CN113715803B - Controller, control method and medium for vehicle with hybrid coupling system - Google Patents

Abstract

The present invention discloses a controller, a control method and a computer-readable storage medium for a vehicle with a hybrid power coupling system. The hybrid power coupling system includes an engine and multiple motors. The controller can control the engine and at least one motor of the hybrid power coupling system to provide torque to operate in a corresponding working mode. The controller is arranged to: determine the driving style of the driver; determine whether it is necessary to determine the access conditions for the driving mode corresponding to the driving style; if it is necessary to determine the access conditions for the driving mode, determine whether the vehicle currently meets the access conditions for the driving mode; if the access conditions for the driving mode are met, control the vehicle to enter the driving mode so that the hybrid power coupling system operates in the working mode corresponding to the driving mode; if the access conditions for the driving mode are not met, control the vehicle to enter the switching driving mode corresponding to the driving mode so that the hybrid power coupling system operates in the working mode corresponding to the switching driving mode.

Description

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

Technical Field

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

Background technique

The driving performance of a vehicle is a comprehensive consideration of the needs of most consumers, and a balance is struck between power performance and economic performance. It is difficult for a car's driving performance to meet the needs of all drivers of different genders, ages, and driving styles. For example, some young male drivers are more interested in power and want strong power, but are not particularly interested in economy; some female consumers may be more interested in comfort and economy, and their demand for power is not obvious. Therefore, many car companies have introduced driving style buttons, which allow drivers to manually select different driving modes, and different types of drivers can choose driving modes according to their needs.

In the prior art, different driving styles under different driving modes are usually controlled by the speed of power response. For example, if the economic requirements are high, the power demand response is adjusted to be slower, and if the power requirements are high, the power demand response is adjusted to be faster.

It can be seen that the control method in the prior art is relatively simple, and only starts with the speed of power response, and the style is relatively single. For example, in the economy mode, the function of reducing power can be achieved by controlling the speed of accelerator pedal response, but the style adjusted only by the power response speed may not be what the user needs, and the economy is related to the action point of the power source. Only adjusting the power response speed may not necessarily achieve the best economy of the whole vehicle.

Summary of the invention

The present invention provides a controller, a control method and a computer-readable storage medium for a vehicle with a hybrid power coupling system, so as to solve the problem in the prior art that the vehicle may not necessarily operate at a working point with better vehicle economy after responding to the driver.

In a first aspect, a controller of a vehicle having a hybrid coupling system is provided, the hybrid coupling system comprising an engine and a plurality of motors, the controller being capable of controlling the engine and at least one motor of the hybrid coupling system to provide torque to operate in a corresponding operating mode, the controller being arranged to:

Determine the driver's driving style;

determining whether it is necessary to determine an access condition for a driving mode corresponding to the driving style;

If it is necessary to determine the entry condition of the driving mode, determining whether the vehicle currently meets the entry condition of the driving mode;

If the entry condition of the driving mode is met, controlling the vehicle to enter the driving mode so that the hybrid coupling system operates in the working mode corresponding to the driving mode;

If the entry condition of the driving mode is not met, the vehicle is controlled to enter a switching driving mode corresponding to the driving mode so that the hybrid coupling system operates in the working mode corresponding to the switching driving mode.

Further, the mode type of the driving mode includes a normal mode, and the controller is arranged as follows:

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

If the driving mode is the normal mode, determining that there is no need to determine the access condition for the driving mode;

If the driving mode is not the normal mode, it is determined that an access condition needs to be determined for the driving mode.

Furthermore, the mode types of the driving mode also include electric mode, economic mode and sports mode;

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

If the driving mode is the economic mode, the switching driving mode corresponding to the driving mode is the normal mode;

If the driving mode is the sports mode, the switching driving mode corresponding to the driving mode is the normal mode.

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

determining whether the vehicle currently meets a condition for switching out of the driving mode;

If the vehicle currently meets the cut-out condition of the driving mode, controlling the vehicle to cut out of the driving mode and enter the transfer driving mode;

If the vehicle currently does not meet the exit condition of the driving mode, the vehicle is controlled to continue to maintain the driving mode.

Further, if the driving mode is the sports mode, the cut-out condition of the driving mode includes: the power battery power is lower than a preset power threshold;

If the driving mode is the economic mode, the conditions for switching out of the driving mode include: an increase in power demand;

If the driving mode is the sports mode, the exit condition of the driving mode includes: the temperature of the target component is higher than a preset temperature threshold.

Further, the controller can control the working modes of the hybrid coupling system to include engine direct drive 1st gear mode, engine direct drive 2nd gear mode, hybrid drive 1st mode, hybrid drive 2nd mode, dual motor drive 1st mode, dual motor drive 2nd mode, single motor pure electric mode and series range extension mode;

The working mode corresponding to the electric mode is the single-motor pure electric mode, the dual-motor drive 1 mode or the dual-motor drive 2 mode;

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

The working mode corresponding to the sports mode is the dual-motor drive mode 1, hybrid drive mode 1 or series range-extended mode;

The working modes corresponding to the normal mode include all working modes of the hybrid coupling system.

In a second aspect, a control method for a vehicle having a hybrid coupling system is provided, wherein the hybrid coupling system includes an engine and a plurality of motors, and the method can control the engine and at least one motor of the hybrid coupling system to provide torque to operate in a corresponding working mode, and the method includes:

Determine the driver's driving style;

determining whether it is necessary to determine an access condition for a driving mode corresponding to the driving style;

If it is necessary to determine the entry condition of the driving mode, determining whether the vehicle currently meets the entry condition of the driving mode;

If the entry condition of the driving mode is met, controlling the vehicle to enter the driving mode so that the hybrid coupling system operates in the working mode corresponding to the driving mode;

If the entry condition of the driving mode is not met, the vehicle is controlled to enter a switching driving mode corresponding to the driving mode so that the hybrid coupling system operates in the working mode corresponding to the switching driving mode.

In a third aspect, a controller of a vehicle having a hybrid coupling system is provided, wherein the hybrid coupling system includes an engine and a plurality of motors, and the controller can control the engine and at least one motor of the hybrid coupling system to provide torque to operate in a corresponding operating mode, and the controller includes:

A first determination module, used to determine the driving style selected by the driver;

A second determination module is used to determine whether it is necessary to determine an access condition for the driving mode corresponding to the driving style;

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

a control module, configured to control the vehicle to enter the driving mode so that the hybrid coupling system operates in a working mode corresponding to the driving mode if the third determination module determines that the vehicle satisfies the entry condition of the driving mode;

The control module is further configured to control the vehicle to enter a switching driving mode corresponding to the driving mode if the third determination module determines that the vehicle does not meet the entry conditions of the driving mode, so that the hybrid coupling system operates in the working mode corresponding to the switching driving mode.

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

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

If the driving mode is the normal mode, determining that there is no need to determine the access condition for the driving mode;

If the driving mode is not the normal mode, it is determined that an access condition needs to be determined for the driving mode.

In a fourth aspect, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the aforementioned control method are implemented.

In one of the schemes implemented by the controller and control method of a vehicle with a hybrid coupling system, it can be seen that different working modes are set under different driving styles to meet the needs of different driving styles. When the access conditions of the driving mode are not met, it can be directly transferred to the transfer driving mode with the smallest difference from the driving mode selected by the driver, thereby achieving the response that best meets the driver's needs, so as to effectively ensure that the vehicle works in a driving style that fits the driver's driving needs, and the access conditions and cut-out conditions of the driving mode can be judged, so that the driving mode of the vehicle can be controlled in real time, so that the power source of the vehicle can work at the required working point, instead of simply adjusting the power response speed in the non-existing technology. The driving control method of the present invention can respond more closely to the driver's needs and effectively control the working point of the power source, so that the vehicle works at a better economic point.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

FIG1 is a schematic structural diagram of a hybrid power coupling system in the present invention;

FIG2 is a schematic diagram of the state of a hybrid power coupling system in hybrid drive mode 1 of the present invention;

FIG3 is a schematic diagram of the state of a hybrid power coupling system in hybrid drive mode 2 of the present invention;

FIG4 is a schematic diagram of the state of a hybrid power coupling system in dual-motor drive mode 1 of the present invention;

FIG5 is a schematic diagram of the state of a hybrid power coupling system in dual motor drive mode 2 of the present invention;

FIG6 is a schematic diagram of the state of a hybrid power coupling system in a single-motor pure electric mode of the present invention;

FIG7 is a schematic diagram of the state of a hybrid power coupling system in a series range-extending mode of the present invention;

FIG8 is a schematic diagram of the state of the hybrid coupling system in the parking power generation mode of the present invention;

FIG9 is a schematic diagram of wheel end torque output under different working modes of the hybrid coupling system of the present invention;

FIG10 is a schematic diagram of a flow chart of an embodiment of a controller for a vehicle having a hybrid coupling system according to the present invention;

FIG11 is a flow chart of another embodiment of the controller of a vehicle with a hybrid coupling system implemented in the present invention;

FIG12 is a schematic diagram of a structure of a controller in the present invention;

FIG. 13 is another schematic diagram of the structure of the controller in the present invention.

Detailed ways

The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments in the present invention, they all belong to the scope of protection of the present invention.

The present invention provides a hybrid power coupling system. First, the hybrid power coupling system provided by the present invention is described. Please refer to FIG1 , which is a structural schematic diagram of the hybrid power coupling system in the present invention. The hybrid power coupling system includes an engine 1, a first clutch 2, an input shaft 3, and a planetary gear mechanism, wherein the planetary gear mechanism includes a sun gear 4, a planetary carrier 5, and a ring gear 6. The hybrid power coupling system also 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 drive motor 16, a sixth gear 17, and a differential 18. The relationship between the various components of the hybrid power coupling system is as follows:

The brake 7 is used to brake the sun gear 4 .

The first clutch 2 is used to control whether the power of the engine 1 is output, thereby realizing switching between the pure electric mode and the hybrid mode.

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

When the brake 7 is engaged, the sun gear 4 will be braked. At this time, the power of the engine 1 will be transmitted to the planetary carrier 5 through the ring gear 6, and then transmitted to the third gear 13 through the planetary carrier 5. The third gear 13 transmits the power to the intermediate shaft 12, and the intermediate shaft 12 transmits the power to the sixth gear 17 through the fourth gear 14. Finally, the sixth gear 17 transmits the power to the differential 18 and the wheel end. At this time, it is the first gear of the engine. The above is the power transmission process of the first gear of the engine.

When the second clutch 8 is engaged, the sun gear 4 and the ring gear 6 of the planetary gear mechanism are connected together, and the sun gear 4, the planetary carrier 5 and the ring gear 6 of the planetary gear mechanism rotate as a whole and are fixedly connected. Then the power is transmitted to the third gear 13 through the planetary carrier 5, and 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 transmits the power to the differential 18 and the wheel end through the sixth gear. At this time, it is the second gear of the engine. The above process is the power transmission process of the second gear of the engine.

The driving 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, the intermediate shaft 12 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 can be understood that the above describes the relationship between the various components of the hybrid coupling system. For the hybrid coupling system, according to different usage conditions, the engine 1, generator 11, drive motor 16, first clutch 2, second clutch 8 and brake 7 of the hybrid coupling system can be comprehensively controlled to enable the hybrid coupling system to have a variety of different operating modes.

Among them, the working modes of the hybrid coupling system include engine direct drive 1st gear mode, engine direct drive 2nd gear mode, hybrid drive 1 mode, hybrid drive 2 mode, dual motor drive 1 mode, dual motor drive 2 mode, single motor pure electric mode, series extended range mode and parking power generation mode. It should be noted that, in addition to the above-mentioned working modes, the hybrid coupling system also has a braking energy recovery mode, etc. The specific present invention does not cite examples one by one, nor does it limit the hybrid coupling system in the present invention.

When the hybrid coupling system operates in the engine direct drive 1st gear mode, the engine 1 is driven, the generator 11 is not working, the drive motor 16 is not working, 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 or low speed.

When the hybrid coupling system operates in the engine direct drive 2nd gear mode, the engine 1 is driven, the generator 11 is not working, the drive motor 16 is not working, 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 speed.

When the hybrid coupling system works in the hybrid drive 1 mode, as shown in FIG2 , the engine 1 drives, the generator 11 drives, the drive motor 16 drives, the first clutch 2 is engaged, the second clutch 8 is disengaged, the brake 7 brakes, and the vehicle speed is at a medium or low speed. The dashed arrows in FIG2 indicate the direction of power transmission, the first clutch 2 and the second clutch 8 are in a coupled state when covered by a shadow, the brake 7 is in a braked state when covered by a shadow, and the arrows indicate the direction of power transmission.

When the hybrid coupling system operates in hybrid drive mode 2, as shown in FIG3 , the engine 1 drives, the generator 11 drives, the drive motor 16 drives, the first clutch 2 engages, the second clutch 8 engages, the brake 7 disengages, and the vehicle speed is at a medium to high speed.

When the hybrid coupling system operates in the dual-motor drive 1 mode, as shown in FIG4 , the engine 1 is not working, the generator 11 is driving, the drive motor 16 is driving, the first clutch 2 is disengaged, the second clutch 8 is disengaged, the brake 7 is braking, and the vehicle speed is at a medium or low speed.

When the hybrid coupling system operates in dual-motor drive mode 2, as shown in FIG5 , the engine 1 is not working, the generator 11 is driving, the drive motor 16 is driving, 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 speed.

When the hybrid coupling system operates in the single-machine pure electric mode, as shown in FIG6 , the engine 1 does not work, the generator 11 does not work, the drive 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 full vehicle speed.

When the hybrid coupling system operates in the series extended-range mode, as shown in FIG7 , the engine 1 generates electricity, the generator 11 generates electricity and starts the engine 1 , the drive motor 16 drives, the first clutch 2 engages, the second clutch 8 disengages, the brake 7 disengages, and the vehicle speed is at full vehicle speed.

When the hybrid coupling system operates in the parking power generation mode, as shown in Figure 8, the engine 1 generates electricity, the generator 11 generates electricity and starts the engine 1, the drive motor 16 does not work, the first clutch 2 does not work, the second clutch 8 does not work, the brake 7 does not work, and the vehicle speed is parked.

It can be seen that according to different needs, the hybrid coupling system can be made to work in one of the above-mentioned working modes. It is worth noting that the above-mentioned medium and low vehicle speeds, medium and high vehicle speeds and full vehicle speeds can all be configured, and the present invention does not make specific limitations. Among them, the medium and high vehicle speeds are greater than the medium and low vehicle speeds, and the medium and high vehicle speeds and the medium and low vehicle speeds correspond to different vehicle speed ranges respectively. The full vehicle speed refers to the vehicle speed being at a certain fixed speed. The parking speed means that the vehicle speed is zero in the parking power generation mode and the engine generates electricity, the drive motor generates electricity and is used to start the engine.

For ease of reading and understanding, when the hybrid coupling system is in different working modes, the corresponding implementation conditions of the execution components and execution elements can be found in Table 1 below:

Table 1

In addition, it is understandable that the hybrid coupling system has different wheel-end torques (Nm) in different working modes and at different vehicle speeds (km/h). Specifically, please refer to FIG9 , Dev1 is dual motor drive mode 1, DEV2 is dual motor drive mode 2, SEV is single motor pure electric and series range extension mode, H1 is hybrid drive mode 1, H2 is hybrid drive mode 2, ICE1 is engine direct drive mode 1, and ICE2 is engine direct drive mode 2. It should be noted that FIG9 is only an example here.

The hybrid power coupling system provided by the present invention is described above. In the present invention, for the hybrid power coupling system, a controller of a vehicle having the hybrid power coupling system is provided. The hybrid power coupling system includes an engine (such as an engine) and multiple motors (drive motors, generators). The controller can control the engine and at least one motor of the hybrid power coupling system to provide torque to operate in a corresponding working mode. It is worth noting that in a vehicle using the hybrid power coupling system, an embodiment of the present invention includes multiple different driving modes, and the driving modes include an electric mode (EV mode), an economic mode (ECO mode), a normal mode (Normal mode) and a sports mode (Sport mode), and there are corresponding working modes for different driving modes, wherein the driving performance under different driving modes is different, and the driving performance includes power and economy. Different driving modes under the same driving performance type have different driving performance heights. Exemplarily, the driving performance under different driving modes can be shown in the following Table 2:

Table 2

It can be seen that the driving performance in different driving modes is different, and different driving modes have different driving performance levels under the same driving performance type. Among them, the power of the EV mode depends on the power battery power. If the power battery power is higher than a certain value, the power performance of the EV mode can be higher than the Sport mode and other driving modes. I will not describe it in detail here.

Among them, in the embodiment of the present invention, the working mode corresponding to the EV mode is the single-motor pure electric mode, the dual-motor drive 1 mode or the dual-motor drive 2 mode;

The working modes corresponding to the ECO mode are the single-motor pure electric mode, hybrid drive 2 mode, engine direct drive 2-speed mode or series range-extended mode;

The operating mode corresponding to the Sport mode is the dual-motor drive mode 1, hybrid drive mode 1 or series range-extended mode;

The working modes corresponding to the Normal mode include all working modes of the hybrid coupling system.

The driving mode control method provided by the present invention aims to effectively control the driving mode of the entire vehicle so that the vehicle can appropriately respond to the driver's needs and operate at a working point with better economy, which is described in detail below.

Referring to FIG. 10 , an embodiment of the present invention provides a controller of a vehicle having a hybrid coupling system, wherein the hybrid coupling system includes an engine and a plurality of motors, and the controller can control the engine and at least one motor of the hybrid coupling system to provide torque to operate in a corresponding operating mode, and the controller is arranged to implement the following scheme:

S10: determining the driving style of the driver;

When the driver drives a vehicle equipped with a hybrid coupling system as shown in FIG1 , the driver can select the desired driving style according to driving needs. For example, a driving style selection button can be set at a location such as the center console of the vehicle. When the driver touches or clicks one of the buttons, a driving style can be selected accordingly. For example, driving modes such as EV, ECO, Normal, and Sport can be selected. For example, when the driver pays more attention to economy and avoids consuming oil, the driver can select EV or ECO driving mode through a button. When the driver selects the EV driving mode through a button, the vehicle controller can determine the driving mode selected by the driver.

S20: Determine whether it is necessary to determine the access conditions for the driving mode corresponding to the driving style, if necessary, execute step S30, if not, execute step S40.

As mentioned above, the vehicle has multiple driving modes. In the embodiment of the present invention, for certain driving modes, it is necessary to determine whether it is necessary to determine the access conditions. Therefore, when determining the driver's driving style, it is necessary to determine whether it is necessary to determine the access conditions for the driving mode corresponding to the driving style. If necessary, execute step S30, if not, execute step S40.

S30: Determine whether the vehicle currently meets the entry conditions of the driving mode, if so, execute step S40, if not, execute step S50.

After determining that the entry condition needs to be determined for the driving mode selected by the driver, it is further determined whether the vehicle currently meets the entry condition of the driving mode. If so, step S40 is executed; if not, step S50 is executed.

S40: Controlling the vehicle to enter the driving mode so that the hybrid coupling system operates in a working mode corresponding to the driving mode.

If it is determined according to the mode type of the driving mode that the access condition determination of the driving mode is not required, the vehicle is controlled to enter the driving mode so that the hybrid coupling system operates in the working mode corresponding to the driving mode. Alternatively, if it is determined that the access condition determination of the driving mode is required and the vehicle currently meets the access condition of the driving mode, the vehicle is controlled to enter the driving mode so that the hybrid coupling system operates in the working mode corresponding to the driving mode, that is, if the access condition of the driving mode is met, the vehicle is allowed to enter the driving mode. After the vehicle enters the driving mode, the hybrid coupling system can be controlled to work in the corresponding working mode selected by the mode control strategy in the driving mode. For example, when the driver selects the EV driving mode through a button and the EV driving mode meets the access condition of the EV mode, the controller will control the vehicle to enter the EV driving mode, so that the hybrid coupling system can be controlled to work in the corresponding working mode selected by the EV mode control strategy in the EV mode.

S50: Controlling the vehicle to enter a switching driving mode corresponding to the driving mode so that the hybrid coupling system operates in the working mode corresponding to the switching driving mode.

If it is determined that the vehicle currently does not meet the access conditions of the driving mode, it means that the vehicle cannot enter the driving mode at this time. At this time, the vehicle is controlled to enter the transfer driving mode corresponding to the driving mode so that the hybrid coupling system works in the working mode corresponding to the transfer driving mode. Among them, different driving modes under the same driving performance type have different driving performance heights, and the transfer driving mode is the driving mode with the smallest difference in driving performance height from the driving mode among all driving modes of the vehicle. That is, if the access conditions of the driving mode are not met, the vehicle is not allowed to enter the driving mode, and directly transfers to the transfer driving mode corresponding to the driving mode.

It can be seen that in the embodiment of the present invention, different driving style buttons are developed for drivers with different driving style requirements, and different types of drivers can manually select driving modes such as EV, ECO, Normal, and Sport according to their own needs. Different working modes are set in different driving modes to meet the needs of different driving styles. When the access conditions of the driving mode are not met, it can be directly transferred to the transfer driving mode with the smallest difference from the driving mode selected by the driver, so as to achieve the response that best fits the driver's needs, so as to effectively ensure that the vehicle works in a driving style that fits the driver's driving needs, and the access conditions and cut-out conditions of the driving mode will be judged, so that the driving mode of the vehicle can be controlled in real time, so that the power source of the vehicle can work at the required working point, instead of simply adjusting the power response speed in the non-existing technology, the driving control method of the present invention can respond more closely to the driver's needs and effectively control the working point of the power source, so that the vehicle works at a better economic point.

In one embodiment, in step S20, the controller determines whether it is necessary to determine the access condition for the driving mode according to the mode type of the driving mode, specifically:

S21: Determine whether the mode type of the driving mode is the normal mode. If the driving mode is the Normal mode, execute step S22; if the driving mode is not the Normal mode, execute step S23.

S22: Determine that there is no need to determine entry conditions for the driving mode.

S23: Determine that an entry condition needs to be determined for the driving mode.

The embodiment of the present invention specifically describes in which driving mode the access conditions need to be determined. Specifically, if the driver selects the Normal mode, it is determined that the access conditions do not need to be determined for the driving mode; if the driver selects a non-Normal mode, that is, if the driver selects a driving mode other than the Normal mode, it is determined that the access conditions need to be determined for the driving mode. For example, if the driver selects the EV mode, the Sport mode, and the ECO mode, the access conditions need to be determined for the driving mode. It can be understood that, since the hybrid coupling system can work in any working mode in the Normal mode, it can be adjusted to a certain working mode according to the actual vehicle conditions and the driver's needs. Therefore, when the driver selects the Normal mode, it is not necessary to determine the access conditions for the driving mode, and there is no special requirement for driving performance, which allows the driver to obtain the desired driving style in the Normal mode and improve the diversity of driving styles.

In one embodiment, if the driving mode is the EV mode, the switching driving mode corresponding to the driving mode is the ECO mode;

If the driving mode is the ECO mode, the switching driving mode corresponding to the driving mode is the Normal mode;

If the driving mode is the Sport mode, the transition driving mode corresponding to the driving mode is the Normal mode.

It can be seen that in this embodiment, the corresponding transfer driving mode when the driver selects a certain driving mode and the driving mode does not meet the access conditions is specifically described. When the access conditions of the driving mode are not met, it can be directly transferred to the transfer driving mode with the smallest difference from the driving mode selected by the driver, so as to achieve the response that best meets the driver's needs. For example, if the driving mode selected by the driver is the EV mode, it will directly transfer to the ECO mode when the access conditions of the EV mode are not met. It can be understood that since the driver has selected the EV mode, it can be seen that the driver has higher requirements for economy and lower requirements for power. Therefore, when the driver selects the EV mode and the access conditions of the EV mode are not met at present, it will choose to transfer to the ECO mode, so that the vehicle enters the ECO mode, that is, the ECO mode closest to the EV mode is selected, so that it can respond appropriately to the driver's choice. For another example, if the driving mode selected by the driver is the ECO mode, it will directly transfer to the Normal mode when the access conditions of the ECO mode are not met, so that it is appropriate to respond to the driver, and it does not consume too much oil, so as to improve the working economy point of the vehicle.

Among them, for different driving modes, there are corresponding access conditions. Taking the ECO mode as an example, after the vehicle enters the ECO mode, if a fault in a component of the power system is detected, or the temperature of the component of the power system is detected to be higher than the preset temperature value, or the slope of the road surface on which the current vehicle is traveling is detected to be higher than the preset slope threshold, or the power battery power is detected to be lower than the preset power threshold, it means that the access conditions of the ECO mode are not currently met; on the contrary, if a fault in a component of the power system is not detected, and the temperature of the component of the power system is not detected to be higher than the preset temperature value, and the slope of the road surface on which the current vehicle is traveling is not detected to be higher than the preset slope threshold, and the power battery power is not detected to be lower than the preset power threshold, it means that the access conditions of the ECO mode are currently met. It should be noted that the above-mentioned access conditions for the ECO mode are only exemplary here, and the present invention does not limit them. In addition, corresponding access conditions are set for other driving modes, and the present invention does not limit them specifically, nor does it explain them one by one.

In one embodiment, after step S40, that is, after the controller controls the vehicle to enter the driving mode, the controller is further arranged to:

S60: Determine whether the vehicle currently meets the conditions for switching out of the driving mode, if so, execute step S70; if not, execute step S80.

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

S80: Control the vehicle to continue to maintain the driving mode.

In this embodiment, after the controller controls the vehicle to enter the driving mode selected by the driver, it will determine in real time whether the vehicle currently meets the cut-out conditions of the driving mode. If so, the current driving mode will be cut out and directly transferred to the transfer driving mode. If not, the original driving mode will continue to be maintained. For example, after the controller controls the vehicle to enter the EV mode, it will determine in real time whether the cut-out conditions of the EV mode are currently met. If so, the EV mode will be cut out and transferred to the transfer driving mode corresponding to the EV mode, that is, the ECO mode. If not, the EV mode will continue to be maintained. For another example, after the controller controls the vehicle to enter the ECO mode, it will determine in real time whether the cut-out conditions of the ECO mode are currently met. If so, the ECO mode will be cut out and transferred to the transfer driving mode of the ECO mode, that is, the Normal mode. If not, the ECO mode will continue to be maintained.

Among them, for different driving modes, there are corresponding cut-out conditions. For example, if the driving mode is the EV mode, the cut-out conditions of the EV mode include: the power battery power is lower than the preset power threshold; if the driving mode is the ECO mode, the cut-out conditions of the ECO mode include: the power demand increases; if the driving mode is the Sport mode, the cut-out conditions of the Sport mode include: the target component temperature is higher than the preset temperature threshold. It should be noted that the above-mentioned access conditions for the ECO mode are only exemplary and are not limited in the present invention. In addition, for other driving modes, there may also be corresponding cut-out conditions, which are not specifically limited here and are not explained one by one.

For example, taking the ECO mode as an example, after the vehicle enters the ECO mode, if a failure of a power system component is detected, or the temperature of the power system component is detected to be higher than a preset temperature value, or the slope of the current vehicle's driving surface is detected to be higher than a preset slope threshold, or the power battery power is detected to be lower than a preset power threshold, or heating demand indication information is received, or defrost demand indication information is received, then it is determined that the ECO mode exit conditions are currently met; conversely, if no power system component failure is detected, and the temperature of the power system component is not detected to be higher than the preset temperature value, and the slope of the current vehicle's driving surface is not detected to be higher than the preset slope threshold, and the power battery power is not detected to be lower than the preset power threshold, and heating demand indication information is not received, and defrost demand indication information is not received, then it is determined that the ECO mode exit conditions are not currently met.

It can be understood that the above embodiment of the present invention is described in detail. For ease of understanding, the above process is described below with a complete application scenario flow in combination with FIG11, as shown in FIG11:

When the vehicle is started, it determines the driving mode selected by the driver:

1) If the driver selects the EV mode, the vehicle controller will first determine whether the entry conditions of the EV mode are met. If so, it will enter the EV mode. If not, it will choose to switch to the ECO mode and control the vehicle driving according to the EV mode control strategy. After entering the EV mode, if the EV mode exit conditions are met due to low battery power or other reasons, it will switch to the ECO mode.

Among them, in EV mode, there are single-motor pure electric mode, dual-motor drive 1 mode or dual-motor drive 2 mode to choose from. The controller will select the appropriate working mode in real time based on the driver's accelerator pedal requirements and other requirements, combined with the EV mode control strategy.

2) If the driver selects the ECO mode, the controller will first determine whether the ECO mode entry conditions are met. If so, it will enter the ECO mode and control the vehicle according to the EV mode control strategy. If not, it will choose to switch to the Normal mode. After taking into account the ECO mode, if the ECO mode cut-out conditions are met due to increased power demand, etc., the vehicle will be controlled to switch to the Normal mode.

Among them, in ECO mode, there are single-motor pure electric mode, hybrid drive 2 mode, engine direct drive 2-speed mode and series extended-range mode to choose from. The controller will select the appropriate working mode in real time based on the driver's accelerator pedal requirements and other needs, combined with the ECO mode control strategy.

3) If the driver selects the Normal mode, the vehicle is controlled to drive directly in the Normal mode.

Among them, in Normal mode, the controller will make a comprehensive judgment on the driver's needs, power and economy, consider all working modes, and control the vehicle's working mode in real time.

4) If the driver selects the Sport mode, the controller will first determine whether the entry conditions of the Sport mode are met. If so, it will enter the Sport mode and control the vehicle according to the Sport mode control strategy. If not, it will choose to switch to the Normal mode. After entering the Sport mode, if the Sport mode exit conditions are met due to overheating of components, etc., the vehicle will switch to the Normal mode.

Among them, in Soprt mode, the controller will give priority to working modes with good power, such as dual-motor drive mode 1, hybrid drive mode 1 or series extended-range mode.

It should be noted that an embodiment of the present invention also provides a control method for a vehicle with a hybrid coupling system, wherein the hybrid coupling system includes an engine and multiple motors. The method can control the engine and at least one motor of the hybrid coupling system to provide torque to operate in a corresponding working mode. The control method can correspond to the functions or execution steps arranged for the controller as described above, and will not be repeated here.

In one embodiment, a control method for a vehicle having a hybrid coupling system, wherein the hybrid coupling system includes an engine and a plurality of motors, wherein the method can control the engine and at least one motor of the hybrid coupling system to provide torque to operate in a corresponding operating mode, and the method includes:

Determine the driver's driving style;

determining whether it is necessary to determine an access condition for a driving mode corresponding to the driving style;

If it is necessary to determine the entry condition of the driving mode, determining whether the vehicle currently meets the entry condition of the driving mode;

If the entry condition of the driving mode is met, controlling the vehicle to enter the driving mode so that the hybrid coupling system operates in the working mode corresponding to the driving mode;

If the entry condition of the driving mode is not met, the vehicle is controlled to enter a switching driving mode corresponding to the driving mode so that the hybrid coupling system operates in the working mode corresponding to the switching driving mode.

It should be understood that the order of execution of the steps in the above embodiments does not necessarily mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present invention. The driving mode control device provided by the embodiment of the present invention is described below:

In one embodiment, a controller of a vehicle having a hybrid coupling system is provided, wherein the hybrid coupling system includes an engine and multiple motors, and the controller can control the engine and at least one motor of the hybrid coupling system to provide torque to operate in a corresponding working mode, and the controller in the aforementioned embodiment corresponds one to one. As shown in FIG12 , the controller 10 includes a first determination module 101, a second determination module 102, a third determination module 103 and a control module 104. The functional modules are described in detail as follows:

A first determination module 101 is used to determine the driving style of the driver;

A second determination module 102 is used to determine whether it is necessary to determine an access condition for the driving mode corresponding to the driving style;

a third determination module 103, configured to determine whether the vehicle currently meets the entry condition of the driving mode if the second determination module 102 determines that the entry condition of the driving mode needs to be determined;

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

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

Among them, different driving modes under the same driving performance type have different driving performance heights, and the transition driving mode is the driving mode with the smallest difference in driving performance height from the driving mode among all driving modes of the vehicle.

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

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

If the driving mode is the normal mode, determining that there is no need to determine the access condition for the driving mode;

If the driving mode is not the normal mode, it is determined that an access condition needs to be determined for the driving mode.

In one embodiment, the mode types of the driving mode further include electric mode, economic mode and sports mode;

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

If the driving mode is the economic mode, the switching driving mode corresponding to the driving mode is the normal mode;

If the driving mode is the sports mode, the switching driving mode corresponding to the driving mode is the normal mode.

In one embodiment, the third determination module 103 is specifically used to determine whether the vehicle currently meets the exit condition of the driving mode after the vehicle is controlled to enter the driving mode;

If the vehicle currently meets the cut-out condition of the driving mode, controlling the vehicle to cut out of the driving mode and enter the transfer driving mode;

If the vehicle currently does not meet the exit condition of the driving mode, the vehicle is controlled to continue to maintain the driving mode.

In one embodiment, if the driving mode is the sports mode, the conditions for switching out of the driving mode include: the power level of the power battery is lower than a preset power threshold;

If the driving mode is the economic mode, the conditions for switching out of the driving mode include: an increase in power demand;

If the driving mode is the sports mode, the exit condition of the driving mode includes: the temperature of the target component is higher than a preset temperature threshold.

For the specific definition of the controller, please refer to the definition of the controller or control method above, which will not be repeated here. Each module in the above controller can be implemented in whole or in part by software, hardware and a combination thereof. Each of the above modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the operations corresponding to each of the above modules.

In one embodiment, a controller is provided, which may be a vehicle controller on a vehicle, and its internal structure diagram may be shown in FIG13. The controller includes a processor and a memory connected via a system bus. The processor of the controller is used 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, a computer program, and a database. When the computer program is executed by the processor, the steps of the control method provided in the embodiment of the present invention are implemented.

In one embodiment, a computer readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

determining the driving mode selected by the driver;

determining whether it is necessary to determine an access condition for the driving mode according to the mode type of the driving mode;

If it is necessary to determine the entry condition of the driving mode, determining whether the vehicle currently meets the entry condition of the driving mode;

If the entry condition of the driving mode is met, controlling the vehicle to enter the driving mode so that the hybrid coupling system operates in the working mode corresponding to the driving mode;

If the entry condition of the driving mode is not met, the vehicle is controlled to enter a switching driving mode corresponding to the driving mode so that the hybrid coupling system operates in the working mode corresponding to the switching driving mode.

Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in the present application can include non-volatile and/or volatile memory. 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. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example. In actual applications, the above-mentioned functions can be distributed and completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above.

The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims (9)

1. A controller for a vehicle having a hybrid coupling system, characterized in that the hybrid coupling system comprises an engine and a plurality of motors, the controller can control the engine and at least one motor of the hybrid coupling system to provide torque to operate in a corresponding operating mode, and the controller is arranged as follows: Determine the driver's driving style; determining whether it is necessary to determine an access condition for a driving mode corresponding to the driving style; If it is necessary to determine the entry condition of the driving mode, determining whether the vehicle currently meets the entry condition of the driving mode; If the entry condition of the driving mode is met, controlling the vehicle to enter the driving mode so that the hybrid coupling system operates in the working mode corresponding to the driving mode; If the entry condition of the driving mode is not met, controlling the vehicle to enter a switching driving mode corresponding to the driving mode so that the hybrid coupling system operates in the working mode corresponding to the switching driving mode, wherein the switching driving mode is the mode with the smallest difference from the driving mode selected by the driver; The driving modes include normal mode, electric mode, economic mode and sports mode. If the driving mode is the electric mode, the switching driving mode corresponding to the driving mode is the economic mode; If the driving mode is the economic mode, the switching driving mode corresponding to the driving mode is the normal mode; If the driving mode is the sports mode, the switching driving mode corresponding to the driving mode is the normal mode. 2. The controller according to claim 1, characterized in that the controller is arranged as follows: determining whether the driving mode is the normal mode; If the driving mode is the normal mode, determining that there is no need to determine the access condition for the driving mode; If the driving mode is not the normal mode, it is determined that an access condition needs to be determined for the driving mode. 3. The controller according to any one of claims 1 to 2, characterized in that after the controller controls the vehicle to enter the driving mode, the controller is further arranged to: determining whether the vehicle currently meets a condition for switching out of the driving mode; If the vehicle currently meets the cut-out condition of the driving mode, controlling the vehicle to cut out of the driving mode and enter the transfer driving mode; If the vehicle currently does not meet the exit condition of the driving mode, the vehicle is controlled to continue to maintain the driving mode. 4. The controller according to claim 3, characterized in that If the driving mode is the sports mode, the conditions for switching out of the driving mode include: the power battery power is lower than a preset power threshold; If the driving mode is the economic mode, the conditions for switching out of the driving mode include: an increase in power demand; If the driving mode is the sports mode, the exit condition of the driving mode includes: the temperature of the target component is higher than a preset temperature threshold. 5. The controller according to any one of claims 1 to 2, characterized in that the controller can control the working modes of the hybrid coupling system to include engine direct drive 1st gear mode, engine direct drive 2nd gear mode, hybrid drive 1 mode, hybrid drive 2 mode, dual motor drive 1 mode, dual motor drive 2 mode, single motor pure electric mode and series range extension mode; The working mode corresponding to the electric mode is the single-motor pure electric mode, the dual-motor drive 1 mode or the dual-motor drive 2 mode; The working mode corresponding to the economic mode is the single-motor pure electric mode, hybrid drive 2 mode, engine direct drive 2-speed mode or series range extension mode; The working mode corresponding to the sports mode is the dual-motor drive mode 1, hybrid drive mode 1 or series range-extended mode; The working modes corresponding to the normal mode include all working modes of the hybrid coupling system. 6. A control method for a vehicle having a hybrid coupling system, wherein the hybrid coupling system comprises an engine and a plurality of motors, and the method can control the engine and at least one motor of the hybrid coupling system to provide torque to operate in a corresponding working mode, the method comprising: Determine the driver's driving style; determining whether it is necessary to determine an access condition for a driving mode corresponding to the driving style; If it is necessary to determine the entry condition of the driving mode, determining whether the vehicle currently meets the entry condition of the driving mode; If the entry condition of the driving mode is met, controlling the vehicle to enter the driving mode so that the hybrid coupling system operates in the working mode corresponding to the driving mode; If the entry condition of the driving mode is not met, controlling the vehicle to enter a switching driving mode corresponding to the driving mode so that the hybrid coupling system operates in the working mode corresponding to the switching driving mode, wherein the switching driving mode is the mode with the smallest difference from the driving mode selected by the driver; The driving modes include normal mode, electric mode, economic mode and sports mode. If the driving mode is the electric mode, the switching driving mode corresponding to the driving mode is the economic mode; If the driving mode is the economic mode, the switching driving mode corresponding to the driving mode is the normal mode; If the driving mode is the sports mode, the switching driving mode corresponding to the driving mode is the normal mode. 7. A controller for a vehicle with a hybrid coupling system, wherein the hybrid coupling system comprises an engine and a plurality of motors, the controller can control the engine and at least one motor of the hybrid coupling system to provide torque to operate in a corresponding working mode, the controller comprising: A first determination module, used to determine the driving style of the driver; A second determination module is used to determine whether it is necessary to determine an access condition for the driving mode corresponding to the driving style; a third determination module, configured to determine whether the vehicle currently meets the entry condition of the driving mode if the second determination module determines that the entry condition of the driving mode needs to be determined; a control module, configured to control the vehicle to enter the driving mode so that the hybrid coupling system operates in a working mode corresponding to the driving mode if the third determination module determines that the vehicle satisfies the entry condition of the driving mode; The control module is further configured to control the vehicle to enter a switching driving mode corresponding to the driving mode so that the hybrid coupling system operates in a working mode corresponding to the switching driving mode if the third determining module determines that the vehicle does not meet the entry condition of the driving mode, wherein the switching driving mode is a mode with the smallest difference from the driving mode selected by the driver; The driving modes include normal mode, electric mode, economic mode and sports mode. If the driving mode is the electric mode, the switching driving mode corresponding to the driving mode is the economic mode; If the driving mode is the economic mode, the switching driving mode corresponding to the driving mode is the normal mode; If the driving mode is the sports mode, the switching driving mode corresponding to the driving mode is the normal mode. 8. The controller according to claim 7, wherein the mode type of the driving mode comprises a normal mode, and the second determining module is specifically configured to: determining whether the mode type of the driving mode is the normal mode; If the driving mode is the normal mode, determining that there is no need to determine the access condition for the driving mode; If the driving mode is not the normal mode, it is determined that an access condition needs to be determined for the driving mode. 9. A computer-readable storage medium storing a computer program, wherein the computer program implements the steps of the control method according to claim 6 when executed by a processor.