CN113715802A

CN113715802A - Controller and control method of vehicle with hybrid power coupling system and vehicle

Info

Publication number: CN113715802A
Application number: CN202010441360.0A
Authority: CN
Inventors: 朱永明; 赵江灵; 周文太; 李瑶瑶; 魏丹; 苏建云
Original assignee: Guangzhou Automobile Group Co Ltd
Current assignee: Guangzhou Automobile Group Co Ltd
Priority date: 2020-05-22
Filing date: 2020-05-22
Publication date: 2021-11-30
Anticipated expiration: 2040-05-22
Also published as: CN113715802B

Abstract

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. The hybrid coupling system comprises 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 economic mode, determining whether the vehicle meets the admission condition of the economic mode at present; if the admission condition of the economic mode is met, controlling the vehicle to enter the economic mode; and after the vehicle enters the economic mode, controlling the hybrid power coupling system to work in a working mode corresponding to the economic mode according to the vehicle speed requirement and the power battery power.

Description

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

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 economy mode, the specific working mode in the economy mode is usually directly controlled by the speed of the power response, for example, in the economy mode, if the economical working mode is desired, the power demand response is adjusted to be slow, and if the economical working mode 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 economic 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 matched 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 economic mode, so that an economic mode driving control strategy which can be matched with the requirements of the driver and works at the best economic point in the economic 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 requirements of a driver and the economy cannot be balanced in an economy mode in the prior art.

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

determining 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 an economic mode, determining whether a vehicle currently meets the admission condition of the economic mode;

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

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

Further, the operating modes corresponding to the economy mode include a single-motor electric-only mode, a hybrid-drive 2 mode, an engine direct-drive 2-gear mode and a series range extending mode, and the controller is arranged to:

and controlling the hybrid power coupling system to work in the single-motor pure electric mode, the hybrid drive 2 mode, the engine direct drive 2-gear mode or the series range extending 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, controlling an engine of the hybrid power coupling system to be started all the time so that the hybrid power coupling system works in a hybrid drive 2 mode, an engine direct drive 2-gear mode or a series range extending mode;

if the power battery power is higher than a second preset power threshold and the vehicle speed requirement is lower than a preset vehicle speed, controlling an engine of the hybrid power coupling system not to be started so that the hybrid power coupling system works 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 arranged to:

determining whether the vehicle currently meets one of first preset conditions;

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

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

Further, the first preset condition determined by the controller as to whether the vehicle satisfies includes:

a failure of a component of the powertrain;

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

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

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

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

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

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

if the vehicle does not currently meet the cut-out condition for the economy mode, the vehicle remains in the economy mode.

Further, the controller is arranged to:

determining whether the vehicle currently meets one of second preset conditions;

if the vehicle currently meets one of the second preset conditions, determining that the vehicle currently meets the cut-out condition of the economic mode;

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

Further, the second preset condition that is determined by the controller whether the vehicle satisfies includes:

a failure of a component of the powertrain;

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:

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

the 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 economy mode if the first determination module determines that the mode type of the driving mode is the economy mode;

the control module is used for controlling the vehicle to enter the economy mode if the second determination module determines that the vehicle meets the admission condition of the economy mode;

and the control module is also used for controlling the hybrid power coupling system to work in a working mode corresponding to the economic mode according to the vehicle speed requirement and the power battery power after the vehicle enters the economic 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 economy mode, if the vehicle currently meets the admission condition of the economy mode, the vehicle enters the economy mode, at the moment, the hybrid coupling system is controlled to work and switch in the working mode corresponding to the economy mode, and the hybrid coupling system is controlled to work in the working mode corresponding to the economy mode specifically according to the vehicle speed requirement and the power battery electric quantity. The method can not damage the style requirement of the driver on economic driving, can relatively respond to the driving style requirement of the driver, can also enable the hybrid power coupling system to work in a working mode corresponding to an economic 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 economic efficiency.

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 ECO 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 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 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. In fig. 2, the broken-line arrows indicate the power transmission direction, the engaged state when the first clutch 2 and the second clutch 8 are hatched, the braking state when the brake 7 is hatched, and the arrows indicate the power transmission direction.

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

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

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

When the hybrid 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

In addition, it can be understood that the hybrid coupling system has different wheel end torques (Nm) in different operation modes when at different vehicle speeds (km/H), specifically, referring to fig. 9, the Dev1 is a dual-motor drive 1 mode, the Dev2 is a dual-motor drive 2 mode, the SEV is a single-motor electric-only and series range-extending mode, the H1 is a hybrid drive 1 mode, the H2 is a hybrid drive 2 mode, the ICE1 is an engine direct-drive 1-gear mode, and the ICE2 is an engine direct-drive 2-gear mode, so it can be seen that different operation modes have different characteristics, and the various operation modes can be adapted to different styles of drivers to improve adaptability, and it should be noted that fig. 9 is only illustrated here as an example.

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 operating modes corresponding to the ECO mode are the single-motor electric-only mode, the hybrid drive 2 mode, the engine direct-drive 2-gear mode, or the series range extending mode, and in the ECO mode, the switching relationship between the corresponding operating modes is as shown in fig. 10, that is:

assuming that the single-motor electric-only mode is adopted currently, if the first clutch 2 is engaged, the mode is switched to the series city increasing mode; if the first clutch 2 is engaged and the second clutch 8 is engaged, a shift is made to the hybrid drive 2 mode or the engine direct drive 2-speed mode.

If the second clutch 8 is engaged, the hybrid drive 2 mode or the engine direct drive 2-gear mode is switched to; if the first clutch 2 is disengaged, the mode is switched to the single-motor electric-only mode.

Assuming the current hybrid drive 2 mode or the engine direct drive 2-speed mode, the mode is switched to the single-motor electric-only mode if the first clutch 2 is disengaged and the second clutch 8 is disengaged, and the mode is switched to the series-augmented mode if only the second clutch 8 is disengaged.

It should be noted that the corresponding operation mode in the Normal mode may be any one of all operation modes of the hybrid coupling system, and there are corresponding operation modes for other driving modes, which are not described herein specifically. In addition, the working modes corresponding to the driving modes such as the Normal mode can also be switched according to the states of the actuators or components of the hybrid coupling system, and specific descriptions are omitted here, and the corresponding switching situation can be obtained by referring to table 1.

As shown in fig. 11, in the embodiment, a controller of a vehicle with a hybrid coupling system is provided, 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, and 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 attention to economy, the driver may determine that the driving mode selected by the user is the ECO mode through the button corresponding to the ECO mode.

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

It is understood that, since the ECO 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 ECO mode also has implementation conditions, when the mode type of the driving mode selected by the user is the ECO mode, it is determined whether the vehicle currently satisfies the admission condition of the ECO mode, if the admission condition of the ECO mode is satisfied, step S40 is executed, and if the admission condition of the ECO mode is not satisfied, step S50 is executed.

S40: controlling the vehicle to enter the ECO mode.

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

When the vehicle currently meets the admission condition of the ECO mode, the vehicle is controlled to enter the ECO mode, and after the vehicle enters the ECO mode, the hybrid power coupling system can be controlled to work in the working mode corresponding to the economic mode according to the vehicle speed requirement and the power battery electric quantity, namely, in the ECO mode, the hybrid power coupling system can be switched between the working modes corresponding to the ECO 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 a Normal mode corresponding to the ECO mode so as to enable the hybrid coupling system to work in an operating mode corresponding to the Normal.

Therefore, after the driving mode selected by the user is the ECO mode, if the vehicle currently meets the admission condition of the ECO mode, the vehicle enters the ECO mode, and at this time, the hybrid coupling system can be controlled to work and switch in a working mode corresponding to the ECO mode, and specifically, the hybrid coupling system is controlled to work in the working mode corresponding to the ECO mode according to the vehicle speed requirement and the power battery electric quantity. The method can not damage the style requirement of the driver on economic driving, can relatively respond to the driving style requirement of the driver, can also enable the hybrid power coupling system to work in a working mode corresponding to an ECO 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 economical efficiency.

In addition, when the vehicle does not meet the admission condition of the ECO mode currently, the vehicle is controlled to enter a Normal mode corresponding to the ECO mode, so that the hybrid coupling system can work in an operation mode corresponding to the Normal mode, that is, the hybrid coupling system can be switched among all the operation modes. As can be seen from table 2, different driving modes have different driving performance heights under the same driving performance type, and the Normal mode is the driving mode with the smallest difference from the driving performance height of the ECO mode in all the driving modes of the vehicle, so that the driving style requirement of the driver can not be damaged.

In step S50, the controller controls the hybrid coupling system to operate in the operating mode corresponding to the economy mode according to the vehicle speed requirement and the power of the power battery, specifically: and controlling the hybrid power coupling system to work in the single-motor pure electric mode, the hybrid drive 2 mode, the engine direct drive 2-gear mode or the series range extending mode according to the vehicle speed requirement and the power battery power.

It can be understood that the hybrid drive type hybrid electric vehicle can be switched among the single-motor pure electric mode, the hybrid drive 2 mode, the engine direct drive 2-gear mode or the series range extending mode, and the switching schematic diagram 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 works in a corresponding working mode in an ECO mode.

In one embodiment, the controller controls the hybrid coupling system to operate in the single-motor pure electric mode, the hybrid drive 2 mode, the engine direct-drive 2-gear mode or the series range-extending mode according to a vehicle speed requirement and a power battery power, specifically:

It can be seen that, in this embodiment, if in the ECO mode, when the driver steps on the accelerator pedal, the controller may control the power source (battery, motor) to control the hybrid coupling system at an optimal target for economy, so as to drive the vehicle to run, at this time, the entire vehicle may run in the single-motor pure electric mode, the hybrid drive 2 mode, the engine direct-drive 2-gear mode, or the series range-extended mode, because the single-motor pure electric mode, the hybrid drive 2 mode, the engine direct-drive 2-gear mode, or the series range-extended mode is a better working mode in economic performance, therefore, the driving style requirement of the user is responded to appropriately. More specifically, when the electric quantity of the power battery is lower than a first preset electric quantity threshold value, controlling the engine of the hybrid power coupling system to be started all the time so that the hybrid power coupling system works in a hybrid drive 2 mode, an engine direct drive 2-gear mode or a series range extending mode, and at the moment, the engine 1 of the hybrid power coupling system is started all the time; if the power battery electric quantity is higher than a second preset electric quantity threshold value and the vehicle speed requirement is lower than a preset vehicle speed, controlling an engine of the hybrid coupling system not to be started so that the hybrid coupling system works in the single-motor pure electric mode, at the moment, for example, an engine 1 of the hybrid coupling system is not started, wherein the second preset electric quantity threshold value is larger than a first preset electric quantity threshold value, for example, if the power battery electric quantity is lower than 15%, controlling the hybrid coupling system to work in a hybrid drive 2 mode, an engine direct drive 2-gear mode or a series range extending mode; and if the power battery is higher than 17% in electricity and the vehicle speed requirement is low, controlling the hybrid power coupling system to work in the single-motor pure electric mode, so that a working mode with high efficiency and low oil consumption can be selected in the ECO mode.

It should be noted that, the embodiments of the present invention are not limited to specific values of the first preset electric quantity threshold, the second preset electric quantity threshold, and the preset vehicle speed.

In one embodiment, the controller determines whether the vehicle currently satisfies the admission condition for the ECO mode, specifically:

determining whether the vehicle currently meets one of first preset conditions;

Wherein, in one embodiment, the first preset condition determined by the controller whether the vehicle satisfies includes:

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

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

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

d. 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 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.

It can be seen that, in the embodiment of the present invention, specific admission conditions of the ECO mode are provided, and when one of the first preset conditions is satisfied, it is determined that the vehicle does not satisfy the admission conditions of the ECO mode; the vehicle is determined to meet the admission condition of the ECO mode when the vehicle does not meet any one of the first preset conditions, so that the feasibility of the scheme is improved, in addition, the specific admission condition of the ECO mode is limited, the hybrid power coupling system can be effectively ensured to work normally after entering the ECO mode, and the working stability and the adaptability of the vehicle are improved.

It should be noted that the first preset condition is an example, and in practical applications, the first preset condition may also be limited by other conditions besides the above a-d conditions, or the first preset condition includes some of the a-d conditions, and the specific invention is not limited.

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

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

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

S90: ECO mode is maintained.

In this embodiment, when entering the ECO mode, the controller may determine whether a condition for maintaining the ECO mode is currently satisfied, that is, determine whether the vehicle currently satisfies a cut-out condition of the ECO mode, and if it is determined that the vehicle currently satisfies the cut-out condition of the ECO mode, cut out the ECO mode and directly enter the Normal mode; and if the vehicle is determined not to meet the switching-out condition of the ECO mode currently, keeping the ECO mode. Therefore, after the scheme enters the ECO mode, whether the vehicle is suitable for keeping the ECO mode or not can be continuously judged according to the vehicle condition, the ECO mode and the Normal mode can be switched, and the working economy of the vehicle can be enabled to be at a better working point while the driving style requirements of a user are met.

In one embodiment, the controller determines whether the vehicle currently meets a cut-out condition of the economy mode, specifically:

Wherein, in an embodiment, the second preset condition determined by the controller whether the vehicle satisfies includes:

B. the temperature of the parts of the power system is higher than a preset temperature value, for example, the temperature of a driving motor, a motor, an engine, a motor controller and the like is higher than the preset temperature value;

D. the power battery power is lower than a third preset power threshold, for example, the third preset power threshold may be 30% of the total power of the power battery, that is, the power battery power higher than 30% is considered to be sufficient, otherwise, it is considered to be insufficient;

E. receiving heating demand indication information, for example, the external environment temperature of the vehicle is too low, and the driver triggers the heating function of the vehicle;

F. receiving defrosting demand indication information, for example, excessive frost outside the vehicle affects the view of the vehicle, and the driver triggers a defrosting function of the vehicle;

G. an increase in power demand is detected.

It can be seen that in the embodiment of the present invention, specific switching-out conditions of the ECO mode are provided, and when one of the second preset conditions is satisfied, it is determined that the vehicle satisfies the switching-out conditions of the ECO mode; and in addition, the specific switching-out condition of the ECO mode is limited, so that the switching-out condition after the vehicle enters the ECO mode can be effectively ensured, the vehicle can be automatically controlled to be switched in different driving modes according to the actual state, and the working stability and the adaptability of the vehicle are improved.

It should be noted that the second preset condition is exemplified herein, and in practical applications, the second preset condition may be limited by other conditions besides the above a-G condition, for example, detecting that the temperature of the components of the power system is lower than a certain temperature value or detecting that the power demand is increased, it is understood that the excessive temperature may also affect the power output of the vehicle, and therefore may also be used as a condition limit, or the second preset condition includes some of the a-G conditions, and the invention is not limited in particular.

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:

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 mean the execution sequence, and the execution sequence of each process should be determined by the function and the inherent logic of the process, and should not constitute any limitation to the implementation process of the embodiments of the present invention, and the steps specifically implemented by the control method may correspond to the solutions implemented by the arrangement of the controller in the foregoing embodiments, and are not described repeatedly herein.

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 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 the economy mode if the first determining module determines that the mode type of the driving mode is the economy mode;

a control module 103, configured to control the vehicle to enter the economy mode if the second determination module determines that the vehicle meets the admission condition of the economy mode;

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

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

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

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

determining whether the vehicle currently meets one of first preset conditions;

In one embodiment, the first preset condition includes:

detecting a fault in a component of a powertrain;

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

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

and detecting that the electric quantity of the power battery is lower than a third preset electric quantity threshold value.

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

after the vehicle is controlled to enter the economy mode, determining whether the vehicle currently meets the switching-out condition of the economy mode;

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

In an embodiment, the second preset condition includes:

a failure of a component of the powertrain;

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 implemented by the controller, which are not described herein again. The various modules in the controller described above may be implemented in whole or in part by software, hardware, and combinations thereof. The modules can be embedded in a hardware form or independent from a processor in the 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 in the embodiment of the present invention, or the steps of the control method of the vehicle with the hybrid coupling system in the present 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:

after the vehicle enters the economic mode, controlling the hybrid power coupling system to work in a working mode corresponding to the economic 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:

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

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

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

Claims

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

2. A controller as claimed in claim 1 wherein the economy mode corresponds to operating modes including a single motor electric-only mode, a hybrid drive 2 mode, an engine direct drive 2-speed mode and a series range extending mode, the controller being arranged to:

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

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

determining whether the vehicle currently meets one of first preset conditions;

5. The controller according to claim 4, wherein the first preset condition determined by the controller whether the vehicle satisfies includes:

a failure of a component of the powertrain;

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

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

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

8. The controller according to claim 7, wherein the second preset condition determined by the controller whether the vehicle satisfies includes:

a failure of a component of the powertrain;

receiving heating demand indication information;

and receiving defrosting demand indication information.

9. 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:

10. 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:

11. A vehicle comprising a hybrid coupling system and a controller as claimed in any one of claims 1 to 8, 10.