CN113715804B

CN113715804B - Controller of vehicle with hybrid power coupling system, control method and vehicle

Info

Publication number: CN113715804B
Application number: CN202010442326.5A
Authority: CN
Inventors: 赵江灵; 朱永明; 李瑶瑶; 周文太; 魏丹; 苏建云
Original assignee: GAC Aion New Energy Automobile Co Ltd
Current assignee: GAC Aion New Energy Automobile Co Ltd
Priority date: 2020-05-22
Filing date: 2020-05-22
Publication date: 2024-04-12
Anticipated expiration: 2040-05-22
Also published as: CN113715804A

Abstract

The invention discloses a controller of a vehicle with a hybrid power coupling system, a control method and the vehicle, which can work on a working point with better economy when the vehicle is in an electric mode. A controller for a vehicle having a hybrid coupling system comprising an engine and a plurality of electric machines, the controller being capable of controlling the engine and at least one electric machine of the hybrid coupling system to provide torque to operate in respective modes of operation, 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 electric mode, determining whether the vehicle currently meets the admission condition of the electric mode; if the admission condition of the electric mode is met, controlling the vehicle to enter the electric mode; and after the vehicle enters the electric mode, controlling the hybrid power coupling system to work in a working mode corresponding to the electric mode according to the vehicle speed requirement and the electric quantity of the power battery.

Description

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

Technical Field

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

Background

The drivability of an automobile is difficult to meet the needs of all drivers with different sexes, different ages, and different driving styles. Such as: for some young male drivers, dynamic performance may be sought after; for some female drivers, economy and the like may be pursued. Thus, many car companies have pushed driving style buttons that allow the driver to manually select different driving modes.

In the prior art, when the driving mode is an electric mode, a specific operation mode in the electric mode is generally controlled directly by the speed of the power response, for example, when in the electric mode, if a more economical operation is desired, the power demand response is adjusted to be slower, and when a more power operation is desired, the power demand response is faster.

Therefore, the control method in the prior art is simpler, the style is single only when the power response speed is simple, the function of weakening the power performance can be realized by controlling the speed of the response of the accelerator pedal in the electric mode, but the style after the adjustment of the power response speed is not necessarily required by a user, the driving style of a driver is not attached, the economy is related to the action point of a power source, and the state of the adjustment of the power response speed is not necessarily the best economical state of the whole vehicle in the electric mode, so that an electric mode driving control strategy which can attach the requirement of the driver in the electric mode and work at a better economical point is needed.

Disclosure of Invention

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

In a first aspect, a controller for a vehicle having a hybrid coupling system, 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 modes of operation, 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 electric mode, determining whether the vehicle currently meets the admission condition of the electric mode;

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

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

Further, the operation modes corresponding to the electric mode include a single motor pure electric mode, a dual motor drive 1 mode, and a dual motor drive 2 mode, the controller being arranged to:

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

Further, the controller is arranged to:

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

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

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

wherein the second preset power threshold is greater than the first preset power threshold.

Further, the controller is further arranged to:

determining whether the vehicle currently meets one of preset conditions;

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

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

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

determining whether the vehicle currently meets a cut-out condition of the electric mode;

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

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

Further, the controller is further arranged to:

determining whether the vehicle currently meets one of preset conditions;

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

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

Further, the predetermined condition that the controller determines whether the vehicle satisfies includes:

The current speed is higher than the preset highest speed in the electric mode;

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

the parts of the power system are failed;

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

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

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

the power battery power is lower than a third preset power threshold;

receiving heating demand indication information;

defrosting demand indication information is received.

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 modes of operation, the method comprising:

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 modes of operation, 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 determining module is used for determining whether the vehicle currently meets the admission condition of the electric mode or not if the mode type of the driving mode is the electric mode;

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

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

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

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

In the scheme realized by the controller and the control method of the vehicle with the hybrid power coupling system, after the driving mode selected by the user is the electric mode, if the vehicle currently meets the access condition of the electric mode, the electric mode is entered, at the moment, the hybrid power coupling system can be controlled to work and switch in the working mode corresponding to the electric mode, specifically, the hybrid power coupling system is controlled to work in the working mode corresponding to the electric mode according to the vehicle speed requirement and the electric quantity of the power battery, the driving style requirement of the driver can be responded relatively in a close manner without damaging the style requirement of the driver on the electric driving, and the hybrid power coupling system can be switched and work in the working mode corresponding to the electric mode according to the vehicle speed requirement and the electric quantity of the power battery, so that the vehicle can work at the working point with better economical efficiency when in the electric mode.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments of the present invention will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

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

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

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

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

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

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

FIG. 7 is a schematic diagram of a hybrid power coupling system in series range-extending mode according to the present invention;

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

FIG. 9 is a schematic diagram of wheel end torque output for different modes of operation of the hybrid powertrain of the present invention;

FIG. 10 is a schematic diagram illustrating the switching of the corresponding operation modes in the electric mode according to the present invention;

FIG. 11 is a flow diagram of one embodiment implemented by a controller of a vehicle having a hybrid coupling system in accordance with the present invention;

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

fig. 13 is another structural schematic diagram of a controller of a vehicle having a hybrid coupling system in accordance with the present invention.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The present invention provides a hybrid coupling system, firstly, a description will be given of the hybrid coupling system provided by the present invention, referring to fig. 1, fig. 1 is a schematic structural diagram of the hybrid coupling system in the present invention, the hybrid coupling system includes an engine 1, a first clutch 2, an input shaft 3, and a planetary gear mechanism, where the planetary gear mechanism includes a sun gear 4, a planet carrier 5, and a ring gear 6, and the hybrid 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 18. Wherein the relationship of the various components of the hybrid coupling system is as follows:

The brake 7 is for braking the sun gear 4.

The first clutch 2 is configured to switch between the pure mode and the hybrid mode in order to control whether power of the engine 1 is output.

The function of the second clutch 8 and the brake 7 is to achieve two gears of the engine 1 in combination with a planetary gear mechanism.

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

When the second clutch 8 is combined, the sun gear 4 and the gear ring 6 of the planetary gear mechanism are connected together, the sun gear 4, the planet carrier 5 and the gear ring 6 of the planetary gear mechanism integrally rotate and are fixedly connected, 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 intermediate shaft 12 transmits the power to the sixth gear 17 through the fourth gear 14, and finally the power is transmitted to the differential 18 and the gear end through the sixth gear, and the process is a power transmission process of the second gear of the engine.

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

It will be appreciated that the above description of the relationship between the various components of the hybrid coupling system is provided, and that the hybrid coupling system may be provided with a plurality of different modes of operation by comprehensively controlling the components of the engine 1, the generator 11, the drive motor 16, the first clutch 2, the second clutch 8, and the brake 7 of the hybrid coupling system according to different usage conditions.

The working modes of the hybrid power coupling system comprise 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, a series range-extending mode and a parking power generation mode, and the hybrid power coupling system is provided with a braking energy recovery mode and the like besides the working modes.

When the hybrid coupling system operates in the hybrid drive 1 mode, as shown in fig. 2, the engine 1 is driven, the generator 11 is driven, the drive motor 16 is driven, the first clutch 2 is engaged, the second clutch 8 is disengaged, the brake 7 is braked, and the vehicle speed is at a medium-low vehicle speed. The arrow direction 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 braked state when they are shaded.

When the hybrid coupling system operates in the hybrid drive 2 mode, as shown in fig. 3, the engine 1 is driven, the generator 11 is driven, the drive motor 16 is driven, the first clutch 2 is engaged, the second clutch 8 is engaged, the brake 7 is disengaged, and the vehicle speed is at a medium-high vehicle speed.

When the hybrid coupling system is operated in the two-motor drive 1 mode, as shown in fig. 4, the engine 1 is not operated, the generator 11 is driven, the drive 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 is operated in the two-motor drive 2 mode, as shown in fig. 5, the engine 1 is not operated, the generator 11 is driven, the drive 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-high vehicle speed.

When the hybrid coupling system is operated in the single-motor electric-only mode, as shown in fig. 6, the engine 1 is not operated, the generator 11 is not operated, the drive motor 16 is driven, 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 power coupling system operates in the series extended range 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 engaged, the second clutch 8 is disengaged, the brake 7 is disengaged, and the vehicle speed is at full vehicle speed.

When the hybrid coupling system is operated 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 drive motor 16 is not operated, the first clutch 2 is not operated, the second clutch 8 is not operated, the brake 7 is not operated, 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 is driven, the generator 11 is not operated, the driving motor 16 is not operated, the first clutch 2 is combined, the second clutch 8 is separated, the brake 7 is braked, and the vehicle speed is at a medium-low vehicle speed.

When the hybrid power coupling system is operated in the engine direct drive 2-speed mode, the engine 1 is driven, the generator 11 is not operated, the driving motor 16 is not operated, the first clutch 2 is engaged, the second clutch 8 is engaged, the brake 7 is disengaged, and the vehicle speed is at a medium-high vehicle speed.

It can be seen that, according to different requirements, the hybrid power coupling system can be made to work in one of the above working modes, and it is worth noting that the above middle-low vehicle speed, middle-high vehicle speed and full vehicle speed can all be configured, and the invention is not limited in particular, wherein the middle-high vehicle speed is greater than the middle-low vehicle speed, the middle-high vehicle speed and the middle-low vehicle speed respectively correspond to different vehicle speed ranges, the full vehicle speed refers to that the vehicle speed is in a certain fixed vehicle speed running, the vehicle speed is zero when the vehicle is in the parking power generation mode, and the engine generates power, drives the motor to generate power and is used for starting the engine.

For convenience of reading and understanding, when the hybrid power coupling system is in different working modes, the implementation conditions of the corresponding execution components, execution elements and the like can be referred to as the following table 1:

TABLE 1

It is noted that, in a vehicle to which the above hybrid coupling system is applied, the vehicle 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 operation modes for the different driving modes, wherein the driving performance in the different driving modes is different, including the power performance and the economy performance, and the driving performance in the same driving performance type in the different driving modes is different in height, and the driving performance in the different driving modes can be shown in table 2 as follows, by way of example:

TABLE 2

It can be seen that drivability in different driving modes is different, and different driving modes have different drivability heights in the same drivability type. The power performance of the EV mode depends on the power battery power, and if the power battery power is higher than a certain value, the power performance of the EV mode may be higher than that of the Sport mode or other driving modes, which will not be described in detail herein.

In the embodiment of the present invention, the working modes corresponding to the EV mode are a single-motor pure electric mode, a dual-motor driving 1 mode and a dual-motor driving 2 mode, and in the EV mode, different wheel end torques (Nm) are provided when different vehicle speeds (km/h) are provided, specifically, please refer to fig. 9, DEV1 is the dual-motor driving 1 mode, DEV2 is the dual-motor driving 2 mode, SEV is the single-motor pure electric mode and the series extended range mode, it can be seen that the different working modes have different characteristics, and multiple different working modes can adapt to different requirements of a driver, and improve the adaptability, and it should be noted that fig. 9 is only an illustration herein.

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

assuming that the single motor pure electric mode is currently adopted, if the brake 7 is engaged, switching to the double motor drive 1 mode; when the second clutch 8 is engaged, the mode is switched to the two-motor drive 2 mode.

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

Assuming that the two-motor drive 2 mode is currently set, if the second clutch 8 is disengaged, the single-motor electric-only mode is switched, and if the first clutch 8 is disengaged and the brake 7 is engaged, the two-motor drive 1 mode is switched.

As shown in fig. 11, an embodiment of the present invention provides a controller for a vehicle having a hybrid coupling system including 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 modes of operation, the controller being arranged to implement:

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

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

When the driver drives the vehicle equipped with the hybrid coupling system as shown in fig. 1, the driver may select a desired driving mode according to driving requirements, and exemplarily, a driving mode selection button may be set at a central position of the vehicle, a corresponding mode selection instruction may be generated when the driver touches or clicks one of the buttons, the controller may receive the mode selection instruction, and a mode type of the driving mode selected by the user may be determined according to the mode selection instruction. For example, the driver may select a driving mode such as EV, ECO, normal, sport. For example, when the driver compares the fuel saving and time saving, the driver clicks a button corresponding to the EV mode, and at this time, the controller may determine that the driving mode selected by the user is the EV mode.

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

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

S40: and controlling the vehicle to enter the EV mode.

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

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

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

Therefore, after the driving mode selected by the user is the EV mode, if the vehicle currently meets the admittance condition of the EV mode, the vehicle enters the EV mode, at this time, the hybrid power coupling system can be controlled to work and switch in the working mode corresponding to the EV mode, specifically, the hybrid power coupling system is controlled to work in the working mode corresponding to the EV mode according to the vehicle speed requirement and the power battery power, the driving style requirement of the driver for economic driving can be responded relatively in a pertinent manner without damaging the driving style requirement of the driver, and the hybrid power coupling system can work in the working mode corresponding to the EV mode according to the vehicle speed requirement and the power battery power, so that the vehicle can work at the working point with better economical efficiency.

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

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

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

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

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

It can be seen that, in this embodiment, if in the EV mode, when the driver presses the accelerator pedal, the controller may control the power source to control the hybrid power coupling system with the target of optimal economy so as to drive the vehicle to run, and at this time, the whole vehicle may run in the single-motor electric-only mode, the dual-motor drive 1 mode, or the dual-motor drive 2 mode, and since the single-motor electric-only mode, the dual-motor drive 1 mode, or the dual-motor drive 2 mode is the electric-only mode, the driving style requirements of the user for the electric mode are closely responded. More specifically, when the power battery power is lower than a first preset power threshold and the vehicle speed requirement is higher than a preset vehicle speed threshold, the hybrid power coupling system is controlled to operate in the dual-motor driving 2 mode, and when the power battery power is lower than the first preset power threshold, which indicates that the current power battery residual allowance (SOC) may be insufficient for supporting driving and the driver wants to drive at a higher vehicle speed, the hybrid power coupling system is controlled to operate in the dual-motor driving 1 mode in response to the driving requirement of the driver for the higher vehicle speed, and the dual-motor is required to drive at the moment. When the power battery electric quantity is higher than a second preset electric quantity threshold value, the power battery electric quantity is still sufficient, and the hybrid power coupling system is controlled to work in a single-motor pure electric mode, so that unnecessary power consumption is reduced.

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

In an embodiment, the controller is further arranged to:

determining whether the vehicle currently meets one of preset conditions;

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

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

Wherein, in an embodiment, the predetermined condition that the controller determines whether the vehicle satisfies includes:

a. failure of components of the power system, such as failure of the drive motor, motor controller, etc.;

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

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

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

e. the power battery power is lower than a third preset power threshold, the battery controller feeds back the quantity of the power battery SOC at any time, and the power battery power can be judged according to the SOC value. For example, the third preset charge threshold may be 30% of the total power of the power cell, i.e. more than 30% of the power cell is considered sufficient, and vice versa.

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

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

It can be seen that, in the embodiment of the present invention, specific admittance conditions of the EV mode are provided, and when one of the preset conditions is satisfied, it is determined that the vehicle does not satisfy the admittance conditions of the EV mode; and in addition, the admission condition of a specific EV mode is limited, so that the hybrid power coupling system can be enabled to work in the EV mode normally, the driving requirement of a driver can be responded accurately, and the working stability and the adaptability of the vehicle are improved.

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

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

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

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

S90: the EV mode is maintained.

In this embodiment, upon entering the EV mode, the controller determines whether the condition for maintaining the EV mode is currently satisfied, that is, determines whether the vehicle currently satisfies the cut-out condition for the EV mode, and if it is determined that the vehicle currently satisfies the cut-out condition for the EV mode, cuts out the EV mode and directly enters the ECO mode; and if the vehicle is determined not to meet the cut-out condition of the EV mode currently, the EV mode is maintained. It can be seen that after the vehicle enters the EV mode, whether the vehicle is suitable for keeping the EV mode or not can be continuously judged according to the vehicle condition, the vehicle can be switched between the EV mode and the ECO mode, and the vehicle working economy can be enabled to be at a better working point while the driving style requirements of the user are responded in a pertinent manner.

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

determining whether the vehicle currently meets one of preset conditions;

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

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

In an embodiment, the description of the preset condition may refer to the foregoing description, and the description is not repeated here.

In addition, in one embodiment, during traveling in the EV mode, when the power battery level drops to a certain value, such as 15% of the power battery level, without a malfunction and without a need to start the engine, the EV mode is automatically switched to the ECO mode. If the vehicle still needs to enter the EV mode, the key of the EV mode can be pressed for a long time until the EV indicator lamp on the instrument continuously flashes to indicate that the vehicle enters the EV mode, the output power is limited to a certain degree, and the vehicle is automatically switched to the ECO mode again until the power battery level drops to another certain value, for example, 15% of the power battery level.

It can be seen that in the above embodiment, different operation modes may be selected according to the needs of the driver, rather than simply adjusting the speed of the power response, so as to be more suitable for the needs of the driver.

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

It should be noted that, regarding the steps of the control method of the vehicle having the hybrid coupling system, reference may be made specifically to the functions and implementation steps in which the aforementioned controller is arranged, and detailed description thereof will not be repeated here.

It should be understood that, the sequence number of each step in the foregoing embodiment does not mean that the execution sequence of each process should be determined by the function and the internal logic of each process, but should not limit the implementation process of the embodiment of the present invention, and the foregoing control method may correspond to the function or step that is arranged and implemented by referring to the foregoing controller, which is not repeated herein in detail.

In one embodiment, a controller for a vehicle having a hybrid coupling system is provided, wherein the hybrid coupling system includes 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 modes of operation, the controller in the foregoing embodiments having a one-to-one correspondence of functions. 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 described 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 the vehicle currently meets an admission condition of the electric mode if the mode type of the driving mode is the electric mode;

a control module 103, configured to control the vehicle to enter the electric mode if an admission condition of the electric mode is satisfied;

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

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

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

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

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

determining whether the vehicle currently meets one of preset conditions;

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

the control module 103 is further configured to:

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

determining whether the vehicle currently meets one of preset conditions;

The preset conditions include:

the current speed is higher than the preset highest speed in the electric mode;

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

the parts of the power system are failed;

the power battery power is lower than a third preset power threshold;

receiving heating demand indication information;

defrosting demand indication information is received.

Specific limitations regarding the controller may be referred to above as limitations on the functions or steps that the controller is arranged to implement, and are not described in detail herein. The various modules in the controller described above may be implemented in whole or in part by software, hardware, and combinations thereof. The above modules may be embedded in hardware or may be independent of a processor in the controller, or may be stored in software in a memory in the controller, so that the processor may call and execute operations corresponding to the above modules.

In one embodiment, a controller is provided, which may be a vehicle controller on a vehicle, and an internal structure thereof may be as shown in fig. 13. The controller includes a processor and a memory connected by a system bus. Wherein the processor of the controller is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, computer programs, and a database. The computer program, when executed by a processor, implements the steps of the method of the present embodiment of the invention to provide a function of a controller of a vehicle having a hybrid coupling system, or a control method of a vehicle having a hybrid coupling system.

In one embodiment, a controller is provided that includes 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:

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:

Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the various embodiments provided herein may include non-volatile and/or volatile memory. The nonvolatile 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), memory bus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), among others.

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

The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the 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 scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention, and are intended to be included in the scope of the present invention.

Claims

1. A controller of 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 modes of operation, the controller being arranged to:

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

the controller is arranged to:

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

2. The controller of claim 1, wherein the controller is further arranged to:

determining whether the vehicle currently meets one of preset conditions;

3. The controller of claim 2, wherein after the controller controls the vehicle to enter the electric mode, the controller is further arranged to:

4. A controller according to claim 3, wherein the controller is arranged to:

determining whether the vehicle currently meets one of preset conditions;

5. The controller of claim 4, wherein the predetermined condition that the controller determines whether the vehicle satisfies comprises:

the current speed is higher than the preset highest speed in the electric mode;

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

the parts of the power system are failed;

The power battery power is lower than a third preset power threshold;

receiving heating demand indication information;

defrosting demand indication information is received.

6. A method of controlling 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 modes of operation, the method comprising:

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

the hybrid power coupling system is controlled to work in a working mode corresponding to the electric mode according to the vehicle speed requirement and the electric quantity of the power battery, and comprises:

Controlling the hybrid power coupling system to be in a single-motor pure electric mode, a double-motor driving 1 mode or a double-motor driving 2 mode according to the vehicle speed requirement and the electric quantity of the power battery;

the hybrid power coupling system is controlled to be in a single-motor pure electric mode, a double-motor driving 1 mode or a double-motor driving 2 mode according to the vehicle speed requirement and the power of the power battery, and comprises the following components:

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 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 modes of operation, the controller comprising:

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

the control module is further configured to, when the vehicle is controlled to enter an economy mode:

the control module is specifically further configured to:

8. A vehicle comprising a hybrid coupling system and a controller according to any one of claims 1-5, 7.