CN114909469A - Vehicle upshift control method and device and storage medium - Google Patents

Abstract

The invention discloses a vehicle upshift control method, a vehicle upshift control device and a storage medium, wherein the method part comprises the following steps: when the situation that the vehicle needs to be subjected to unpowered upshift to the second hybrid gear is determined, in an oil pressure control stage, oil pressures of a separation clutch and a combination clutch are controlled until a first preset condition is met, so that a speed regulation stage is started; in the speed regulation stage, the torque of the engine, the rotating speed of the generator, the oil pressure of the separating clutch and the oil pressure of the combining clutch are coordinately controlled until a second preset condition is met, so that the locking stage is started; controlling the oil pressure of the combined clutch to rise in the locking stage, and locking the combined clutch when the combined clutch is combined; in the invention, the engine, the motor and the two clutches are cooperatively controlled, so that the switching process of the vehicle to the second hybrid gear is accurately controlled, and good drivability is ensured during the mode switching of the vehicle.

Description

A vehicle upshift control method, device and storage medium

technical field

The invention relates to the field of hybrid vehicle control, in particular to a vehicle upshift control method, device and storage medium.

Background technique

A hybrid vehicle is a type of vehicle between traditional fuel vehicles and pure electric vehicles. It usually includes multiple power sources such as engines and motors, as well as multiple clutch modes or gear actuators. Hybrid vehicles use batteries. and the motor to cut peaks and fill valleys at the engine operating point. The flexibility of hardware topology not only brings the advantages of efficiency and working methods, but also often brings difficulties in software control. The key to the excellent performance of the hybrid system lies in the hybrid system. Cooperative control of multiple power components and manipulation elements of a power system.

The shift control method for hybrid vehicles in the prior art is developed based on the clutch and transmission control principles of traditional fuel vehicles. In the process of power upshifting or downshifting, generally only the torque of the engine is precisely controlled. , in order to reduce the frustration caused by the shifting process, thereby improving the user's driving experience. However, this type of method cannot be well adapted to a hybrid vehicle with multiple power sources, and the hybrid vehicle still suffers from the problem of stumbling during the shifting process, thus affecting the driving comfort.

SUMMARY OF THE INVENTION

The present invention provides a vehicle upshift control method, device and storage medium, so as to solve the problem that in the prior art, only the engine is controlled, resulting in a setback in the shifting process of the hybrid vehicle.

A vehicle upshift control method, when it is determined that the vehicle needs to be upshifted to a hybrid second gear without power, the method includes:

In the oil pressure control stage, the oil pressure of the separation clutch and the coupling clutch is controlled until the first preset condition is satisfied, so as to enter the speed regulation stage;

In the speed regulation stage, coordinated control is performed on the torque of the engine, the rotational speed of the generator, and the oil pressure of the separation clutch and the coupling clutch until the second preset condition is satisfied, so as to enter the lock stage;

In the lock-up phase, the oil pressure of the engagement clutch is controlled to increase, and the engagement clutch is locked when the engagement clutch is engaged.

Further, the speed regulation stage includes a first speed regulation stage and a second speed regulation stage, and the coordinated control is performed on the torque of the engine, the rotational speed of the generator, and the oil pressure of the separation clutch and the coupling clutch until the first speed regulation stage is satisfied. Two preset conditions, including:

In the first speed regulation stage, the torque of the engine and the oil pressure of the engagement clutch are kept unchanged, the oil pressure of the release clutch is controlled to drop to a preset value, and the rotational speed of the generator is adjusted. closed-loop control, so that the input shaft speed of the generator meets the requirements of the hybrid second gear;

determining whether the rotational speed of the generator is a preset rotational speed;

If the rotational speed of the generator is the preset rotational speed, the second speed regulation stage is entered, and the rotational speed of the generator is fine-tuned in the second speed regulation stage until the second predetermined speed is satisfied. Set conditions.

Further, the fine-tuning of the rotational speed of the generator in the second speed regulation stage until the second preset condition is met, including:

In the second speed regulation stage, keep the oil pressure of the separation clutch unchanged, control the oil pressure of the engagement clutch to rise, and continue to perform closed-loop control on the rotational speed of the generator;

determining whether the difference between the target rotational speed of the generator and the rotational speed of the input shaft is continuously smaller than a preset difference;

If the difference between the target rotational speed of the generator and the rotational speed of the input shaft is continuously smaller than the preset difference, it is determined that the rotational speed of the generator satisfies the second preset condition.

Further, the oil pressure control stage includes an oil filling stage and a torque exchange stage, and the oil pressure of the disengaging clutch and the engaging clutch is controlled until the first preset condition is satisfied, including:

In the oil filling stage, the oil pressure of the separating clutch is controlled to drop, and the engaging clutch is controlled to be filled with oil, so that the oil pressures of the separating clutch and the engaging clutch meet the third preset condition, so that the entry into the the torque exchange phase;

In the torque exchange stage, the oil pressure of the engagement clutch is kept unchanged, and the oil pressure of the separation clutch is controlled to decrease, so as to determine whether the oil pressure of the separation clutch is a preset oil pressure;

If the oil pressure of the separation clutch is the preset oil pressure, it is determined that the first preset condition is satisfied.

Further, after determining whether the oil pressure of the separation clutch is a preset oil pressure, the method further includes:

If the oil pressure of the separation clutch is not the preset oil pressure, determining whether the duration of entering the torque exchange phase is greater than the preset duration;

If the duration of entering the torque exchange phase is greater than or equal to the preset duration, it is determined that the first preset condition is satisfied.

Further, the controlling of the oil pressure of the separation clutch to drop, and the control of the coupling clutch to be filled with oil, so that the oil pressures of the separation clutch and the coupling clutch satisfy a third preset condition, include:

Controlling the oil pressure of the separation clutch to decrease according to the first preset curve until the oil pressure of the separation clutch is less than the half engagement point;

Control the engagement clutch to charge oil according to the second preset curve until the oil pressure of the engagement clutch is less than the half engagement point;

determining whether the oil pressure of the disengaging clutch and the engaging clutch is stable;

If the oil pressures of the separation clutch and the engagement clutch are stable, it is determined that the oil pressures of the separation clutch and the engagement clutch satisfy the third preset condition.

Further, in the torque exchange stage, maintaining the oil pressure of the engaging clutch unchanged, and controlling the oil pressure of the separating clutch to decrease, including:

determining a preset drop slope of the disconnect clutch in the torque exchange phase;

In the torque exchange stage, the oil pressure of the disengaging clutch is controlled to decrease according to the preset decreasing slope, and the oil pressure of the engaging clutch is kept unchanged.

A vehicle upshift control device, comprising:

The first control module is configured to control the oil pressure of the separation clutch and the engagement clutch in the oil pressure control stage when it is determined that the vehicle needs to be upshifted to the hybrid second gear without power until a first preset conditions to enter the speed regulation stage;

The second control module is configured to coordinately control the torque of the engine, the rotational speed of the generator, and the oil pressure of the separating clutch and the engaging clutch in the speed regulation stage until the second preset condition is met, so as to enter the lock-up stage;

A third control module is configured to control the oil pressure of the engaging clutch to increase during the locking phase, and lock the engaging clutch when the engaging clutch is engaged.

A vehicle upshift control device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, the processor implementing the above-mentioned vehicle upshift control method when the computer program is executed A step of.

A readable storage medium storing a computer program, when the computer program is executed by a processor, implements the steps of the above-mentioned vehicle upshift control method.

In one solution provided by the above-mentioned vehicle upshift control method, device and storage medium, when it is determined that the vehicle needs to be upshifted to the second hybrid gear without power, the engine, the generator, the separation clutch and the coupling clutch are controlled according to the following stages , including: in the oil pressure control stage, control the oil pressure of the separation clutch and the coupling clutch until the first preset condition is met, so as to enter the speed regulation stage; in the speed regulation stage, the torque of the engine, the speed of the generator, the speed of the The oil pressures of the separating clutch and the engaging clutch are coordinated and controlled until the second preset condition is met, so as to enter the locking stage; in the locking stage, the oil pressure of the engaging clutch is controlled to rise, and the engaging clutch is locked when the engaging clutch is engaged; In the present invention, through the coordinated control of the engine, the motor and the two clutches, the process of switching the vehicle to the second gear of the hybrid vehicle is precisely controlled, and the smooth output torque of the hybrid vehicle is ensured to the greatest extent by controlling the oil pressure of the clutch. It ensures good drivability when the vehicle mode is switched.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the following briefly introduces the drawings that are used in the description of the embodiments of the present invention. Obviously, the drawings in the following description are only some embodiments of the present invention. , for those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative labor.

1 is a schematic structural diagram of an electromechanical coupling system in an embodiment of the present invention;

FIG. 2 is a schematic diagram of the power transmission of the electromechanical coupling system when the first gear is mixed in an embodiment of the present invention;

3 is a schematic diagram of the power transmission of the electromechanical coupling system in the hybrid second gear according to an embodiment of the present invention;

4 is a schematic flowchart of a vehicle upshift control method according to an embodiment of the present invention;

5 is a schematic diagram of changes of each structure of the electrical coupling system at different stages in an embodiment of the present invention;

6 is a schematic structural diagram of a vehicle upshift control device in an embodiment of the present invention;

FIG. 7 is another structural schematic diagram of a vehicle upshift control device according to an embodiment of the present invention.

Among them, each reference mark in the figure is:

1-engine; 2-first clutch; 3-input shaft; 4-sun gear; 5-planet carrier; 6-ring gear; 7-brake; 8-second clutch; 9-first gear; 10-second Gear; 11-generator; 12-intermediate shaft; 13-third gear; 14-fourth gear; 15-fifth gear; 16-drive motor; 17-sixth gear; 18-differential.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings 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 of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

The vehicle upshift control method provided in the embodiments of the present invention can be applied to a vehicle control system of a hybrid vehicle, where the hybrid vehicle includes an electromechanical coupling system and a vehicle upshift control device, wherein the electromechanical coupling system and the vehicle upshift control device can communicate via the bus.

Wherein, as shown in FIG. 1, the hybrid electromechanical coupling system includes an engine 1, a first clutch (C ₀ ) 2, an input shaft 3, a planetary row (including a sun gear 4, a planetary carrier 5 and a ring gear 6), a brake ( B) 7, the second clutch (C ₁ ) 8, the first gear 9, the second gear 10, the generator 11, the intermediate shaft 12, the third gear 13, the fourth gear 14, the fifth gear 15, the drive motor 16, The sixth gear 17 and the differential 18 . The engine 1 is connected to the ring gear 6 through the first clutch 2 , the engine 1 and the generator 11 are connected to the second gear 10 through the first gear 9 ; the driving motor 16 is connected to the power of the engine 1 and the generator 11 through the fifth gear 15 . coupled output.

In this embodiment, the electromechanical coupling system of the hybrid vehicle includes a brake 7, a first clutch 2 and a second clutch 8, wherein the brake 7 is used to brake the sun gear 4, and the first clutch 2 is used to control whether the power of the engine is output , in order to realize the switching between the pure electric mode and the hybrid mode, the function of the second clutch 8 and the brake 7 is to realize the two gears of the engine in combination with the planetary row.

When the brake 7 is engaged, the power of the engine is transmitted to the planet carrier 5 through the ring gear 6, then to the third gear 13 through the planet carrier 5, then to the intermediate shaft 12, and then to the sixth gear 17 through the fourth gear 14 , and finally to the differential 18 and the wheel end of the hybrid vehicle, which is the first gear of the engine.

When the second clutch 8 is engaged, the sun gear 4 , the planet carrier 5 and the ring gear 6 of the planetary row rotate as a whole, and are fixed as a whole. The speed ratio is 1 and is transmitted to the first gear 11 through the planet carrier 5 and then to the intermediate shaft. 10, and then transmitted to the fourth gear 15 through the second gear 12, and finally to the differential 16 and the wheel end of the hybrid vehicle, which is the second gear of the engine at this time.

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

The electromechanical coupling system of this embodiment includes three power sources: the engine 1, the generator 11, and the drive motor 16, that is, the working state of the generator 11 includes two states: power generation and driving; the electromechanical coupling system can simultaneously perform a variety of working modes ( Switching of multiple gears), the working modes of the electromechanical coupling system include a single-motor pure electric mode with one gear, a dual-motor pure electric mode with two gears, a series range extension mode, and two hybrid drive modes (hybrid drive mode). mode and hybrid mode), as well as various working modes such as braking energy recovery, parking power generation, etc.

Among them, the control requirements of each structure in the above-mentioned various working modes are embodied as follows:

In the electromechanical coupling system, when the hybrid vehicle is in the first hybrid gear (hybrid mode 1), the brake 7 is locked, the first clutch 2 is engaged, and the second clutch 8 is opened. The power transmission route in the electromechanical coupling system is shown in the figure 2; when the hybrid vehicle is in hybrid second gear (hybrid mode 2), the brake 7 is opened, the first clutch 2 is engaged, the second clutch 8 is engaged, and the power transmission route in the electromechanical coupling system is shown in Figure 3 , among which, the dotted line in Figure 2 and Figure 3 is the power transmission route, and the arrow is the power transmission direction. When the hybrid vehicle switches from the first gear to the second gear, that is, from the hybrid mode 1 to the hybrid mode 2, the state of the brake 7 and the second clutch 8 will change, thereby causing the torque of other structures Or the speed changes rapidly, which in turn affects the wheel-end torque, resulting in an unsmooth mode switching process. In order to reduce the influence of the fluctuation of shafting torque and rotational speed on the wheel-end torque during the switching process, it is necessary to precisely control the clutch, engine and engine during the switching process, so as to improve the smoothness of the mode switching process, thereby improving the driving experience of hybrid vehicles. comfort.

In this embodiment, when it is determined that the vehicle needs to be upshifted to the hybrid second gear without power, the engine, the generator, the separation clutch and the engagement clutch are controlled according to the following stages: in the oil pressure control stage, the separation clutch and the engagement clutch are controlled The oil pressure is controlled until the first preset condition is met, so as to enter the speed regulation stage; in the speed regulation stage, the torque of the engine, the rotational speed of the generator, the oil pressure of the disconnecting clutch and the coupling clutch are coordinated and controlled until the first preset condition is satisfied. Two preset conditions to enter the lock-up stage; in the lock-up stage, control the oil pressure of the coupling clutch to rise, and lock the coupling clutch when the coupling clutch is engaged; through the coordinated control of the engine, the generator and the two clutches, the vehicle is controlled The mode switching process of switching to the hybrid second gear is precisely controlled, and the smoothness of the output torque of the hybrid vehicle is ensured to the greatest extent through the control of the clutch oil pressure, which ensures the good drivability of the vehicle when the mode is switched.

In this embodiment, the vehicle control system including the electromechanical coupling system and the vehicle upshift control device is only illustrative, and in other embodiments, the vehicle control system may also include other structures, which will not be repeated here.

In one embodiment, as shown in FIG. 4 , a vehicle upshift control method is provided, and the method is applied to a vehicle upshift control device as an example for illustration. When it is determined that the vehicle needs to be upshifted to a hybrid second gear without power , the engine, generator, disconnect clutch and engagement clutch are controlled according to the following stages, including the following steps:

S10: In the oil pressure control stage, the oil pressure of the separation clutch and the coupling clutch is controlled until the first preset condition is satisfied, so as to enter the speed regulation stage.

When the vehicle needs to perform an upshift operation from the hybrid first gear to the hybrid second gear, the input shaft torque of the engine needs to be determined. If the input shaft torque is less than the preset torque, it is determined that the vehicle needs to perform a powerless upshift to switch between Hybrid second gear, wherein the preset torque is the input shaft torque pre-calibrated according to the characteristics of the electromechanical hybrid system.

Among them, when it is determined that the vehicle needs to be upshifted to the second hybrid gear without power, the control of the engine, the generator, the separation clutch and the coupling clutch needs to be controlled according to the oil pressure control stage, the speed regulation stage and the lock stage, so as to Reduce the frustration of the vehicle when switching from hybrid first gear to hybrid second gear.

The release clutch is the brake B in the electromechanical coupling system in FIG. 1 , and the coupling clutch is the second clutch C _{1 in the electromechanical coupling system in FIG. 1} . In the oil pressure control stage, it is necessary to precisely control the oil pressure of the separation clutch and the coupling clutch until the first preset condition is met, and then enter the speed regulation stage. Among them, in the oil pressure control stage, it is necessary to complete the torque exchange between the disengaging clutch and the engaging clutch.

It can be seen from Fig. 2 and Fig. 3 that when the vehicle is switched from hybrid first gear to hybrid second gear, the torque exchange between the disengaging clutch B and the engaging clutch _C1 needs to be completed. Therefore, in the oil pressure control stage, it is necessary to The oil pressure of the disconnecting clutch B and the coupling clutch _C1 is precisely controlled. At the beginning of the oil pressure control stage, it is necessary to control the oil pressure of the disconnecting clutch B to drop, and the coupling clutch _C1 is charged with oil, and the oil pressure in the standby electric coupling system needs to be controlled. After stabilization, it is also necessary to perform open-loop control on the oil pressure of the separation clutch B and the coupling clutch C ₁ to realize the synchronous slip control of the separation clutch B and the coupling clutch C ₁ , and complete the separation between the coupling clutch C ₁ and the coupling clutch B. Torque exchange, and then enter the speed regulation stage.

S20: In the speed regulation stage, coordinately control the torque of the engine, the rotational speed of the generator, and the oil pressure of the disengaging clutch and the engaging clutch until the second preset condition is satisfied, so as to enter the locking stage.

In the speed regulation stage, it is necessary to coordinately control the torque of the engine, the speed of the generator, the oil pressure of the separation clutch B and the coupling clutch _C1 , so that the input shaft speed of the generator can be increased from the speed ratio speed of the first hybrid gear to the hybrid speed of the first gear. The speed ratio speed of the second gear is determined, and when the speed of the generator reaches a certain value, it is determined that the second preset condition is satisfied, and the lock stage can be entered at this time.

Among them, in the speed regulation stage, it is necessary to first slowly reduce the oil pressure of the separation clutch B to 0, and then maintain the oil pressure of the separation clutch B at 0 unchanged.

S30: In the lock-up stage, the oil pressure of the engagement clutch is controlled to rise, and the engagement clutch is locked when the engagement clutch is engaged.

In the lock-up stage, it is necessary to control the oil pressure of the coupling clutch C ₁ to rise rapidly to meet the requirements of the hybrid second gear. At this time, the coupling clutch C 1 needs to be locked and the coupling clutch C ₁ needs to be locked to complete the gear shift, that is, the transition from the hybrid to the first gear is completed. The mode switching process from gear mode to hybrid second gear mode. During the mode switching process, the smoothness of the output torque of the electromechanical coupling system of the hybrid vehicle is ensured to the greatest extent through the oil pressure control of the two clutches, and the good drivability when the vehicle mode is switched is ensured.

In this embodiment, when it is determined that the vehicle needs to be upshifted to the second hybrid gear without power, the engine, the generator, the separation clutch and the engagement clutch are controlled according to the following stages, including: in the oil pressure control stage, the separation clutch and the coupling clutch are controlled. Control the oil pressure in conjunction with the clutch until the first preset condition is met, so as to enter the speed regulation stage; in the speed regulation stage, the torque of the engine, the rotational speed of the generator, the oil pressure of the disconnecting clutch and the coupling clutch are coordinated and controlled until The second preset condition is met to enter the lock-up stage; in the lock-up stage, the oil pressure of the coupling clutch is controlled to rise, and when the coupling clutch is engaged, the coupling clutch is locked; The mode switching process of the vehicle switching to the hybrid second gear is precisely controlled, and the smoothness of the output torque of the hybrid vehicle is ensured to the greatest extent through the control of the clutch oil pressure, which ensures good drivability when the vehicle mode is switched.

In one embodiment, the speed regulation stage includes a first speed regulation stage and a second speed regulation stage. In step S20, the torque of the engine, the rotational speed of the generator, the oil pressure of the disconnecting clutch and the coupling clutch are coordinated and controlled until Satisfying the second preset condition specifically includes the following steps:

S21: In the first speed regulation stage, keep the torque of the engine and the oil pressure of the coupling clutch unchanged, control the oil pressure of the disconnecting clutch to drop to a preset value, and perform closed-loop control on the speed of the generator, so that the The input shaft speed meets the requirements of the hybrid second gear.

In this embodiment, the speed regulation stage is subdivided into the first speed regulation stage and the second speed regulation stage, which further refines the control process of shifting and improves the accuracy of the control of the engine, clutch and generator in the shifting process. .

Among them, in the first speed regulation stage, the torque of the engine and the oil pressure of the coupling clutch _C1 are kept unchanged, and the oil pressure of the separation clutch B is controlled to slowly drop to a preset value (the preset value is 0), and the generator The speed of the generator is closed-loop controlled, so that the input shaft speed of the generator increases from the speed of the first hybrid gear to the speed of the second hybrid gear, so as to meet the needs of the second hybrid gear.

Among them, since the powerless shifting is performed, the engine torque remains unchanged, and the electromechanical coupling system is too sensitive to the change of torque when the powerless shifting is performed. Therefore, it is necessary to minimize the change of oil pressure. At this time, the clutch C ₁ is engaged. The best oil pressure is not involved in speed regulation, and it is best to maintain stability, which can effectively reduce the frustration of the vehicle caused by excessive torque changes.

Among them, when the closed-loop control of the rotational speed of the generator is performed, the target rotational speed of the closed-loop control of the engine needs to be determined, and then the rotational speed of the generator is adjusted according to the rotational speed difference between the actual rotational speed of the generator and the target rotational speed, so that the generator The input shaft speed rises to the speed of the hybrid first gear. The target rotational speed is a pre-calibrated generator rotational speed that meets the requirements of the hybrid second gear.

S22: Determine whether the rotational speed of the generator is a preset rotational speed.

During the closed-loop control of the rotational speed of the generator, it is determined in real time whether the rotational speed of the generator is a preset rotational speed to determine whether to enter the second speed regulation stage.

S23: If the rotational speed of the generator is the preset rotational speed, enter the second speed regulation stage, and fine-tune the rotational speed of the generator in the second speed regulation stage until the second preset condition is satisfied.

After determining whether the rotational speed of the generator is the preset rotational speed, if the rotational speed of the generator is the preset rotational speed, enter the second speed regulation stage. The rotational speed of the generator is fine-tuned until the difference between the target rotational speed of the generator closed-loop control and the rotational speed of the input shaft reaches the preset value, it is determined that the second preset condition is satisfied, the speed regulation process is completed, and the lock-up stage is entered.

After determining whether the speed of the generator is the preset speed, if the speed of the generator is not the preset speed, the closed-loop control of the generator is continued, so that the speed of the generator reaches the preset speed, and the second speed regulation is triggered. stage conditions.

In this embodiment, in the first speed regulation stage, by keeping the torque of the engine and the oil pressure of the engaging clutch unchanged, and controlling the oil pressure of the disconnecting clutch to drop to a preset value, and performing closed-loop control on the speed of the generator to Make the rotation speed of the input shaft meet the requirements of the hybrid second gear, and determine whether the rotation speed of the generator is the preset rotation speed. The speed of the engine is fine-tuned until the second preset condition is met, the speed control stage is refined into the first speed control stage and the second speed control stage, and the torque of the engine, the speed of the generator, the clutch release and the coupling are clarified. The oil pressure of the clutch is coordinated and controlled until the second preset condition is met. In the first speed regulation stage, the engine and the clutch are not involved in the regulation, which reduces the effect of the torque change of the engine and the oil pressure change of the clutch on the torque of the generator. Influence, to ensure the accuracy of control.

In an embodiment, in step S23, that is, in the second speed regulation stage, the rotational speed of the generator is fine-tuned until the second preset condition is met, which specifically includes the following steps:

S231: In the second speed regulation stage, keep the oil pressure of the disengaging clutch unchanged, control the oil pressure of the engaging clutch to rise, and continue to perform closed-loop control on the rotational speed of the generator.

In the second speed regulation stage, it is necessary to keep the oil pressure of the disengaging clutch unchanged, control the oil pressure of the coupling clutch to rise slowly, and continue to perform closed-loop control on the speed of the generator, so that the input shaft speed of the generator is consistent with the target of the generator. The gap between the revs is getting smaller and smaller.

S232: Determine whether the difference between the target rotational speed of the generator and the rotational speed of the input shaft is continuously smaller than the preset difference.

When the closed-loop control of the speed of the generator is performed, it is necessary to determine in real time whether the difference between the target speed of the generator and the speed of the input shaft is continuously smaller than the preset difference, that is, the speed between the target speed of the generator and the speed of the input shaft Whether the error is formed as a stable deviation is used to judge whether the speed regulation is completed.

S233: If the difference between the target rotational speed of the generator and the rotational speed of the input shaft is continuously smaller than the preset difference, determine that the rotational speed of the generator satisfies the second preset condition.

After determining whether the difference between the target rotational speed of the generator and the rotational speed of the input shaft is continuously smaller than the preset difference, if the difference between the target rotational speed of the generator and the rotational speed of the input shaft is continuously smaller than the preset difference, that is, the generator If a small and stable deviation is formed between the target rotational speed of the generator and the rotational speed of the input shaft, it is determined that the rotational speed of the generator satisfies the second preset condition. At this time, the speed regulation of the generator is completed, and the lock-up phase can be entered.

In this embodiment, in the second speed regulation stage, by keeping the oil pressure of the disengaging clutch unchanged, controlling the oil pressure of the engaging clutch to rise, and continuing to perform closed-loop control on the rotational speed of the generator, the target rotational speed of the generator and the input input are determined. Whether the difference between the shaft speeds is continuously smaller than the preset difference, if the difference between the target speed of the generator and the input shaft speed is continuously smaller than the preset difference, it is determined that the speed of the generator meets the second preset condition, The specific process of fine-tuning the speed of the generator in the second speed regulation stage is refined until the second preset condition is met, and the next stage is entered after the target speed of the generator and the speed of the input shaft form a stable deviation to ensure that The control is accurate and stable.

In one embodiment, the oil pressure control stage includes an oil filling stage and a torque exchange stage. In step S10, the oil pressure of the disconnecting clutch and the engaging clutch is controlled until the first preset condition is met, which specifically includes the following steps:

S11: In the oil filling stage, the oil pressure of the separation clutch is controlled to drop, and the coupling clutch is controlled to be filled with oil, so that the oil pressures of the separation clutch and the coupling clutch meet the third preset condition, so as to enter the torque exchange stage.

In the oil filling stage, the oil pressure of the separation clutch B is controlled to drop, and the coupling clutch _C1 is controlled to be charged with oil, so that the oil pressure of the separation clutch B and the coupling clutch _C1 is stabilized to meet the third preset condition, thereby triggering the entry torque Conditions for the exchange phase. Among them, in the oil filling stage, it is necessary to control the oil pressure of the separation clutch B to drop below the half-engagement (Kiss Point, KP) point, and wait to jump to the next stage, that is, wait to jump into the torque exchange stage; and control the engagement clutch C ₁ Oil charging is performed so that the hydraulic pressure of the engagement clutch _C1 rises to below the KP point, and after the hydraulic pressure of the engagement clutch _C1 is stabilized, the torque exchange phase is entered.

S12: In the torque exchange stage, keep the oil pressure of the coupling clutch unchanged, and control the oil pressure of the separation clutch to drop, so as to determine whether the oil pressure of the separation clutch is the preset oil pressure.

Since the oil pressure of the disconnect clutch B is in a falling state, the preset oil pressure is less than the KP point.

S13: If the oil pressure of the separation clutch is the preset oil pressure, it is determined that the first preset condition is satisfied.

In the torque exchange stage, keep the oil pressure of the coupling clutch _C1 unchanged, and control the oil pressure of the disengaging clutch B to drop slowly from the end of the oil filling stage to reduce the fluctuation of the oil pressure, thereby ensuring the smoothness of shifting. In the process of controlling the oil pressure of the separation clutch B to drop slowly, it is necessary to determine in real time whether the oil pressure of the separation clutch B is the preset oil pressure. If the oil pressure of the separation clutch B is the preset oil pressure, it is determined that the first preset oil pressure is satisfied condition, which triggers the condition to enter the speed regulation stage.

Among them, keeping the oil pressure of the coupling clutch _C1 unchanged can prevent the vehicle from requiring power in the process of shifting gears, and switch other gears.

In this embodiment, in the oil filling stage, the oil pressure of the separation clutch is controlled to drop, and the coupling clutch is controlled to be filled with oil, so that the oil pressures of the separation clutch and coupling clutch meet the third preset condition, so as to enter the torque exchange stage; In the torque exchange stage, keep the oil pressure of the coupling clutch unchanged, and control the oil pressure of the separation clutch to decrease to determine whether the oil pressure of the separation clutch is the preset oil pressure, if the oil pressure of the separation clutch is the preset oil pressure, then determine When the first preset condition is met, the oil pressure control stage is refined into the oil filling stage and the torque exchange stage, and the specific process of controlling the oil pressure of the disengaging clutch and the engaging clutch until the first preset condition is met is defined. The oil pressure change combined with the clutch is subdivided into the oil filling stage and the torque exchange stage, which ensures the accuracy of regulation and thus the smoothness of vehicle shifting.

In one embodiment, after step S12, that is, after determining whether the oil pressure of the disconnecting clutch is the preset oil pressure, the method further specifically includes the following steps:

S14: If the oil pressure of the separation clutch is not the preset oil pressure, determine whether the duration of entering the torque exchange phase is greater than the preset duration.

S15: If the duration of entering the torque exchange phase is greater than or equal to the preset duration, it is determined that the first preset condition is satisfied.

In the process of controlling the oil pressure of the separation clutch B to drop slowly, it is necessary to determine whether the oil pressure of the separation clutch B is the preset oil pressure in real time. If the oil pressure of the separation clutch B is not the preset oil pressure, it is necessary to determine whether the torque exchange Whether the duration of the stage is greater than the preset duration, and if the duration of entering the torque exchange stage is greater than or equal to the preset duration, it is determined that the first preset condition is met, and the first preset condition is determined to be met, and the condition for entering the speed regulation stage is triggered; If the duration of the torque exchange phase is less than the preset duration, the first preset condition is determined to be satisfied when the duration of entering the torque exchange phase is equal to the preset duration, or the oil pressure of the disconnect clutch B is the preset oil pressure.

In this embodiment, after determining whether the oil pressure of the separation clutch B is the preset oil pressure, if the oil pressure of the separation clutch B is not the preset oil pressure, it is determined whether the duration of entering the torque exchange stage is longer than the preset duration, and if the If the duration of the torque exchange phase is greater than or equal to the preset duration, it is determined that the first preset condition is met, which avoids the situation that the oil pressure of the disconnecting clutch B drops too slowly and cannot be reduced to the preset oil pressure for a long time, and reduces the long time of the vehicle. The possibility of power interruption in the torque exchange stage further ensures the stability of the shifting process.

In one embodiment, in step S11, the oil pressure of the release clutch is decreased, and the connection clutch is controlled to be filled with oil, so that the oil pressure of the release clutch and the connection clutch meet the third preset condition, which specifically includes the following steps:

S111: Control the oil pressure of the separation clutch to decrease according to the first preset curve until the oil pressure of the separation clutch is less than the half-engagement point.

S112: Control the engagement clutch to charge oil according to the second preset curve until the oil pressure of the engagement clutch is less than the half engagement point.

S113: Determine whether the oil pressure of the disconnecting clutch and the engaging clutch is stable.

S114: If the oil pressures of the disengaging clutch and the engaging clutch are stable, it is determined that the oil pressures of the disengaging clutch and the engaging clutch satisfy the third preset condition.

In the oil filling stage, the oil pressure of the separating clutch B is controlled to drop according to the first preset curve. At this time, it is a process of no-power upshifting. The input shaft torque of the generator is small, and it can even be considered that the input shaft has no torque, so it needs to be lowered to The oil pressure of the separation clutch B is lower than the half-engagement point, so that the torque exchange cannot be performed, that is, the oil pressure of the separation clutch B is below the KP point; and the coupling clutch _C1 is controlled according to the second preset curve to charge oil until the coupling clutch _C1 is engaged. The oil pressure of the clutch C1 is less than the half-joint point, that is, the oil pressure of the joint clutch _C1 is below the KP point, so that the torque transmission between the clutches cannot be carried out; at the same time, it is also necessary to determine in real time whether the oil pressure of the separation clutch and the joint clutch is stable. When the oil pressures of the clutch and the engaging clutch are stable, it is determined that the oil pressures of the disengaging clutch and the engaging clutch satisfy the third preset condition. The first preset curve and the second preset curve are pre-calibrated curves.

In this embodiment, the oil pressure of the separation clutch is controlled to drop according to the first preset curve until the oil pressure of the separation clutch is less than the half-engagement point, and the coupling clutch is controlled to be filled with oil according to the second preset curve until the oil pressure of the coupling clutch is less than At the semi-joint point, it is determined whether the oil pressure of the separation clutch and the coupling clutch is stable. If the oil pressure of the separation clutch and the coupling clutch is stable, it is determined that the oil pressure of the separation clutch and the coupling clutch meets the third preset condition, and the control of the separation clutch is clarified. The oil pressure drops, and the coupling clutch is controlled to be filled with oil, so that the oil pressures of the disengaging clutch and the coupling clutch meet the third preset condition, which provides a basis for controlling the oil pressure of the clutch in the oil filling stage.

In one embodiment, in step S12, that is, in the torque exchange stage, the oil pressure of the engaging clutch is kept constant, and the oil pressure of the disengaging clutch is controlled to decrease, which specifically includes the following steps:

S121: Determine a preset descending slope of the disengaging clutch in the torque exchange phase;

S122: In the torque exchange stage, control the oil pressure of the disengaging clutch to decrease according to the preset decreasing slope, and keep the oil pressure of the engaging clutch unchanged.

First determine the preset descending slope of the separation clutch in the torque exchange phase, wherein the preset descending slope is a pre-calibrated slope. The oil pressure does not change.

In this embodiment, by determining the preset descending slope of the separation clutch in the torque exchange stage, in the torque exchange stage, the oil pressure of the separation clutch is controlled to decrease according to the preset descending slope, and the oil pressure of the engaging clutch is kept unchanged, it is clear that In the torque exchange stage, the specific process of keeping the oil pressure of the engaging clutch unchanged and controlling the oil pressure drop of the disengaging clutch provides the basis for the clutch oil pressure control in the torque exchange stage.

According to the steps in the above embodiment, in the shifting process (unit: %) of switching the vehicle from the first hybrid gear to the second hybrid gear, the engine, the generator and the two clutches (the separation clutch B and the clutch are controlled in %). In combination with clutch C ₁ ), according to the oil filling stage (Fill)-torque exchange stage (Torque Phase)-first speed regulation stage (Speed Phase)-second speed regulation stage (ie fine-tuning stage, Lockup1)-Lockup2 (lockup stage) ) five stages of action control, and the specific control methods in each stage are different, including:

1) Fill: drop the oil pressure section of the disengaging clutch B below the KP point, and drop it according to the first preset curve (the oil pressure curve B in FIG. 5 ); combine the clutch C ₁ according to the second preset curve ( Fill the oil with oil as shown in the C1 oil pressure curve in Figure 5, and jump to the next stage after the oil pressure is stable;

2) Torque Phase: The oil pressure of the coupling clutch C ₁ remains unchanged, and the oil pressure of the separation clutch B is controlled to continue to decrease from the end point of the previous stage according to the preset falling slope, until the oil pressure of the separation clutch B triggers the preset oil pressure, jump to the next stage;

3) Speed Phase: Control the oil pressure of the separation clutch B to continue to drop to 0, and control the coupling clutch _C1 to keep the oil pressure unchanged, and the engine torque to remain unchanged, and control the speed n _EM1 of the generator EM1 to perform closed-loop control to realize power generation. The speed of the input shaft of the engine increases from the speed ratio of the first gear to the speed ratio of the second gear. When the shift process triggers the threshold, it enters the next stage;

4) Lockup1: Control the oil pressure of the disengaging clutch B to maintain 0 unchanged, and control the coupling clutch _C1 to slightly increase, and the speed n _EM1 of the generator EM1 continues to perform closed-loop adjustment, when the input shaft speed and the target speed of the engine After a stable deviation is formed , jump to the next stage;

5) Lockup2: Quickly increase the oil pressure of the clutch _C1 , and lock it to complete the shift.

For example, during the shifting process of switching the vehicle's electromechanical coupling system from the first hybrid gear (current gear) to entering the second hybrid gear (target gear), the engine speed n _ICE , the generator speed n _EM1 , the ring gear input Speed n _input , engine torque T _ICE , generator torque T _EM1 , transmission input torque (excluding drive motor EM2 ), oil pressure changes of disconnect clutch B and engagement clutch C ₁ , clutch state (including disconnect clutch state off-going clutch state and on-going clutch state), etc., the change curves in the above five stages are shown in Figure 5. Through the coordinated control of the speed and torque of the engine, generator, main clutch, and shift clutch, the precise control of the process from the first gear to the second gear of the hybrid is realized, and the oil pressure control of the main clutch ensures the electromechanical coupling system to the greatest extent. The smoothness of the output torque ensures good drivability when the vehicle mode is switched.

It should be understood that the size of the sequence numbers of the steps in the above embodiments does not mean the sequence of execution, and the execution sequence of each process should be determined by its functions and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.

In one embodiment, a vehicle upshift control device is provided, and the vehicle upshift control device corresponds one-to-one with the vehicle upshift control method in the above-mentioned embodiment. As shown in FIG. 6 , the vehicle upshift control device includes a first control module 601 , a second control module 602 and a third control module 603 . The detailed description of each functional module is as follows:

The first control module 601 is used for, when it is determined that the vehicle needs to be upshifted to the hybrid second gear without power, in the oil pressure control stage, control the oil pressure of the disconnecting clutch and the engaging clutch until the first preset condition is satisfied, so as to enter the speed regulation stage;

A second control module 602, configured to coordinately control the engine, the generator, the separating clutch and the engaging clutch during the speed regulation phase until a second preset condition is met, so as to enter the lock-up phase;

The third control module 603 is configured to control the oil pressure of the engaging clutch to increase during the locking phase, and lock the engaging clutch when the engaging clutch is engaged.

Further, the speed regulation stage includes a first speed regulation stage and a second speed regulation stage, and the second control module 602 is specifically used for:

In the first speed regulation stage, the torque of the engine and the oil pressure of the engagement clutch are kept unchanged, the oil pressure of the release clutch is controlled to drop to a preset value, and the rotational speed of the generator is adjusted. closed-loop control, so that the input shaft speed of the generator meets the requirements of the hybrid second gear;

determining whether the rotational speed of the generator is a preset rotational speed;

If the rotational speed of the generator is the preset rotational speed, the second speed regulation stage is entered, and the rotational speed of the generator is fine-tuned in the second speed regulation stage until the second predetermined speed is satisfied. Set conditions.

Further, the second control module 602 is further used for:

In the second speed regulation stage, keep the oil pressure of the separation clutch unchanged, control the oil pressure of the engagement clutch to rise, and continue to perform closed-loop control on the rotational speed of the generator;

determining whether the difference between the target rotational speed of the generator and the rotational speed of the input shaft is continuously smaller than a preset difference;

If the difference between the target rotational speed of the generator and the rotational speed of the input shaft is continuously smaller than the preset difference, it is determined that the rotational speed of the generator satisfies the second preset condition.

Further, the oil pressure control stage includes an oil filling stage and a torque exchange stage, and the first control module 601 is specifically used for:

In the oil filling stage, the oil pressure of the separating clutch is controlled to drop, and the engaging clutch is controlled to be filled with oil, so that the oil pressures of the separating clutch and the engaging clutch meet the third preset condition, so that the entry into the the torque exchange phase;

In the torque exchange stage, the oil pressure of the engagement clutch is kept unchanged, and the oil pressure of the separation clutch is controlled to decrease, so as to determine whether the oil pressure of the separation clutch is a preset oil pressure;

If the oil pressure of the separation clutch is the preset oil pressure, it is determined that the first preset condition is satisfied.

Further, after determining whether the oil pressure of the separation clutch is the preset oil pressure, the first control module 601 is further used for:

If the oil pressure of the separation clutch is not the preset oil pressure, determining whether the duration of entering the torque exchange phase is greater than the preset duration;

If the duration of entering the torque exchange phase is greater than or equal to the preset duration, it is determined that the first preset condition is satisfied.

Further, the first control module 601 is further used for:

Controlling the oil pressure of the separation clutch to decrease according to the first preset curve until the oil pressure of the separation clutch is less than the half engagement point;

Control the engagement clutch to charge oil according to the second preset curve until the oil pressure of the engagement clutch is less than the half engagement point;

determining whether the oil pressure of the disengaging clutch and the engaging clutch is stable;

If the oil pressures of the separation clutch and the engagement clutch are stable, it is determined that the oil pressures of the separation clutch and the engagement clutch satisfy the third preset condition.

Further, the first control module 601 is further used for:

determining a preset drop slope of the disconnect clutch in the torque exchange phase;

In the torque exchange stage, the oil pressure of the disengaging clutch is controlled to decrease according to the preset decreasing slope, and the oil pressure of the engaging clutch is kept unchanged.

For the specific definition of the vehicle upshift control device, reference may be made to the above definition of the vehicle upshift control method, which will not be repeated here. Each module in the above-mentioned vehicle upshift control device may be implemented in whole or in part by software, hardware and combinations thereof. The above modules can be embedded in or independent of the processor in the computer device in the form of hardware, or stored in the memory in the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above modules.

In one embodiment, as shown in FIG. 7 , a vehicle upshift control device is provided, and the vehicle upshift control device includes a processor and a memory connected through a system bus. Among them, the processor of the vehicle upshift control device is used to provide calculation and control capabilities. The memory of the computer device includes a non-volatile storage medium, an internal memory. The nonvolatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the execution of the operating system and computer programs in the non-volatile storage medium. The computer program, when executed by the processor, implements a vehicle upshift control method.

In one embodiment, a vehicle upshift control device is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor implements the above-mentioned vehicle upshift control method when the computer program is executed. A step of.

In one embodiment, a readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, implements the steps of the above-mentioned vehicle upshift control method.

Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be implemented by instructing relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage In the medium, when the computer program is executed, it may include the processes of the above-mentioned method embodiments. Wherein, any reference to memory, storage, database or other medium used in the various embodiments provided in this application may include non-volatile and/or volatile memory. Nonvolatile memory may include read only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in various forms such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous chain Road (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

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. Module completion, that is, dividing the internal structure of the device into different functional units or modules to complete all or part of the functions described above.

The above-mentioned embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it is still possible to implement the foregoing implementations. The technical solutions described in the examples are modified, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the within the protection scope of the present invention.

Claims (10)

1. A vehicle upshift control method, characterized in that, when it is determined that a vehicle needs to be upshifted to a hybrid second gear without power, the method comprises: In the oil pressure control stage, the oil pressure of the separation clutch and the coupling clutch is controlled until the first preset condition is satisfied, so as to enter the speed regulation stage; In the speed regulation stage, coordinated control is performed on the torque of the engine, the rotational speed of the generator, and the oil pressure of the separation clutch and the coupling clutch until the second preset condition is satisfied, so as to enter the lock stage; In the lock-up phase, the oil pressure of the engagement clutch is controlled to increase, and the engagement clutch is locked when the engagement clutch is engaged. 2 . The vehicle upshift control method according to claim 1 , wherein the speed regulation stage includes a first speed regulation stage and a second speed regulation stage, the torque of the engine, the rotational speed of the generator, the The oil pressures of the disconnecting clutch and the engaging clutch are coordinated and controlled until the second preset condition is met, including: In the first speed regulation stage, the torque of the engine and the oil pressure of the engagement clutch are kept unchanged, the oil pressure of the release clutch is controlled to drop to a preset value, and the rotational speed of the generator is adjusted. closed-loop control, so that the input shaft speed of the generator meets the requirements of the hybrid second gear; determining whether the rotational speed of the generator is a preset rotational speed; If the rotational speed of the generator is the preset rotational speed, the second speed regulation stage is entered, and the rotational speed of the generator is fine-tuned in the second speed regulation stage until the second predetermined speed is satisfied. Set conditions. 3 . The vehicle upshift control method according to claim 2 , wherein the fine-tuning of the rotational speed of the generator in the second speed regulation stage until the second preset condition is satisfied, comprising: 3 . : In the second speed regulation stage, keep the oil pressure of the separation clutch unchanged, control the oil pressure of the engagement clutch to rise, and continue to perform closed-loop control on the rotational speed of the generator; determining whether the difference between the target rotational speed of the generator and the rotational speed of the input shaft is continuously smaller than a preset difference; If the difference between the target rotational speed of the generator and the rotational speed of the input shaft is continuously smaller than the preset difference, it is determined that the rotational speed of the generator satisfies the second preset condition. 4. The vehicle upshift control method according to any one of claims 1 to 3, wherein the oil pressure control stage includes an oil filling stage and a torque exchange stage, and the oil pressure of the disengaging clutch and the engaging clutch is Control until the first preset condition is met, including: In the oil filling stage, the oil pressure of the separating clutch is controlled to drop, and the engaging clutch is controlled to be filled with oil, so that the oil pressures of the separating clutch and the engaging clutch meet the third preset condition, so that the entry into the the torque exchange phase; In the torque exchange stage, the oil pressure of the engagement clutch is kept unchanged, and the oil pressure of the separation clutch is controlled to decrease, so as to determine whether the oil pressure of the separation clutch is a preset oil pressure; If the oil pressure of the separation clutch is the preset oil pressure, it is determined that the first preset condition is satisfied. 5 . The vehicle upshift control method according to claim 4 , wherein after determining whether the oil pressure of the disconnect clutch is a preset oil pressure, the method further comprises: 6 . If the oil pressure of the separation clutch is not the preset oil pressure, determining whether the duration of entering the torque exchange phase is greater than the preset duration; If the duration of entering the torque exchange phase is greater than or equal to the preset duration, it is determined that the first preset condition is satisfied. 6 . The vehicle upshift control method according to claim 4 , wherein the control of the oil pressure of the separation clutch to decrease, and the control of the engagement clutch to charge oil, so that the separation clutch and the The oil pressure of the engaged clutch satisfies the third preset condition, including: Controlling the oil pressure of the separation clutch to decrease according to the first preset curve until the oil pressure of the separation clutch is less than the half engagement point; Control the engagement clutch to be filled with oil according to a second preset curve until the oil pressure of the engagement clutch is less than the half engagement point; determining whether the oil pressure of the disengaging clutch and the engaging clutch is stable; If the oil pressures of the separation clutch and the engagement clutch are stable, it is determined that the oil pressures of the separation clutch and the engagement clutch satisfy the third preset condition. 7 . The vehicle upshift control method according to claim 4 , wherein, in the torque exchange stage, the oil pressure of the engagement clutch is kept constant, and the oil pressure of the release clutch is controlled to decrease, 8 . include: determining a preset drop slope of the disconnect clutch in the torque exchange phase; In the torque exchange stage, the oil pressure of the disengaging clutch is controlled to decrease according to the preset decreasing slope, and the oil pressure of the engaging clutch is kept unchanged. 8. A vehicle upshift control device, comprising: The first control module is used to control the oil pressure of the disengaging clutch and the engaging clutch in the oil pressure control stage when it is determined that the vehicle needs to be upshifted to the hybrid second gear without power until the first preset condition is satisfied, so as to enter the speed control stage; The second control module is configured to coordinately control the torque of the engine, the rotational speed of the generator, and the oil pressure of the separating clutch and the engaging clutch in the speed regulation stage until the second preset condition is met, so as to enter the lock-up stage; A third control module is configured to control the oil pressure of the engaging clutch to increase during the locking phase, and lock the engaging clutch when the engaging clutch is engaged. 9. A vehicle upshift control device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the computer program when the processor executes the computer program The steps of the vehicle upshift control method according to any one of claims 1 to 7. 10. A readable storage medium storing a computer program, wherein when the computer program is executed by a processor, the vehicle upshift control method according to any one of claims 1 to 7 is implemented A step of.

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