CN112896142A

CN112896142A - Vehicle control method and device, storage medium and vehicle control unit

Info

Publication number: CN112896142A
Application number: CN202011607618.6A
Authority: CN
Inventors: 朱红霞; 黄诚刚; 蒋挺; 张超; 康丹; 张琳娜; 陈明明
Original assignee: Chongqing Branch of DFSK Motor Co Ltd
Current assignee: Chongqing Branch of DFSK Motor Co Ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-06-04

Abstract

The embodiment of the invention provides a vehicle control method, a vehicle control device, a storage medium and a vehicle control unit. If the acquired pure electric mode instruction is received, judging that the acquired first battery SOC value is larger than a first SOC threshold value and receiving an electromagnetic clutch turn-off signal, and starting the pure electric mode; if the acquired normal mode instruction is received, judging that the SOC value of the first battery is smaller than a first SOC threshold value and receiving an electromagnetic clutch disconnection signal, and starting a normal mode; if the obtained motion mode instruction is received, and an electromagnetic clutch disconnection signal is received, starting the motion mode; and if the acquired snow sand mode command is received, starting the snow sand mode. The technical scheme provided by the embodiment of the invention can drive the vehicle according to different modes, and reduce the energy loss of the vehicle, thereby reducing the oil consumption of the vehicle.

Description

Vehicle control method and device, storage medium and vehicle control unit

[ technical field ] A method for producing a semiconductor device

The invention relates to the technical field of vehicles, in particular to a vehicle control method, a vehicle control device, a storage medium and a vehicle control unit.

[ background of the invention ]

In the related art, the engine cannot directly drive the vehicle to run, the engine generates power firstly when the vehicle runs at a high speed, the driving motor drives according to the power generated by the engine, energy conversion exists between the engine and the driving motor, energy loss also exists, and the fuel consumption of the vehicle is high.

[ summary of the invention ]

In view of this, embodiments of the present invention provide a method and an apparatus for controlling a vehicle, a storage medium, and a vehicle controller, so as to reduce fuel consumption of the vehicle.

In one aspect, an embodiment of the present invention provides a control method for a vehicle, including:

if the acquired pure electric mode instruction is received, judging that the acquired first battery SOC value is larger than a first SOC threshold value and receiving an electromagnetic clutch disconnection signal, and starting the pure electric mode;

if the acquired normal mode instruction is received, judging that the SOC value of the first battery is smaller than the first SOC threshold value and receiving an electromagnetic clutch turn-off signal, and starting a normal mode;

if the obtained motion mode instruction is received, and the electromagnetic clutch disconnection signal is received, starting the motion mode;

and if the acquired snow sand mode command is received, starting the snow sand mode.

Optionally, the starting of the pure electric mode includes:

judging whether an accelerator signal sent by an accelerator pedal sensor is received;

if the accelerator signal sent by the accelerator pedal sensor is judged to be received, a driving instruction is sent to the rear-drive motor, so that the rear-drive motor can drive the vehicle to run in response to the driving instruction;

judging whether the acquired SOC value of the second battery is smaller than a first SOC threshold value;

and if the SOC value of the second battery is judged to be smaller than the first SOC threshold value, continuing executing the step of starting the normal mode.

Optionally, the starting the normal mode includes:

if the accelerator signal sent by the accelerator pedal sensor is judged to be received, whether the obtained third battery SOC value is larger than or smaller than the first SOC threshold value is judged;

if the SOC value of the third battery is judged to be larger than the first SOC threshold value, the step of starting the pure electric mode is continuously executed;

if the SOC value of the third battery is judged to be smaller than the first SOC threshold value, a starting instruction is sent to an engine, so that the engine can respond to the starting instruction to start power generation;

judging whether the acquired first vehicle speed value is greater than or less than a first vehicle speed threshold value;

if the first vehicle speed value is smaller than a first vehicle speed threshold value, starting a range extending mode;

judging whether the acquired second vehicle speed value is greater than or less than the first vehicle speed threshold value or not and whether the acquired fourth battery SOC is greater than or less than the second SOC threshold value or not;

if the second vehicle speed value is larger than the first vehicle speed threshold value and the SOC of the fourth battery is smaller than the second SOC threshold value, sending a closing instruction to an electromagnetic clutch so that the electromagnetic clutch can be closed in response to the closing instruction;

and sending a driving vehicle command to the engine, so that the engine drives the vehicle to run in response to the driving vehicle command.

Optionally, the sending a starting instruction to the engine for the engine-driven vehicle to run comprises:

collecting the torque demand of the whole vehicle and the output torque of an engine;

judging whether the torque demand of the whole vehicle is larger than or smaller than the output torque of the engine;

if the torque requirement of the whole vehicle is judged to be larger than the output torque of the engine, a driving instruction is sent to a rear drive motor, so that the rear drive motor can respond to the driving instruction for driving;

judging whether the acquired third vehicle speed value is greater than or less than a first vehicle speed threshold value;

and if the third vehicle speed value is smaller than the first vehicle speed threshold value, sending a disconnection instruction to the electromagnetic clutch so that the electromagnetic clutch is disconnected in response to the disconnection instruction, and continuing to execute the step of starting the normal mode.

Optionally, the initiating the motion mode comprises, after:

judging whether the acquired fifth battery SOC is greater than or less than a third SOC threshold value;

if the SOC of the fifth battery is judged to be larger than a third SOC threshold value, the rotating speed of an electromagnetic clutch and the rotating speed of wheels are acquired;

judging whether the difference value between the rotating speed of the electromagnetic clutch and the rotating speed of the wheel is smaller than a set threshold value or not;

if the difference value between the rotating speed of the electromagnetic clutch and the rotating speed of the wheel is smaller than a set threshold value, sending a closing instruction to the electromagnetic clutch so that the electromagnetic clutch can be closed in response to the closing instruction;

judging whether the acquired current vehicle speed reaches the engine starting rotating speed or not;

if the obtained current vehicle speed is judged to reach the engine starting rotating speed, a vehicle driving instruction is sent to the engine, so that the engine can respond to the vehicle driving instruction to drive the vehicle to run;

and if the SOC of the fifth battery is judged to be smaller than the third SOC threshold value, continuing executing the step of starting the normal mode.

Optionally, the initiating the snow sand mode comprises, after:

judging whether the acquired sixth battery SOC is greater than or less than a fourth SOC threshold value;

if the sixth battery SOC is judged to be larger than a fourth SOC threshold value, sending a closing instruction to an electromagnetic clutch so that the electromagnetic clutch can be closed in response to the closing instruction;

judging whether the acquired fourth vehicle speed value is greater than or less than a second vehicle speed threshold value;

if the fourth vehicle speed value is judged to be larger than the second vehicle speed threshold value, the step of starting the normal mode is continuously executed;

and if the sixth battery SOC is judged to be smaller than the fourth SOC threshold value, continuing executing the step of starting the normal mode.

Optionally, the method further comprises:

if the accelerator signal sent by the accelerator pedal sensor is not received, judging whether the acquired fifth vehicle speed value is greater than a third vehicle speed threshold value;

if the fifth vehicle speed value is larger than the third vehicle speed threshold value, judging whether the obtained seventh battery SOC is smaller than a fifth SOC threshold value;

and if the seventh battery SOC is judged to be smaller than a fifth SOC threshold value, sending a feeding instruction to a driving motor so that the driving motor can feed power in response to the feeding instruction.

Optionally, the method further comprises:

if the accelerator signal sent by the accelerator pedal sensor is not received, judging whether the acquired sixth vehicle speed value is greater than a third vehicle speed threshold value;

if the sixth vehicle speed value is larger than the third vehicle speed threshold value, judging whether the obtained eighth battery SOC is smaller than a fifth SOC threshold value;

if the eighth battery SOC is judged to be smaller than the fifth SOC threshold value, judging whether an electromagnetic clutch turn-off signal or an electromagnetic clutch turn-on signal is received;

if the electromagnetic clutch disconnection signal is judged to be received, a feed instruction is sent to the driving motor, so that the driving motor can feed in response to the feed instruction;

and if the electromagnetic clutch closing signal is judged to be received, sending a feeding instruction to the generator and the driving motor so that the generator and the driving motor can feed power in response to the feeding instruction.

Optionally, the method further comprises:

if the torque requirement of the whole vehicle is judged to be smaller than the output torque of the engine, a power generation instruction is sent to the generator, so that the generator can respond to the power generation instruction to generate power;

and judging whether the obtained ninth battery SOC is larger than a sixth SOC threshold value, if so, sending a power generation stopping instruction to the generator so that the generator can stop generating power in response to the power generation instruction, and continuing to execute the step of starting the pure electric mode.

In another aspect, an embodiment of the present invention provides a control apparatus for a vehicle, including:

the first starting module is used for judging that the SOC value of the first battery is larger than a first SOC threshold value and receiving an electromagnetic clutch disconnection signal to start the pure electric mode if the obtained pure electric mode instruction is received;

the second starting module is used for judging that the SOC value of the first battery is smaller than a first SOC threshold value and receiving an electromagnetic clutch disconnection signal if the obtained normal mode instruction is received, and starting a normal mode;

the third starting module is used for starting the motion mode if the obtained motion mode instruction is received and the electromagnetic clutch disconnection signal is received;

and the fourth starting module is used for starting the snow sand mode if the acquired snow sand mode instruction is received.

On the other hand, the embodiment of the invention provides a storage medium, which comprises a stored program, wherein when the program runs, the device where the storage medium is located is controlled to execute the control method of the vehicle.

In another aspect, an embodiment of the present invention provides a vehicle control unit, which includes a memory and a processor, where the memory is used to store information including program instructions, and the processor is used to control execution of the program instructions, where the program instructions are loaded by the processor and executed to implement the steps of the control method of the vehicle.

According to the technical scheme of the vehicle control method, if the acquired pure electric mode instruction is received, the acquired SOC value of the first battery is judged to be larger than a first SOC threshold value, an electromagnetic clutch cut-off signal is received, and the pure electric mode is started; if the acquired normal mode instruction is received, judging that the SOC value of the first battery is smaller than a first SOC threshold value and receiving an electromagnetic clutch disconnection signal, and starting a normal mode; if the obtained motion mode instruction is received, and an electromagnetic clutch disconnection signal is received, starting the motion mode; and if the acquired snow sand mode command is received, starting the snow sand mode. The technical scheme provided by the embodiment of the invention can drive the vehicle according to different modes, thereby reducing the energy loss of the vehicle and reducing the oil consumption of the vehicle.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.

FIG. 1 is a flowchart of a control method of a vehicle when a pure electric mode is activated in an embodiment of the present invention;

FIG. 2 is a flow chart of a method of controlling a vehicle when a normal mode is initiated in an embodiment of the present invention;

FIG. 3 is a flow chart of a method of controlling a vehicle when a sport mode is initiated in an embodiment of the present invention;

FIG. 4 is a flow chart of a method of controlling a vehicle when starting a snow sand mode in an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a control device of a vehicle according to an embodiment of the present invention;

fig. 6 is a schematic view of a vehicle control unit according to an embodiment of the present invention.

[ detailed description ] embodiments

For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.

It should be understood that the described embodiments are only some embodiments of the invention, and not all 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.

The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that the term "and/or" as used herein is merely one type of associative relationship that describes an associated object, meaning that three types of relationships may exist, e.g., A and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

In the embodiment of the invention, as an alternative, a user can input a pure electric mode instruction through a Vehicle display screen, and the Vehicle display screen sends the pure electric mode instruction to a Vehicle Control Unit (VCU) so that the VCU can start the pure electric mode, and at the moment, the Vehicle can run according to the pure electric mode.

As another alternative, the user can input a normal mode command through the vehicle display screen, which commands the VCU to the normal mode, so that the VCU can turn on the normal mode, at which time the vehicle can travel in the normal mode.

As another alternative, the user can input a sport mode command via the vehicle display screen, which is referred to as VCU sport mode command for short, so that the VCU can start the sport mode, at which time the vehicle can travel according to the sport mode.

As another alternative, the user can input a snow sand mode command through the vehicle display screen, which instructs the VCU to snow sand mode so that the VCU can turn on the snow sand mode, at which time the vehicle can travel in the snow sand mode.

The embodiment of the invention provides a control method of a vehicle, which comprises the following steps:

as an alternative, if the acquired pure electric mode instruction is received, it is determined that the acquired first battery SOC value is greater than the first SOC threshold value and an electromagnetic clutch off signal is received, and the pure electric mode is started.

In the embodiment of the invention, each step is executed by the VCU.

In the embodiment of the invention, as an alternative, a user can input the pure electric mode instruction through the vehicle display screen to send the pure electric mode instruction to the VCU.

In the embodiment Of the invention, the battery management system acquires a State Of Charge (SOC) value Of a first battery and sends the SOC value Of the first battery to the VCU.

In the embodiment of the invention, if the electromagnetic clutch is disconnected, the electromagnetic clutch can send an electromagnetic clutch disconnection signal to the VCU.

In the embodiment of the invention, the first SOC threshold value can be set according to actual conditions.

As another alternative, if the acquired normal mode command is received, it is determined that the first battery SOC value is smaller than the first SOC threshold value and an electromagnetic clutch off signal is received, and the normal mode is started.

In the embodiment of the invention, as an alternative, a user can input a normal mode command through a vehicle display screen to send the normal mode command to the VCU.

As another alternative, when the acquired motion mode command is received and an electromagnetic clutch off signal is received, the motion mode is started.

In the embodiment of the present invention, as an alternative, the user can input the sport mode command through the vehicle display screen to send the sport mode command to the VCU.

As another alternative, the snow sand mode is activated when the acquired snow sand mode command is received.

In the embodiment of the invention, as an alternative, the user can input the snow sand mode instruction through the vehicle display screen to send the snow sand mode instruction to the VCU.

According to the technical scheme provided by the embodiment of the invention, if the acquired pure electric mode instruction is received, the acquired SOC value of the first battery is judged to be larger than a first SOC threshold value, and an electromagnetic clutch disconnection signal is received, so that the pure electric mode is started; if the acquired normal mode instruction is received, judging that the SOC value of the first battery is smaller than a first SOC threshold value and receiving an electromagnetic clutch disconnection signal, and starting a normal mode; if the obtained motion mode instruction is received, and an electromagnetic clutch disconnection signal is received, starting the motion mode; and if the acquired snow sand mode command is received, starting the snow sand mode. The technical scheme provided by the embodiment of the invention can drive the vehicle according to different modes, thereby reducing the energy loss of the vehicle and reducing the oil consumption of the vehicle.

According to the technical scheme provided by the embodiment of the invention, the engine can directly drive the vehicle to run, so that the oil consumption of the vehicle is reduced.

Fig. 1 is a flowchart of a control method of a vehicle when starting an electric only mode in an embodiment of the present invention, and as shown in fig. 1, the method includes:

step 202, judging whether an accelerator signal sent by an accelerator pedal sensor is received or not, if so, executing step 204; if not, go to step 210.

In the embodiment of the invention, each step is executed by the VCU.

In the embodiment of the invention, if the accelerator signal sent by the accelerator pedal sensor is judged to be received, the fact that a user steps on an accelerator pedal of a vehicle is indicated, and the accelerator pedal sensor sends the accelerator signal to the VCU; if the accelerator signal sent by the accelerator pedal sensor is judged not to be received, the fact that the user does not step on the accelerator pedal of the vehicle is indicated, and the accelerator pedal sensor does not send the accelerator signal to the VCU.

And step 204, sending a driving instruction to the rear-drive motor so that the rear-drive motor can drive the vehicle to run in response to the driving instruction.

Step 206, judging whether the obtained second battery SOC value is smaller than a first SOC threshold value, if so, executing step 208; if not, the process is ended.

In the embodiment of the invention, if the acquired SOC value of the second battery is judged to be smaller than the first SOC threshold value, the residual electric quantity of the battery is low, and the battery is not suitable for continuously using the pure electric mode; if the acquired SOC value of the second battery is judged to be larger than the first SOC threshold value, the residual electric quantity of the battery is high, and the battery is suitable for continuously using the pure electric mode.

In the embodiment of the invention, the battery management system acquires the SOC value of the second battery and sends the SOC value of the second battery to the VCU.

Step 208, start the normal mode.

In this step, the VCU exits the pure electric mode and starts the normal mode.

Step 210, judging whether the acquired fifth vehicle speed value is greater than a third vehicle speed threshold value, if so, executing step 212; if not, the process is ended.

In the embodiment of the invention, the vehicle speed sensor acquires a fifth vehicle speed value and sends the fifth vehicle speed value to the VCU.

In the embodiment of the invention, if the acquired fifth vehicle speed value is judged to be greater than the third vehicle speed threshold value, the current vehicle speed is relatively fast; and if the acquired fifth vehicle speed value is smaller than the third vehicle speed threshold value, the current vehicle speed is slow.

In the embodiment of the invention, the third vehicle speed threshold value can be set according to actual conditions.

Step 212, judging whether the obtained seventh battery SOC is smaller than a fifth SOC threshold, if so, executing step 214; if not, the process is ended.

In the embodiment of the invention, the battery management system acquires the seventh battery SOC value and sends the seventh battery SOC value to the VCU.

In the embodiment of the invention, if the obtained seventh battery SOC is judged to be smaller than the fifth SOC threshold value, the residual capacity of the battery is low; and if the obtained seventh battery SOC is larger than the fifth SOC threshold value, the fact that the residual capacity of the battery is high is indicated.

In the embodiment of the present invention, the fifth SOC threshold may be set according to actual conditions.

In the embodiment of the present invention, as an alternative, if it is determined that the obtained seventh battery SOC is greater than the fifth SOC threshold, the vehicle is coasting without energy feedback, and when the fifth vehicle speed value is less than the third vehicle speed threshold, the vehicle may be coasting to a stop or the vehicle is braked.

And step 214, sending a feeding command to the driving motor, so that the driving motor feeds power in response to the feeding command.

Fig. 2 is a flowchart of a method for controlling a vehicle when a normal mode is activated according to an embodiment of the present invention, as shown in fig. 2, the method includes:

step 302, judging whether an accelerator signal sent by an accelerator pedal sensor is received; if yes, go to step 304; if not, go to step 336.

In the embodiment of the invention, each step is executed by the VCU.

In the embodiment of the invention, if the accelerator signal sent by the accelerator pedal sensor is judged to be received, the user is indicated to step on the accelerator pedal of the vehicle, and the accelerator pedal sensor sends the accelerator signal to the VCU; if the accelerator signal sent by the accelerator pedal sensor is judged not to be received, the fact that the user does not tread the accelerator pedal of the vehicle is indicated, and the accelerator pedal sensor does not send the accelerator signal to the VCU.

Step 304, judging whether the obtained third battery SOC value is larger than or smaller than a first SOC threshold value, and if the third battery SOC value is larger than the first SOC threshold value, executing step 306; if the third battery SOC is smaller than the first SOC threshold, step 308 is executed.

In the embodiment of the invention, if the obtained third battery SOC value is judged to be smaller than the first SOC threshold value, the residual electric quantity of the battery is low; and if the acquired third battery SOC value is judged to be larger than the first SOC threshold value, the residual capacity of the battery is high.

In the embodiment of the invention, the battery management system acquires the SOC value of the third battery and sends the SOC value of the third battery to the VCU.

And step 306, starting the pure electric mode.

In this step, the VCU exits the normal mode and starts the pure electric mode.

And step 308, sending a starting instruction to the engine so that the engine can start power generation in response to the starting instruction.

Step 310, judging whether the acquired first vehicle speed value is greater than or less than a first vehicle speed threshold value, and if the first vehicle speed value is smaller than the first vehicle speed threshold value, executing step 312; if the first vehicle speed value is greater than the first vehicle speed threshold value, step 316 is executed.

In the embodiment of the invention, the vehicle speed sensor acquires the first vehicle speed value and sends the first vehicle speed value to the VCU.

In the embodiment of the invention, if the acquired first vehicle speed value is judged to be greater than the first vehicle speed threshold value, the current vehicle speed is relatively high; and if the acquired first vehicle speed value is smaller than the first vehicle speed threshold value, the current vehicle speed is slow.

In the embodiment of the invention, the first vehicle speed threshold value can be set according to actual conditions.

Step 312, start the range extension mode.

Specifically, a driving command is sent to the rear-drive motor, so that the rear-drive motor drives the vehicle to run in response to the driving command. And sending a starting instruction to the engine to start power generation by the engine in response to the starting instruction, wherein the power generated by the engine is used for driving the rear-drive motor-driven vehicle to run.

Step 314, judging whether the acquired second vehicle speed value is greater than the first vehicle speed threshold value and whether the acquired fourth battery SOC is less than the second SOC threshold value, if so, executing step 316; if not, the process is ended.

In the embodiment of the invention, the vehicle speed sensor acquires the second vehicle speed value and sends the second vehicle speed value to the VCU.

In the embodiment of the invention, the battery management system acquires the SOC value of the fourth battery and sends the SOC value of the fourth battery to the VCU.

In the embodiment of the invention, if the second acquired vehicle speed value is judged to be greater than the first vehicle speed threshold value and the SOC of the fourth battery is judged to be less than the second SOC threshold value, the current vehicle speed is faster and the residual capacity of the battery is lower; if the obtained second vehicle speed value is smaller than the first vehicle speed threshold value and the obtained fourth battery SOC is smaller than the second SOC threshold value, the current vehicle speed is slow and the remaining capacity of the battery is low; if the obtained second vehicle speed value is larger than the first vehicle speed threshold value and the obtained fourth battery SOC is larger than the second SOC threshold value, the current vehicle speed is fast and the remaining capacity of the battery is high; if the second vehicle speed value is smaller than the first vehicle speed threshold value and the fourth battery SOC is larger than the second SOC threshold value, it is indicated that the current vehicle speed is slow and the remaining capacity of the battery is high.

In the embodiment of the invention, the first vehicle speed threshold value and the second SOC threshold value can be set according to actual conditions.

Step 316, sending a closing command to the electromagnetic clutch so that the electromagnetic clutch closes in response to the closing command.

Step 318, sending a vehicle driving command to the engine, so that the engine drives the vehicle to run in response to the vehicle driving command.

In the embodiment of the invention, the generator generates electricity, and the electricity generated by the generator is used for driving the vehicle to run by the engine.

And step 320, collecting the torque demand of the whole vehicle and the output torque of the engine.

322, judging whether the torque demand of the whole vehicle is greater than or less than the output torque of the engine, and executing 324 if the torque demand of the whole vehicle is greater than the output torque of the engine; and if the torque demand of the whole vehicle is judged to be smaller than the output torque of the engine, executing step 330.

In the embodiment of the invention, if the torque requirement of the whole vehicle is judged to be larger than the output torque of the engine, the engine is indicated to be incapable of meeting the vehicle speed requirement of the vehicle; and if the torque requirement of the whole vehicle is judged to be smaller than the output torque of the engine, the engine is shown to be capable of meeting the vehicle speed requirement of the vehicle.

And 324, sending a driving instruction to the rear-drive motor so that the rear-drive motor can be driven in response to the driving instruction.

In the embodiment of the invention, the sum of the driving torque of the rear drive motor and the output torque of the engine is equal to the torque required by the whole vehicle, and the rear drive motor can be driven according to the driving torque of the rear drive motor.

Step 326, judging whether the acquired third vehicle speed value is greater than or less than the first vehicle speed threshold value, and if the third vehicle speed value is smaller than the first vehicle speed threshold value, executing step 328; if the third vehicle speed value is greater than the first vehicle speed threshold value, go to step 318.

In the embodiment of the invention, the vehicle speed sensor acquires a third vehicle speed value and sends the third vehicle speed value to the VCU.

In the embodiment of the invention, if the obtained third vehicle speed value is judged to be greater than the first vehicle speed threshold value, the current vehicle speed is relatively high; and if the acquired third vehicle speed value is smaller than the first vehicle speed threshold value, the current vehicle speed is slow.

Step 328, send an off command to the electromagnetic clutch for the electromagnetic clutch to turn off in response to the off command and initiate the normal mode.

Step 330, sending a power generation instruction to the generator for the generator to generate power in response to the power generation instruction.

As an alternative, the generator generates electricity to charge the battery pack in response to the power generation instruction. For example, the generator can generate power from the generated power [ engine speed (engine output torque — vehicle required torque)/9550 ] + the rear drive motor feed power.

Step 332, judging whether the obtained ninth battery SOC is greater than a sixth SOC threshold, if so, executing step 334; if not, the process is ended.

In the embodiment of the invention, the battery management system acquires the ninth battery SOC value and sends the ninth battery SOC value to the VCU.

In the embodiment of the invention, if the obtained ninth battery SOC is judged to be smaller than the sixth SOC threshold value, the residual capacity of the battery is low; and if the obtained ninth battery SOC is larger than the sixth SOC threshold value, the fact that the residual capacity of the battery is high is indicated.

In the embodiment of the present invention, the sixth SOC threshold may be set according to actual conditions.

Step 334, sending a power generation stopping instruction to the generator for the generator to stop generating power in response to the power generation instruction, and continuing to execute step 306.

Step 336, judging whether the acquired sixth vehicle speed value is greater than a third vehicle speed threshold value, if so, executing step 338; if not, the process is ended.

In the embodiment of the invention, the vehicle speed sensor acquires a sixth vehicle speed value and sends the sixth vehicle speed value to the VCU.

In the embodiment of the invention, if the acquired sixth vehicle speed value is judged to be greater than the third vehicle speed threshold value, the current vehicle speed is relatively fast; and if the acquired sixth vehicle speed value is smaller than the third vehicle speed threshold value, the current vehicle speed is slow.

338, judging whether the obtained eighth battery SOC is smaller than a fifth SOC threshold, if so, executing 340; if not, the process is ended.

In the embodiment of the invention, the battery management system acquires the eighth battery SOC value and sends the eighth battery SOC value to the VCU.

In the embodiment of the invention, if the obtained eighth battery SOC is judged to be smaller than the fifth SOC threshold value, the residual capacity of the battery is low; and if the obtained eighth battery SOC is judged to be larger than the fifth SOC threshold value, the fact that the residual capacity of the battery is high is indicated.

In the embodiment of the present invention, as an alternative, if it is determined that the acquired eighth battery SOC is greater than the fifth SOC threshold, the vehicle is coasting without energy feedback, and when the sixth vehicle speed value is less than the third vehicle speed threshold, the vehicle may be coasting to a stop or the vehicle is braked.

Step 340, judging whether an electromagnetic clutch off signal or an electromagnetic clutch on signal is received, and if so, executing step 342; if it is determined that the electromagnetic clutch close signal is received, go to step 344.

In the embodiment of the invention, if the electromagnetic clutch is disconnected, the electromagnetic clutch can send an electromagnetic clutch disconnection signal to the VCU; if the electromagnetic clutch is closed, the electromagnetic clutch can send an electromagnetic clutch closing signal to the VCU.

In the embodiment of the invention, if the electromagnetic clutch disconnection signal is judged to be received, the electromagnetic clutch is indicated to be disconnected; and if the electromagnetic clutch closing signal is judged to be received, indicating that the electromagnetic clutch is closed.

And 342, sending a feeding instruction to the driving motor, so that the driving motor can feed power in response to the feeding instruction.

In this step, the driving motor feeds power, and the engine stops generating power.

Step 344, sending a feeding command to the generator and the driving motor, so that the generator and the driving motor can feed power in response to the feeding command.

In the step, the generator and the driving motor feed power, and the engine outputs no torque.

Fig. 3 is a flowchart of a control method of a vehicle when a sport mode is activated according to an embodiment of the present invention, as shown in fig. 3, the method includes:

step 402, judging whether the acquired fifth battery SOC is greater than or less than a third SOC threshold value, and if the acquired fifth battery SOC is greater than the third SOC threshold value, executing step 404; if the fifth battery SOC is smaller than the third SOC threshold, go to step 414.

In the embodiment of the invention, if the SOC of the fifth battery is judged to be larger than the third SOC threshold value, the residual capacity of the battery is higher; and if the fifth battery SOC is judged to be smaller than the third SOC threshold value, the fact that the residual capacity of the battery is low is indicated.

And step 404, acquiring the rotating speed of the electromagnetic clutch and the rotating speed of the wheel.

As an alternative, a speed sensor can acquire electromagnetic clutch speed and a wheel speed sensor can acquire wheel speed. The VCU is capable of collecting the electromagnetic clutch speed from the speed sensor and the wheel speed from the wheel speed sensor.

Step 406, judging whether the difference value between the rotating speed of the electromagnetic clutch and the rotating speed of the wheel is smaller than a set threshold value, if so, executing step 408; if not, the process is ended.

In the embodiment of the invention, if the difference value between the rotating speed of the electromagnetic clutch and the rotating speed of the wheel is judged to be smaller than the set threshold, the rotating speed of the electromagnetic clutch can meet the requirement of the rotating speed of the wheel; and if the difference value between the rotating speed of the electromagnetic clutch and the rotating speed of the wheel is judged to be larger than the set threshold value, indicating that the rotating speed of the electromagnetic clutch cannot meet the requirement of the rotating speed of the wheel.

And step 408, sending a closing instruction to the electromagnetic clutch so that the electromagnetic clutch is closed in response to the closing instruction.

Step 410, judging whether the acquired current vehicle speed reaches the engine starting rotating speed, if so, executing step 412; if not, the process is ended.

In the embodiment of the invention, the vehicle speed sensor can acquire the current vehicle speed and send the current vehicle speed to the VCU.

Alternatively, the VCU stores a corresponding relationship between a standard vehicle speed and an engine start-up speed, for example, the engine start-up speed is 800r/min, the standard vehicle speed is 20km/h, and if the current vehicle speed is greater than the standard vehicle speed, it indicates that the current vehicle speed can reach the engine start-up speed.

And step 412, sending a vehicle driving command to the engine, so that the engine can drive the vehicle to run in response to the vehicle driving command.

Step 414, start the normal mode.

Fig. 4 is a flowchart of a control method of a vehicle when starting a snow sand mode according to an embodiment of the present invention, as shown in fig. 4, the method includes:

step 502, judging whether the acquired sixth battery SOC is greater than or less than a fourth SOC threshold value, and if the sixth battery SOC is greater than the fourth SOC threshold value, executing step 504; if the sixth battery SOC is smaller than the fourth SOC threshold, go to step 508.

In the embodiment of the invention, the battery management system acquires the sixth battery SOC value and sends the sixth battery SOC value to the VCU.

In the embodiment of the invention, if the acquired sixth battery SOC is judged to be smaller than the fourth SOC threshold value, the residual capacity of the battery is low; and if the acquired sixth battery SOC is judged to be larger than the fourth SOC threshold value, the fact that the residual capacity of the battery is high is indicated.

In the embodiment of the present invention, the fourth SOC threshold can be set according to actual conditions.

And step 504, sending a closing instruction to the electromagnetic clutch so that the electromagnetic clutch is closed in response to the closing instruction.

Step 506, judging whether the acquired fourth vehicle speed value is greater than or less than a second vehicle speed threshold value, and if the fourth vehicle speed value is greater than the second vehicle speed threshold value, executing step 508; and if the fourth vehicle speed value is smaller than the second vehicle speed threshold value, ending the process.

In the embodiment of the invention, the vehicle speed sensor acquires the fourth vehicle speed value and sends the fourth vehicle speed value to the VCU.

In the embodiment of the invention, if the fourth acquired vehicle speed value is judged to be greater than the second vehicle speed threshold value, the current vehicle speed is relatively high; and if the acquired fourth vehicle speed value is smaller than the second vehicle speed threshold value, the current vehicle speed is slow.

In the embodiment of the invention, the second vehicle speed threshold value can be set according to actual conditions.

Step 508, start the normal mode.

The embodiment of the invention provides a control device of a vehicle. Fig. 5 is a schematic structural diagram of a control device of a vehicle according to an embodiment of the present invention, and as shown in fig. 5, the device includes: a first enabling module 11, a second enabling module 12, a third enabling module 13 and a fourth enabling module 14.

The first starting module 11 is used for judging that the first battery SOC value is greater than the first SOC threshold value and receiving an electromagnetic clutch turn-off signal to start the pure electric mode if receiving a pure electric mode instruction input by a user.

The second starting module 12 is configured to, if the acquired normal mode instruction is received, determine that the first battery SOC value is smaller than the first SOC threshold value and receive an electromagnetic clutch off signal, and start the normal mode.

The third starting module 13 is configured to start the motion mode if receiving the acquired motion mode command and receiving an electromagnetic clutch off signal.

The fourth starting module 14 is configured to start the snow sand mode if the acquired snow sand mode command is received.

In the embodiment of the present invention, the apparatus further includes: a first judging module 15, a sending module 16 and a second judging module 17.

The first judging module 15 is configured to judge whether an accelerator signal sent by an accelerator pedal sensor is received, and if it is judged that the accelerator signal sent by the accelerator pedal sensor is received, the triggering sending module 16 sends a driving instruction to the rear-drive motor, so that the rear-drive motor drives the vehicle to run in response to the driving instruction.

The second judging module 17 is configured to judge whether the obtained second battery SOC value is smaller than the first SOC threshold, and if it is judged that the second battery SOC value is smaller than the first SOC threshold, trigger the second starting module 12 to continue executing the step of starting the normal mode.

In the embodiment of the present invention, the apparatus further includes: a third judging module 18, a fourth judging module 19, a fifth starting module 20 and a fifth judging module 21.

The first judging module 15 is further configured to judge whether an accelerator signal sent by an accelerator pedal sensor is received, and if the accelerator signal sent by the accelerator pedal sensor is judged to be received, trigger the third judging module 18 to judge whether the acquired third battery SOC value is greater than or less than a first SOC threshold value; if the third battery SOC value is greater than the first SOC threshold, the first starting module 11 is triggered to continue executing the step of starting the pure electric mode, and if the third battery SOC value is smaller than the first SOC threshold, the sending module 16 is triggered to send a starting instruction to the engine, so that the engine starts power generation in response to the starting instruction.

The fourth determining module 19 is configured to determine whether the acquired first vehicle speed value is greater than or less than a first vehicle speed threshold, and trigger the fifth starting module 20 to start the range extending mode if the first vehicle speed value is less than the first vehicle speed threshold.

The fifth judging module 21 is configured to judge whether the obtained second vehicle speed value is greater than or less than the first vehicle speed threshold and whether the obtained fourth battery SOC is greater than or less than the second SOC threshold; if the second vehicle speed value is greater than the first vehicle speed threshold value and the fourth battery SOC is less than the second SOC threshold value, the sending module 16 is triggered to send a closing instruction to the electromagnetic clutch so that the electromagnetic clutch is closed in response to the closing instruction.

The sending module 16 is further configured to send a vehicle driving instruction to the engine, so that the engine drives the vehicle to run in response to the vehicle driving instruction.

In the embodiment of the present invention, the apparatus further includes: a first acquisition module 22, a sixth judgment module 23 and a seventh judgment module 24.

The first acquisition module 22 is used for acquiring the torque demand of the whole vehicle and the output torque of the engine.

The sixth judging module 23 is configured to judge whether the finished vehicle torque demand is greater than or less than the engine output torque, and if it is judged that the finished vehicle torque demand is greater than the engine output torque, trigger the sending module 16 to send a driving instruction to the rear drive motor, so that the rear drive motor is driven in response to the driving instruction.

The seventh determining module 24 is configured to determine whether the acquired third vehicle speed value is greater than or less than the first vehicle speed threshold, and if it is determined that the third vehicle speed value is less than the first vehicle speed threshold, trigger the sending module 16 to send a disconnection instruction to the electromagnetic clutch, so that the electromagnetic clutch is disconnected in response to the disconnection instruction, and trigger the second starting module 12 to continue to execute the step of starting the normal mode.

In the embodiment of the present invention, the apparatus further includes: an eighth judging module 25, a second collecting module 26, a ninth judging module 27 and a tenth judging module 28.

The eighth judging module 25 is configured to judge whether the obtained fifth battery SOC is greater than or less than a third SOC threshold, and trigger the second acquiring module 26 to acquire the electromagnetic clutch rotation speed and the wheel rotation speed if the fifth battery SOC is greater than the third SOC threshold; and if the fifth battery SOC is smaller than the third SOC threshold value, triggering the second starting module 12 to continue executing the step of starting the normal mode.

The ninth determining module 27 is configured to determine whether a difference between the rotational speed of the electromagnetic clutch and the rotational speed of the wheel is smaller than a set threshold, and if the difference between the rotational speed of the electromagnetic clutch and the rotational speed of the wheel is smaller than the set threshold, trigger the sending module 16 to send a closing instruction to the electromagnetic clutch, so that the electromagnetic clutch closes in response to the closing instruction.

The tenth determining module 28 is configured to determine whether the acquired current vehicle speed reaches an engine starting rotation speed, and if it is determined that the acquired current vehicle speed reaches the engine starting rotation speed, trigger the sending module 16 to send a vehicle driving instruction to the engine, so that the engine drives the vehicle to run in response to the vehicle driving instruction.

In the embodiment of the present invention, the apparatus further includes: an eleventh judging module 29 and a twelfth judging module 30.

The eleventh determining module 29 is configured to determine whether the acquired sixth battery SOC is greater than or less than the fourth SOC threshold, and if the sixth battery SOC is greater than the fourth SOC threshold, trigger the sending module 16 to send a close instruction to the electromagnetic clutch, so that the electromagnetic clutch closes in response to the close instruction.

The twelfth judging module 30 is configured to judge whether the obtained fourth vehicle speed value is greater than or less than the second vehicle speed threshold, and if it is judged that the fourth vehicle speed value is greater than the second vehicle speed threshold, trigger the second starting module 12 to continue to execute the step of starting the normal mode;

if the eleventh determining module 29 determines that the sixth battery SOC is smaller than the fourth SOC threshold, it triggers the second starting module 12 to continue executing the step of starting the normal mode.

In the embodiment of the present invention, the apparatus further includes: a thirteenth judging module 31 and a fourteenth judging module 32.

If the first determining module 15 determines that the accelerator signal sent by the accelerator pedal sensor is not received, the thirteenth determining module 31 is triggered to determine whether the acquired fifth vehicle speed value is greater than the third vehicle speed threshold, if the fifth vehicle speed value is greater than the third vehicle speed threshold, the fourteenth determining module 32 is triggered to determine whether the acquired seventh battery SOC is less than the fifth SOC threshold, and if the seventh battery SOC is less than the fifth SOC threshold, the sending module 16 is triggered to send a feeding instruction to the driving motor, so that the driving motor feeds in response to the feeding instruction.

In the embodiment of the present invention, the apparatus further includes: a fifteenth determining module 33, a sixteenth determining module 34 and a seventeenth determining module 35.

If the first judging module 15 judges that the accelerator signal sent by the accelerator pedal sensor is not received, the fifteenth judging module 33 is triggered to judge whether the acquired sixth vehicle speed value is greater than the third vehicle speed threshold value, if the sixth vehicle speed value is greater than the third vehicle speed threshold value, the sixteenth judging module 34 is triggered to judge whether the acquired eighth battery SOC is less than the fifth SOC threshold value, and if the eighth battery SOC is less than the fifth SOC threshold value, the seventeenth judging module 35 is triggered to judge whether the electromagnetic clutch turn-off signal or the electromagnetic clutch turn-on signal is received; if the electromagnetic clutch disconnection signal is judged to be received, the triggering and sending module 16 sends a feeding instruction to the driving motor, so that the driving motor can feed in response to the feeding instruction; if the electromagnetic clutch closing signal is judged to be received, the trigger sending module 16 sends a feeding instruction to the generator and the driving motor, so that the generator and the driving motor can feed power in response to the feeding instruction.

In the embodiment of the present invention, the apparatus further includes: an eighteenth decision module 36.

If the sixth judging module 23 judges that the torque demand of the whole vehicle is smaller than the output torque of the engine, the sending module 16 is triggered to send a power generation instruction to the generator, so that the generator generates power in response to the power generation instruction.

The eighteenth judging module 36 is configured to judge whether the obtained ninth battery SOC is greater than the sixth SOC threshold, and if it is judged that the ninth battery SOC is greater than the sixth SOC threshold, trigger the sending module 16 to send a power generation stop instruction to the generator, so that the generator stops generating power in response to the power generation instruction, and trigger the first starting module 11 to continue to execute the step of starting the pure electric mode.

The control device of the vehicle provided by the embodiment can be used for realizing the control method of the vehicle in fig. 1 to 4, and specific description can be referred to the embodiment of the control method of the vehicle, and the detailed description is not repeated here.

Embodiments of the present invention provide a storage medium, where the storage medium includes a stored program, where, when the program is executed, a device on which the storage medium is controlled to execute each step of an embodiment of the control method for a vehicle described above, and specific description may refer to the embodiment of the control method for a vehicle described above.

The embodiment of the invention provides a vehicle control unit, which comprises a memory and a processor, wherein the memory is used for storing information comprising program instructions, the processor is used for controlling the execution of the program instructions, and the program instructions are loaded by the processor and executed to realize the steps of the embodiment of the control method of the vehicle.

Fig. 6 is a schematic view of a vehicle control unit according to an embodiment of the present invention. As shown in fig. 6, the vehicle control unit 70 of this embodiment includes: the processor 71, the memory 72, and the computer program 73 stored in the memory 72 and capable of running on the processor 71, wherein the computer program 73 is executed by the processor 71 to implement the control method applied to the vehicle in the embodiment, and in order to avoid repetition, details are not repeated herein. Alternatively, the computer program is executed by the processor 71 to implement the functions of each model/unit in the control device applied to the vehicle in the embodiment, which are not described herein again to avoid redundancy.

The vehicle control unit 70 includes, but is not limited to, a processor 71 and a memory 72. Those skilled in the art will appreciate that fig. 6 is merely an example of a vehicle control unit 70 and does not constitute a limitation of vehicle control unit 70 and may include more or fewer components than shown, or some components in combination, or different components, e.g., the vehicle control unit may also include input-output devices, network access devices, buses, etc.

The Processor 71 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

Memory 72 may be an internal storage unit of vehicle control unit 70, such as a hard disk or a memory of vehicle control unit 70. The memory 72 may also be an external storage device of the vehicle control unit 70, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), etc. provided on the vehicle control unit 70. Further, memory 72 may also include both an internal memory unit of vehicle control unit 70 and an external memory device. The memory 72 is used to store computer programs and other programs and data required by the hybrid vehicle controller. The memory 72 may also be used to temporarily store data that has been output or is to be output.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the embodiments provided in the present invention, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions in actual implementation, for example, a plurality of 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, devices or units, and may be in an electrical, mechanical 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 network 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, or in a form of hardware plus a software functional unit.

The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) or a Processor (Processor) to execute some steps of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A control method of a vehicle, characterized by comprising:

if the acquired pure electric mode instruction is received, judging that the acquired first battery SOC value is larger than a first SOC threshold value and receiving an electromagnetic clutch disconnection signal, and starting the pure electric mode; alternatively, the first and second electrodes may be,

if the acquired normal mode instruction is received, judging that the SOC value of the first battery is smaller than the first SOC threshold value and receiving an electromagnetic clutch turn-off signal, and starting a normal mode; alternatively, the first and second electrodes may be,

if the obtained motion mode instruction is received, and the electromagnetic clutch disconnection signal is received, starting the motion mode; alternatively, the first and second electrodes may be,

2. The method of claim 1, comprising, after the initiating the electric-only mode:

3. The method of claim 1, wherein the initiating the normal mode comprises, after:

4. The method of claim 3, wherein said sending a start command to an engine for said engine-driven vehicle to travel comprises, after:

5. The method of claim 1, wherein said initiating a motion pattern is followed by:

6. The method of claim 1, wherein said initiating a snowsand mode comprises, after:

7. The method of claim 2, further comprising:

8. The method of claim 3, further comprising:

9. The method of claim 4, further comprising:

10. A control apparatus of a vehicle, characterized by comprising:

11. A storage medium characterized by comprising a stored program, wherein a device in which the storage medium is located is controlled to execute the control method of the vehicle according to any one of claims 1 to 9 when the program is executed.

12. A vehicle control unit comprising a memory for storing information including program instructions and a processor for controlling the execution of the program instructions, characterized in that the program instructions are loaded and executed by the processor to implement the steps of the control method of the vehicle according to any one of claims 1 to 9.