CN113715803A

CN113715803A - Controller, control method and medium for vehicle with hybrid coupling system

Info

Publication number: CN113715803A
Application number: CN202010441386.5A
Authority: CN
Inventors: 赵江灵; 朱永明; 周文太; 李瑶瑶; 魏丹; 苏建云
Original assignee: Guangzhou Automobile Group Co Ltd
Current assignee: Guangzhou Automobile Group Co Ltd
Priority date: 2020-05-22
Filing date: 2020-05-22
Publication date: 2021-11-30

Abstract

The invention discloses a controller, a control method and a computer readable storage medium of a vehicle with a hybrid coupling system, wherein the hybrid coupling system comprises an engine and a plurality of motors, the controller can control the engine and at least one motor of the hybrid coupling system to provide torque to work in a corresponding working mode, and the controller is arranged to: determining a driving style of a driver; determining whether an access condition is required to be determined for a driving mode corresponding to a driving style; if the driving mode needs to be subjected to admission condition determination, determining whether the vehicle currently meets the admission condition of the driving mode; if the access condition of the driving mode is met, controlling the vehicle to enter the driving mode so as to enable the hybrid power coupling system to work in a working mode corresponding to the driving mode; and if the admittance condition of the driving mode is not met, controlling the vehicle to enter a transfer driving mode corresponding to the driving mode so as to enable the hybrid coupling system to work in a working mode corresponding to the transfer driving mode.

Description

Controller, control method and medium for vehicle with hybrid coupling system

Technical Field

The present invention relates to the field of vehicle control technologies, and in particular, to a controller, a control method, and a medium for a vehicle with a hybrid coupling system.

Background

The drivability of a vehicle is a combination of the demands of most consumers, and a balance is achieved between the dynamic performance and the economic performance. The drivability of the automobile is difficult to satisfy the demands of all drivers having different genders, ages, and driving styles. Such as: for some young male drivers, the pursuit of power is relatively high, the strong power is hoped, and the economical efficiency is not particularly seen; for some female consumers, comfort and economy may be more sought, and the need for motivation is not obvious. Therefore, many automobile companies have introduced driving style buttons, and drivers can manually select different driving modes, and different types of drivers can select the driving modes according to their own needs.

In the prior art, different driving styles in different driving modes are generally controlled by the speed of power response, for example, if the economic requirement is high, the power demand response is adjusted to be slow, and if the power demand response is high, the power demand response is fast.

Therefore, the control method in the prior art is simple, only starts with the power response speed, and has a single style, for example, in an economic mode, the function of reducing the power performance can be realized by controlling the response speed of the accelerator pedal, but the style after the power response speed adjustment is not necessarily required by a user, the economy is related to the action point of a power source, and the style after the power response speed adjustment is not necessarily the best state of the economy of the whole vehicle.

Disclosure of Invention

The invention provides a controller, a control method and a computer readable storage medium of a vehicle with a hybrid coupling system, which aim to solve the problem that the vehicle does not necessarily work at a working point with better overall economy after responding to a driver in the prior art.

In a first aspect, there is provided a controller for a vehicle having a hybrid coupling system, the hybrid coupling system comprising an engine and a plurality of electric machines, the controller being capable of controlling the engine and at least one electric machine of the hybrid coupling system to provide torque to operate in respective operating modes, the controller being arranged to:

determining a driving style of a driver;

determining whether the driving mode corresponding to the driving style needs to be subjected to admission condition determination;

if the driving mode needs to be subjected to admission condition determination, determining whether the vehicle meets the admission condition of the driving mode at present;

if the admission condition of the driving mode is met, controlling the vehicle to enter the driving mode so as to enable the hybrid power coupling system to work in a working mode corresponding to the driving mode;

and if the admittance condition of the driving mode is not met, controlling the vehicle to enter a transfer driving mode corresponding to the driving mode so as to enable the hybrid power coupling system to work in a working mode corresponding to the transfer driving mode.

Further, the mode type of the driving mode includes a normal mode, the controller is arranged to:

determining whether a mode type of the driving mode is a normal mode;

if the driving mode is the common mode, determining that the driving mode does not need to be subjected to admission condition determination;

and if the driving mode is not the common mode, determining that the driving mode needs to be subjected to admission condition determination.

Further, the mode types of the driving mode further include a power mode, an economy mode, and a sport mode;

if the driving mode is the electric mode, the switching driving mode corresponding to the driving mode is the economic mode;

if the driving mode is the economy mode, the switching driving mode corresponding to the driving mode is the common mode;

and if the driving mode is the motion mode, the switching driving mode corresponding to the driving mode is the common mode.

Further, after controlling the vehicle to enter the driving mode, the controller is further arranged to:

determining whether the vehicle currently satisfies a cut-out condition of the driving mode;

if the vehicle currently meets the switching-out condition of the driving mode, controlling the vehicle to switch out the driving mode and enter the switching-over driving mode;

and if the vehicle does not meet the cut-out condition of the driving mode currently, controlling the vehicle to keep the driving mode continuously.

Further, if the driving mode is the sport mode, the switching-out condition of the driving mode includes: the electric quantity of the power battery is lower than a preset electric quantity threshold value;

if the driving mode is the economy mode, the switching-out condition of the driving mode comprises the following steps: the power demand increases;

if the driving mode is the motion mode, the switching-out condition of the driving mode comprises: the target part temperature is above a preset temperature threshold.

Further, the controller can control the working modes of the hybrid power coupling system to include an engine direct-drive 1-gear mode, an engine direct-drive 2-gear mode, a hybrid drive 1-mode, a hybrid drive 2-mode, a dual-motor drive 1-mode, a dual-motor drive 2-mode, a single-motor pure electric mode and a series range-extending mode;

the working mode corresponding to the electric mode is the single-motor pure electric mode, the double-motor driving 1 mode or the double-motor driving 2 mode;

the working mode corresponding to the economic mode is the single-motor pure electric mode, the hybrid drive 2 mode, the engine direct drive 2-gear mode or the series range extending mode;

the working mode corresponding to the motion mode is the dual-motor drive 1 mode, the hybrid drive 1 mode or the series range extending mode;

the working modes corresponding to the common mode include all working modes of the hybrid power coupling system.

In a second aspect, there is provided a method of controlling a vehicle having a hybrid coupling system including an engine and a plurality of electric machines, the method being capable of controlling the engine and at least one electric machine of the hybrid coupling system to provide torque to operate in respective operating modes, the method comprising:

determining a driving style of a driver;

In a third aspect, a controller for a vehicle having a hybrid coupling system including an engine and a plurality of electric machines is provided, the controller being capable of controlling the engine and at least one electric machine of the hybrid coupling system to provide torque to operate in respective operating modes, the controller comprising:

the device comprises a first determination module, a second determination module and a control module, wherein the first determination module is used for determining the driving style selected by a driver;

the second determination module is used for determining whether the driving mode corresponding to the driving style needs to be subjected to admission condition determination;

a third determining module, configured to determine whether the vehicle currently meets the admission condition of the driving mode if the second determining module determines that the admission condition of the driving mode needs to be determined;

the control module is used for controlling the vehicle to enter the driving mode to enable the hybrid coupling system to work in a working mode corresponding to the driving mode if the third determination module determines that the vehicle meets the admission condition of the driving mode;

the control module is further configured to control the vehicle to enter a transfer driving mode corresponding to the driving mode to enable the hybrid coupling system to operate in a working mode corresponding to the transfer driving mode if the third determination module determines that the vehicle does not meet the admission condition of the driving mode.

Further, the mode type of the driving mode includes a normal mode, and the second determining module is specifically configured to:

determining whether a mode type of the driving mode is a normal mode;

In a fourth aspect, a computer-readable storage medium is provided, which stores a computer program that, when executed by a processor, implements the steps of the control method as described above.

In one scheme implemented by the controller and the control method of the vehicle with the hybrid coupling system, different working modes are arranged under different driving styles so as to meet requirements of different driving styles, when the admittance condition of the driving mode is not met, the vehicle can be directly switched to a switching driving mode with the minimum difference with the driving mode selected by a driver so as to realize the response most fit with the requirement of the driver, so that the vehicle can be effectively ensured to work on the driving requirement style fit with the driver, and the admittance condition and the switching-out condition of the driving mode can be judged so as to control the driving mode of the vehicle in real time so that a power source of the vehicle can work at a required working point, and the driving control method can more fittingly respond to the requirement of the driver and effectively control the working point of the power source without a simple mode of adjusting the power response speed in the prior art, the vehicle is operated at a better economic point.

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 description of the embodiments of the present invention will be briefly introduced 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 that other drawings can be obtained according to these drawings without inventive labor.

FIG. 1 is a schematic structural diagram of a hybrid coupling system of the present invention;

FIG. 2 is a schematic diagram of the hybrid coupling system in the hybrid 1 mode of the present invention;

FIG. 3 is a state diagram of the hybrid coupling system in the hybrid drive 2 mode of the present invention;

FIG. 4 is a schematic diagram of the hybrid coupling system in the dual motor drive 1 mode of the present invention;

FIG. 5 is a schematic diagram of the hybrid coupling system in the dual motor drive mode 2 of the present invention;

FIG. 6 is a schematic state diagram of the hybrid coupling system in the single-motor electric-only mode of the present invention;

FIG. 7 is a state diagram of the hybrid coupling system in the series extended range mode of the present invention;

FIG. 8 is a schematic diagram of the hybrid coupling system in the park power generation mode of the present invention;

FIG. 9 is a schematic wheel end torque output for different operating modes of the hybrid coupling system of the present invention;

FIG. 10 is a schematic flow chart of one embodiment of a controller implemented in a vehicle having a hybrid coupling system in accordance with the present invention;

FIG. 11 is a schematic flow chart of another embodiment of a controller implemented in a vehicle having a hybrid coupling system in accordance with the present invention;

FIG. 12 is a schematic diagram of a controller according to the present invention;

fig. 13 is another schematic structural diagram of the controller according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. The invention belongs to the protection scope based on the embodiment of the invention.

The invention provides a hybrid power coupling system, which is described first, please refer to fig. 1, fig. 1 is a schematic structural diagram of the hybrid power coupling system of the invention, the hybrid power coupling system includes an engine 1, a first clutch 2, an input shaft 3, a planetary gear mechanism, wherein the planetary gear mechanism includes a sun gear 4, a planet carrier 5, and a ring gear 6, the hybrid power coupling system further includes a brake 7, a second clutch 8, a first gear 9, a second gear 10, a generator 11, an intermediate shaft 12, a third gear 13, a fourth gear 14, a fifth gear 15, a driving motor 16, a sixth gear 17, and a differential mechanism 18. The relationship among the components of the hybrid coupling system is as follows:

the brake 7 is for braking the sun gear 4.

The first clutch 2 switches between the pure electric mode and the hybrid mode in order to control whether or not the power of the engine 1 is output.

The second clutch 8 and the brake 7 function to realize two gears of the engine 1 in conjunction with the planetary gear mechanism.

When the brake 7 is combined, the sun gear 4 is braked, and the power of the engine 1 is transmitted to the planet carrier 5 through the gear ring 6, then transmitted to the third gear 13 through the planet carrier 5, the third gear 13 transmits power to the intermediate shaft 12, the intermediate shaft 12 transmits power to the sixth gear 17 through the fourth gear 14, and finally the sixth gear 17 transmits power to the differential 18 and the wheel end, namely the first gear of the engine.

When the second clutch 8 is combined, the sun gear 4 and the ring gear 6 of the planetary gear mechanism are connected together, the sun gear 4, the planet carrier 5 and the ring gear 6 of the planetary gear mechanism integrally rotate and are fixedly connected into a whole, then power is transmitted to the third gear 13 through the planet carrier 5, the power is transmitted to the intermediate shaft 12 through the third gear 13, the power is transmitted to the sixth gear 17 through the fourth gear 14 by the intermediate shaft 12, and finally the power is transmitted to the differential 18 and the wheel end through the sixth gear, namely the second gear of the engine at this time.

The drive motor 16 transmits power to the third gear 13 through the fifth gear 15, to the intermediate shaft 12 through the third gear 13, to the sixth gear 17 through the fourth gear 14, and finally to the differential 18 and the wheel end through the sixth gear 17.

It is to be understood that the relationship among the components of the hybrid coupling system is described above, and the hybrid coupling system can have a plurality of different operation modes according to different use conditions by comprehensively controlling the components of the engine 1, the generator 11, the driving motor 16, the first clutch 2, the second clutch 8, the brake 7 and the like of the hybrid coupling system.

The working modes of the hybrid power coupling system include an engine direct-drive 1-gear mode, an engine direct-drive 2-gear mode, a hybrid drive 1-mode, a hybrid drive 2-mode, a dual-motor drive 1-mode, a dual-motor drive 2-mode, a single-motor pure electric mode, a series range extending mode and a parking power generation mode.

When the hybrid power coupling system works in the engine direct-drive 1-gear mode, the engine 1 drives, the generator 11 does not work, the driving motor 16 does not work, the first clutch 2 is combined, the second clutch 8 is separated, the brake 7 brakes, and the vehicle speed is at a medium-low vehicle speed.

When the hybrid power coupling system works in an engine direct-drive 2-gear mode, the engine 1 drives, the generator 11 does not work, the driving motor 16 does not work, the first clutch 2 is combined, the second clutch 8 is combined, the brake 7 is separated, and the vehicle speed is at a medium and high vehicle speed.

When the hybrid coupling system works in the hybrid driving 1 mode, as shown in fig. 2, the engine 1 is driven, the generator 11 is driven, the driving motor 16 is driven, the first clutch 2 is connected, the second clutch 8 is disconnected, the brake 7 is braked, and the vehicle speed is at a medium-low vehicle speed. In fig. 2, the broken-line arrows indicate the power transmission direction, the engaged state when the first clutch 2 and the second clutch 8 are hatched, the braking state when the brake 7 is hatched, and the arrows indicate the power transmission direction.

When the hybrid coupling system is operated in the hybrid drive 2 mode, as shown in fig. 3, the engine 1 drive, the generator 11 drive, the drive motor 16 drive, the first clutch 2 engagement, the second clutch 8 engagement, the brake 7 disengagement, and the vehicle speed are at medium and high vehicle speeds.

When the hybrid power coupling system works in the dual-motor drive 1 mode, as shown in fig. 4, the engine 1 does not work, the generator 11 is driven, the driving motor 16 is driven, the first clutch 2 is disengaged, the second clutch 8 is disengaged, the brake 7 is braked, and the vehicle speed is at a medium-low vehicle speed.

When the hybrid coupling system works in the dual-motor drive 2 mode, as shown in fig. 5, the engine 1 does not work, the generator 11 is driven, the driving motor 16 is driven, the first clutch 2 is disengaged, the second clutch 8 is engaged, the brake 7 is disengaged, and the vehicle speed is at a medium and high vehicle speed.

When the hybrid power coupling system works in a single-motor pure electric mode, as shown in fig. 6, the engine 1 does not work, the generator 11 does not work, the driving motor 16 drives, the first clutch 2 is disengaged, the second clutch 8 is disengaged, the brake 7 is disengaged, and the vehicle speed is at the full vehicle speed.

When the hybrid coupling system operates in the series range extending mode, as shown in fig. 7, the engine 1 generates power, the generator 11 generates power and starts the engine 1, the driving motor 16 drives, the first clutch 2 is connected, the second clutch 8 is disconnected, the brake 7 is disconnected, and the vehicle speed is at the full vehicle speed.

When the hybrid coupling system works in the parking power generation mode, as shown in fig. 8, the engine 1 generates power, the generator 11 generates power and starts the engine 1, the driving motor 16 does not work, the first clutch 2 does not work, the second clutch 8 does not work, the brake 7 does not work, and the vehicle speed is in a parking state.

It is obvious that according to different requirements, the hybrid coupling system can work in one of the above working modes, and it is noted that the medium-low vehicle speed, the medium-high vehicle speed and the full vehicle speed can be configured, specifically, the invention is not limited, wherein the medium-high vehicle speed is greater than the medium-low vehicle speed, the medium-high vehicle speed and the medium-low vehicle speed respectively correspond to different vehicle speed ranges, the full vehicle speed refers to that the vehicle speed runs at a certain fixed vehicle speed, and the vehicle speed is a parking state, which means that the vehicle speed is zero when in the parking power generation mode, and the engine generates power, the driving motor generates power and is used for starting the engine.

For reading and understanding, when the hybrid coupling system is in different operating modes, implementation conditions of corresponding execution components, execution elements and the like can be shown in the following table 1:

TABLE 1

In addition, it can be understood that the hybrid coupling system has different wheel end torques (Nm) in different operating modes when at different vehicle speeds (km/H), specifically, referring to fig. 9, the Dev1 is a dual-motor drive 1 mode, the Dev2 is a dual-motor drive 2 mode, the SEV is a single-motor electric-only and series range-extending mode, the H1 is a hybrid drive 1 mode, the H2 is a hybrid drive 2 mode, the ICE1 is an engine direct-drive 1-gear mode, and the ICE2 is an engine direct-drive 2-gear mode. It should be noted that fig. 9 is only an example.

The hybrid coupling system provided by the present invention is described above, and in the present invention, for the above hybrid coupling system, a controller of a vehicle having a hybrid coupling system is provided, the hybrid coupling system includes an engine (such as an engine) and a plurality of electric machines (driving electric machines, electric generators), the controller can control the engine and at least one electric machine of the hybrid coupling system to provide torques to operate in corresponding operation modes, and it is noted that in the vehicle applying the above hybrid coupling system, the embodiment of the present invention includes a plurality of different driving modes, the above driving modes include an electric mode (EV mode), an economy mode (ECO mode), a Normal mode (Normal mode) and a Sport mode (Sport mode), and have corresponding operation modes for the different driving modes, wherein, the drivability in different driving modes is different, the drivability includes power and economy, and different driving modes have different drivability heights in the same drivability type, for example, the drivability in different driving modes can be shown in the following table 2:

TABLE 2

It can be seen that the drivability differs in different driving modes, and that different driving modes have different drivability levels for the same drivability type. The power performance of the EV mode depends on the electric quantity of the power battery, and if the electric quantity of the power battery is higher than a certain value, the power performance of the EV mode may be higher than the driving modes such as the Sport mode, and will not be described in detail here.

In the embodiment of the invention, the work mode corresponding to the EV mode is the single-motor pure electric mode, the dual-motor drive 1 mode or the dual-motor drive 2 mode;

the working mode corresponding to the ECO mode is the single-motor pure electric mode, the hybrid drive 2 mode, the engine direct drive 2-gear mode or the series range extending mode;

the working mode corresponding to the Sport mode is the dual-motor drive 1 mode, the hybrid drive 1 mode or the series range extending mode;

the Normal mode corresponds to an operating mode that includes all operating modes of the hybrid coupling system.

The driving mode control method provided by the invention aims to effectively control the driving mode of the whole vehicle, so that the vehicle can respond to the requirement of a driver closely and work at an economical working point, and the following detailed description is provided.

Referring to fig. 10, an embodiment of the present invention provides a controller of a vehicle having a hybrid coupling system, where the hybrid coupling system includes an engine and a plurality of electric machines, the controller can control the engine and at least one electric machine of the hybrid coupling system to provide torques to operate in corresponding operation modes, and the controller is arranged to implement the following scheme:

s10: determining a driving style of a driver;

when a driver drives a vehicle equipped with the hybrid coupling system shown in fig. 1, the driver can select a desired driving style according to driving requirements, for example, a driving style selection button can be arranged on a central control and the like of the vehicle, and when the driver touches or clicks one of the buttons, a certain driving style can be correspondingly selected. For example, driving modes such as EV, ECO, Normal, Sport, and the like may be selected. For example, when the driver pays more attention to economy and fuel consumption is avoided, the driver may select the EV or ECO driving mode through the button, and when the driver selects the EV driving mode through the button, the vehicle controller may determine the driving mode selected by the driver.

S20: and determining whether the driving mode corresponding to the driving style needs to be subjected to admission condition determination, if so, executing step S30, and if not, executing step S40.

As described above, in the embodiment of the present invention, it is necessary to determine whether or not the determination of the admission condition is necessary for some driving modes, and therefore, when determining the driving style of the driver, it is necessary to determine whether or not the determination of the admission condition is necessary for the driving mode corresponding to the driving style, and if necessary, step S30 is executed, and if not necessary, step S40 is executed.

S30: and determining whether the vehicle currently meets the admittance condition of the driving mode, if so, executing step S40, and if not, executing step S50.

After determining that the admittance condition determination needs to be made to the driving pattern selected by the driver, it is further determined whether the vehicle currently satisfies the admittance condition of the driving pattern, and if so, step S40 is performed, and if not, step S50 is performed.

S40: and controlling the vehicle to enter the driving mode so as to enable the hybrid power coupling system to work in an operation mode corresponding to the driving mode.

And if the admittance condition of the driving mode is determined not to be required to be determined according to the mode type of the driving mode, controlling the vehicle to enter the driving mode so as to enable the hybrid power coupling system to work in a working mode corresponding to the driving mode. Or, if it is determined that the admission condition of the driving mode needs to be determined and the vehicle currently meets the admission condition of the driving mode, controlling the vehicle to enter the driving mode so that the hybrid coupling system works in the working mode corresponding to the driving mode, that is, if the admission condition of the driving mode is met, allowing the vehicle to enter the driving mode, and after the vehicle enters the driving mode, controlling the hybrid coupling system to select the corresponding working mode according to the mode control strategy in the driving mode to work. For example, when the driver selects the EV driving mode through the button and the EV driving mode satisfies the admission condition of the EV mode, the controller controls the vehicle to enter the EV driving mode, so that the hybrid coupling system can be controlled to select the corresponding operation mode to operate according to the EV mode control strategy in the EV mode.

S50: and controlling the vehicle to enter a switching driving mode corresponding to the driving mode so as to enable the hybrid power coupling system to work in a working mode corresponding to the switching driving mode.

If the fact that the vehicle does not meet the admittance condition of the driving mode currently is determined, the fact that the vehicle cannot enter the driving mode at the moment is indicated, and the vehicle is controlled to enter a switching driving mode corresponding to the driving mode at the moment so that the hybrid power coupling system works in a working mode corresponding to the switching driving mode. The different driving modes have different driving performance heights under the same driving performance type, and the switching driving mode is the driving mode with the smallest difference with the driving performance heights of the driving modes in all the driving modes of the vehicle. That is, if the access condition of the driving mode is not satisfied, the vehicle is not allowed to enter the driving mode, and the vehicle is directly switched to the switching driving mode corresponding to the driving mode.

It can be seen that in the embodiment of the invention, different driving style buttons are developed for drivers with different driving style requirements, and drivers with different types can manually select driving modes such as EV, ECO, Normal, Sport and the like according to the requirements of the drivers. Different working modes are set under different driving modes so as to meet the requirements of different driving styles, when the access condition of the driving mode is not met, the driving mode can be directly switched to a switching driving mode with the minimum difference with the driving mode selected by a driver, so that the response most fit with the requirements of the driver is realized, the vehicle can be effectively ensured to work on the mode fitting with the driving requirements of the driver, and the access condition and the switching-out condition of the driving mode can be judged, so that the driving mode of the vehicle can be controlled in real time, the power source of the vehicle can work at the required working point, and the driving control method can more fit the requirements of the driver, effectively control the working point of the power source and enable the vehicle to work at a better economic point.

In an embodiment, in step S20, the controller determines whether or not the driving mode needs to be subjected to admission condition determination according to the mode type of the driving mode, specifically:

s21: determining whether the mode type of the driving mode is a Normal mode, and if the driving mode is the Normal mode, executing step S22; if the driving mode is not the Normal mode, step S23 is executed.

S22: determining that no admission condition determination is required for the driving pattern.

S23: determining that an admission condition determination for the driving pattern is required.

The embodiment of the invention specifically explains the determination of the admission condition under which driving mode is required, and specifically determines that the admission condition determination of the driving mode is not required if the driver selects the Normal mode; if the driver selects a non-Normal mode, that is, if the driver selects a driving mode other than the Normal mode, it is determined that the admittance condition determination for the driving mode is required. For example, if the driver selects EV mode, Sport mode, ECO mode, the driver needs to determine the admission condition for the driving mode. It can be understood that, because the hybrid coupling system can work in any working mode in the Normal mode, and can be specifically adjusted to a certain working mode according to the actual vehicle condition and the driver demand, when the driver selects the Normal mode, the driver does not need to determine the admission condition of the driving mode, and has no special requirement on the driving performance, so that the driver can obtain the required driving style in the Normal mode, and the diversity of the driving style is improved.

In an embodiment, if the driving mode is the EV mode, a transition driving mode corresponding to the driving mode is the ECO mode;

if the driving mode is the ECO mode, the transfer driving mode corresponding to the driving mode is the Normal mode;

and if the driving mode is the Sport mode, the transfer driving mode corresponding to the driving mode is the Normal mode.

Therefore, in the embodiment, the corresponding transfer driving mode is specifically described when the driver selects a certain driving mode and the driving mode does not meet the admission condition, and when the admission condition of the driving mode is not met, the driver can directly transfer to the transfer driving mode with the smallest difference with the driving mode selected by the driver, so that the response most suitable for the requirement of the driver is realized. For example, if the driving mode selected by the driver is the EV mode, the ECO mode is directly switched to when the access condition of the EV mode is not satisfied, and it can be understood that since the driver selects the EV mode, it is seen that the driver has a higher economic requirement and a lower requirement for power performance, and therefore, when the driver selects the EV mode and does not satisfy the access condition of the EV mode at present, the ECO mode is selected to be switched to, so that the vehicle enters the ECO mode, that is, the ECO mode closest to the EV mode is selected, and the driver's selection can be responded to appropriately. For another example, if the driving mode selected by the driver is the ECO mode, the driver can directly shift to the Normal mode when the admission condition of the ECO mode is not satisfied, so that the driver can respond closely without consuming oil, and the vehicle operating economic point is improved.

The method comprises the following steps that corresponding admission conditions are provided for different driving modes, for example, an ECO mode is taken as an example, after a vehicle enters the ECO mode, if a fault of a part of a power system is detected, or the temperature of the part of the power system is detected to be higher than a preset temperature value, or the gradient of a running road surface of the current vehicle is detected to be higher than a preset gradient threshold value, or the electric quantity of a power battery is detected to be lower than a preset electric quantity threshold value, the admission conditions of the ECO mode are not met currently; otherwise, if the faults of the parts of the power system are not detected, the temperature of the parts of the power system is not detected to be higher than the preset temperature value, the gradient of the running road surface of the current vehicle is not detected to be higher than the preset gradient threshold value, and the electric quantity of the power battery is not detected to be lower than the preset electric quantity threshold value, the admission condition of the ECO mode is currently met. It should be noted that the admission conditions for the ECO mode are only exemplary and are not limited in the present invention, and in addition, for other driving modes, corresponding admission conditions are provided, and the present invention is not limited and is not described.

In an embodiment, after step S40, i.e. after the controller controls the vehicle to enter said driving mode, the controller is further arranged to:

s60: determining whether the vehicle currently meets the cut-out condition of the driving mode, and if so, executing step S70; if not, go to step S80.

S70: controlling the vehicle to switch out of the driving mode and enter the transfer driving mode;

s80: controlling the vehicle to continue to maintain the driving mode.

In the embodiment, after the controller controls the vehicle to enter the driving mode selected by the driver, whether the vehicle currently meets the switching-out condition of the driving mode is judged in real time, if so, the current driving mode is switched out and directly switched to the switching-over driving mode, and if not, the original driving mode is continuously kept. For example, after the vehicle is controlled to enter the EV mode, it is determined in real time whether the EV mode switching-out condition is currently satisfied, and if so, the EV mode is switched out and switched to the transfer driving mode corresponding to the EV mode, that is, the ECO mode, and if not, the EV mode is continuously maintained. For another example, after the vehicle is controlled to enter the ECO mode, it is determined in real time whether the switching-out condition of the ECO mode is currently satisfied, and if so, the ECO mode is switched out and the switching-over driving mode of the ECO mode, that is, the Normal mode, is switched in, and if not, the ECO mode is continuously maintained.

For example, if the driving mode is the EV mode, the EV mode switching-out condition includes: the electric quantity of the power battery is lower than a preset electric quantity threshold value; if the driving mode is an ECO mode, the switching-out condition of the ECO mode includes: the power demand increases; if the driving mode is the Sport mode, the switching-out condition of the Sport mode comprises: the target part temperature is above a preset temperature threshold. It should be noted that the admission conditions for the ECO mode are only exemplary, and the present invention is not limited thereto, and other driving modes may have corresponding cut-out conditions, and are not specifically limited and described herein.

For example, taking an ECO mode as an example, after a vehicle enters the ECO mode, if a fault of a component of a power system is detected, or a temperature of the component of the power system is detected to be higher than a preset temperature value, or a gradient of a traveling road surface of the current vehicle is detected to be higher than a preset gradient threshold value, or an electric quantity of a power battery is detected to be lower than a preset electric quantity threshold value, or heating demand indication information is received, or defrosting demand indication information is received, it is determined that a cut-out condition of the ECO mode is currently satisfied; otherwise, if the faults of the parts of the power system are not detected, the temperatures of the parts of the power system are not detected to be higher than the preset temperature value, the gradient of the running road surface of the current vehicle is not detected to be higher than the preset gradient threshold value, the electric quantity of the power battery is not detected to be lower than the preset electric quantity threshold value, the heating requirement indication information is not received, and the defrosting requirement indication information is not received, the current switching-out condition of the ECO mode is determined not to be met.

It is understood that, the above-mentioned embodiments of the present invention are described in detail, and for convenience of understanding, the following describes the above-mentioned process with reference to fig. 11 in a complete application scenario flow, as shown in fig. 11:

when the vehicle is started, the driving mode selected by the driver is judged:

1) if the driver selects the EV mode, the vehicle control unit firstly judges whether the access condition of the EV mode is met, if so, the vehicle control unit enters the EV mode, if not, the vehicle control unit selects to switch to the ECO mode, controls the vehicle to run according to the EV mode control strategy, and after entering the EV mode, if the access condition of the EV mode is met due to the reasons of low battery power and the like, the vehicle control unit switches to the ECO mode.

In the EV mode, a single-motor pure electric mode, a double-motor driving 1 mode or a double-motor driving 2 mode can be selected, and the controller can select a proper working mode in real time according to requirements of a driver such as an accelerator pedal requirement and the like by combining an EV mode control strategy.

2) If the driver selects the ECO mode, the controller firstly judges whether the admission condition of the ECO mode is met, if so, the controller enters the ECO mode and controls the vehicle to run according to the EV mode control strategy, and if not, the controller selects to switch to the Normal mode. After the ECO mode is entered, if the ECO mode cut-out condition is satisfied due to an increase in power demand or the like, the vehicle is controlled to shift to the Normal mode.

In the ECO mode, a single-motor pure electric mode, a hybrid drive 2 mode, an engine direct drive 2-gear mode and a series range extending mode can be selected, and the controller can select a proper working mode in real time according to requirements of a driver on an accelerator pedal and the like in conjunction with an ECO mode control strategy.

3) And if the driver selects the Normal mode, controlling the vehicle to directly run in the Normal mode.

Under the Normal mode, the controller comprehensively judges the requirements of a driver, the dynamic performance and the economy, considers all the working modes and controls the working modes of the vehicle in real time.

4) If the driver selects the sports mode, the controller can firstly judge whether the admittance condition of the sports mode is met, if so, the sports mode can be entered, and if the vehicle is not met, the controller can select to be entered into the Normal mode according to the sports mode control strategy. After entering the Sport mode, if the Sport mode cut-out condition is satisfied due to an excessive temperature of parts, the vehicle will shift to the Normal mode.

In the Soprt mode, the controller preferentially selects a working mode with good dynamic performance, such as a dual-motor drive 1 mode, a hybrid drive 1 mode or a series range extending mode.

It should be noted that the embodiment of the present invention also provides a control method for a vehicle having a hybrid coupling system, where the hybrid coupling system includes an engine and a plurality of electric machines, and the method can control the engine and at least one electric machine of the hybrid coupling system to provide torques to operate in corresponding operation modes, and the control method can correspondingly refer to the functions or execution steps of the controller arrangement described above, and will not be described repeatedly here.

In one embodiment, a method of controlling a vehicle having a hybrid coupling system including an engine and a plurality of electric machines, the method being capable of controlling the engine and at least one electric machine of the hybrid coupling system to provide torque to operate in respective operating modes, the method comprising:

determining a driving style of a driver;

It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention. The following describes a driving mode control apparatus provided in an embodiment of the present invention:

in one embodiment, a controller for a vehicle having a hybrid coupling system including an engine and a plurality of electric machines is provided, the controller being capable of controlling the engine and at least one electric machine of the hybrid coupling system to provide torque to operate in respective operating modes, the controller in the previous embodiments having a one-to-one correspondence. As shown in fig. 12, the controller 10 includes a first determination module 101, a second determination module 102, a third determination module 103, and a control module 104. The functional modules are explained in detail as follows:

a first determination module 101 for determining a driving style of a driver;

a second determining module 102, configured to determine whether an admission condition determination needs to be performed on a driving mode corresponding to the driving style;

a third determining module 103, configured to determine whether the vehicle currently meets the admission condition of the driving mode if the second determining module 102 determines that the admission condition determination of the driving mode is required;

a control module 104, configured to, if the third determining module 103 determines that the vehicle meets an admission condition of the driving mode, control the vehicle to enter the driving mode so that the hybrid coupling system operates in a working mode corresponding to the driving mode;

the control module 104 is further configured to, if the third determining module 103 determines that the vehicle does not meet the admission condition of the driving mode, control the vehicle to enter a transition driving mode corresponding to the driving mode so that the hybrid coupling system operates in a working mode corresponding to the transition driving mode;

the different driving modes have different driving performance heights under the same driving performance type, and the switching driving mode is the driving mode with the smallest difference with the driving performance heights of the driving modes in all the driving modes of the vehicle.

In an embodiment, the mode type of the driving mode includes a common mode, and the second determining module 102 is specifically configured to:

determining whether a mode type of the driving mode is a normal mode;

In one embodiment, the mode types of the driving mode further include a power mode, an economy mode, and a sport mode;

In an embodiment, the third determining module 103 is specifically configured to, after the control vehicle enters the driving mode, determine whether the vehicle currently meets a cut-out condition of the driving mode;

In an embodiment, if the driving mode is the sport mode, the switching-out condition of the driving mode includes: the electric quantity of the power battery is lower than a preset electric quantity threshold value;

For the specific definition of the controller, reference may be made to the above definition of the controller or the control method, which is not described herein again. The various modules in the controller described above may be implemented in whole or in part by software, hardware, and combinations thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.

In one embodiment, a controller is provided, which may be a vehicle controller on a vehicle, and its internal structure diagram may be as shown in fig. 13. The controller includes a processor, a memory connected by a system bus. Wherein the processor of the controller is configured to provide computational and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The computer program is executed by a processor to implement the steps of the control method provided by the embodiment of the invention.

In one embodiment, a computer-readable storage medium is provided, having a computer program stored thereon, which when executed by a processor, performs the steps of:

determining a driving mode selected by a driver;

determining whether the driving mode needs to be subjected to admission condition determination according to the mode type of the driving mode;

if the driving mode needs to be subjected to admission condition determination, determining whether the vehicle currently meets the admission condition of the driving mode;

It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.

Claims

1. A controller for a vehicle having a hybrid coupling system, the hybrid coupling system including an engine and a plurality of electric machines, the controller being operable to control the engine and at least one of the electric machines of the hybrid coupling system to provide torque to operate in respective operating modes, the controller being arranged to:

determining a driving style of a driver;

2. A controller as claimed in claim 1, in which the mode type of the driving mode comprises a normal mode, the controller being arranged to:

determining whether the driving mode is a normal mode;

3. The controller of claim 2, wherein the mode types of the driving mode further include a power mode, an economy mode, and a sport mode;

4. A controller as claimed in any one of claims 1 to 3, wherein after the controller controls the vehicle to enter the drive mode, the controller is further arranged to:

5. The controller of claim 4,

if the driving mode is the motion mode, the switching-out condition of the driving mode comprises: the electric quantity of the power battery is lower than a preset electric quantity threshold value;

6. The controller according to any one of claims 1-3, wherein the controller is capable of controlling the operation modes of the hybrid coupling system to include an engine direct-drive 1-gear mode, an engine direct-drive 2-gear mode, a hybrid drive 1-mode, a hybrid drive 2-mode, a dual-motor drive 1-mode, a dual-motor drive 2-mode, a single-motor electric-only mode, and a series range extending mode;

7. A method of controlling a vehicle having a hybrid coupling system including an engine and a plurality of electric machines, the method being operable to control the engine and at least one of the electric machines of the hybrid coupling system to provide torque to operate in respective operating modes, the method comprising:

determining a driving style of a driver;

8. A controller for a vehicle having a hybrid coupling system, the hybrid coupling system including an engine and a plurality of electric machines, the controller being capable of controlling the engine and at least one of the electric machines of the hybrid coupling system to provide torque to operate in respective operating modes, the controller comprising:

the device comprises a first determination module, a second determination module and a control module, wherein the first determination module is used for determining the driving style of a driver;

9. The controller of claim 8, wherein the mode type of the driving mode comprises a normal mode, the second determination module being specifically configured to:

determining whether a mode type of the driving mode is a normal mode;

10. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the steps of the control method according to claim 7.