阅读说明：本技术 具有混合动力耦合系统的车辆的控制器、控制方法和车辆 (Controller and control method of vehicle with hybrid power coupling system and vehicle ) 是由 赵江灵 朱永明 李瑶瑶 周文太 魏丹 苏建云 于 2020-05-22 设计创作，主要内容包括：本发明公开了一种具有混合动力耦合系统的车辆的控制器、控制方法和车辆,可以车辆在电动模式时工作在经济性较佳的工作点上。具有混合动力耦合系统的车辆的控制器,混合动力耦合系统包括引擎和多个电机,控制器能控制混合动力耦合系统的引擎和至少一个电机提供转矩以在相应的工作模式下工作,控制器被布置为：根据模式选择指令确定用户选择的驾驶模式的模式类型；若所述驾驶模式的模式类型为电动模式,则确定车辆当前是否满足所述电动模式的准入条件；若满足所述电动模式的准入条件,则控制所述车辆进入所述电动模式；在所述车辆进入所述电动模式后,根据车速需求和动力电池电量控制混合动力耦合系统以所述电动模式对应的工作模式工作。(The invention discloses a controller and a control method of a vehicle with a hybrid power coupling system and the vehicle, which can work at an economical working point when the vehicle is in an electric mode. A controller for a vehicle having a hybrid coupling system comprising 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 being arranged to: determining the mode type of the driving mode selected by the user according to the mode selection instruction; if the mode type of the driving mode is the electric mode, determining whether the vehicle meets the admission condition of the electric mode at present; if the admission condition of the electric mode is met, controlling the vehicle to enter the electric mode; and after the vehicle enters the electric mode, controlling the hybrid power coupling system to work in a working mode corresponding to the electric mode according to the vehicle speed requirement and the power battery power.)

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 the mode type of the driving mode selected by the user according to the mode selection instruction;

if the mode type of the driving mode is the electric mode, determining whether the vehicle meets the admission condition of the electric mode at present;

if the admission condition of the electric mode is met, controlling the vehicle to enter the electric mode;

and after the vehicle enters the electric mode, controlling the hybrid power coupling system to work in a working mode corresponding to the electric mode according to the vehicle speed requirement and the power battery power.

2. A controller as claimed in claim 1, wherein the motoring mode corresponds to an operating mode comprising a single motor motoring only mode, a dual motor drive 1 mode and a dual motor drive 2 mode, the controller being arranged to:

and controlling the hybrid power coupling system to work in the single-motor pure electric mode, the double-motor driving 1 mode or the double-motor driving 2 mode according to the vehicle speed requirement and the power battery power.

3. A controller as claimed in claim 2, arranged to:

if the electric quantity of the power battery is lower than a first preset electric quantity threshold value and the vehicle speed requirement is lower than a preset vehicle speed threshold value, controlling the hybrid power coupling system to work in a dual-motor drive 1 mode;

if the electric quantity of the power battery is lower than a first preset electric quantity threshold value and the vehicle speed requirement is higher than a preset vehicle speed threshold value, controlling the hybrid power coupling system to work in a dual-motor drive 2 mode;

if the power battery electric quantity is higher than a second preset electric quantity threshold value, controlling the hybrid power coupling system to work in the single-motor pure electric mode;

and the second preset electric quantity threshold value is greater than the first preset electric quantity threshold value.

4. A controller as claimed in any one of claims 1 to 3, wherein the controller is further arranged to:

determining whether the vehicle currently meets one of preset conditions;

if the vehicle currently meets one of the preset conditions, determining that the vehicle currently does not meet the admission condition of the electric mode;

and if the vehicle does not meet any one of the preset conditions currently, determining that the vehicle meets the admission condition of the electric mode currently.

5. A controller as claimed in claim 4, wherein after the controller controls the vehicle to enter the motoring mode, the controller is further arranged to:

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

if the vehicle currently meets the switching-out condition of the electric mode, controlling the vehicle to switch out the electric mode and enter an economic mode;

if the vehicle does not currently satisfy the cut-out condition of the electric mode, the vehicle maintains the electric mode.

6. A controller as claimed in claim 5, arranged to:

determining whether the vehicle currently meets one of preset conditions;

if the vehicle currently meets one of the preset conditions, determining that the vehicle currently meets the switching-out condition of the electric mode;

and if the vehicle does not meet any one of the preset conditions currently, determining that the vehicle does not meet the cut-out condition of the electric mode currently.

7. The controller of claim 6, wherein the preset condition determined by the controller whether the vehicle satisfies comprises:

the current vehicle speed is higher than the preset maximum vehicle speed in the electric mode;

the opening degree of the accelerator pedal is higher than a preset opening degree;

a failure of a component of the powertrain;

the temperature of the parts of the power system is higher than a first preset temperature value;

the temperature of the parts of the power system is lower than a second preset temperature value;

the gradient of the running road surface of the current vehicle is higher than a preset gradient threshold value;

the electric quantity of the power battery is lower than a third preset electric quantity threshold value;

receiving heating demand indication information;

and receiving defrosting demand indication information.

8. 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 the mode type of the driving mode selected by the user according to the mode selection instruction;

if the mode type of the driving mode is the electric mode, determining whether the vehicle meets the admission condition of the electric mode at present;

if the admission condition of the electric mode is met, controlling the vehicle to enter the electric mode;

and after the vehicle enters the electric mode, controlling the hybrid power coupling system to work in a working mode corresponding to the electric mode according to the vehicle speed requirement and the power battery power.

9. 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 first determining module is used for determining the mode type of the driving mode selected by the user according to the mode selection instruction;

the second determination module is used for determining whether the vehicle currently meets the admission condition of the electric mode if the mode type of the driving mode is the electric mode;

the control module is used for controlling the vehicle to enter the electric mode if the admission condition of the electric mode is met;

the control module is further used for controlling the hybrid power coupling system to work in a working mode corresponding to the electric mode according to the vehicle speed requirement and the power battery power after the vehicle enters the electric mode.

10. A vehicle comprising a hybrid coupling system and a controller as claimed in any one of claims 1 to 7, 9.

Technical Field

The invention relates to the technical field of vehicle control, in particular to a controller and a control method of a vehicle with a hybrid power coupling system and the vehicle.

Background

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, motivation may be more desirable; for some female drivers, economy, etc. may be relatively sought. Thus, many automotive companies have introduced driving style buttons that allow the driver to manually select different driving modes.

In the prior art, when the driving mode is the electric mode, the specific working mode in the electric mode is usually directly controlled by the speed of power response, for example, in the electric mode, if economic working is desired, the power demand response is adjusted to be slow, and if more power working is desired, the power demand response is faster.

Therefore, the control method in the prior art is simple, only starts with power response speed, the style is single, and in the electric mode, the function of weakening the power performance can be realized by controlling the response speed of the accelerator pedal, but the style adjusted only through the power response speed is not necessarily required by a user and is not fit with the driving style of a driver, the economy is related to the action point of a power source, and the state adjusted only through the power response speed is not necessarily the best state of the economy of the whole vehicle in the electric mode.

Disclosure of Invention

The invention provides a controller of a vehicle with a hybrid coupling system, a control method and the vehicle, which aim to solve the problem that the requirements of a driver and the economy cannot be effectively balanced in an electric mode in the prior art.

In a first aspect, a controller for a vehicle having a hybrid coupling system comprising 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 the mode type of the driving mode selected by the user according to the mode selection instruction;

if the mode type of the driving mode is the electric mode, determining whether the vehicle meets the admission condition of the electric mode at present;

if the admission condition of the electric mode is met, controlling the vehicle to enter the electric mode;

and after the vehicle enters the electric mode, controlling the hybrid power coupling system to work in a working mode corresponding to the electric mode according to the vehicle speed requirement and the power battery power.

Further, the operation modes corresponding to the motoring mode include a single-motor electric-only mode, a dual-motor drive 1 mode and a dual-motor drive 2 mode, and the controller is arranged to:

and controlling the hybrid power coupling system to be in the single-motor pure electric mode, the dual-motor driving 1 mode or the dual-motor driving 2 mode according to the vehicle speed requirement and the power battery power.

Further, the controller is arranged to:

if the electric quantity of the power battery is lower than a first preset electric quantity threshold value and the vehicle speed requirement is lower than a preset vehicle speed threshold value, controlling the hybrid power coupling system to work in a dual-motor drive 1 mode;

if the electric quantity of the power battery is lower than a first preset electric quantity threshold value and the vehicle speed requirement is higher than a preset vehicle speed threshold value, controlling the hybrid power coupling system to work in a dual-motor drive 2 mode;

if the power battery electric quantity is higher than a second preset electric quantity threshold value, controlling the hybrid power coupling system to work in the single-motor pure electric mode;

and the second preset electric quantity threshold value is greater than the first preset electric quantity threshold value.

Further, the controller is further arranged to:

determining whether the vehicle currently meets one of preset conditions;

if the vehicle currently meets one of the preset conditions, determining that the vehicle currently does not meet the admission condition of the electric mode;

and if the vehicle does not meet any one of the preset conditions currently, determining that the vehicle meets the admission condition of the electric mode currently.

Further, after the controller controls the vehicle to enter the motoring mode, the controller is further arranged to:

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

if the vehicle currently meets the switching-out condition of the electric mode, controlling the vehicle to switch out the electric mode and enter an economic mode;

if the vehicle does not currently satisfy the cut-out condition of the electric mode, the vehicle maintains the electric mode.

Further, the controller is further arranged to:

determining whether the vehicle currently meets one of preset conditions;

if the vehicle currently meets one of the preset conditions, determining that the vehicle currently meets the switching-out condition of the electric mode;

and if the vehicle does not meet any one of the preset conditions currently, determining that the vehicle does not meet the cut-out condition of the electric mode currently.

Further, the determining, by the controller, whether the preset condition is satisfied by the vehicle includes:

the current vehicle speed is higher than the preset maximum vehicle speed in the electric mode;

the opening degree of the accelerator pedal is higher than a preset opening degree;

a failure of a component of the powertrain;

the temperature of the parts of the power system is higher than a first preset temperature value;

the temperature of the parts of the power system is lower than a second preset temperature value;

the gradient of the running road surface of the current vehicle is higher than a preset gradient threshold value;

the electric quantity of the power battery is lower than a third preset electric quantity threshold value;

receiving heating demand indication information;

and receiving defrosting demand indication information.

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 the mode type of the driving mode selected by the user according to the mode selection instruction;

if the mode type of the driving mode is the electric mode, determining whether the vehicle meets the admission condition of the electric mode at present;

if the admission condition of the electric mode is met, controlling the vehicle to enter the electric mode;

and after the vehicle enters the electric mode, controlling the hybrid power coupling system to work in a working mode corresponding to the electric mode according to the vehicle speed requirement and the power battery power.

In a third aspect, a controller for a vehicle having a hybrid coupling system, the 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 controller comprising:

the first determining module is used for determining the mode type of the driving mode selected by the user according to the mode selection instruction;

the second determination module is used for determining whether the vehicle currently meets the admission condition of the electric mode if the mode type of the driving mode is the electric mode;

the control module is used for controlling the vehicle to enter the electric mode if the admission condition of the electric mode is met;

the control module is further used for controlling the hybrid power coupling system to work in a working mode corresponding to the electric mode according to the vehicle speed requirement and the power battery power after the vehicle enters the electric mode.

In a fourth aspect, a vehicle is provided having the aforementioned hybrid coupling system and controller.

In a fifth aspect, a computer-readable storage medium is provided, on which a computer program is stored, which, when being executed by a processor, realizes the steps of the aforementioned control method or the functions of the controller.

In the scheme of the controller and the control method of the vehicle with the hybrid coupling system, after the driving mode selected by the user is the electric mode, if the vehicle currently meets the admittance condition of the electric mode, the hybrid power coupling system enters the electric mode, and at the moment, the hybrid power coupling system can be controlled to work and switch in the working mode corresponding to the electric mode, specifically, the hybrid power coupling system is controlled to work in the working mode corresponding to the electric mode according to the vehicle speed requirement and the power of the power battery, the method can not damage the style requirement of a driver on electric driving, can relatively respond to the driving style requirement of the driver, can also enable the hybrid power coupling system to switch and work in a working mode corresponding to an electric mode according to the vehicle speed requirement and the electric quantity of the power battery, and can enable the vehicle to work at a working point with better economy when the vehicle is in the electric mode.

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 diagram illustrating the switching of the electric mode according to the present invention;

FIG. 11 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. 12 is a schematic diagram of a controller for a vehicle having a hybrid coupling system in accordance with the present invention;

fig. 13 is another schematic diagram of the controller of the vehicle having the hybrid coupling system of 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. 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 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 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. Note that the arrow in fig. 2 indicates the power transmission direction, and the first clutch 2 and the second clutch 8 indicate the engaged state when they are shaded, and the brake 7 indicates the braking state when they are shaded.

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 coupling system works in the single-motor electric-only 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 operates 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 operate, the first clutch 2 does not operate, the second clutch 8 does not operate, the brake 7 does not operate, and the vehicle speed is in a parking state.

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.

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 all be configured, and the invention is not limited specifically, where 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

It should be noted that, in a vehicle applying the hybrid coupling system, the vehicle includes a plurality of different driving modes, the 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 driving performances in the different driving modes are different, the driving performances include power and economy, and the different driving modes have different driving performance heights under the same driving performance type, for example, the driving performances in the 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 present invention, the operation modes corresponding to the EV mode are a single-motor electric-only mode, a dual-motor drive 1 mode and a dual-motor drive 2 mode, and in the EV mode, when the vehicle speed (km/h) is different, the vehicle has different wheel end torques (Nm), specifically, referring to fig. 9, DEV1 is the dual-motor drive 1 mode, DEV2 is the dual-motor drive 2 mode, and SEV is the single-motor electric-only mode and the series range extending mode, it can be seen that different operation modes have different characteristics, and the plurality of different operation modes can meet different requirements of a driver, so as to improve adaptability, and it should be noted that fig. 9 is only an example here.

The switching relationship between the respective operation modes in the EV mode is as shown in fig. 10, that is:

if the brake 7 is engaged, the mode is switched to the dual-motor drive 1 mode; if the second clutch 8 is engaged, the mode is switched to the two-motor drive 2 mode.

Assuming that the mode is the dual-motor drive 1 currently, if only the brake 7 is switched off, the mode is switched to the single-motor pure electric mode; if the brake 7 is released and the second clutch 8 is engaged, the mode is switched to the two-motor drive 2 mode.

Assuming that the two-motor drive 2 mode is currently adopted, the mode is switched to the one-motor electric only mode when the second clutch 8 is disengaged, and the mode is switched to the two-motor drive 1 mode when the first clutch 8 is disengaged and the brake 7 is engaged.

As shown in fig. 11, an embodiment of the present invention provides a controller of a vehicle with a hybrid coupling system, 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 work in corresponding working modes, the controller is arranged to implement the following scheme:

s10: and receiving a mode selection instruction which is input by a user and is used for selecting the type of the driving mode.

S20: and determining the mode type of the driving mode selected by the user according to the mode selection instruction.

When a driver drives a vehicle equipped with the hybrid coupling system shown in fig. 1, the driver may select a desired driving mode according to a driving requirement, for example, a driving mode selection button may be disposed on a central control position of the vehicle, and when the driver touches or clicks one of the buttons, a corresponding mode selection instruction may be generated, and correspondingly, the controller may receive the mode selection instruction, and may determine a mode type of the driving mode selected by the user according to the mode selection instruction. For example, the driver may select driving modes such as EV, ECO, Normal, Sport, and so on. For example, when the driver pays more attention to fuel saving and time consumption, the controller may determine that the driving mode selected by the user is the EV mode by clicking a button corresponding to the EV mode.

S30: if the mode type of the driving mode is the EV mode, determining whether the vehicle currently meets the admission condition of the EV mode, and if so, executing a step S40; if not, go to step S60.

It can be understood that, since the EV mode has a corresponding operation mode and different operation modes of the hybrid coupling system have different implementation conditions, in this embodiment, the operation mode of the hybrid coupling system corresponding to the EV mode also has implementation conditions, when the mode type of the driving mode selected by the user is the EV mode, it is necessary to determine whether the vehicle currently satisfies the admission condition of the EV mode, if the admission condition of the EV mode is satisfied, step S40 is executed, and if the admission condition of the EV mode is not satisfied, step S50 is executed.

S40: controlling the vehicle to enter the EV mode.

S50: and after the vehicle enters the EV mode, controlling the hybrid power coupling system to work in a working mode corresponding to the EV mode according to the vehicle speed requirement and the power battery power.

When the vehicle currently meets the access condition of the EV mode, the vehicle is controlled to enter the EV mode, and after the vehicle enters the EV mode, the hybrid coupling system can be controlled to work in the working mode corresponding to the EV mode according to the vehicle speed requirement and the power battery electric quantity, namely, in the EV mode, the hybrid coupling system can be switched between the working modes corresponding to the EV mode according to the vehicle speed requirement (realized by a driver through an accelerator pedal) and the actual power battery electric quantity.

S60: and controlling the vehicle to enter an ECO mode corresponding to the EV mode so as to enable the hybrid coupling system to work in an operation mode corresponding to the ECO mode.

It can be seen that, after the driving mode selected by the user is the EV mode, if the vehicle currently meets the access condition of the EV mode, the EV mode is entered, at this time, the hybrid coupling system may be controlled to operate and switch in the working mode corresponding to the EV mode, and specifically, the hybrid coupling system may be controlled to operate in the working mode corresponding to the EV mode according to the vehicle speed requirement and the power battery power amount, so that the driving style requirement of the driver for the economical driving may not be damaged, the driving style requirement of the driver may be responded to relatively closely, and the hybrid coupling system may be made to operate in the working mode corresponding to the EV mode according to the vehicle speed requirement and the power battery power amount, so that the vehicle may operate at a working point with better economy.

In addition, when the vehicle does not meet the admission condition of the EV mode currently, the vehicle is controlled to enter the ECO mode corresponding to the EV mode, so that the hybrid coupling system can operate in the operating mode corresponding to the ECO mode, that is, the hybrid coupling system can be switched in the operating mode in the ECO mode. As can be seen from table 2, different driving modes have different drivability levels under the same drivability type, and the ECO mode is the driving mode with the smallest difference between the drivability levels of the EV mode and all driving modes of the vehicle, so that the driving style requirement of the driver is not damaged.

The working modes corresponding to the electric mode comprise a single-motor pure electric mode, a double-motor driving 1 mode and a double-motor driving 2 mode, and the controller controls the hybrid power coupling system to work in the working mode corresponding to the electric mode according to the vehicle speed requirement and the power battery power, which means that: and controlling the hybrid power coupling system to be in the single-motor pure electric mode, the dual-motor driving 1 mode or the dual-motor driving 2 mode according to the vehicle speed requirement and the power battery power.

It is to be understood that a schematic diagram of switching between the single motor electric-only mode, the dual motor drive 1 mode, or the dual motor drive 2 mode is shown in fig. 10. According to the embodiment of the invention, related executing elements or components of the hybrid power coupling system can be controlled according to the vehicle speed requirement and the electric quantity of the power battery, so that the hybrid power coupling system can be switched between corresponding working modes in the EV mode, namely, the hybrid power coupling system can be switched between a single-motor pure electric mode, a double-motor driving 1 mode or a double-motor driving 2 mode.

In an embodiment, the controller controls the hybrid coupling system to operate in the single-motor pure electric mode, the dual-motor drive 1 mode or the dual-motor drive 2 mode according to the vehicle speed requirement and the power battery power, specifically:

if the electric quantity of the power battery is lower than a first preset electric quantity threshold value and the vehicle speed requirement is lower than a preset vehicle speed threshold value, controlling the hybrid power coupling system to work in a dual-motor drive 1 mode;

if the electric quantity of the power battery is lower than a first preset electric quantity threshold value and the vehicle speed requirement is higher than a preset vehicle speed threshold value, controlling the hybrid power coupling system to work in a dual-motor drive 2 mode;

if the power battery electric quantity is higher than a second preset electric quantity threshold value, controlling the hybrid power coupling system to work in the single-motor pure electric mode;

wherein the second preset electric quantity threshold value is greater than the first preset electric quantity threshold value

It can be seen that, in this embodiment, if in the EV mode, when the driver steps on the accelerator pedal, the controller may control the power source to control the hybrid coupling system to drive the vehicle to run with an optimal target of economy, at this time, the entire vehicle may run in the single-motor pure electric mode, the dual-motor drive 1 mode, or the dual-motor drive 2 mode, and since the single-motor pure electric mode, the dual-motor drive 1 mode, or the dual-motor drive 2 mode is the pure electric operation mode, the driving style requirement of the user for the electric mode is responded appropriately. More specifically, when the electric quantity of the power battery is lower than a first preset electric quantity threshold value and the vehicle speed requirement is higher than a preset vehicle speed threshold value, the hybrid coupling system is controlled to work in a double-motor driving 2 mode, the electric quantity of the power battery is lower than the first preset electric quantity threshold value, which indicates that the current residual quantity (SOC) of the power battery is possibly not enough for supporting driving, and the driver wants to drive at a higher vehicle speed, so that the driving requirement of the driver for the higher vehicle speed can be responded, the double motors are required to be adopted for driving at the moment, the hybrid coupling system is controlled to work in the double-motor driving 2 mode, and when the electric quantity of the power battery is lower than the first preset electric quantity threshold value and the vehicle speed requirement is not so high, the hybrid coupling system is controlled to work in the double-motor driving 1 mode. When the power battery electric quantity is higher than the second preset electric quantity threshold value, the power battery electric quantity is sufficient, and at the moment, the hybrid power coupling system is controlled to work in the single-motor pure electric mode, so that unnecessary power consumption is reduced.

The second preset electric quantity threshold is greater than the first preset electric quantity threshold, and is not limited specifically. It should be noted that, the specific numerical values of the first preset electric quantity threshold, the second preset electric quantity threshold, and the preset vehicle speed threshold are not limited in the embodiment of the present invention.

In an embodiment, the controller is further arranged to:

determining whether the vehicle currently meets one of preset conditions;

if the vehicle currently meets one of the preset conditions, determining that the vehicle currently does not meet the access condition of the EV mode;

and if the vehicle does not meet any one of the preset conditions currently, determining that the vehicle meets the admission condition of the EV mode currently.

Wherein, in one embodiment, the predetermined condition determined by the controller as to whether the vehicle satisfies includes:

a. faults of parts of the power system, such as faults of a driving motor, a motor controller and the like;

b. the temperature of the parts of the power system is higher than a first preset temperature value, for example, the temperature of a driving motor, an engine, a motor controller and the like is higher than a certain set value, and the power output of the vehicle is influenced by the overhigh temperature;

c. the temperature of the parts of the power system is lower than a second preset temperature value, for example, the temperature of a driving motor, an engine, a motor controller and the like is higher than a certain set value, and the power output of the vehicle is influenced by too low temperature;

d. the gradient of the running road surface of the current vehicle is higher than a preset gradient threshold value;

e. the electric quantity of the power battery is lower than a third preset electric quantity threshold value, the battery controller can feed back the SOC value of the power battery at any time, and the electric quantity of the power battery can be judged according to the SOC value. For example, the third preset charge threshold may be 30% of the total charge of the power battery, that is, the power battery is considered to be sufficient when the charge is higher than 30%, and is considered to be insufficient otherwise.

f. The opening degree of the accelerator pedal is higher than a preset opening degree, for example, the opening degree of the accelerator exceeds 50%, which indicates that the vehicle speed requirement is high, and the EV mode may not provide the high vehicle speed requirement, so that the admission condition of the EV mode is not satisfied;

g. the current vehicle speed is higher than the preset maximum vehicle speed in the EV mode, and the maximum vehicle speed in the EV mode is preset in the embodiment of the invention.

It can be seen that, in the embodiment of the present invention, specific EV mode admission conditions are provided, and when one of the preset conditions is satisfied, it is determined that the vehicle does not satisfy the EV mode admission conditions; the vehicle can meet the access condition of the EV mode if the vehicle does not meet any one of the preset conditions currently, the feasibility of the scheme is improved, in addition, the specific access condition of the EV mode is limited, the working mode of the hybrid power coupling system in the EV mode can be ensured to be normal after the hybrid power coupling system enters the EV mode, the driving requirement of a driver can be accurately responded, and the working stability and the adaptability of the vehicle are improved.

It should be noted that the preset conditions are exemplified herein, and in practical applications, the first preset condition may be limited by other conditions besides the a-g conditions, or the preset conditions include some of the a-d conditions, and the specific invention is not limited and may be configured according to practical situations. For example, whether the external temperature of the vehicle is higher than a preset temperature value can be detected, and it can be understood that the vehicle is provided with an ambient temperature sensor which can detect the ambient temperature. When the outside environment temperature is low and the air conditioner and the defrosting function are turned on again, and the rated capacity of the motor or the battery is exceeded, the condition that the entry condition of the EV mode is not met is indicated, and for example, heating requirement indication information or defrosting requirement indication information is received.

In an embodiment, after the controller controls the vehicle to enter the EV mode, the controller is further arranged to implement:

s70: determining whether the vehicle currently meets the cut-out condition of the EV mode, and if so, executing a step S80; if not, go to step S90.

S80: controlling the vehicle to switch out of the EV mode and enter the ECO mode.

S90: the EV mode is maintained.

In this embodiment, when entering the EV mode, the controller may determine whether a condition for maintaining the EV mode is currently satisfied, that is, may determine whether the vehicle currently satisfies a cut-out condition of the EV mode, and if it is determined that the vehicle currently satisfies the cut-out condition of the EV mode, cut out the EV mode and directly enter the ECO mode; and if the fact that the vehicle does not meet the cut-out condition of the EV mode currently is determined, the EV mode is kept. Therefore, after entering the EV mode, the scheme can continuously judge whether the vehicle is suitable for keeping the EV mode according to the vehicle condition, can switch between the EV mode and the ECO mode, and can ensure that the working economy of the vehicle is at a better working point while responding to the driving style requirement of a user.

In an embodiment, the controller determines whether the vehicle currently satisfies the EV mode cut-out condition, specifically:

determining whether the vehicle currently meets one of preset conditions;

if the vehicle currently meets one of the preset conditions, determining that the vehicle currently meets the switching-out condition of the EV mode;

and if the vehicle does not meet any one of the preset conditions currently, determining that the vehicle does not meet the cut-out condition of the EV mode currently.

In an embodiment, reference may be made to the foregoing description for the related description of the preset condition at this time, and the description is not repeated here.

In addition, in one embodiment, during travel in the EV mode, when the power battery charge drops to a certain value, for example, 15% of the power battery charge, without a malfunction, without a need to start the engine, the EV mode is automatically switched to the ECO mode. If the EV mode still needs to be entered, the EV mode key can be pressed for a long time until an EV indicator lamp on the instrument continuously flickers, the fact that the whole vehicle enters the EV mode is indicated, at the moment, the output power is limited to a certain extent, and the ECO mode is automatically switched again until the electric quantity of the power battery is reduced to another certain value, for example, the electric quantity of the power battery is 15%.

Therefore, in the embodiment, different working modes can be selected according to the requirements of the driver, the speed of power response is not simply adjusted, and the requirements of the driver can be better met.

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 the mode type of the driving mode selected by the user according to the mode selection instruction;

if the mode type of the driving mode is the electric mode, determining whether the vehicle meets the admission condition of the electric mode at present;

if the admission condition of the electric mode is met, controlling the vehicle to enter the electric mode;

and after the vehicle enters the electric mode, controlling the hybrid power coupling system to work in a working mode corresponding to the electric mode according to the vehicle speed requirement and the power battery power.

It should be noted that, the relevant steps of the control method of the vehicle with the hybrid coupling system may refer to the functions and implementation steps of the arrangement of the controller, and the description is not repeated here.

It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, the execution sequence of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention, and the control method may refer to the function or step implemented by the foregoing controller, and is not described repeatedly herein.

In one embodiment, a controller of a vehicle with a hybrid coupling system is provided, wherein the hybrid coupling system comprises 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 torque to operate in corresponding operation modes, and functions of the controller in the previous embodiment are in one-to-one correspondence. As shown in fig. 12, the controller 10 includes a first determination module 101, a second determination module 102, and a control module 103. The functional modules are explained in detail as follows:

a first determining module 101, configured to determine a mode type of the driving mode selected by the user according to the mode selection instruction;

a second determining module 102, configured to determine whether a vehicle currently meets an admission condition of an electric mode if a mode type of the driving mode is the electric mode;

the control module 103 is used for controlling the vehicle to enter the electric mode if the admission condition of the electric mode is met;

the control module 103 is further configured to control the hybrid coupling system to operate in a working mode corresponding to the electric mode according to a vehicle speed requirement and a power battery power after the vehicle enters the electric mode.

In one embodiment, when controlling the vehicle to enter the economy mode, the control module 103 is further configured to:

and controlling the hybrid power coupling system to work in the single-motor pure electric mode, the double-motor driving 1 mode or the double-motor driving 2 mode according to the vehicle speed requirement and the power battery power.

In an embodiment, the control module 103 is further specifically configured to:

if the electric quantity of the power battery is lower than a first preset electric quantity threshold value and the vehicle speed requirement is lower than a preset vehicle speed threshold value, controlling the hybrid power coupling system to work in a dual-motor drive 1 mode;

if the electric quantity of the power battery is lower than a first preset electric quantity threshold value and the vehicle speed requirement is higher than a preset vehicle speed threshold value, controlling the hybrid power coupling system to work in a dual-motor drive 2 mode;

if the power battery electric quantity is higher than a second preset electric quantity threshold value, controlling the hybrid power coupling system to work in the single-motor pure electric mode;

and the second preset electric quantity threshold value is greater than the first preset electric quantity threshold value.

In an embodiment, the second determining module 102 is specifically configured to:

determining whether the vehicle currently meets one of preset conditions;

if the vehicle currently meets one of the preset conditions, determining that the vehicle currently does not meet the admission condition of the electric mode;

and if the vehicle does not meet any one of the preset conditions currently, determining that the vehicle meets the admission condition of the electric mode currently.

In an embodiment, the second determining module 102 is further configured to:

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

the control module 103 is further configured to:

if the vehicle currently meets the switching-out condition of the electric mode, controlling the vehicle to switch out the electric mode and enter an economic mode;

if the vehicle does not currently satisfy the cut-out condition of the electric mode, the vehicle maintains the electric mode.

In an embodiment, the second determining module 102 is further specifically configured to:

determining whether the vehicle currently meets one of preset conditions;

if the vehicle currently meets one of the preset conditions, determining that the vehicle currently meets the switching-out condition of the electric mode;

and if the vehicle does not meet any one of the preset conditions currently, determining that the vehicle does not meet the cut-out condition of the electric mode currently.

The preset conditions include:

the current vehicle speed is higher than the preset maximum vehicle speed in the electric mode;

the opening degree of the accelerator pedal is higher than a preset opening degree;

a failure of a component of the powertrain;

the temperature of the parts of the power system is higher than a first preset temperature value;

the temperature of the parts of the power system is lower than a second preset temperature value;

the gradient of the running road surface of the current vehicle is higher than a preset gradient threshold value;

the electric quantity of the power battery is lower than a third preset electric quantity threshold value;

receiving heating demand indication information;

and receiving defrosting demand indication information.

For specific limitations of the controller, reference may be made to the above limitations of functions or steps that the controller is arranged to implement, and no further description is provided here. 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 controller, and can also be stored in a memory in the controller 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 realize the functions of the controller of the vehicle with the hybrid coupling system provided by the embodiment of the invention or the steps of the control method of the vehicle with the hybrid coupling system in the embodiment.

In one embodiment, a controller is provided, comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor implementing the following steps when executing the computer program:

determining the mode type of the driving mode selected by the user according to the mode selection instruction;

if the mode type of the driving mode is the electric mode, determining whether the vehicle meets the admission condition of the electric mode at present;

if the admission condition of the electric mode is met, controlling the vehicle to enter the electric mode;

and after the vehicle enters the electric mode, controlling the hybrid power coupling system to work in a working mode corresponding to the electric mode according to the vehicle speed requirement and the power battery power.

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 the mode type of the driving mode selected by the user according to the mode selection instruction;

if the mode type of the driving mode is the electric mode, determining whether the vehicle meets the admission condition of the electric mode at present;

if the admission condition of the electric mode is met, controlling the vehicle to enter the electric mode;

and after the vehicle enters the electric mode, controlling the hybrid power coupling system to work in a working mode corresponding to the electric mode according to the vehicle speed requirement and the power battery power.

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.