Controller and control method of vehicle with hybrid power coupling system and vehicle

文档序号：1898982 发布日期：2021-11-30 浏览：17次中文

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 ) 是由李瑶瑶赵江灵朱永明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,可以使车辆在普通模式时工作在经济性较佳的工作点上。混合动力耦合系统包括引擎和多个电机,控制器能控制所述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,所述控制器被布置为：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普通模式,则控制所述车辆进入所述普通模式；在所述车辆进入所述普通模式后,获取当前的车速需求和动力电池电量；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普通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 enable the vehicle to work at an economical working point in a common mode. A hybrid coupling system comprising an engine and a plurality of electric machines, a 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 a common mode, controlling the vehicle to enter the common mode; after the vehicle enters the common mode, acquiring the current vehicle speed demand and the power battery electric quantity; and controlling the hybrid power coupling system to work in a working mode corresponding to the common 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 a common mode, controlling the vehicle to enter the common mode;

after the vehicle enters the common mode, acquiring the current vehicle speed demand and the power battery electric quantity;

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

2. A controller as claimed in claim 1, arranged to:

and controlling the working modes corresponding to the common mode to be 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 or a series range extending mode.

3. The controller of claim 2, wherein the controller is arranged to control the hybrid coupling system to operate in the operating mode corresponding to the normal mode according to the vehicle speed requirement and the power battery power when the controller controls the hybrid coupling system to operate in the operating mode corresponding to the normal mode:

switching the working mode of the hybrid power coupling system according to the magnitude relation between the electric quantity of the power battery and a preset electric quantity threshold;

or the like, or, alternatively,

and switching the working mode of the hybrid power coupling system according to the magnitude relation between the electric quantity of the power battery and the preset electric quantity threshold value and the magnitude relation between the vehicle speed requirement and the preset vehicle speed threshold value.

4. A controller as claimed in claim 3, wherein when the controller switches the operation mode of the hybrid coupling system according to the magnitude relationship between the power battery charge and a preset charge threshold, the controller is arranged to:

determining a current proper working mode according to the magnitude relation between the electric quantity of the power battery and a preset electric quantity threshold;

and switching the original working mode of the hybrid power coupling system to the proper working mode.

5. A controller as claimed in claim 3, wherein when the controller switches the operation mode of the hybrid coupling system according to the magnitude relationship between the power battery power and the preset power threshold, and the magnitude relationship between the vehicle speed demand and the preset vehicle speed threshold, the controller is arranged to:

determining a current proper working mode according to the magnitude relation between the electric quantity of the power battery and the preset electric quantity threshold value and the magnitude relation between the vehicle speed requirement and the preset vehicle speed threshold value;

and switching the original working mode of the hybrid power coupling system to the proper working mode.

6. 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 a common mode, controlling the vehicle to enter the common mode;

after the vehicle enters the common mode, acquiring the current vehicle speed demand and the power battery electric quantity;

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

7. 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 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 comprising:

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

the control module is used for controlling the vehicle to enter a common mode if the determining module determines that the mode type of the driving mode is the common mode;

the acquisition module is used for acquiring the current vehicle speed demand and the electric quantity of the power battery after the control module controls the vehicle to enter the common mode;

the control module is further used for controlling the hybrid power coupling system to work in a working mode corresponding to the common mode according to the vehicle speed requirement and the power battery power quantity acquired by the acquisition module.

8. The controller of claim 7, wherein the control module is specifically configured to:

switching the working mode of the hybrid power coupling system according to the magnitude relation between the electric quantity of the power battery and a preset electric quantity threshold;

or the like, or, alternatively,

9. The controller of claim 8, wherein the control module is further specifically configured to:

determining a current proper working mode according to the magnitude relation between the electric quantity of the power battery and a preset electric quantity threshold;

and switching the original working mode of the hybrid power coupling system to the proper working mode.

10. A vehicle comprising a hybrid coupling system and a controller as claimed in any one of claims 1 to 5 and 7 to 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 normal mode, the specific working mode in the normal mode is usually controlled directly through the speed of power response, and thus, the control method in the prior art is simple, only starts with the speed of power response, and has a single style, and in the normal mode, the function of reducing the power performance can be realized by controlling the speed of accelerator pedal response, so as to adjust the power response in the normal mode, but the economy after only adjusting the speed of power response is not necessarily the best, the economy is related to the action point of a power source, and the state of only adjusting the speed of power response is not necessarily the best state of the economy of the whole vehicle, so that a normal mode driving control strategy which can work at the best economy point in the normal mode is urgently needed.

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 prior art cannot effectively work in a common mode and has better economical efficiency.

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 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 a common mode, controlling the vehicle to enter the common mode;

after the vehicle enters the motion mode, acquiring the current vehicle speed demand and the power battery electric quantity;

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

Further, the controller is arranged to:

Further, when the controller controls the hybrid power coupling system to work in the working mode corresponding to the common mode according to the vehicle speed requirement and the power battery power, the controller is arranged to:

switching the working mode of the hybrid power coupling system according to the magnitude relation between the electric quantity of the power battery and a preset electric quantity threshold;

or the like, or, alternatively,

Further, when the controller switches the operation mode of the hybrid power coupling system according to the magnitude relation between the electric quantity of the power battery and a preset electric quantity threshold value, the controller is arranged to:

determining a current proper working mode according to the magnitude relation between the electric quantity of the power battery and a preset electric quantity threshold;

and switching the original working mode of the hybrid power coupling system to the proper working mode.

Further, when the controller switches the operation mode of the hybrid coupling system according to the magnitude relation between the electric quantity of the power battery and the preset electric quantity threshold value and the magnitude relation between the vehicle speed requirement and the preset vehicle speed threshold value, the controller is arranged to:

and switching the original working mode of the hybrid power coupling system to the proper working mode.

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 a common mode, controlling the vehicle to enter the common mode;

after the vehicle enters the common mode, acquiring the current vehicle speed demand and the power battery electric quantity;

and controlling the hybrid power coupling system to work in a working mode corresponding to the common 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 determining module is used for determining the mode type of the driving mode selected by the user according to the mode selection instruction;

the control module is used for controlling the vehicle to enter a common mode if the determining module determines that the mode type of the driving mode is the common mode;

the acquisition module is used for acquiring the current vehicle speed demand and the electric quantity of the power battery after the control module controls the vehicle to enter the common mode;

Further, the control module is specifically configured to:

switching the working mode of the hybrid power coupling system according to the magnitude relation between the electric quantity of the power battery and a preset electric quantity threshold;

or the like, or, alternatively,

Further, the control module is further specifically configured to:

determining a current proper working mode according to the magnitude relation between the electric quantity of the power battery and a preset electric quantity threshold;

and switching the original working mode of the hybrid power coupling system to the proper working 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 implemented by the controller and the control method of the vehicle with the hybrid coupling system, after the driving mode selected by the user is the common mode, the vehicle is controlled to enter the common mode, at the moment, the hybrid coupling system can be controlled to work and switch in the working mode corresponding to the common mode, the hybrid coupling system is controlled to work in the working mode corresponding to the common mode according to the vehicle speed requirement and the power battery electric quantity, the driver style requirement for normal driving can not be damaged, the driver normal driving style requirement can be responded to more closely, the hybrid coupling system can be switched and work in the working mode corresponding to the common mode according to the vehicle speed requirement and the power battery electric quantity, and the vehicle can work at a working point with better economy when in the common 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 various operating modes corresponding to the normal mode of the present invention;

FIG. 10 is a schematic diagram illustrating the switching of the working modes in the normal mode of 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 configuration diagram of the controller of the vehicle having the hybrid coupling system in 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, and 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, and 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 is noted that in the vehicle applying the hybrid coupling system, the embodiment of the present invention includes a plurality of different driving modes, including an electric mode (EV mode), an economy mode (ECO mode), a Normal mode (Normal mode), and a Sport mode (Sport mode), and has corresponding operating 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 for the same driving performance type, for example, the driving performances in the different driving modes can be shown in table 2 below:

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 Normal mode, that is, the working mode corresponding to the Normal mode includes all working modes of the hybrid coupling system, for example, the working mode corresponding to the Normal mode includes 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, a series range extending mode, and a parking power generation mode.

In the Normal mode, when the vehicle is at different speeds (km/H), the vehicle has different wheel end torques (Nm), 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. It can be seen that different operation modes have different characteristics, and a plurality of different operation modes can meet different requirements of a driver to improve adaptability, and it should be noted that fig. 9 is only an example here.

In addition, the switching relationship between the corresponding operation modes in the Normal mode is shown in fig. 10, that is:

if the current hybrid driving 1 mode is assumed, if the first clutch 2 is disconnected, the dual-motor driving 1 mode is switched to; if the brake 7 is disconnected, the series range extending mode is switched to; if the brake 7 is released and the second clutch 8 is engaged, the mode is switched to the hybrid drive 2 mode.

If the current mode is the hybrid drive 2 mode, if the first clutch 2 is disconnected, the mode is switched to the dual-motor drive 2 mode; if the second clutch 8 is disconnected, the series range-extending mode is switched to; if the brake 7 is engaged and the second clutch 8 is disengaged, the mode is switched to the hybrid drive 1 mode.

Assuming that the current mode is the dual-motor drive 1 mode, if the first clutch 2 is engaged, switching to the hybrid drive 1 mode; if the brake 7 is disconnected, the mode is switched to a single-motor pure electric mode; if the first clutch 2 is engaged and the brake 7 is disengaged, switching to the series range extension 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 current mode is the dual-motor drive 2 mode, if the first clutch 2 is engaged, switching to the hybrid drive 2 mode; if the second clutch 8 is disconnected, switching to the single-motor pure electric mode; if the first clutch 2 is engaged and the second clutch 8 is disengaged, switching to the series range extension mode; if the brake 7 is engaged and the second clutch 8 is disengaged, the mode is switched to the two-motor drive 1 mode.

Assuming that the series range extending mode is currently adopted, if the brake 7 is engaged, the hybrid drive 1 mode is switched to; if the second clutch 8 is engaged, switching to the hybrid drive 2 mode; if the first clutch 2 is disconnected and the brake is engaged, switching to the dual-motor drive 1 mode; if the first clutch 2 is disengaged and the second clutch 8 is engaged, the mode is switched to the two-motor drive 2 mode.

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.

It can be seen that, by controlling the relevant actuators/components of the hybrid coupling system, the hybrid coupling system can be switched among different operating modes, and specifically, the embodiment of the present invention provides a specific switching control strategy for a driving mode being a normal mode, and the following is described in detail:

as shown in fig. 11, the present embodiment provides a controller of a vehicle having 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 operate in corresponding operation 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 clicks the Normal mode button, the controller may determine that the driving mode selected by the user is the Normal mode.

S30: and if the mode type of the driving mode is a Normal mode, controlling the vehicle to enter the Normal mode.

It will be appreciated that since the Normal mode has a corresponding operating mode and different operating modes of the hybrid coupling system have different enablement conditions, in this embodiment, the operating mode of the hybrid coupling system corresponding to the Normal mode also has enablement conditions, and therefore, the vehicle may be controlled to enter the Normal mode when the mode type of the driving mode selected by the user is the Normal mode.

S40: after the vehicle enters the Normal mode, acquiring the current vehicle speed demand and the electric quantity of a power battery;

s50: and controlling the hybrid power coupling system to work in a working mode corresponding to the Normal mode according to the vehicle speed requirement and the power battery power.

After the vehicle enters the Normal mode, the hybrid coupling system can be controlled to work in the working mode corresponding to the Normal mode according to the vehicle speed requirement and the power battery electric quantity, that is, in the Normal mode, the hybrid coupling system can be switched between the working modes corresponding to the Normal mode according to the vehicle speed requirement (realized by a driver through an accelerator pedal) and the actual power battery electric quantity.

Therefore, when the driving mode selected by the user is the Normal mode, the hybrid coupling system can be controlled to work and switch in the working mode corresponding to the Normal mode, the hybrid coupling system is controlled to work in the working mode corresponding to the Normal mode according to the vehicle speed requirement and the power battery power quantity, the Normal driving style requirement of the driver can be responded to relatively closely without damaging the style requirement of the driver for Normal driving, the hybrid coupling system can work in the working mode corresponding to the Normal mode according to the vehicle speed requirement and the power battery power quantity, and the vehicle can work at a working point with better economy when in the Normal mode.

In an embodiment, the working modes corresponding to the Normal mode 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. That is to say, after the vehicle enters the Normal mode, the hybrid coupling system can be controlled to work in the engine direct-drive 1-gear mode, the engine direct-drive 2-gear mode, the hybrid drive 1-mode, the hybrid drive 2-mode, the dual-motor drive 1-mode, the dual-motor drive 2-mode, the single-motor pure electric mode or the series range-extending mode, and the switching between the above working modes can be determined according to the electric quantity of the power battery and the vehicle speed requirement.

In one embodiment, the controller controls the hybrid coupling system to operate in an operation mode corresponding to the Normal mode according to the vehicle speed requirement and the power battery power, and is mainly arranged in the following two modes, which are respectively described as follows:

in a first mode, the controller is arranged to switch the operation mode of the hybrid coupling system according to the magnitude relation between the power of the power battery and a preset power threshold. That is, in the first mode, the operation mode of the hybrid coupling system is switched directly according to the magnitude relationship between the power of the power battery and the preset power threshold, and specifically, the controller is arranged to determine a currently suitable operation mode according to the magnitude relationship between the power of the power battery and the preset power threshold, and switch the original operation mode of the hybrid coupling system to the suitable operation mode. In this embodiment, there may be a plurality of preset electric quantity thresholds to switch the working mode of the hybrid power coupling system in combination with the electric quantity of the power battery.

Therefore, in the embodiment, a mode of switching the working mode of the hybrid power coupling system according to the magnitude relation between the electric quantity of the power battery and the preset electric quantity threshold is specifically provided, the implementability of the scheme is improved, the electric quantity of the power battery is considered, the hybrid power coupling system is effectively ensured to work in a reasonable working mode, and the dynamic property and the economical efficiency of the vehicle can be ensured.

In a second mode, the controller is arranged to switch the operation mode of the hybrid coupling system according to the magnitude relation between the electric quantity of the power battery and the preset electric quantity threshold value and the magnitude relation between the vehicle speed requirement and the preset vehicle speed threshold value. That is, in the second mode, the operation mode of the hybrid coupling system is switched according to the magnitude relation between the electric quantity of the power battery and the preset electric quantity threshold value and also according to the magnitude relation between the vehicle speed requirement and the preset vehicle speed threshold value, specifically, the controller is arranged to determine the currently suitable operation mode according to the magnitude relation between the electric quantity of the power battery and the preset electric quantity threshold value and the magnitude relation between the vehicle speed requirement and the preset vehicle speed threshold value; and switching the original working mode of the hybrid power coupling system to the proper working mode. Wherein the preset vehicle speed threshold is a preset value.

Therefore, in the embodiment, the working mode of the hybrid power coupling system is specifically switched according to the electric quantity of the power battery and the vehicle speed requirement, the implementability of the scheme is improved, the electric quantity of the power battery and the vehicle speed requirement are comprehensively considered, the hybrid power coupling system is effectively ensured to work in a reasonable working mode, and the power performance and the economical efficiency of the vehicle can be ensured.

It can be understood that the switching between the operation modes in Normal mode is schematically 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 electric quantity of the power battery, or the vehicle speed requirement and the electric quantity of the power battery, so that the hybrid power coupling system can be switched among corresponding working modes when the driving mode is the Normal mode, namely, the hybrid power coupling system can be switched among 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 double-motor drive 1-mode, a double-motor drive 2-mode, a single-motor pure electric mode and a series range-extended mode.

In an embodiment, before the controller controls the vehicle to enter the Normal mode, the controller is further arranged to determine whether an admission condition for the Normal mode is currently met, in particular arranged to implement:

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 a Normal 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 Normal mode currently.

In one embodiment, the controller determines whether the preset condition is met by the vehicle, and the preset condition comprises the following steps:

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

b. the temperature of a generator or a driving motor of the vehicle is higher than a preset temperature value, and the power output of the vehicle and the dynamic property are influenced due to overhigh temperature;

it can be seen that in the embodiment of the present invention, specific admission conditions of the Normal mode are provided, and when one of the preset conditions is met, it is determined that the vehicle does not meet the admission conditions of the Normal mode; in addition, the specific admission condition of the Normal mode is defined, so that the hybrid power coupling system can be enabled to normally work in the working mode of the Normal mode after entering the Normal mode, the power driving requirement of a driver can be accurately responded, and the vehicle power performance and adaptability are improved.

It should be noted that the preset conditions are described as examples, in practical applications, the preset conditions may also be limited by other conditions besides the a and b conditions, or the preset conditions include some of the a and b conditions, and the specific invention is not limited, and may be configured according to practical situations. For example, other conditions that may cause the vehicle to fail to operate in the Normal mode may also be present, such as over-temperature of the power battery, failure of the vehicle high voltage system, failure of the clutch to engage or disengage, stuck solenoid valve, etc., which also indicate that the Normal mode admittance condition is not satisfied.

In one embodiment, when the vehicle brakes, the driving motor generates braking torque to brake the wheels, and induced current generated in a motor winding of the driving motor charges the power battery, so that the recovery of braking energy is realized. Whereby the controller is further arranged to: when braking, the driving motor is controlled to generate braking torque and induction current is generated in the winding to charge the battery, and the driving motor can be effectively used for acting on the power battery.

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 a common mode, controlling the vehicle to enter the common mode;

after the vehicle enters the common mode, acquiring the current vehicle speed demand and the power battery electric quantity;

and controlling the hybrid power coupling system to work in a working mode corresponding to the common 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, 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.

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 of the electric machines of the hybrid coupling system to provide torque to operate in respective operating modes, the controller having a one-to-one correspondence in functionality with the controller of the previous embodiment. As shown in fig. 12, the controller 10 includes a determination module 101, a control module 102, and an acquisition module 103. The functional modules are explained in detail as follows:

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

the control module is used for controlling the vehicle to enter a common mode if the determining module determines that the mode type of the driving mode is the common mode;

the acquisition module is used for acquiring the current vehicle speed demand and the electric quantity of the power battery after the control module controls the vehicle to enter the common mode;

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

switching the working mode of the hybrid power coupling system according to the magnitude relation between the electric quantity of the power battery and a preset electric quantity threshold;

or the like, or, alternatively,

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

determining a current proper working mode according to the magnitude relation between the electric quantity of the power battery and a preset electric quantity threshold;

and switching the original working mode of the hybrid power coupling system to the proper working mode.

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

and switching the original working mode of the hybrid power coupling system to the proper working mode.

For the functions of the controller, reference may be made to the definitions of the controller above, which are not described in detail 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 controller 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 provided by 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 a common mode, controlling the vehicle to enter the common mode;

after the vehicle enters the common mode, acquiring the current vehicle speed demand and the power battery electric quantity;

and controlling the hybrid power coupling system to work in a working mode corresponding to the common 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 a common mode, controlling the vehicle to enter the common mode;

after the vehicle enters the common mode, acquiring the current vehicle speed demand and the power battery electric quantity;

and controlling the hybrid power coupling system to work in a working mode corresponding to the common 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.

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