CN115755679A - Method, system, device, equipment and storage medium for controlling vehicle driving state - Google Patents
Method, system, device, equipment and storage medium for controlling vehicle driving state Download PDFInfo
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- CN115755679A CN115755679A CN202211361931.5A CN202211361931A CN115755679A CN 115755679 A CN115755679 A CN 115755679A CN 202211361931 A CN202211361931 A CN 202211361931A CN 115755679 A CN115755679 A CN 115755679A
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- Y02T10/72—Electric energy management in electromobility
Abstract
The application provides a method, a system, a device, an electronic device and a computer readable storage medium for controlling a vehicle driving state, wherein the method comprises the following steps: acquiring first electric quantity of a first battery pack sent by a first battery controller; acquiring a second electric quantity of a second battery pack sent by a second battery controller; comparing the first electric quantity with a first threshold value to generate a first comparison result; comparing the second electric quantity with a second threshold value to generate a second comparison result; and sending a first preset instruction to the first motor controller and a second preset instruction to the second motor controller based on the first comparison result and the second comparison result, so that the first motor controller controls the first motor and the second motor controller controls the second motor to enter a preset mode based on the first preset instruction and the second preset instruction. The technical problem that in the prior art, the time of discharging and energy recovery of double motors needs to be accurately controlled, so that the control mode of the vehicle driving state is difficult is solved.
Description
Technical Field
The present invention relates to the field of vehicle control, and in particular, to a method, a system, a device, an electronic apparatus, and a computer-readable storage medium for controlling a driving status of a vehicle.
Background
The driving mode of the electric vehicle refers to the arrangement of the vehicle motor and the number and position of the driving wheels. A typical passenger vehicle has two front and rear rows of wheels, wherein the wheels that are directly driven by the motor to push (or pull) the vehicle forward are the drive wheels. The most basic classification criteria are two-wheel drive and four-wheel drive, depending on the number of drive wheels.
In order to realize the driving mode of the electric vehicle, in the prior art, a four-wheel drive electric vehicle power system and a control method are provided, wherein the power system adopts a configuration mode of double motors and double controllers, and the power system adopts a single battery pack to supply power to the power system so as to realize the driving mode of the electric vehicle. However, the power system is powered by a single battery pack, the time for discharging and energy recovery of the double motors needs to be accurately controlled, otherwise, the voltage difference between the discharging and energy recovery of the motors is easily inconsistent, and the motors are damaged, so that the vehicle is dangerous.
However, in the prior art, when a single battery is used for supplying power to a power system, the time for discharging and energy recovery of double motors needs to be accurately controlled, so that the control mode of the driving state of the vehicle is difficult.
The present invention has been made in view of the above circumstances.
Disclosure of Invention
The application aims to provide a method, a system, a device, electronic equipment and a computer readable storage medium for controlling a vehicle driving state, and solves the technical problem that in the prior art, a single battery is adopted to supply power to a power system, so that the time of discharging and energy recovery of double motors needs to be accurately controlled, and the mode of controlling the vehicle driving state is difficult.
According to a first aspect of the present application, there is provided a method of controlling a driving state of a vehicle, the method comprising:
acquiring first electric quantity of a first battery pack sent by a first battery controller; acquiring second electric quantity of a second battery pack sent by a second battery controller; comparing the first electric quantity with a first threshold value to generate a first comparison result; comparing the second electric quantity with a second threshold value to generate a second comparison result; based on the first comparison result and the second comparison result, sending a first preset instruction to the first motor controller and sending a second preset instruction to the second motor controller, so that the first motor controller controls the first motor based on the first preset instruction and the second motor controller controls the second motor to enter a preset mode based on the second preset instruction; wherein, the first preset instruction comprises: the first request starting instruction and the first request stopping instruction, the second preset instruction comprises: a second request starting instruction and a second request stopping instruction; the preset mode includes: a sport mode and a stop sport mode.
Optionally, based on the first comparison result and the second comparison result, sending a first preset instruction to the first motor controller and sending a second preset instruction to the second motor controller, so that the first motor controller controls the first motor and the second motor controller controls the second motor to enter the preset mode based on the first preset instruction, including:
and under the condition that the first comparison result is that the first electric quantity is greater than a first threshold value and the second comparison result is that the second electric quantity is greater than a second threshold value, sending a first starting request instruction to the first motor controller and sending a second starting request instruction to the second motor controller, so that the first motor controller controls the first motor and the second motor controller controls the second motor to enter a motion mode based on the first starting request instruction and the second starting request instruction.
Optionally, based on the first comparison result and the second comparison result, sending a first preset instruction to the first motor controller and sending a second preset instruction to the second motor controller, so that the first motor controller controls the first motor and the second motor controller based on the first preset instruction and controls the second motor to enter the preset mode based on the second preset instruction, including:
and under the condition that the first comparison result is that the first electric quantity is smaller than a first threshold value and the second comparison result is that the second electric quantity is larger than a second threshold value, sending a first request stop instruction to the first motor controller and sending a second request start instruction to the second motor controller so that the second motor controller controls the second motor to enter a motion mode based on the second request start instruction and the first motor controller controls the first motor to enter a motion stop mode based on the first request instruction.
Optionally, based on the first comparison result and the second comparison result, sending a first preset instruction to the first motor controller and sending a second preset instruction to the second motor controller, so that the first motor controller controls the first motor and the second motor controller based on the first preset instruction and controls the second motor to enter the preset mode based on the second preset instruction, including:
and under the condition that the first comparison result is that the first electric quantity is greater than a first threshold value and the second comparison result is that the second electric quantity is smaller than a second threshold value, sending a first starting request instruction to the first motor controller and sending a second stopping request instruction to the second motor controller, so that the first motor controller controls the first motor to enter a motion mode based on the first starting request instruction and the second motor controller controls the second motor to enter a stopping motion mode based on the second starting request instruction.
Optionally, based on the first comparison result and the second comparison result, sending a first preset instruction to the first motor controller and sending a second preset instruction to the second motor controller, so that the first motor controller controls the first motor and the second motor controller based on the first preset instruction and controls the second motor to enter the preset mode based on the second preset instruction, including:
and under the condition that the first comparison result is that the first electric quantity is smaller than a first threshold value and the second comparison result is that the second electric quantity is smaller than a second threshold value, sending a first request stop instruction to the first motor controller and sending a second request stop instruction to the second motor controller, so that the first motor controller controls the first motor to stop the movement mode based on the first request start instruction and the second motor controller controls the second motor to enter the stop movement mode based on the second request instruction.
Optionally, the voltage platforms of the first motor and the second motor are the same or different.
According to a second aspect of the present application, there is provided a control system of a driving state of a vehicle, the system comprising:
the vehicle control unit is used for acquiring first electric quantity of the first battery pack sent by the first battery controller, comparing the first electric quantity with a first threshold value and generating a first comparison result; the first battery controller is respectively connected with the first battery pack and the whole vehicle controller;
the vehicle control unit is further used for acquiring a second electric quantity of a second battery pack sent by the second battery controller, comparing the second electric quantity with a second threshold value and generating a second comparison result; the second battery controller is respectively connected with the second battery pack and the whole vehicle controller;
the vehicle control unit is further used for sending a first preset instruction to the first motor controller and sending a second preset instruction to the second motor controller based on the first comparison result and the second comparison result; wherein, the first preset instruction comprises: the first request starting instruction and the first request stopping instruction, the second preset instruction comprises: a second request starting instruction and a second request stopping instruction;
the first motor controller is respectively connected with the vehicle control unit and the first motor and is used for controlling the first motor to enter a preset mode based on a first preset instruction;
the second motor controller is respectively connected with the vehicle controller and the second motor and used for controlling the second motor to enter a preset mode based on a second preset instruction; wherein, the preset mode includes: a sport mode and a stop sport mode.
According to a third aspect of the present application, there is provided a control device of a driving state of a vehicle, the device including: the first acquisition module is used for acquiring first electric quantity of a first battery pack sent by the first battery controller; the second acquisition module is used for acquiring second electric quantity of a second battery pack sent by the second battery controller; the first comparison module is used for comparing the first electric quantity with a first threshold value to generate a first comparison result; the second comparison module is used for comparing the second electric quantity with a second threshold value to generate a second comparison result; the control module is used for sending a first preset instruction to the first motor controller and sending a second preset instruction to the second motor controller based on the first comparison result and the second comparison result so that the first motor controller controls the first motor and the second motor controller controls the second motor to enter a preset mode based on the first preset instruction and the second preset instruction; wherein, the first preset instruction comprises: the first request starting instruction and the first request stopping instruction, the second preset instruction comprises: a second request starting instruction and a second request stopping instruction; the preset mode includes: a sport mode and a stop sport mode.
Optionally, the control module is configured to send a first start request instruction to the first motor controller and send a second start request instruction to the second motor controller when the first comparison result is that the first electric quantity is greater than the first threshold and the second comparison result is that the second electric quantity is greater than the second threshold, so that the first motor controller controls the first motor and the second motor controller controls the second motor to enter the motion mode based on the second start request instruction.
Optionally, the control module is configured to send a first request stop instruction to the first motor controller and a second request start instruction to the second motor controller when the first comparison result is that the first electric quantity is smaller than a first threshold and the second comparison result is that the second electric quantity is larger than a second threshold, so that the second motor controller controls the second motor to enter the motion mode based on the second request start instruction and the first motor controller controls the first motor to enter the motion stop mode based on the first request instruction.
Optionally, the control module is configured to send a first start request instruction to the first motor controller and send a second stop request instruction to the second motor controller when the first comparison result indicates that the first electric quantity is greater than the first threshold and the second comparison result indicates that the second electric quantity is less than the second threshold, so that the first motor controller controls the first motor to enter the motion mode based on the first start request instruction and the second motor controller controls the second motor to enter the stop motion mode based on the second stop request instruction.
Optionally, the control module is configured to send a first request stop instruction to the first motor controller and send a second request stop instruction to the second motor controller when the first comparison result is that the first electric quantity is smaller than the first threshold and the second comparison result is that the second electric quantity is smaller than the second threshold, so that the first motor controller controls the first motor to stop the movement mode based on the first request start instruction and the second motor controller controls the second motor to enter the movement stop mode based on the second request instruction.
Optionally, the voltage platforms of the first motor and the second motor are the same or different.
According to a fourth aspect of the present application, there is provided an electronic device comprising a processor, a memory, and a program or instructions stored on the memory and executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method of controlling a driving state of a vehicle as shown in the first aspect.
According to a fifth aspect of the present application, there is provided a readable storage medium storing thereon a program or instructions which, when executed by a processor, implement the steps of the control method of the driving state of the vehicle as shown in the first aspect.
The vehicle control unit can be used as an execution main body of the vehicle control unit, the vehicle control unit obtains a first electric quantity of a first battery pack sent by a first battery controller, obtains a second electric quantity of a second battery pack sent by a second battery controller, compares the first electric quantity with a first threshold value respectively, generates a first comparison result, compares the second electric quantity with a second threshold value, generates a second comparison result, and sends a first preset instruction to the first motor controller through the first comparison result and the second comparison result, wherein the first preset instruction comprises a first request starting instruction and a first request stopping instruction, namely, the first request starting instruction and the first request stopping instruction are used for enabling the first motor controller to control a first motor to enter a preset mode, wherein the preset mode comprises: a motion mode and a stop motion mode, that is, in a case where a first start request instruction is received, the first motor controller controls the first motor to enter the motion mode, and in a case where a first stop request instruction is received, the first motor controller controls the first motor to enter the stop motion mode; sending a second preset instruction to the second motor controller, wherein the second preset instruction comprises: and determining a preset mode of the second motor according to the second starting request instruction and the second stopping request instruction. This application adopts first battery to supply power to first motor, and the second battery supplies power to the second motor, and each motor all is equipped with special battery promptly, through different preset mode to realize the different travel state of vehicle. The technical problem that in the prior art, a single battery is adopted to supply power to a power system, the discharging time and the energy recovery time of double motors are required to be accurately controlled, and therefore the control mode of the driving state of a vehicle is difficult is solved.
Drawings
In order to more clearly illustrate the detailed description of the present application or the technical solutions in the prior art, the drawings needed to be used in the detailed description of the present application or the prior art description will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a flowchart of a method for controlling a driving state of a vehicle according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a control system for driving states of a vehicle according to an embodiment of the present application; and
fig. 3 is a schematic diagram of a control device for a driving state of a vehicle according to an embodiment of the present application.
Detailed Description
In order to make the above and other features and advantages of the present application more apparent, the present application is further described below with reference to the accompanying drawings. It is understood that the specific embodiments described herein are for purposes of illustration only and are not intended to be limiting.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one of ordinary skill in the art that the specific details need not be employed to practice the present application. In other instances, well-known steps or services have not been described in detail so as not to obscure the present application.
Based on the content of the background art, in the prior art, when a single battery is used for supplying power to a power system, the time for discharging and energy recovery of double motors needs to be accurately controlled, so that the control mode of the driving state of the vehicle is difficult.
In order to solve the technical problems, the application provides a method, a system, a device, an electronic device and a computer-readable storage medium for controlling a driving state of a vehicle. The following describes the control method of the driving state of the vehicle according to the present application in detail through specific embodiments and application scenarios thereof with reference to the accompanying drawings.
As shown in fig. 1, the present application provides a method of controlling a driving state of a vehicle, which may include:
step S11: the first electric quantity of the first battery pack sent by the first battery controller is obtained.
Specifically, in the present application, a vehicle control unit may be used as an execution subject of the present application. The vehicle control unit may establish a communication relationship with the first battery controller, and the first battery controller may establish a communication relationship with the first battery pack, it should be noted that the first battery controller may have an ability to acquire a current remaining power of the first battery pack, that is, the first battery controller may acquire a first power of the first battery pack, and then transmit the first power to the vehicle control unit, and the vehicle control unit receives the first power.
Step S13: and acquiring second electric quantity of the second battery pack sent by the second battery controller.
Specifically, in this application, the vehicle control unit may establish a communication relationship with the second battery controller, and the second battery controller may establish a communication relationship with the second battery, and it should be noted that the second battery controller may obtain a current remaining power capacity of the second battery pack, that is, the second battery controller may obtain a second electric quantity of the second battery pack, and then send the second electric quantity to the vehicle control unit, and the vehicle control unit receives the second electric quantity.
Step S15: and comparing the first electric quantity with a first threshold value to generate a first comparison result.
Specifically, in the application, after the vehicle control unit receives the first electric quantity, the vehicle control unit compares the first electric quantity with a first threshold value to generate a first comparison result. It should be noted that the first threshold may be a preset first threshold, and the first comparison result indicates that the first electric quantity is smaller than the first threshold and the first electric quantity is greater than the first threshold. Such as: the first threshold may be 10% of the remaining power of the first battery pack, and when the first power is 80%, the first power is greater than the first threshold; the first electric quantity is smaller than a first threshold value when the first electric quantity is 5%. It should be noted that, during the running of the vehicle, the electric quantity of the first battery pack is gradually consumed, which may indicate that the first comparison result may be changed.
Step S17: and comparing the second electric quantity with a second threshold value to generate a second comparison result.
Specifically, in the application, after receiving the second electric quantity, the vehicle control unit compares the second electric quantity with a second threshold value to generate a second comparison result. It should be noted that the second threshold may be a preset second threshold, and the second comparison result indicates that the second electric quantity is smaller than the second threshold and the second electric quantity is greater than the second threshold. Such as: the second threshold may be 30% of the remaining electric quantity of the second battery pack, and the second electric quantity is greater than the second threshold when the second electric quantity is 80%; the second quantity of electricity is less than a second threshold value when the second quantity of electricity is 20%. It should be noted that, during the running process of the vehicle, the electric quantity of the second battery pack is gradually consumed, which may indicate that the second comparison result may be changed.
Step S19: based on the first comparison result and the second comparison result, sending a first preset instruction to the first motor controller and sending a second preset instruction to the second motor controller, so that the first motor controller controls the first motor based on the first preset instruction and the second motor controller controls the second motor to enter a preset mode based on the second preset instruction; wherein, the first preset instruction comprises: the first request starting instruction and the first request stopping instruction, the second preset instruction comprises: a second request starting instruction and a second request stopping instruction; the preset mode comprises the following steps: a sport mode and a stop sport mode.
Specifically, in the present application, the vehicle control unit may establish a communication relationship with the first motor controller and the second motor controller, respectively, the first motor controller may establish a communication relationship with the first motor, and the second motor controller may establish a communication relationship with the second motor. The vehicle control unit sends a first preset instruction to the first motor controller and sends a second preset instruction to the second motor controller respectively under the condition that the first comparison result and the second comparison result are generated. Wherein, the first preset instruction comprises: the first request starting instruction and the first request stopping instruction, the second preset instruction comprises: the second preset instruction comprises: the vehicle control unit sends a first request starting instruction or a first request stopping instruction to the first motor controller respectively according to the first comparison result and the second comparison result, sends a second request starting instruction or a second request stopping instruction to the second motor controller, receives the first request starting instruction or the first request stopping instruction by the first motor controller, receives the first request starting instruction or the first request stopping instruction by the second motor controller, controls the first motor to enter a preset mode according to different instructions by the first motor controller, and controls the second motor to enter the preset mode according to different instructions by the second motor controller, wherein the preset mode comprises a motion mode and a stop motion mode, that is, the driving state of the vehicle can be determined according to the electric quantity of the first battery pack and the electric quantity of the second battery pack.
In addition, this application first battery package gives first motor power supply, and the second battery package can realize high-pressure isolation for the second motor power supply to when making vehicle control, it is controllable more safely.
The first request stop command may be a command to send a request torque to the first motor of 0, that is, a vehicle front drive wheel does not need torque, the second request stop command may be a command to send a request torque to the second motor of 0, that is, a vehicle rear drive wheel does not need torque, the first request start command may be a command to send a request torque to the first motor, that is, a vehicle front drive wheel needs torque to rotate, and the second request start command may be a command to send a request torque to the second motor, that is, a vehicle rear drive wheel needs torque to rotate.
In an alternative embodiment, the voltage platforms of the first and second motors are the same or different.
Specifically, in this application, the rated voltage and the rated power of the first battery pack and the second battery pack may be different, and the first motor is adapted to the first battery pack, and the second motor is adapted to the second battery pack, so that the voltage platforms of the first motor and the second motor may be different. At present, the adaptive new energy automobile, the battery pack at the front of the automobile generally adopts a high-power battery pack, the battery pack at the rear of the automobile generally adopts a low-power battery pack, and the normal motion state of the automobile can be met. Generally, the cost of the motor with a large voltage platform is high, and therefore, the cost can be reduced by adopting a mode of a second motor with a small voltage platform and a first motor with a large voltage platform.
In addition, the rated voltage and the rated power of the first battery pack and the second battery pack can be the same, so that the first motor is matched with the first battery pack, and the second motor is matched with the second battery pack, so that the voltage platforms of the first motor and the second motor can be the same.
In an alternative embodiment, step S19 comprises: and under the condition that the first electric quantity is larger than a first threshold value according to the first comparison result and the second electric quantity is larger than a second threshold value according to the second comparison result, sending a first starting request instruction to the first motor controller and sending a second starting request instruction to the second motor controller so that the first motor controller controls the first motor and the second motor controller controls the second motor to enter a motion mode according to the first starting request instruction and the second starting request instruction.
Specifically, in this application, the vehicle controller may send a first start request instruction to the first motor controller and send a second start request instruction to the second motor controller when the first comparison result is that the first electric quantity is greater than the first threshold and the second comparison result is that the second electric quantity is greater than the second threshold, the first motor controller controls the first motor to enter a motion mode according to the first start request instruction, so as to control the front driving wheels electrically connected to the first motor to move, and the second motor controller controls the second motor to enter the motion mode according to the second start request instruction, so as to control the rear driving wheels electrically connected to the second motor to move. Such as: the first electrical quantity may be 80%, the second electrical quantity may be 70%, the first threshold value may be 10%, the second threshold value may be 30%, the first electrical quantity is greater than the first threshold value, and the second electrical quantity is greater than the second threshold value, the vehicle may satisfy a condition that the front drive wheels and the rear drive wheels move simultaneously, and thus the first motor drives the front drive wheels to move and the second motor drives the rear drive wheels to move.
In an alternative embodiment, step S19 comprises: and under the condition that the first comparison result is that the first electric quantity is smaller than a first threshold value and the second comparison result is that the second electric quantity is larger than a second threshold value, sending a first request stop instruction to the first motor controller and sending a second request start instruction to the second motor controller so that the second motor controller controls the second motor to enter a motion mode based on the second request start instruction and the first motor controller controls the first motor to enter a motion stop mode based on the first request instruction.
Specifically, in this application, the vehicle control unit may send a first request stop instruction to the first motor controller and send a second request start instruction to the second motor controller when the first comparison result is that the first electric quantity is smaller than the first threshold and the second comparison result is that the second electric quantity is greater than the second threshold, where the first motor controller controls the first motor to enter a stop motion mode according to the first request stop instruction, and the second motor controller controls the second motor to enter a motion mode according to the second request start instruction, so as to control a rear driving wheel electrically connected to the second motor to move, and at this time, the vehicle is in a rear wheel drive mode.
It should be noted that, in this document, when the vehicle is in a normal driving process, the electric quantities of the first battery pack and the second battery pack are always consumed, and when the electric quantity of the first battery pack is consumed below a first threshold value, that is, the first electric quantity is smaller than the first threshold value, the torque required by the front driving wheels of the vehicle is 0, and the torque of the front driving wheels of the vehicle is gradually reduced to 0, rather than being directly 0; the second motor consumes the same torque as the first motor.
In an alternative embodiment, step S19 comprises: and under the condition that the first electric quantity is larger than a first threshold value and the second electric quantity is smaller than a second threshold value according to the first comparison result, sending a first starting request instruction to the first motor controller and sending a second stopping request instruction to the second motor controller so that the first motor controller controls the first motor to enter a motion mode based on the first starting request instruction and the second motor controller controls the second motor to enter a stopping motion mode based on the second stopping request instruction.
Specifically, in the application, when the vehicle control unit determines that the first electric quantity is greater than the first threshold as the first comparison result, and the second electric quantity is less than the second threshold as the second comparison result, the vehicle control unit may send a first request start instruction to the first motor controller, and send a second request stop instruction to the second motor controller, where the first motor controller controls the first motor to enter the motion mode according to the first request start instruction, so as to control the front drive wheel electrically connected to the first motor to move, and the second motor controller controls the second motor to enter the stop motion mode according to the second request stop instruction, where the vehicle is in the front wheel drive mode.
It should be noted that, when the torque of the second motor is gradually reduced to 0, the rear driving wheel electrically connected to the second motor does not move, and only the front driving wheel needs to move, so as to drive the rear driving wheel to rotate, that is, the rear driving wheel is in a dragged state.
In an alternative embodiment, step S19 comprises: and under the condition that the first comparison result is that the first electric quantity is smaller than a first threshold value and the second comparison result is that the second electric quantity is smaller than a second threshold value, sending a first request stop instruction to the first motor controller and sending a second request stop instruction to the second motor controller, so that the first motor controller controls the first motor to stop the movement mode based on the first request start instruction and the second motor controller controls the second motor to enter the stop movement mode based on the second request instruction.
Specifically, in this application, when the vehicle control unit determines that the first comparison result is that the first electric quantity is smaller than the first threshold value, and the second comparison result is that the second electric quantity is smaller than the second threshold value, the vehicle control unit may send a first request stop instruction to the first motor controller, and send a second request stop instruction to the second motor controller, where the first motor controller controls the first motor to enter the stop motion mode according to the first request stop instruction, and the second motor controller controls the second motor to enter the stop motion mode according to the second request stop instruction, and in a normal running process of the vehicle, when the first battery pack and the second battery pack do not satisfy a condition of supplying power to the first motor and the second motor, torques of the first motor and the second motor are both gradually reduced to 0, and then the vehicle is in a stop state, and cannot continue to run.
In an optional embodiment, when the vehicle is in the stop state and cannot continue to run, the first battery pack and/or the second battery pack may be supplied with power through a high-voltage battery in the new energy vehicle or a vehicle-mounted charger, so that the first battery pack and/or the second battery pack meet the running requirement, that is, the electric quantity of the first battery pack is greater than the first threshold and/or the electric quantity of the second battery pack is greater than the second threshold.
Compared with the prior art, the vehicle control system has the advantages that the first battery pack is adopted to supply power to the first motor, the second battery pack is adopted to supply power to the second motor, so that one battery pack corresponds to one motor, high-voltage isolation between the battery pack and the motor can be realized, the vehicle is controlled to carry out different driving modes (such as a front driving mode, a rear driving mode, a four-wheel driving mode and the like) by setting parameters of the whole vehicle, namely different comparison results judged by the whole vehicle controller, different operation requirements of a user can be met, discharging and energy recovery time of one battery corresponding to one motor only needs to be determined, and simplicity and accuracy of control are guaranteed. The technical problem that in the prior art, a single battery is adopted to supply power to a power system, the discharging time and the energy recovery time of double motors are required to be accurately controlled, and therefore the control mode of the driving state of a vehicle is difficult is solved.
In an alternative embodiment, shown in fig. 2, the present application provides a vehicle driving state control system, which may include: the vehicle control unit is used for acquiring first electric quantity of the first battery pack sent by the first battery controller, comparing the first electric quantity with a first threshold value and generating a first comparison result; the first battery controller is respectively connected with the first battery pack and the whole vehicle controller; the vehicle control unit is further used for acquiring a second electric quantity of a second battery pack sent by the second battery controller, comparing the second electric quantity with a second threshold value and generating a second comparison result; the second battery controller is respectively connected with the second battery pack and the whole vehicle controller; the vehicle control unit is further used for sending a first preset instruction to the first motor controller and sending a second preset instruction to the second motor controller based on the first comparison result and the second comparison result; wherein, the first preset instruction comprises: the first request starting instruction and the first request stopping instruction, the second preset instruction comprises: a second request starting instruction and a second request stopping instruction; the first motor controller is respectively connected with the vehicle control unit and the first motor and is used for controlling the first motor to enter a preset mode based on a first preset instruction; the second motor controller is respectively connected with the vehicle controller and the second motor and used for controlling the second motor to enter a preset mode based on a second preset instruction; wherein, the preset mode includes: a sport mode and a stop sport mode.
Specifically, in the present application, as shown in fig. 2, the vehicle control unit is respectively connected to the first motor controller, the second motor controller, the first battery controller and the second battery controller through the CAN signal, the first motor controller is connected to the first motor through the hard wire, the second motor controller is connected to the second motor through the hard wire, the first battery pack is connected to the first battery controller through the hard wire, and the second battery controller is connected to the second battery pack through the hard wire. The first battery pack can supply power to the first motor; the second battery pack can supply power to the second motor; the first motor can drive the front wheel to rotate, the second motor can drive the rear wheel to rotate, and the vehicle control unit controls the first motor and the second motor to move by acquiring the electric quantity of the first battery pack and the electric quantity of the second battery pack from the first battery pack and the second battery pack. Wherein, whole car drive mode can include at least: front drive mode, rear drive mode and four-wheel drive mode, four-wheel drive mode: when the first electric quantity is higher than a first threshold value and the second electric quantity is higher than a second threshold value, the vehicle control unit sends torque requirements to the first motor controller and the second motor controller, and the first motor and the second motor work simultaneously; a rear driving mode: when the first electric quantity is lower than a first threshold value and the second electric quantity is higher than a second threshold value, the vehicle control unit sends a request torque to the first motor controller to be zero and sends a torque request to the second motor controller, and the first motor does not work and the second motor works; front drive mode: when the first electric quantity is higher than the first threshold value and the second electric quantity is lower than the second threshold value, the vehicle control unit sends a torque demand to the first motor controller, sends a request torque to the second motor controller to be zero, and the first motor works and the second motor does not work.
It should be noted that, in the normal operation process of the vehicle, the battery power loss, that is, the first power loss and the second power loss are also performed, and the power losses of the first power and the second power may be the same, and when the first power after being lost is smaller than the first threshold and the second power after being lost is larger than the second threshold, the vehicle is in the rear driving state.
It should be noted that, when the vehicle is in a charging state (for example, when a charging gun is used for charging), the first battery pack and/or the second battery pack may be selectively charged. The driving mode of the vehicle can be determined according to different electric quantity states of the first battery pack and the second battery pack.
Compared with the prior art, the vehicle control system has the advantages that the first battery pack is adopted to supply power to the first motor, the second battery pack is adopted to supply power to the second motor, so that one battery pack corresponds to one motor, high-voltage isolation between the battery pack and the motor can be realized, the vehicle is controlled to carry out different driving modes (such as a front driving mode, a rear driving mode, a four-wheel driving mode and the like) by setting parameters of the whole vehicle, namely different comparison results judged by the whole vehicle controller, different operation requirements of a user can be met, discharging and energy recovery time of one battery corresponding to one motor only needs to be determined, and simplicity and accuracy of control are guaranteed. The technical problem that in the prior art, a single battery is adopted to supply power to a power system, the time of discharging and energy recovery of double motors needs to be accurately controlled, and therefore the mode of controlling the driving state of a vehicle is difficult is solved.
In an alternative embodiment, as shown in fig. 3, the present application provides a vehicle driving state control apparatus, which may include:
a first obtaining module 31, configured to obtain a first electric quantity of a first battery pack sent by a first battery controller; a second obtaining module 32, configured to obtain a second electric quantity of the second battery pack sent by the second battery controller; the first comparison module 33 is configured to compare the first electric quantity with a first threshold value, and generate a first comparison result; a second comparison module 34, configured to compare the second electric quantity with a second threshold value, and generate a second comparison result; the control module 35 is configured to send a first preset instruction to the first motor controller and a second preset instruction to the second motor controller based on the first comparison result and the second comparison result, so that the first motor controller controls the first motor and the second motor controller controls the second motor to enter a preset mode based on the first preset instruction and the second preset instruction; wherein, the first preset instruction comprises: the first request starting instruction and the first request stopping instruction, the second preset instruction comprises: a second request starting instruction and a second request stopping instruction; the preset mode comprises the following steps: a sport mode and a stop sport mode.
Specifically, a vehicle control unit may be used as an execution subject of the present application. The vehicle control unit may establish a communication relationship with the first battery controller, and the first battery controller may establish a communication relationship with the first battery pack, it should be noted that the first battery controller may have an ability to acquire a current remaining power of the first battery pack, that is, the first battery controller may acquire a first power of the first battery pack, and then transmit the first power to the vehicle control unit, and the vehicle control unit receives the first power. And acquiring second electric quantity of the second battery pack sent by the second battery controller. The vehicle control unit can establish communication relations with the first motor controller and the second motor controller respectively, the first motor controller can establish communication relations with the first motor, and the second motor controller can establish communication relations with the second motor. The vehicle control unit sends a first preset instruction to the first motor controller and sends a second preset instruction to the second motor controller respectively under the condition that the first comparison result and the second comparison result are generated. Wherein, the first preset instruction comprises: the first request starting instruction and the first request stopping instruction, the second preset instruction comprises: the second preset instruction comprises: the second starting request instruction and the second stopping request instruction are respectively sent to the first motor controller by the vehicle control unit according to the first comparison result and the second comparison result, the second starting request instruction or the second stopping request instruction is sent to the second motor controller, then the first motor controller receives the first starting request instruction or the first stopping request instruction, the second motor controller receives the first starting request instruction or the first stopping request instruction, the first motor controller controls the first motor to enter the preset mode according to different instructions, the second motor controller controls the second motor to enter the preset mode according to different instructions, and the preset mode comprises a motion mode and a stopping motion mode.
Optionally, the control module 35 is configured to send a first start request instruction to the first motor controller and send a second start request instruction to the second motor controller when the first comparison result indicates that the first electric quantity is greater than the first threshold and the second comparison result indicates that the second electric quantity is greater than the second threshold, so that the first motor controller controls the first motor based on the first start request instruction and the second motor controller controls the second motor to enter the motion mode based on the second start request instruction.
Specifically, the vehicle control unit determines that the first electric quantity is greater than a first threshold value in the first comparison result, and the first motor enters the motion mode and the second motor enters the motion mode in the second comparison result, where the second electric quantity is greater than a second threshold value, and at this time, the vehicle is in the four-wheel drive mode.
Optionally, the control module 35 is configured to send a first request stop instruction to the first motor controller and a second request start instruction to the second motor controller when the first comparison result indicates that the first electric quantity is smaller than the first threshold and the second comparison result indicates that the second electric quantity is larger than the second threshold, so that the second motor controller controls the second motor to enter the motion mode based on the second request start instruction and the first motor controller controls the first motor to enter the motion stop mode based on the first request instruction.
Specifically, the vehicle control unit determines that the first electric quantity is smaller than a first threshold value in the first comparison result, and the first motor enters a stop motion mode and the second motor enters a motion mode in the second comparison result, where the second electric quantity is larger than a second threshold value, and at this time, the vehicle is in a rear wheel drive mode.
Optionally, the control module 35 is configured to send a first request start instruction to the first motor controller and a second request stop instruction to the second motor controller when the first comparison result is that the first electric quantity is greater than the first threshold and the second comparison result is that the second electric quantity is smaller than the second threshold, so that the first motor controller controls the first motor to enter the motion mode based on the first request start instruction and the second motor controller controls the second motor to enter the motion stop mode based on the second request instruction.
Specifically, the vehicle control unit determines that the first electric quantity is larger than a first threshold value in the first comparison result, and the second electric quantity is smaller than a second threshold value in the second comparison result, the first motor enters a motion mode, the second motor enters a stop motion mode, and at this time, the vehicle is in a front wheel drive mode.
Optionally, the control module 35 is configured to send a first request stop instruction to the first motor controller and send a second request stop instruction to the second motor controller when the first comparison result is that the first electric quantity is smaller than the first threshold and the second comparison result is that the second electric quantity is smaller than the second threshold, so that the first motor controller controls the first motor to stop the motion mode based on the first request start instruction and the second motor controller controls the second motor to enter the stop motion mode based on the second request instruction.
Specifically, the vehicle control unit determines that the first electric quantity is smaller than a first threshold value in the first comparison result, and the second electric quantity is smaller than a second threshold value in the second comparison result, the first motor enters the stop motion mode, the second motor enters the stop motion mode, and at this time, the vehicle is in a state of gradually decelerating and finally stopping.
Optionally, the voltage platforms of the first motor and the second motor are the same or different.
Specifically, in the present application, the rated voltage and the rated power of the first battery pack and the second battery pack may be different, the first motor is adapted to the first battery pack, and the second motor is adapted to the second battery pack, so that the voltage platforms of the first motor and the second motor may be different. At present, the adaptive new energy automobile, the battery pack at the front of the automobile generally adopts a high-power battery pack, the battery pack at the rear of the automobile generally adopts a low-power battery pack, and the normal motion state of the automobile can be met. Generally, the cost of the motor with a large voltage platform is high, and therefore, the cost can be reduced by adopting a mode of a second motor with a small voltage platform and a first motor with a large voltage platform.
Compared with the prior art, the vehicle control system has the advantages that the first battery pack is adopted to supply power to the first motor, the second battery pack is adopted to supply power to the second motor, so that one battery pack corresponds to one motor, high-voltage isolation between the battery pack and the motor can be realized, the vehicle is controlled to carry out different driving modes (such as a front driving mode, a rear driving mode, a four-wheel driving mode and the like) by setting parameters of the whole vehicle, namely different comparison results judged by the whole vehicle controller, different operation requirements of a user can be met, discharging and energy recovery time of one battery corresponding to one motor only needs to be determined, and simplicity and accuracy of control are guaranteed. The technical problem that in the prior art, a single battery is adopted to supply power to a power system, the time of discharging and energy recovery of double motors needs to be accurately controlled, and therefore the mode of controlling the driving state of a vehicle is difficult is solved.
It should be understood that the various modules/units of the apparatus of the present application may be implemented in whole or in part by software, hardware, firmware, or a combination thereof. Each module/unit may be embedded in the processor of the computer device in the form of hardware or firmware or independent from the processor, or may be stored in the memory of the computer device in the form of software for being called by the processor to execute the service of each module/unit. Each module/unit may be implemented as a separate component or module, or two or more modules/units may be implemented as a single component or module.
In one embodiment, a computer device is provided that includes a memory and a processor, the memory having stored thereon computer instructions executable by the processor, the computer instructions, when executed by the processor, instructing the processor to perform the steps of the method of the present application. The computer device may broadly be a server, a terminal, or any other electronic device having the necessary computing and/or processing capabilities. In one embodiment, the computer device may include a processor, memory, a network interface, a communication interface, etc., connected by a system bus. The processor of the computer device may be used to provide the necessary computing, processing and/or control capabilities. The memory of the computer device may include a non-volatile storage medium and an internal memory. The non-volatile storage medium may have stored therein or thereon a service system, a computer program, and the like. The internal memory may provide an environment for the service system and the operation of the computer program in the nonvolatile storage medium. The network interface and the communication interface of the computer device may be used to connect and communicate with an external device through a network.
The present application may be realized as a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, causes the steps of the method of the present application to be performed. In one embodiment, the computer program is distributed across a plurality of computer devices or processors coupled by a network such that the computer program is stored, accessed, and executed by one or more computer devices or processors in a distributed fashion. A single method step/service, or two or more method steps/services, may be performed by a single computer device or processor or by two or more computer devices or processors. One or more method steps/services may be performed by one or more computer devices or processors, and one or more other method steps/services may be performed by one or more other computer devices or processors. One or more computer devices or processors may perform a single method step/service or two or more method steps/services.
One of ordinary skill in the art will appreciate that the steps of the methods of the present application may be directed to associated hardware such as a computer device or a processor by a computer program, and that the computer program may be stored in a non-transitory computer readable storage medium, which when executed causes the steps of the methods of the present application to be performed. Any reference herein to memory, storage, databases, or other media may include non-volatile and/or volatile memory, as appropriate. Examples of non-volatile memory include read-only memory (ROM), programmable ROM (PROM), electrically Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), flash memory, magnetic tape, floppy disk, magneto-optical data storage, hard disk, solid state disk, and the like. Examples of volatile memory include Random Access Memory (RAM), external cache memory, and the like.
The respective technical features described above may be arbitrarily combined. Although not all possible combinations of features are described, any combination of features should be considered to be covered by the present specification as long as there is no contradiction between such combinations.
While the present application has been described in connection with embodiments, it will be understood by those skilled in the art that the foregoing description and drawings are by way of example only, and not limitation, and the present application is not limited to the disclosed embodiments. Various modifications and variations are possible without departing from the spirit of the application.
Claims (10)
1. A method for controlling a driving state of a vehicle, characterized by comprising:
acquiring first electric quantity of a first battery pack sent by a first battery controller;
acquiring second electric quantity of a second battery pack sent by a second battery controller;
comparing the first electric quantity with a first threshold value to generate a first comparison result;
comparing the second electric quantity with a second threshold value to generate a second comparison result;
based on the first comparison result and the second comparison result, sending a first preset instruction to a first motor controller and sending a second preset instruction to a second motor controller, so that the first motor controller controls a first motor based on the first preset instruction and the second motor controller controls a second motor to enter a preset mode based on the second preset instruction; wherein the first preset instruction comprises: a first request starting instruction and a first request stopping instruction, wherein the second preset instruction comprises: a second request starting instruction and a second request stopping instruction; the preset mode includes: a sport mode and a stop sport mode.
2. The method for controlling a driving state of a vehicle according to claim 1, wherein the sending a first preset command to a first motor controller and a second preset command to a second motor controller based on the first comparison result and the second comparison result, so that the first motor controller controls a first motor based on the first preset command and the second motor controller controls a second motor to enter a preset mode based on the second preset command, comprises:
and under the condition that the first comparison result is that the first electric quantity is greater than a first threshold value and the second comparison result is that the second electric quantity is greater than a second threshold value, sending a first starting request instruction to a first motor controller and sending a second starting request instruction to a second motor controller so that the first motor controller controls a first motor based on the first starting request instruction and the second motor controller controls a second motor to enter a motion mode based on the second starting request instruction.
3. The method for controlling a driving state of a vehicle according to claim 1, wherein the sending a first preset command to a first motor controller and a second preset command to a second motor controller based on the first comparison result and the second comparison result, so that the first motor controller controls a first motor based on the first preset command and the second motor controller controls a second motor to enter a preset mode based on the second preset command, comprises:
and under the condition that the first comparison result is that the first electric quantity is smaller than a first threshold value and the second comparison result is that the second electric quantity is larger than a second threshold value, sending a first request stop instruction to a first motor controller and sending a second request start instruction to a second motor controller so as to enable the second motor controller to control a second motor to enter a motion mode based on the second request start instruction and enable the first motor controller to control the first motor to enter a motion stop mode based on the first request instruction.
4. The method for controlling a driving state of a vehicle according to claim 1, wherein the sending a first preset command to a first motor controller and a second preset command to a second motor controller based on the first comparison result and the second comparison result, so that the first motor controller controls a first motor based on the first preset command and the second motor controller controls a second motor to enter a preset mode based on the second preset command, comprises:
and under the condition that the first comparison result is that the first electric quantity is greater than a first threshold value and the second comparison result is that the second electric quantity is less than a second threshold value, sending a first starting request instruction to a first motor controller and sending a second stopping request instruction to a second motor controller so that the first motor controller controls the first motor to enter a motion mode based on the first starting request instruction and the second motor controller controls the second motor to enter a stopping motion mode based on the second starting request instruction.
5. The method according to claim 1, wherein the sending a first preset command to a first motor controller and a second preset command to a second motor controller based on the first comparison result and the second comparison result, so that the first motor controller controls a first motor based on the first preset command and the second motor controller controls a second motor to enter a preset mode based on the second preset command, comprises:
and under the condition that the first comparison result is that the first electric quantity is smaller than a first threshold value and the second comparison result is that the second electric quantity is smaller than a second threshold value, sending a first request stop instruction to a first motor controller and sending a second request stop instruction to a second motor controller so that the first motor controller controls a first motor to stop a motion mode based on the first request start instruction and the second motor controller controls the second motor to enter a stop motion mode based on the second request instruction.
6. The control method of the driving state of the vehicle according to any one of claims 1 to 5,
the voltage platforms of the first motor and the second motor are the same or different.
7. A control system of a driving state of a vehicle, characterized by comprising:
the vehicle control unit is used for acquiring first electric quantity of the first battery pack sent by the first battery controller, comparing the first electric quantity with a first threshold value and generating a first comparison result; the first battery controller is respectively connected with the first battery pack and the whole vehicle controller;
the vehicle control unit is further used for acquiring a second electric quantity of a second battery pack sent by the second battery controller, comparing the second electric quantity with a second threshold value and generating a second comparison result; the second battery controller is respectively connected with the second battery pack and the whole vehicle controller;
the vehicle control unit is further used for sending a first preset instruction to the first motor controller and sending a second preset instruction to the second motor controller based on the first comparison result and the second comparison result; wherein the first preset instruction comprises: a first request starting instruction and a first request stopping instruction, wherein the second preset instruction comprises: a second request starting instruction and a second request stopping instruction;
the first motor controller is respectively connected with the vehicle control unit and the first motor and is used for controlling the first motor to enter a preset mode based on the first preset instruction;
the second motor controller is respectively connected with the vehicle controller and the second motor and is used for controlling the second motor to enter a preset mode based on the second preset instruction; wherein the preset mode comprises: a sport mode and a stop sport mode.
8. A control apparatus of a driving state of a vehicle, characterized by comprising:
the first acquisition module is used for acquiring first electric quantity of a first battery pack sent by the first battery controller;
the second acquisition module is used for acquiring second electric quantity of a second battery pack sent by the second battery controller;
the first comparison module is used for comparing the first electric quantity with a first threshold value to generate a first comparison result;
the second comparison module is used for comparing the second electric quantity with a second threshold value to generate a second comparison result;
the control module is used for sending a first preset instruction to a first motor controller and sending a second preset instruction to a second motor controller based on the first comparison result and the second comparison result so that the first motor controller controls a first motor and the second motor controller controls a second motor to enter a preset mode based on the first preset instruction and the second preset instruction; wherein the first preset instruction comprises: a first request starting instruction and a first request stopping instruction, wherein the second preset instruction comprises: a second request starting instruction and a second request stopping instruction; the preset mode includes: a sport mode and a stop sport mode.
9. An electronic device, characterized in that the electronic device comprises: a processor and a memory storing computer program instructions;
the processor, when executing the computer program instructions, implements a method of controlling a driving state of a vehicle as claimed in any one of claims 1 to 6.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon computer program instructions which, when executed by a processor, implement the control method of the driving state of the vehicle according to any one of claims 1 to 6.
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|---|---|---|---|
| CN202211361931.5A CN115755679A (en) | 2022-11-02 | 2022-11-02 | Method, system, device, equipment and storage medium for controlling vehicle driving state |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211361931.5A CN115755679A (en) | 2022-11-02 | 2022-11-02 | Method, system, device, equipment and storage medium for controlling vehicle driving state |
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| CN115755679A true CN115755679A (en) | 2023-03-07 |
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| CN202211361931.5A Pending CN115755679A (en) | 2022-11-02 | 2022-11-02 | Method, system, device, equipment and storage medium for controlling vehicle driving state |
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| CN (1) | CN115755679A (en) |
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