvement of the power performance of the pure electric vehicle.
According to an aspect of an embodiment of the present invention, there is provided a control method of a vehicle power system, including: acquiring historical starting information of the vehicle, wherein the historical starting information comprises starting mode information, first time information and second time information, the starting mode information is used for indicating that the vehicle generates when the last manual selection is carried out, the first time information is used for indicating that the two-wheel-drive strong power mode is manually selected within a first preset time period, and the second time information is used for indicating that the two-wheel-drive normal mode is manually selected within the first preset time period; controlling the vehicle to enter an initial mode in response to the historical starting information meeting a preset condition, wherein the initial mode comprises at least one of the following modes: a two-drive high power mode and a two-drive normal mode; acquiring acceleration intention information of a driver under the condition that a vehicle is in an initial mode, wherein the acceleration intention information comprises at least one of the following information: weak, medium and strong acceleration intents; generating a control instruction set based on the acceleration intention information and the initial mode of the vehicle, wherein the control instruction set is used for controlling a power system of the vehicle to execute a mode switching strategy, and the mode switching strategy comprises at least one of the following steps: maintaining the current driving mode, switching to the four-wheel drive mode, switching to the two-wheel drive strong power mode, switching to the two-wheel drive normal mode and switching to the two-wheel drive economic mode.
Optionally, in response to the historical start information satisfying a preset condition, controlling the vehicle to enter an initial mode, including: judging whether the starting mode information generated when the vehicle executes the last manual selection is information for starting in a two-wheel-drive strong power mode or information for starting in a two-wheel-drive normal mode; and if so, controlling the vehicle to enter a two-drive strong power mode or a two-drive normal mode corresponding to the starting mode information.
Optionally, in response to the historical start information satisfying a preset condition, controlling the vehicle to enter an initial mode, including: judging whether the starting mode information generated when the vehicle executes the last manual selection is information for starting in a two-wheel-drive strong power mode or information for starting in a two-wheel-drive normal mode; if not, judging whether the times value in the first times information is larger than or equal to the times value in the second times information; and if so, controlling the vehicle to enter a two-drive strong power mode.
Optionally, in a case where the vehicle is in the initial mode, acquiring acceleration intention information of the driver includes: collecting an opening degree value of an accelerator pedal and an opening degree change rate of the accelerator pedal; comparing the opening degree value of the accelerator pedal with an opening degree threshold value to obtain a first comparison result; comparing the opening change rate of the accelerator pedal with a change rate threshold value to obtain a second comparison result; and combining the first comparison result and the second comparison result to determine the acceleration intention information.
Optionally, generating a set of control instructions based on the acceleration intent information and an initial mode in which the vehicle is located, comprising: judging whether the acceleration intention information is weak or not under the condition that the vehicle is in a two-wheel drive strong power mode; if so, generating a first target command in the control command set, wherein the first target command is used for controlling a power system of the vehicle to execute a strategy for maintaining the current driving mode.
Optionally, the generating of the control instruction set based on the acceleration intention information and the initial mode of the vehicle further comprises: judging whether the acceleration intention information is weak or not under the condition that the vehicle is in a two-wheel drive strong power mode; and if not, generating a second target instruction in the control instruction set, wherein the second target instruction is used for controlling a power system of the vehicle to execute a strategy for switching to the four-wheel drive mode.
Optionally, the generating of the control instruction set based on the acceleration intention information and the initial mode of the vehicle further comprises: after the vehicle is switched from the two-wheel-drive strong power mode to the four-wheel-drive mode, judging whether the driving demand torque of a driver is greater than a first torque threshold value, wherein the first torque threshold value is the torque provided by a power system when the vehicle is in the four-wheel-drive mode; and if not, generating a third target instruction in the control instruction set, wherein the third target instruction is used for controlling the power system of the vehicle to execute a strategy for switching to the two-wheel-drive strong power mode.
Optionally, generating a control instruction set based on the acceleration intention information and the initial mode of the vehicle, further comprising: under the condition that the vehicle is in a two-wheel drive strong power mode, judging whether the vehicle is in a high-speed or express way area; if so, judging whether the average speed of the vehicle in a second preset time length is greater than the preset speed or not; and if so, generating a fourth target instruction in the control instruction set, wherein the fourth target instruction is used for controlling a power system of the vehicle to execute a strategy for switching to the two-wheel-drive economic mode.
According to another aspect of the embodiments of the present invention, there is also provided a control apparatus of a vehicle power system, including: the vehicle starting control device comprises a first obtaining module and a second obtaining module, wherein the first obtaining module is used for obtaining historical starting information of a vehicle, and the historical starting information comprises: the system comprises starting mode information used for representing the starting mode generated when the vehicle performs the last manual selection, first time information used for representing that the two-wheel drive strong power mode is manually selected within a first preset time period, and second time information used for representing that the two-wheel drive normal mode is manually selected within the first preset time period; the control module is used for responding to the fact that the historical starting information meets preset conditions, and controlling the vehicle to enter an initial mode, wherein the initial mode comprises at least one of the following modes: a two-drive high power mode and a two-drive normal mode; a second obtaining module, configured to obtain acceleration intention information of the driver when the vehicle is in an initial mode, where the acceleration intention information includes at least one of: weak, medium, and strong acceleration intents; the generating module is used for generating a control instruction set based on the acceleration intention information and the initial mode of the vehicle, and the control instruction set is used for controlling a power system of the vehicle to execute a mode switching strategy, wherein the mode switching strategy comprises at least one of the following steps: maintaining the current driving mode, switching to the four-wheel drive mode, switching to the two-wheel drive strong power mode, switching to the two-wheel drive normal mode and switching to the two-wheel drive economic mode.
According to another aspect of the embodiments of the present invention, there is also provided a vehicle, including a memory having a computer program stored therein and a processor configured to execute the computer program to perform the above method.
According to another aspect of the embodiments of the present invention, there is also provided a computer storage medium including a stored program, where the program is executed to control an apparatus in which the computer storage medium is located to perform the above method.
According to another aspect of the embodiments of the present invention, there is also provided a processor for executing a program, the processor being configured to execute a computer program to perform the above method.
In the embodiment of the invention, the vehicle is controlled to enter the initial mode, namely the starting mode of the vehicle, according to the historical starting information, the driving mode of the vehicle is controlled to be automatically switched in real time according to the determined initial mode and the acceleration intention information of the driver, the energy consumption is reduced on the basis of meeting the driving requirement, and the technical problem that the driving range of the pure electric vehicle is reduced due to the improvement of the power performance of the pure electric vehicle is solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention and do not constitute a limitation of the invention. In the drawings:
FIG. 1 is a block diagram of the hardware architecture of a vehicle electronics unit of a method of controlling a vehicle powertrain system in accordance with an alternate embodiment of the present invention;
FIG. 2 is a flow chart of a method of controlling a vehicle powertrain according to an alternative embodiment of the present invention;
FIG. 3 is a block diagram of a four-drive power system according to an alternative embodiment of the present invention;
fig. 4 is a block diagram of an alternative control arrangement for a vehicle powertrain, in accordance with an embodiment of the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In accordance with an embodiment of the present invention, there is provided an embodiment of a method for controlling a vehicle powertrain, wherein the steps illustrated in the flowchart of the figure may be performed in a computer system, such as a set of computer executable instructions, and wherein, although a logical ordering is illustrated in the flowchart, in some cases, the steps illustrated or described may be performed in an order different than that illustrated herein.
The method embodiments may be performed in an electronic device or similar computing device that includes a memory and a processor in a vehicle. Taking the example of an electronic device operating on a vehicle, as shown in fig. 1, the electronic device of the vehicle may include one or more processors 102 (the processors may include, but are not limited to, central Processing Units (CPUs), graphics Processing Units (GPUs), digital Signal Processing (DSP) chips, microprocessors (MCUs), programmable logic devices (FPGAs), neural Network Processors (NPUs), tensor Processors (TPUs), artificial Intelligence (AI) type processors, etc.) and a memory 104 for storing data. Optionally, the electronic apparatus of the automobile may further include a transmission device 106, an input-output device 108, and a display device 110 for communication functions. It will be understood by those skilled in the art that the structure shown in fig. 1 is merely an illustration and is not intended to limit the structure of the electronic device of the vehicle. For example, the electronic device of the vehicle may also include more or fewer components than described above, or have a different configuration than described above.
The memory 104 may be used to store computer programs, such as software programs and modules of application software, for example, computer programs corresponding to the control method of the vehicle power system in the embodiment of the present invention, and the processor 102 executes various functional applications and data processing by running the computer programs stored in the memory 104, so as to implement the control method of the vehicle power system described above. The memory 104 may include high speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include memory located remotely from the processor 102, which may be connected to the mobile terminal over a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The transmission device 106 is used for receiving or transmitting data via a network. Specific examples of the network described above may include a wireless network provided by a communication provider of the mobile terminal. In one example, the transmission device 106 includes a Network adapter (NIC), which can be connected to other Network devices through a base station so as to communicate with the internet. In one example, the transmission device may be a Radio Frequency (RF) module, which is used for communicating with the internet in a wireless manner.
The display device 110 may be, for example, a touch screen type Liquid Crystal Display (LCD) and a touch display (also referred to as a "touch screen" or "touch display screen"). The liquid crystal display may enable a user to interact with a user interface of the mobile terminal. In some embodiments, the mobile terminal has a Graphical User Interface (GUI) with which a user can interact by touching finger contacts and/or gestures on a touch-sensitive surface, where the human-machine interaction function optionally includes the following interactions: executable instructions for creating web pages, drawing, word processing, making electronic documents, games, video conferencing, instant messaging, emailing, call interfacing, playing digital video, playing digital music, and/or web browsing, etc., for performing the above-described human-computer interaction functions, are configured/stored in one or more processor-executable computer program products or readable storage media.
In the present embodiment, a method for operating the control of the vehicle power system is provided, and fig. 2 is a flowchart of a control method of the vehicle power system according to an embodiment of the invention, as shown in fig. 2, the flowchart includes the following steps: step S1: the method comprises the steps of obtaining historical starting information of a vehicle, wherein the historical starting information comprises starting mode information used for representing that the vehicle generates when the last manual selection is carried out, first time information used for representing that a two-wheel drive strong power mode is manually selected within a first preset time period, and second time information used for representing that a two-wheel drive normal mode is manually selected within the first preset time period. Step S2: controlling the vehicle to enter an initial mode in response to the historical starting information meeting a preset condition, wherein the initial mode comprises at least one of the following modes: a two-drive high power mode and a two-drive normal mode. And step S3: acquiring acceleration intention information of a driver under the condition that the vehicle is in an initial mode, wherein the acceleration intention information comprises at least one of the following: weak acceleration intention, moderate acceleration intention, and strong acceleration intention. And step S4: generating a control instruction set based on the acceleration intention information and the initial mode of the vehicle, wherein the control instruction set is used for controlling a power system of the vehicle to execute a mode switching strategy, and the mode switching strategy comprises at least one of the following steps: maintaining the current driving mode, switching to the four-wheel drive mode, switching to the two-wheel drive strong power mode, switching to the two-wheel drive normal mode and switching to the two-wheel drive economic mode. The first preset duration is set according to the frequency of the vehicle use.
In the embodiment of the application, the vehicle is controlled to enter the initial mode according to the historical starting information, namely the starting mode of the vehicle, the vehicle driving mode is controlled to be automatically switched in real time according to the determined initial mode and the acceleration intention information of the driver, the energy consumption is reduced on the basis of meeting the driving requirement, and the technical problem that the driving range of the pure electric vehicle is reduced due to the improvement of the power performance of the pure electric vehicle is solved.
In step S2, in response to the historical start-up information satisfying a preset condition, the vehicle is controlled to enter an initial mode including: judging whether the starting mode information generated when the vehicle performs the last manual selection is the information of starting in a two-wheel drive strong power mode or the information of starting in a two-wheel drive normal mode; and if so, controlling the vehicle to enter a two-drive strong power mode or a two-drive normal mode corresponding to the starting mode information.
In the above steps, the initial mode of the vehicle at the time of automatic driving is determined according to the start mode manually selected by the driver last time to adapt to the driving habits of the driver and the power demand at the time of start.
In step S2, in response to the historical start information satisfying a preset condition, the vehicle is controlled to enter an initial mode, including: judging whether the starting mode information generated when the vehicle executes the last manual selection is information for starting in a two-wheel-drive strong power mode or information for starting in a two-wheel-drive normal mode; if not, judging whether the times value in the first times information is larger than or equal to the times value in the second times information; and if so, controlling the vehicle to enter a two-drive strong power mode.
It should be noted that the motor executing the two-drive strong power mode and the motor executing the two-drive normal mode are not the same motor, and power interruption occurs when power is switched between the front and rear motors, so that the two-drive normal mode and the two-drive strong power mode cannot be switched, the two-drive normal mode can be switched to the four-drive mode only, and the two-drive strong power mode can be switched to the two-drive economic mode or the four-drive mode. In order to enable switching between the two-wheel drive normal mode, the two-wheel drive strong power mode, the four-wheel drive mode, and the two-wheel drive economy mode, the initial mode of the automatic driving is set to two modes, namely the two-wheel drive normal mode and the two-wheel drive strong power mode.
In the steps, the initial mode of the vehicle during automatic driving is determined according to the frequency information of the two-wheel drive strong power mode and the two-wheel drive normal mode which are manually selected by the driver within the first preset time length, and the switching of the four driving modes can be realized under the condition of meeting the driving habits and the starting power requirements of the driver.
In step S3, in a case where the vehicle is in the initial mode, acceleration intention information of the driver is acquired, including: collecting an opening degree value of an accelerator pedal and an opening degree change rate of the accelerator pedal; comparing the opening degree value of the accelerator pedal with an opening degree threshold value to obtain a first comparison result; comparing the opening change rate of the accelerator pedal with a change rate threshold value to obtain a second comparison result; and combining the first comparison result and the second comparison result to determine the acceleration intention information.
During non-autonomous driving, the driver controls the traveling speed of the vehicle, i.e., the power output of the engine, by pressing the accelerator pedal. During automatic driving, the acceleration intention of the driver is judged according to the opening degree value of the accelerator pedal and the opening degree change rate of the accelerator pedal, and then the switching of the driving mode is controlled.
In the above steps, the comparison relationship among the opening degree value of the accelerator pedal, the opening degree change rate of the accelerator pedal, and the acceleration intention information constitutes the driver intention fuzzy control model. Since the accelerator pedal is used for controlling the running speed of the vehicle in the non-automatic driving process, the mode of indicating the acceleration intention by stepping on the accelerator pedal is consistent with the driving habit of the driver, so that the output of the driver intention fuzzy control model is more accurate. The opening degree threshold and the change rate threshold are set in accordance with four driving modes and the driving habit of the driver.
Specifically, the driver intention fuzzy control model is exemplified, and the input variables of the driver fuzzy control model mainly have the following indexes: accelerator pedal opening L and rate of change K of accelerator pedal opening.
By normalizing the input variation parameter with a large amount of real vehicle operation data, the accelerator pedal opening L itself can be reduced to the range variation in the [0,1], and the pedal variation rate K reduces the maximum value appearing in the real vehicle operation data to 1, and causes the maximum value to vary between [0,1 ].
The pedal displacement value L can be classified into three categories: l1, L2 and L3, the value range of L1 is [0,0.3 ], the value range of L2 is [0.3,0.6 ], and the value range of L3 is [0.6,1]. The pedal change rate K can be classified into three categories: k1 K2 and K3, K1 is in the value range of [0,0.3 ], K2 is in the value range of [0.3,0.6 ], and K3 is in the value range of [0.6,1].
The driver intention fuzzy control model is drawn into a table, namely table 1, and the acceleration intention of the driver is determined according to the table 1.
TABLE 1
| Parameter(s) | L1 | L2 | L3 |
| K1 | Weak intention to accelerate | In intention of acceleration | Strong intention of acceleration |
| K2 | In intention of acceleration | In intention of acceleration | Strong intention of acceleration |
| K3 | Strong intention of acceleration | Strong intention to accelerate | Strong intention of acceleration |
At step S4, based on the acceleration intention information and the initial mode in which the vehicle is located, a control instruction set is generated including: judging whether the acceleration intention information is weak or not under the condition that the vehicle is in a two-wheel drive strong power mode; if so, generating a first target command in the control command set, wherein the first target command is used for controlling a power system of the vehicle to execute a strategy for maintaining the current driving mode.
In the above steps, the weak intention to accelerate indicates that the current running speed of the vehicle substantially meets the driver's demanded speed, so the current driving mode may be maintained.
In step S4, a control instruction set is generated based on the acceleration intention information and the initial mode in which the vehicle is located, further including: judging whether the acceleration intention information is weak or not under the condition that the vehicle is in a two-wheel drive strong power mode; and if not, generating a second target instruction in the control instruction set, wherein the second target instruction is used for controlling a power system of the vehicle to execute a strategy for switching to the four-wheel drive mode.
In the above steps, the vehicle is in the two-wheel drive strong power mode, and if the current running speed cannot meet the speed required by the driver, it indicates that the maximum power provided by the two-wheel drive mode cannot meet the driving requirement, and the vehicle needs to be switched to the four-wheel drive mode.
In step S4, a control instruction set is generated based on the acceleration intention information and the initial mode in which the vehicle is located, further including: after the vehicle is switched from the two-wheel-drive strong power mode to the four-wheel-drive mode, judging whether the driving demand torque of a driver is greater than a first torque threshold value, wherein the first torque threshold value is the torque provided by a power system when the vehicle is in the four-wheel-drive mode; and if not, generating a third target instruction in the control instruction set, wherein the third target instruction is used for controlling the power system of the vehicle to execute a strategy for switching to the two-wheel-drive strong power mode.
In the above steps, the driver driving demand torque is less than or equal to the torque threshold, which indicates that the power provided by the four-wheel drive mode exceeds the demand power, and the two-wheel drive mode needs to be switched to in order to reduce energy consumption. The vehicle is switched from the two-wheel-drive strong power mode to the four-wheel-drive mode, so that the four-wheel-drive mode is recovered to the two-wheel-drive strong power mode, and the driving habit of a driver is met.
In step S4, a control instruction set is generated based on the acceleration intention information and the initial mode in which the vehicle is located, further including: under the condition that the vehicle is in a two-wheel drive strong power mode, judging whether the vehicle is in a high-speed or express way area; if so, judging whether the average speed of the vehicle in a second preset time length is greater than the preset speed or not; and if so, generating a fourth target instruction in the control instruction set, wherein the fourth target instruction is used for controlling a power system of the vehicle to execute a strategy for switching to the two-wheel-drive economic mode.
In the above steps, only the two-wheel drive high power mode can be switched to the two-wheel drive economic mode, and at the same time, the two-wheel drive economic mode can play a large economic role only when the vehicle is running at a high speed, so that whether the vehicle is in a high speed or an expressway area and whether the speed exceeds a preset speed needs to be judged.
In step S4, a control instruction set is generated based on the acceleration intention information and the initial mode in which the vehicle is located, further including: judging whether the acceleration intention information is weak or not under the condition that the vehicle is in a two-wheel drive normal mode; and if so, generating a fifth target instruction in the control instruction set, wherein the fifth target instruction is used for controlling a power system of the vehicle to execute a strategy for maintaining the current driving mode.
In step S4, a control instruction set is generated based on the acceleration intention information and the initial mode in which the vehicle is located, further including: judging whether the acceleration intention information is weak or not under the condition that the vehicle is in a two-wheel drive normal mode; and if not, generating a sixth target instruction in the control instruction set, wherein the sixth target instruction is used for controlling the power system of the vehicle to execute a strategy of switching to the four-wheel drive mode.
In step S4, a control instruction set is generated based on the acceleration intention information and the initial mode in which the vehicle is located, further including: after the vehicle is switched from the two-wheel drive normal mode to the four-wheel drive mode, judging whether the driving demand torque of a driver is greater than a second torque threshold value, wherein the second torque threshold value is the torque provided by a power system when the vehicle is in the four-wheel drive mode; and if not, generating a seventh target instruction in the control instruction set, wherein the seventh target instruction is used for controlling the power system of the vehicle to execute a strategy for switching to the two-wheel-drive normal mode.
An embodiment of the present application further provides a four-wheel drive system, fig. 3 is a block diagram of a four-wheel drive system, and as shown in fig. 3, the system includes a front drive system and a rear drive system, the front drive system mainly includes a first motor 1, a differential 2 and a clutch 3, and the rear drive system mainly includes a second motor 4 and a differential 2. The four-drive-force system has four drive modes: a two-drive normal mode, a two-drive high-power mode, a two-drive economy mode, and a four-drive mode. Wherein, the driving motor of the two-wheel normal mode is the first motor 1. The driving motor of the two-wheel strong power mode and the two-wheel economic mode is a second motor 4, the second motor 4 is in transmission connection with a speed changer, and the speed changer has three gears: first gear, second gear, and neutral.
When the four-wheel drive system is in the two-wheel drive normal mode, the clutch 3 is closed, the first motor 1 works alone, and the transmission corresponding to the second motor 4 is in a neutral gear.
When the four-wheel drive power system is in the two-wheel drive strong power mode, the clutch 3 is disconnected, the second motor 4 works alone, and the transmission corresponding to the second motor 4 is in a first gear.
When the four-wheel drive power system is in the two-wheel drive strong power mode, the clutch 3 is disconnected, the second motor 4 works alone, and the transmission corresponding to the second motor 4 is in the second gear.
When the four-wheel drive system is in the four-wheel drive mode, the clutch 3 is closed, and the first motor 1 and the second motor 4 work simultaneously. The four-wheel drive mode has two gears, that is, a four-wheel drive high-speed gear when the transmission corresponding to the second electric machine 4 is in a first gear, and a four-wheel drive low-speed gear when the transmission corresponding to the second electric machine 4 is in a second gear.
The situation of discontinuous power can occur when the power is switched between the first motor 1 and the second motor 4, so that the two-wheel-drive strong power mode and the two-wheel-drive normal mode and the two-wheel-drive economic mode and the two-wheel-drive normal mode cannot be switched, namely, the two-wheel-drive normal mode can only be switched to the four-wheel-drive mode, and the two-wheel-drive strong power mode can be switched to the two-wheel-drive economic mode or the four-wheel-drive mode.
It should be noted that when the four-wheel drive mode is switched to the two-wheel drive strong power mode, the clutch is changed from the engaged state to the disengaged state, and during this period, the first electric machine 1 should properly adjust the torque to avoid power interruption. When the four-wheel drive mode is switched to the two-wheel drive normal mode, the transmission corresponding to the second motor 4 is gradually downshifted until entering a neutral gear, and during the period, the first motor 1 properly adjusts the torque to avoid power interruption.
In the above embodiment, when the acceleration intention information is that the acceleration intention is strong, the two-drive strong power mode or the two-drive normal mode is switched to the four-drive mode, and at the same time, the transmission corresponding to the second motor should be quickly engaged in the first gear.
Specifically, the process of switching from the two-drive normal mode to the four-drive mode is as follows: under the condition that the vehicle is in the two-wheel drive normal mode, the acceleration intention information is in the acceleration intention, the four-drive system is controlled to enter the four-wheel drive mode, namely the transmission corresponding to the second motor 4 is disengaged from the neutral gear and is engaged in the second gear, and the second motor 4 is gradually connected into the power system and outputs power together with the first motor 1. Under the condition that the vehicle is in the two-wheel drive normal mode, the acceleration intention information is strong, the four-drive system is controlled to enter the four-wheel drive mode, namely, the transmission corresponding to the second motor 4 is separated from the neutral gear, the first gear is quickly engaged, the second motor 4 is gradually connected to the power system, and the second motor 4 and the first motor 1 output power together.
An embodiment of the present application further provides a control apparatus of a vehicle powertrain, and fig. 4 is a block diagram of a control apparatus of a vehicle powertrain, as shown in fig. 4, the apparatus including: a first obtaining module 51, a control module 52, a second obtaining module 53 and a generating module 54. The first obtaining module 51 is configured to obtain historical starting information of the vehicle, where the historical starting information includes: the system comprises a starting mode information used for representing the starting mode generated when the vehicle performs the last manual selection, a first time information used for representing that the two-wheel drive strong power mode is manually selected within a first preset time period, and a second time information used for representing that the two-wheel drive normal mode is manually selected within the first preset time period. The control module 52 is configured to control the vehicle to enter an initial mode in response to the historical activation information satisfying a preset condition, wherein the initial mode includes at least one of: a two-drive high power mode and a two-drive normal mode. The second obtaining module 53 is configured to obtain acceleration intention information of the driver when the vehicle is in the initial mode, where the acceleration intention information includes at least one of: weak, medium and strong acceleration intents. The generation module 54 is configured to generate a set of control instructions for controlling a powertrain of the vehicle to execute a mode switching strategy based on the acceleration intent information and an initial mode in which the vehicle is located, wherein the mode switching strategy includes at least one of: maintaining the current driving mode, switching to the four-wheel drive mode, switching to the two-wheel drive strong power mode, switching to the two-wheel drive normal mode and switching to the two-wheel drive economic mode.
Embodiments of the present application also provide a storage medium having a computer program stored therein, wherein the computer program is configured to perform the steps in the above-mentioned method embodiments when running.
In the present embodiment, the above-mentioned storage medium may be configured to store a computer program for executing the steps of: step S1: historical start-up information of the vehicle is acquired, wherein the historical start-up information comprises start-up mode information used for indicating that the vehicle generates when the last manual selection is executed, first-time information used for indicating that the two-drive strong power mode is manually selected within a first preset time period, and second-time information used for indicating that the two-drive normal mode is manually selected within the first preset time period. Step S2: in response to the historical start information meeting a preset condition, controlling the vehicle to enter an initial mode, wherein the initial mode comprises at least one of the following modes: a two-drive high power mode and a two-drive normal mode. And step S3: acquiring acceleration intention information of a driver under the condition that the vehicle is in an initial mode, wherein the acceleration intention information comprises at least one of the following: weak acceleration intention, moderate acceleration intention, and strong acceleration intention. And step S4: generating a control instruction set based on the acceleration intention information and the initial mode of the vehicle, wherein the control instruction set is used for controlling a power system of the vehicle to execute a mode switching strategy, and the mode switching strategy comprises at least one of the following steps: maintaining the current driving mode, switching to the four-wheel drive mode, switching to the two-wheel drive strong power mode, switching to the two-wheel drive normal mode and switching to the two-wheel drive economic mode. The first preset duration is set according to the frequency of the vehicle use.
Embodiments of the present application also provide a processor configured to run a computer program to perform the steps in the above-described method embodiments.
In this embodiment, the processor may be configured to execute the following steps by a computer program: step S1: historical start-up information of the vehicle is acquired, wherein the historical start-up information comprises start-up mode information used for indicating that the vehicle generates when the last manual selection is executed, first-time information used for indicating that the two-drive strong power mode is manually selected within a first preset time period, and second-time information used for indicating that the two-drive normal mode is manually selected within the first preset time period. Step S2: in response to the historical start information meeting a preset condition, controlling the vehicle to enter an initial mode, wherein the initial mode comprises at least one of the following modes: a two-drive high power mode and a two-drive normal mode. And step S3: acquiring acceleration intention information of a driver under the condition that a vehicle is in an initial mode, wherein the acceleration intention information comprises at least one of the following information: weak acceleration intention, moderate acceleration intention, and strong acceleration intention. And step S4: generating a control instruction set based on the acceleration intention information and the initial mode of the vehicle, wherein the control instruction set is used for controlling a power system of the vehicle to execute a mode switching strategy, and the mode switching strategy comprises at least one of the following steps: maintaining the current driving mode, switching to the four-wheel drive mode, switching to the two-wheel drive strong power mode, switching to the two-wheel drive normal mode and switching to the two-wheel drive economic mode. The first preset duration is set according to the frequency of the vehicle use.
Embodiments of the present application also provide a vehicle comprising a memory having a computer program stored therein and a processor configured to run the computer program to perform the steps in the above-described method embodiments.
In this embodiment, the processor may be configured to execute the following steps by a computer program: step S1: the method comprises the steps of obtaining historical starting information of a vehicle, wherein the historical starting information comprises starting mode information used for representing that the vehicle generates when the last manual selection is carried out, first time information used for representing that a two-wheel drive strong power mode is manually selected within a first preset time period, and second time information used for representing that a two-wheel drive normal mode is manually selected within the first preset time period. Step S2: controlling the vehicle to enter an initial mode in response to the historical starting information meeting a preset condition, wherein the initial mode comprises at least one of the following modes: a two-drive high power mode and a two-drive normal mode. And step S3: acquiring acceleration intention information of a driver under the condition that the vehicle is in an initial mode, wherein the acceleration intention information comprises at least one of the following: weak acceleration intention, moderate acceleration intention, and strong acceleration intention. And step S4: generating a control instruction set based on the acceleration intention information and the initial mode of the vehicle, wherein the control instruction set is used for controlling a power system of the vehicle to execute a mode switching strategy, and the mode switching strategy comprises at least one of the following steps: maintaining the current driving mode, switching to the four-wheel drive mode, switching to the two-wheel drive strong power mode, switching to the two-wheel drive normal mode and switching to the two-wheel drive economic mode. The first preset duration is set according to the frequency of the vehicle use.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk, and various media capable of storing program codes.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A control method of a vehicular power system, characterized by comprising:
the method comprises the steps of obtaining historical starting information of a vehicle, wherein the historical starting information comprises starting mode information which is used for representing the vehicle to generate when the vehicle carries out last manual selection, first time information which is used for representing that a two-drive strong power mode is manually selected within a first preset time period, and second time information which is used for representing that a two-drive normal mode is manually selected within the first preset time period;
in response to the historical starting information meeting a preset condition, controlling the vehicle to enter an initial mode, wherein the initial mode comprises at least one of the following modes: a two-drive high power mode and a two-drive normal mode;
acquiring acceleration intention information of a driver in a case where the vehicle is in the initial mode, wherein the acceleration intention information includes at least one of: weak, medium, and strong acceleration intents;
generating a set of control instructions for controlling a powertrain of the vehicle to execute a mode switching strategy based on the acceleration intent information and the initial mode in which the vehicle is located, wherein the mode switching strategy includes at least one of: maintaining the current driving mode, switching to the four-wheel drive mode, switching to the two-wheel drive strong power mode, switching to the two-wheel drive normal mode and switching to the two-wheel drive economic mode.
2. The method of claim 1, wherein controlling the vehicle into an initial mode in response to the historical launch information satisfying a preset condition comprises:
judging whether the starting mode information generated when the vehicle executes the last manual selection is the information of starting in the two-wheel-drive strong power mode or the information of starting in the two-wheel-drive normal mode;
and if so, controlling the vehicle to enter the two-wheel drive strong power mode or the two-wheel drive normal mode corresponding to the starting mode information.
3. The method of claim 1, wherein controlling the vehicle into an initial mode in response to the historical activation information satisfying a preset condition comprises:
judging whether the starting mode information generated when the vehicle executes the last manual selection is the information of starting in the two-wheel-drive strong power mode or the information of starting in the two-wheel-drive normal mode;
if not, judging whether the times value in the first times information is larger than or equal to the times value in the second times information;
and if so, controlling the vehicle to enter the two-wheel strong power mode.
4. The method according to claim 1, wherein acquiring acceleration intention information of a driver with the vehicle in the initial mode comprises:
collecting an opening degree value of an accelerator pedal and an opening degree change rate of the accelerator pedal;
comparing the opening degree value of the accelerator pedal with an opening degree threshold value to obtain a first comparison result;
comparing the opening change rate of the accelerator pedal with a change rate threshold value to obtain a second comparison result;
determining the acceleration intention information in combination with the first comparison result and the second comparison result.
5. The method of claim 1, wherein generating a set of control instructions based on the acceleration intent information and the initial mode in which the vehicle is located comprises:
judging whether the acceleration intention information is weak in acceleration intention or not under the condition that the vehicle is in a two-wheel drive strong power mode;
and if so, generating a first target instruction in the control instruction set, wherein the first target instruction is used for controlling a power system of the vehicle to execute a strategy for maintaining the current driving mode.
6. The method of claim 1, wherein generating a set of control instructions based on the acceleration intent information and the initial mode in which the vehicle is located further comprises:
judging whether the acceleration intention information is weak in acceleration intention or not under the condition that the vehicle is in a two-wheel drive strong power mode;
and if not, generating a second target instruction in the control instruction set, wherein the second target instruction is used for controlling a power system of the vehicle to execute a strategy of switching to a four-wheel drive mode.
7. The method of claim 1, wherein generating a set of control instructions based on the acceleration intent information and the initial mode in which the vehicle is located further comprises:
after the vehicle is switched from the two-wheel drive strong power mode to the four-wheel drive mode, judging whether the driving demand torque of a driver is larger than a first torque threshold value, wherein the first torque threshold value is the torque provided by a power system when the vehicle is in the four-wheel drive mode;
and if not, generating a third target instruction in the control instruction set, wherein the third target instruction is used for controlling a power system of the vehicle to execute a strategy of switching to a two-wheel drive strong power mode.
8. The method of claim 1, wherein generating a set of control instructions based on the acceleration intent information and the initial mode in which the vehicle is located further comprises:
under the condition that the vehicle is in a two-wheel drive strong power mode, judging whether the vehicle is in a high-speed or express way area;
if so, judging whether the average speed of the vehicle in a second preset time length is greater than a preset speed or not;
and if so, generating a fourth target instruction in the control instruction set, wherein the fourth target instruction is used for controlling a power system of the vehicle to execute a strategy for switching to the two-wheel-drive economic mode.
9. A control apparatus of a vehicular power system, characterized by comprising:
the vehicle starting control system comprises a first obtaining module and a second obtaining module, wherein the first obtaining module is used for obtaining historical starting information of a vehicle, and the historical starting information comprises: the starting mode information is used for representing the starting mode information generated when the vehicle performs the last manual selection, the first-time information is used for representing that the two-wheel drive strong power mode is manually selected within a first preset time period, and the second-time information is used for representing that the two-wheel drive normal mode is manually selected within the first preset time period;
the control module is used for responding to the historical starting information and meeting preset conditions, and controlling the vehicle to enter an initial mode, wherein the initial mode comprises at least one of the following modes: a two-drive high power mode and a two-drive normal mode;
a second obtaining module configured to obtain acceleration intention information of a driver when the vehicle is in the initial mode, wherein the acceleration intention information includes at least one of: weak, medium, and strong acceleration intents;
a generation module to generate a set of control instructions to control a powertrain of the vehicle to execute a mode switching strategy based on the acceleration intent information and the initial mode in which the vehicle is located, wherein the mode switching strategy includes at least one of: maintaining the current driving mode, switching to the four-wheel drive mode, switching to the two-wheel drive strong power mode, switching to the two-wheel drive normal mode and switching to the two-wheel drive economic mode.
10. A vehicle comprising a memory and a processor, characterized in that the memory has stored therein a computer program, the processor being arranged to execute the computer program to perform the method of any of claims 1-8.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210896313.4A CN115476698A (en) | 2022-07-27 | 2022-07-27 | Control method and device of vehicle power system and vehicle |
| PCT/CN2023/089888 WO2024021702A1 (en) | 2022-07-27 | 2023-04-21 | Vehicle power system control method and device, and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210896313.4A CN115476698A (en) | 2022-07-27 | 2022-07-27 | Control method and device of vehicle power system and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115476698A true CN115476698A (en) | 2022-12-16 |
Family
ID=84422914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210896313.4A Pending CN115476698A (en) | 2022-07-27 | 2022-07-27 | Control method and device of vehicle power system and vehicle |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN115476698A (en) |
| WO (1) | WO2024021702A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024021702A1 (en) * | 2022-07-27 | 2024-02-01 | 中国第一汽车股份有限公司 | Vehicle power system control method and device, and vehicle |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4449971B2 (en) * | 2006-11-07 | 2010-04-14 | トヨタ自動車株式会社 | Vehicle control device and vehicle including the same |
| US20210146943A1 (en) * | 2017-06-02 | 2021-05-20 | Honda Motor Co., Ltd. | Vehicle control system, vehicle control method, and vehicle control program |
| JP2021012035A (en) * | 2019-07-03 | 2021-02-04 | 三菱自動車工業株式会社 | In-vehicle information display device and vehicle |
| CN114194194A (en) * | 2020-09-18 | 2022-03-18 | 罗伯特·博世有限公司 | Method and device for automatically switching vehicle driving modes |
| CN113071332B (en) * | 2021-04-28 | 2023-03-28 | 中国第一汽车股份有限公司 | Torque control method for dual-motor electric vehicle, electric vehicle and storage medium |
| CN113895244A (en) * | 2021-09-30 | 2022-01-07 | 岚图汽车科技有限公司 | Vehicle control method, device, electronic device and storage medium |
| CN114212091B (en) * | 2021-12-30 | 2023-05-23 | 重庆长安新能源汽车科技有限公司 | Control method for power transmission device of electric automobile, vehicle and computer readable storage medium |
| CN115476698A (en) * | 2022-07-27 | 2022-12-16 | 中国第一汽车股份有限公司 | Control method and device of vehicle power system and vehicle |
-
2022
- 2022-07-27 CN CN202210896313.4A patent/CN115476698A/en active Pending
-
2023
- 2023-04-21 WO PCT/CN2023/089888 patent/WO2024021702A1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024021702A1 (en) * | 2022-07-27 | 2024-02-01 | 中国第一汽车股份有限公司 | Vehicle power system control method and device, and vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024021702A1 (en) | 2024-02-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110126628B (en) | Control method and control device for electric vehicle motor | |
| CN105128860B (en) | The intelligent control method and system of a kind of vehicle driving model | |
| CN115476698A (en) | Control method and device of vehicle power system and vehicle | |
| CN112622866B (en) | Engine rotating speed adjusting method and device, vehicle electric control device and medium | |
| WO2024017071A1 (en) | Launch control method and apparatus for hybrid vehicle, and storage medium | |
| CN110469664B (en) | Method and system for controlling speed ratio of continuously variable transmission | |
| CN111497678B (en) | Power generation control method and device for fuel cell engine, processor and vehicle | |
| CN115675119A (en) | Vehicle torque control method and device, storage medium and electronic device | |
| CN112477621A (en) | Electric vehicle torque control method and device and computer readable storage medium | |
| CN115257342A (en) | Dual-motor hybrid power system and vehicle with same | |
| CN116039610A (en) | Control method and control device for switching serial-parallel driving modes of hybrid electric vehicle | |
| CN115257458A (en) | Control method and control device of DCDC converter and vehicle | |
| CN114872685A (en) | Hybrid electric vehicle control method and device, hybrid electric vehicle and storage medium | |
| CN114802194A (en) | Control method for series-parallel mode of hybrid vehicle and electronic device | |
| CN104653760A (en) | Gear shifting control method and gear shifting control device for AMT (Automated Mechanical Transmission) and AMT | |
| CN115123191A (en) | Torque control method of hybrid vehicle, vehicle control unit and hybrid vehicle | |
| CN115492929A (en) | Transmission speed ratio control method, control device, storage medium and vehicle | |
| CN117922312A (en) | Control method of vehicle, storage medium, processor and vehicle | |
| CN115111358A (en) | Shift control method and device for hybrid vehicle, vehicle and storage medium | |
| CN115095652A (en) | EMS control method for optimizing DCT model low transmission oil temperature starting comfort | |
| CN114764288A (en) | Adjusting method and device | |
| CN114704624B (en) | Control method, control device and electronic device for coaxial downshift of double-clutch transmission | |
| CN113734145B (en) | Vehicle driving method and device and vehicle | |
| CN116142198A (en) | Whole vehicle operation mode switching method and device, vehicle and storage medium | |
| CN115750774A (en) | AMT gearbox, vehicle and method for controlling AMT gearbox |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |