WO2022183836A1

WO2022183836A1 - Gear shifting method of hybrid power vehicle, controllers and vehicle

Info

Publication number: WO2022183836A1
Application number: PCT/CN2021/143782
Authority: WO
Inventors: 庹晓丰; 宋爱林; 李哲
Original assignee: 长城汽车股份有限公司
Priority date: 2021-03-02
Filing date: 2021-12-31
Publication date: 2022-09-09
Also published as: CN113954817B; CN113954817A

Abstract

The present invention relates to a gear shifting method of a hybrid power vehicle, controllers and a vehicle, and solves the technical problems that the abrasion of elements is aggravated in the gear shifting process and the elements bear a certain impact load due to the fact that the hybrid power vehicle is long in gear shifting time and unstable in gear shifting process. The method comprises: a vehicle controller sends a gear shifting request to a gearbox controller in a hybrid power vehicle, the gear shifting request comprising a target gear; the gearbox controller controls the two sides of a clutch according to the gear shifting request to generate a rotating speed difference, and sends a crankshaft torque control request to the vehicle controller; in the case of receiving the crankshaft torque control request, the vehicle controller controls, according to the crankshaft torque control request, an engine to reduce the crankshaft torque; the gearbox controller controls the torque of the clutch to be synchronously reduced in the process of reducing the crankshaft torque of the engine; and after the clutch is started, the gearbox controller performs a gear shifting operation according to the target gear.

Description

Shift method, controller and vehicle for hybrid vehicle

CROSS-REFERENCE TO RELATED APPLICATIONS

This disclosure claims the priority of a Chinese patent application with application number 202110232109.8 and titled "Shift Method, Controller and Vehicle for Hybrid Electric Vehicle" filed with the Chinese Patent Office on March 2, 2021, the entire contents of which are incorporated by reference in this disclosure.

technical field

The present disclosure relates to the field of hybrid power systems of new energy vehicles, and in particular, to a gear shifting method, a controller and a vehicle for a hybrid power vehicle.

Background technique

With the rapid development of new energy, new energy vehicles have also received more and more attention, and hybrid vehicles in new energy vehicles have become one of the important development directions. However, in the existing hybrid vehicle, the wear of the components increases due to the excessively long shifting time. During the shifting process, the instantaneous acceleration or deceleration will cause bumps and shocks, so that the components are subjected to shock loads during the shifting process.

SUMMARY OF THE INVENTION

The present disclosure aims to solve one of the technical problems in the related art at least to a certain extent.

Therefore, the first object of the present disclosure is to propose a gear shifting method for a hybrid vehicle, so as to solve the problem that the long gear shifting time and the unstable shifting process of the hybrid vehicle cause the elements to wear out during the gear shifting process, and the The technical problem of bearing a certain shock load.

The second objective of the present disclosure is to provide a vehicle controller.

A third object of the present disclosure is to propose a transmission controller.

A fourth object of the present disclosure is to propose a vehicle.

In order to achieve the above objective, an embodiment of the first aspect of the present disclosure provides a method for shifting gears of a hybrid vehicle, the hybrid vehicle includes a vehicle controller and a transmission controller, and the method includes:

The vehicle controller sends a shift request to the gearbox controller in the hybrid vehicle, where the shift request includes a target gear;

The transmission controller controls the two sides of the clutch to generate a rotational speed difference according to the shift request, and sends a crankshaft torque control request to the vehicle controller;

When receiving the crankshaft torque control request, the vehicle controller controls the engine to reduce the crankshaft torque according to the crankshaft torque control request;

the transmission controller controls the synchronous reduction of the torque of the clutch during the reduction of the crankshaft torque of the engine;

The transmission controller performs a shifting operation according to the target gear position after the clutch is turned on.

According to an embodiment of the present disclosure, after the clutch is turned on, the transmission controller performs a gear shifting operation according to the target gear, including:

When determining that the clutch is in a disengaged state, the transmission controller sends a crankshaft speed control request to the vehicle controller, where the crankshaft speed control request includes a target crankshaft speed;

The vehicle controller controls the crankshaft speed of the engine to decrease toward the target crankshaft speed when receiving the crankshaft speed control request;

The transmission controller sends a crankshaft torque increase request to the vehicle controller when the transmission completes the gear shift and the speed difference between the two sides of the clutch is lower than the safety threshold;

When receiving the crankshaft torque increase request sent by the transmission controller, the vehicle controller increases the crankshaft torque of the engine according to the crankshaft torque increase request;

The transmission controller increases torque of the clutch synchronously during an increase in crankshaft torque of the engine.

According to an embodiment of the present disclosure, the crankshaft torque control request includes status information for indicating whether a crankshaft speed control mode is activated, and before the vehicle controller controls the engine to reduce the crankshaft torque according to the crankshaft torque control request, include:

The vehicle controller determines that the state information indicates that a crankshaft speed control mode is inactive.

According to an embodiment of the present disclosure, the vehicle controller controls the engine to reduce the crankshaft torque according to the crankshaft torque control request, including:

The vehicle controller controls the reduction of the crankshaft torque of the engine through the engine controller of the hybrid vehicle; and, during the process of reducing the crankshaft torque of the engine, controls the dual motor of the hybrid vehicle. The controller controls the output torque of the drive motor of the hybrid vehicle to increase.

According to an embodiment of the present disclosure, the crankshaft speed control request further includes a crankshaft speed control mode activation request, and the vehicle controller controls the crankshaft speed of the engine to decrease toward the target crankshaft speed, including:

The vehicle controller switches the crankshaft control mode to the speed control mode according to the activation request of the crankshaft speed control mode; The target crankshaft speed decreases.

According to an embodiment of the present disclosure, the method further includes: the vehicle controller uses the power generated by the reduced rotational speed of the generator to charge a power battery of the hybrid vehicle.

According to one embodiment of the present disclosure, the shift request further includes a target crankshaft torque, and the method further includes:

When the clutch is in a closed state and the crankshaft torque of the engine increases to the target crankshaft torque, the transmission controller determines that the gear shift is completed, and sends a gear shift completion signal to the vehicle controller .

According to an embodiment of the present disclosure, the crankshaft torque increase request includes a crankshaft speed control mode inactivation request, and the vehicle controller controls the crankshaft speed of the engine when receiving the crankshaft speed control request The reduction toward the target crankshaft speed includes:

the transmission controller switches the crankshaft control mode to the torque control mode according to the crankshaft speed control mode inactivation request;

By increasing the torque of the generator, the crankshaft torque of the engine is increased to the target crankshaft torque.

The embodiment of the first aspect of the present disclosure proposes a gear shifting method for a hybrid vehicle, wherein a vehicle controller of the hybrid vehicle sends a gear shift request to a gearbox; the gearbox controller controls the two sides of the clutch to generate rotational speed according to the gear shift request and send the crankshaft torque control request to the vehicle controller; the vehicle controller controls the engine to reduce the crankshaft torque according to the crankshaft torque control request; the transmission controller controls the clutch torque to reduce synchronously during the crankshaft torque reduction process of the engine ; The transmission controller performs the shift operation according to the shift request after the clutch is turned on. By controlling the crankshaft torque of the engine, it is ensured that the opening and coupling of the clutch can be performed smoothly without bumps and impacts during the shifting process, reducing the wear and impact of the components during the shifting process, and improving the service life of the components.

In order to achieve the above purpose, the second aspect of the present disclosure provides a vehicle controller, the vehicle controller is configured to execute the gear shifting method for a hybrid vehicle as proposed in the first aspect of the present disclosure. The steps performed by the vehicle controller.

In order to achieve the above objective, a third aspect of the present disclosure provides a transmission controller, characterized in that the transmission controller is configured to execute the hybrid vehicle according to the first aspect of the disclosure. Steps performed by the transmission controller in a gear shift method.

In order to achieve the above purpose, the fourth aspect of the present disclosure provides a vehicle, including: a vehicle controller according to the third aspect of the present disclosure.

To achieve the above purpose, a fifth aspect of the present disclosure provides a computing processing device, including:

a memory in which computer readable code is stored; and

One or more processors, when the computer readable codes are executed by the one or more processors, the computing processing device executes the method for shifting a hybrid vehicle proposed by the embodiment of the first aspect of the present disclosure.

In order to achieve the above object, the sixth aspect of the present disclosure provides a computer program, including computer-readable codes, when the computer-readable codes are executed on a computing and processing device, causing the computing and processing device to execute the first step of the present disclosure. In one aspect, the proposed method for shifting a hybrid vehicle is provided.

To achieve the above purpose, the seventh aspect of the present disclosure provides a computer-readable storage medium, in which the computer program proposed by the sixth aspect of the present disclosure is stored.

Additional aspects and advantages of the present disclosure will be set forth, in part, from the following description, and in part will be apparent from the following description, or may be learned by practice of the present disclosure.

Description of drawings

The above and/or additional aspects and advantages of the present disclosure will become apparent and readily understood from the following description of embodiments taken in conjunction with the accompanying drawings, wherein:

FIG. 1 provides a flowchart of a method for shifting gears of a hybrid vehicle according to an embodiment of the present disclosure;

FIG. 2 provides a structural block diagram of a method for shifting a hybrid vehicle according to an embodiment of the present disclosure;

FIG. 3 provides a flowchart of another method for shifting a hybrid vehicle according to an embodiment of the present disclosure;

FIG. 4 provides a schematic structural diagram of a vehicle controller according to an embodiment of the present disclosure;

FIG. 5 provides a schematic structural diagram of a transmission controller according to an embodiment of the present disclosure;

FIG. 6 provides a schematic structural diagram of a vehicle according to an embodiment of the present disclosure;

FIG. 7 provides a schematic structural diagram of a computing processing device according to an embodiment of the present disclosure;

FIG. 8 provides a schematic diagram of a storage unit for portable or fixed program code implementing the method according to the present disclosure according to an embodiment of the present disclosure.

Detailed ways

Embodiments of the present disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present disclosure and should not be construed as a limitation of the present disclosure.

When the following description refers to the drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the illustrative examples below are not intended to represent all implementations consistent with this disclosure.

It should be noted that, in the present disclosure, the terms "S101", "S102" and the like in the description, the claims, and the drawings are used to distinguish steps, and are not necessarily interpreted as performing method steps in a specific order or sequence.

The specific embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure, but not to limit the present disclosure.

Taking the method applied to a hybrid vehicle as an example, FIG. 1 provides a flowchart of a method for shifting gears of a hybrid vehicle according to an embodiment of the present disclosure. The hybrid vehicle includes a vehicle controller (HCU, Hybrid Control Unit) and a Transmission Control Unit (TCU, Transmission Control Unit), as shown in Figure 1, the method includes the following steps.

In step S101, the vehicle controller sends a shift request to the transmission controller in the hybrid vehicle, where the shift request includes the target gear.

In step S102, the transmission controller controls the speed difference between the two sides of the clutch to generate a rotational speed difference according to the shift request, and sends a crankshaft torque control request to the vehicle controller.

In step S103, when receiving the crankshaft torque control request, the vehicle controller controls the engine to reduce the crankshaft torque according to the crankshaft torque control request.

In step S104, the transmission controller controls the synchronous reduction of the torque of the clutch during the reduction of the crankshaft torque of the engine.

In step S105, after the clutch is turned on, the transmission controller performs a shift operation according to the target gear.

The hybrid vehicle may be a hybrid vehicle, which is not specifically limited in the present disclosure.

Specifically, the vehicle controller sends a shift request to the transmission controller through the CAN line, and the shift request includes the target gear; when the transmission controller receives the gear shift request, it sends a request to the vehicle controller through the CAN line. Feedback that the shift request has been received, control the speed difference between the two sides of the clutch according to the shift request, and send the crankshaft torque control request to the vehicle controller through the CAN line; the vehicle controller receives the crankshaft torque control request through the CAN line In the case of , the engine is controlled to reduce the crankshaft torque by the first preset gradient value according to the crankshaft torque control request; the transmission controller obtains the state information of the engine through the CAN line, and controls the torque of the clutch during the reduction of the crankshaft torque of the engine. The first preset gradient value is synchronously reduced; when the clutch is in a disengaged state, the transmission performs a shifting operation according to the target gear.

The first preset gradient value may be preset according to the crankshaft torque required by the actual gear shifting process of the hybrid vehicle, which is not specifically limited in the present disclosure.

By controlling the crankshaft speed and crankshaft torque of the engine, the method for shifting a hybrid vehicle provided by the present disclosure ensures that the clutch opening and coupling process is performed smoothly and without turbulence during the shifting process of the hybrid vehicle, reducing the number of elements in the The wear and impact during the shifting process increase the service life of the components; during the shifting process, the torque of the drive motor is controlled to increase to avoid the speed fluctuation of the clutch, so that the entire shifting process is smooth and excessive, and the driving of the hybrid vehicle is improved. By controlling the working mode and working state of the generator during the shifting process, the time for the engine crankshaft speed to reach the target speed is shortened, thereby shortening the time required for shifting, and when the engine speed is reduced, it can be Drive the generator to charge the power battery; use the vehicle controller and the gearbox controller to adjust the speed, torque and working mode involved in the shifting process of the hybrid vehicle, so that the hybrid power during the shifting process is adjusted. The vehicle is in optimal operating condition.

The hybrid vehicle in the shifting method of the hybrid vehicle of the present disclosure is mainly composed of a low-voltage system (LV Harness), a high-voltage system (HV Harness) and other components. As shown in Figure 2, see the dashed box, the low-voltage system is mainly composed of HCU (Hybrid Control Unit, vehicle controller), BMS (Battery Management System, battery management system), EMS (Engine Management System, engine controller), TCU (Transmission Control Unit, gearbox controller) and other components, the high-voltage system is mainly composed of GM (generator), TM (drive motor), DMCU (dual-machine controller), HV Battery (high-voltage battery) and other components; other The components are composed of mechanical parts such as ICE (Internal Combustion Engine), Transmission (transmission).

Specifically, the HCU receives and processes the signals sent by the BMS, EMS, TCU, and DMCU through the CAN line. The BMS monitors and reports the HV Battery status through the CAN line, and receives and processes the signals sent by the HCU. The EMS monitors and reports the ICE status through the CAN line, and receives and processes the signals sent by the HCU phase. The TCU monitors and reports the Transmission status through the CAN line, and receives and processes the signals sent by the HCU. Transmission performs corresponding actions according to the instructions sent by the TCU. The DMCU monitors and reports the status of GM, TM, and DMCU through the CAN line, and receives and processes the signals sent by the HCU. The GM, TM, and DMCU execute corresponding actions according to the instructions sent by the DMCU. The ICE performs corresponding actions according to the instructions sent by the EMS. The HV Battery performs the corresponding actions according to the instructions sent by the BMS.

Optionally, the crankshaft torque control request may include status information for indicating whether the crankshaft speed control mode is activated. In step S103, before the vehicle controller HCU controls the engine ICE to reduce the crankshaft torque according to the crankshaft torque control request, it may include: : The vehicle controller HCU determines that the status information indicates that the crankshaft speed control mode is not activated.

Specifically, the crankshaft speed control mode includes an active state and an inactive state, which can be obtained according to state information in the crankshaft torque control request.

When the crankshaft speed control mode is inactive, the vehicle controller HCU controls the engine ICE to reduce the crankshaft torque according to the crankshaft torque control request.

Optionally, in step S103, the vehicle controller controls the engine to reduce the crankshaft torque according to the crankshaft torque control request, which may include:

The vehicle controller controls the reduction of the crankshaft torque of the engine through the engine controller of the hybrid vehicle; and, during the process of reducing the crankshaft torque of the engine, controls the output of the drive motor of the hybrid vehicle through the dual motor controller of the hybrid vehicle Torque increases.

Specifically, when the crankshaft speed control mode is inactive, the vehicle controller HCU controls the crankshaft torque of the engine ICE to decrease by a first preset gradient value through the engine controller EMS according to the crankshaft torque control request; During the torque reduction process, the output torque of the drive motor TM is controlled by the double-click controller DMCU of the hybrid vehicle to increase, which avoids the speed fluctuation of the clutch, makes the entire shifting process smooth and excessive, and improves the driving comfort of the hybrid vehicle. sex.

Optionally, in step S105, after the clutch is turned on, the transmission controller performs a gear shifting operation according to the target gear, which may include:

When the transmission controller determines that the clutch is in the disengaged state, it sends a crankshaft speed control request to the vehicle controller, and the crankshaft speed control request includes the target crankshaft speed;

When receiving the crankshaft speed control request, the vehicle controller controls the engine crankshaft speed to decrease toward the target crankshaft speed;

The transmission controller increases the torque of the clutch synchronously during the increase in crankshaft torque of the engine.

Specifically, during the shifting process of the hybrid vehicle, the gearbox needs to go through three stages: disengagement, synchronization, and gearing; the crankshaft is the power output element on the engine ICE, which is used to transmit torque and rotational speed. When the transmission controller TCU determines that the clutch is in a disengaged state, it sends a crankshaft speed control request to the vehicle controller HCU through the CAN line. The crankshaft speed control request includes the crankshaft speed; the vehicle controller HCU receives the crankshaft speed through the CAN line. When the control request is made, the crankshaft speed of the control engine ICE is reduced to the target crankshaft speed; the transmission controller TCU controls the whole vehicle through the CAN line when the transmission completes the forward gear and the speed difference between the two sides of the clutch is lower than the safety threshold. The controller HCU sends a crankshaft torque increase request, and limits the speed difference on both sides of the clutch through a safety threshold, which can avoid clutch damage caused by the excessive difference between the two speeds; the vehicle controller HCU receives the transmission controller TCU through the CAN line. After the crankshaft torque increase request is sent, the crankshaft torque of the engine is increased according to the crankshaft torque increase request; the transmission controller TCU synchronously increases the torque of the clutch in the process of increasing the crankshaft torque of the engine ICE.

Optionally, the crankshaft speed control request further includes a crankshaft speed control mode activation request. In step S105, the vehicle controller controls the crankshaft speed of the engine to decrease toward the target crankshaft speed, which may include:

The vehicle controller switches the crankshaft control mode to the speed control mode according to the activation request of the crankshaft speed control mode; and reduces the engine crankshaft speed toward the target crankshaft speed by reducing the speed of the generator of the hybrid vehicle.

Specifically, when the vehicle controller HCU obtains, according to the state information in the crankshaft torque control request, that the curse speed control mode is activated, it switches the crankshaft control mode to the speed control mode according to the activation request of the crankshaft speed control mode; and reduces the power generation by reducing the power generation The speed of the engine GM reduces the crankshaft speed of the engine ICE to the target crankshaft speed. During the shifting process, by controlling the working mode and working state of the generator GM, the time for the crankshaft speed of the engine ICE to reach the target speed is shortened, thereby shortening the time required for shifting.

Optionally, the method may further include: the vehicle controller uses the power generated by the reduced rotational speed of the generator to charge the power battery of the hybrid vehicle.

Specifically, the reduced rotational speed of the generator GM is used to charge the power battery, thereby avoiding energy waste of the generator GM.

Optionally, the crankshaft torque increase request includes a crankshaft speed control mode inactivation request, and the vehicle controller controls the crankshaft speed of the engine to decrease toward the target crankshaft speed when receiving the crankshaft speed control request, which may include:

The transmission controller switches the crankshaft control mode to the torque control mode according to the inactive request of the crankshaft speed control mode;

Specifically, by controlling the working mode and working state of the generator GM during the shifting process, the time for the crankshaft speed of the engine ICE to reach the target speed is shortened, thereby shortening the time required for shifting.

Optionally, the gear shift request further includes a target crankshaft torque, and the method may further include: the transmission controller determines that the gearshift is completed when the clutch is in a closed state and the crankshaft torque of the engine increases to the target crankshaft torque, and sends a The vehicle controller sends a shift completion signal.

For example, as shown in Figure 3, the HCU sends a shift request to the TCU, and the shift request includes the target gear; when the TCU receives the shift request, it controls the clutch to generate a rotational speed difference according to the shift request, and sends the shift request to the TCU. The HCU sends a crankshaft torque control request; after receiving the crankshaft torque control request, the HCU controls the engine to reduce the crankshaft torque through the EMS according to the crankshaft torque control request, and controls the crankshaft motor output torque to increase through the DMCU;

Determine whether the clutch is in the disengaged state. When the clutch is in the disengaged state, the TCU sends a crankshaft speed control request to the HCU, and the crankshaft speed control request includes the target speed; the TCU disengages, synchronizes and enters the gear according to the target gear. The crankshaft speed control request switches the crankshaft control mode of the GM to the speed control mode, and reduces the speed of the GM, so that the crankshaft speed of the ICE decreases toward the target speed;

It is judged whether the transmission has completed the forward gear, and the speed difference between the two sides of the clutch is lower than the safety threshold. When the transmission completes the forward gear and the speed difference between the two sides of the clutch is lower than the safety threshold, the TCU sends a crankshaft torque increase request to the HCU. Determine whether the engine speed reaches the target crankshaft speed;

When the engine speed reaches the target crankshaft speed, the TCU sends a crankshaft speed control mode inactive request to the HCU, the HCU switches the crankshaft control mode to the torque control mode, and increases the crankshaft torque of the engine according to the crankshaft torque increase request sent by the TCU ;

It is determined whether the clutch is in the closed state and the engine torque is increased to the target crankshaft torque. When the clutch is in the closed state and the engine torque is increased to the target crankshaft torque, the TCU sends a shift completion signal to the HCU.

When the clutch is not in the disengaged state, when the TCU receives the shift request, it controls the speed difference between the two sides of the clutch according to the shift request, and sends the crankshaft torque control request to the HCU; after the HCU receives the crankshaft torque control request , according to the crankshaft torque control request, the EMS controls the engine to reduce the crankshaft torque, and the DMCU controls the crankshaft motor output torque to increase until the clutch is in a disengaged state.

In the case that the transmission has not completed the forward gear or the speed difference between the two sides of the clutch is greater than or equal to the safety threshold, the TCU will disengage, synchronize and gear according to the target gear until the transmission completes the forward gear.

When the clutch is not in the closed state or the engine torque is less than the target crankshaft torque, the HCU switches the crankshaft control mode to the torque control mode, and increases the crankshaft torque of the engine according to the crankshaft torque increase request sent by the TCU until the clutch is in the closed state And the engine torque is increased to the target crankshaft torque.

In order to realize the above embodiments, the present disclosure further proposes a vehicle controller 200. As shown in FIG. 4 , the vehicle controller 200 is configured to execute the execution of the vehicle controller in the above-mentioned method for shifting gears of a hybrid vehicle. A step of.

The vehicle controller provided by the present disclosure cooperates with the gearbox controller in the above-mentioned gear shifting method of a hybrid vehicle, so as to control the crankshaft speed and crankshaft torque of the engine to ensure that the clutch is opened during the gear shifting process of the hybrid vehicle And the combination process is carried out smoothly and without bumps, which reduces the wear and impact of the components during the shifting process, and improves the service life of the components; during the shifting process, the torque of the drive motor is controlled to increase to avoid the speed fluctuation of the clutch. , so that the entire shifting process is smooth and excessive, and the driving comfort of the hybrid vehicle is improved; in the shifting process, by controlling the working mode and working state of the generator, the time for the engine crankshaft speed to reach the target speed is shortened. The time required for shifting, and when the engine speed is reduced, the generator can be driven to charge the power battery; the vehicle controller and the gearbox controller are used to control the speed and rotation involved in the shifting process of the hybrid vehicle. The torque and working mode are adjusted so that the hybrid vehicle is in the optimal operating state during the shifting process.

The specific manner in which the vehicle controller and the gearbox controller in the above embodiments perform operations has been described in detail in the embodiments of the method, and will not be described in detail here.

In order to realize the above-mentioned embodiment, the present disclosure also proposes a transmission controller 300 , referring to FIG. 5 , the transmission controller 300 is configured to execute the steps performed by the transmission controller in the above-mentioned gear shifting method of a hybrid vehicle.

The transmission controller provided by the present disclosure cooperates with the vehicle controller in the above-mentioned gear shifting method of a hybrid vehicle, so as to control the crankshaft speed and crankshaft torque of the engine to ensure that the clutch is opened during the gear shifting process of the hybrid vehicle And the combination process is carried out smoothly and without bumps, which reduces the wear and impact of the components during the shifting process, and improves the service life of the components; during the shifting process, the torque of the drive motor is controlled to increase to avoid the speed fluctuation of the clutch. , so that the entire shifting process is smooth and excessive, and the driving comfort of the hybrid vehicle is improved; in the shifting process, by controlling the working mode and working state of the generator, the time for the engine crankshaft speed to reach the target speed is shortened. The time required for shifting, and when the engine speed is reduced, the generator can be driven to charge the power battery; the vehicle controller and the gearbox controller are used to control the speed and rotation involved in the shifting process of the hybrid vehicle. The torque and working mode are adjusted so that the hybrid vehicle is in the optimal operating state during the shifting process.

In order to realize the above embodiments, the present disclosure further proposes a vehicle 400, as shown in FIG. 6, including a vehicle controller 200 and a transmission controller 300, wherein the vehicle controller 200 is used to perform the above-mentioned replacement of the hybrid vehicle. Steps performed by the vehicle controller in the gear shift method;

The transmission controller 300 is used to execute the steps performed by the transmission controller in the above-mentioned method for shifting gears of a hybrid vehicle. The vehicle may be a hybrid vehicle, and may also include components such as an engine, a drive motor, and a generator, which are not specifically limited in the present disclosure.

In the vehicle provided by the present disclosure, by controlling the crankshaft rotational speed and crankshaft torque of the engine, it is possible to ensure that the clutch opening and coupling process is performed smoothly and without bumps during the shifting process of the hybrid vehicle. During the shifting process, the torque of the driving motor is controlled to increase to avoid the speed fluctuation of the clutch, so that the entire shifting process is smooth and excessive, and the driving comfort of the hybrid vehicle is improved; During the shifting process, by controlling the working mode and working state of the generator, the time for the engine crankshaft speed to reach the target speed is shortened, thereby shortening the time required for shifting, and when the engine speed is reduced, the generator can be driven to give The power battery is charged; the vehicle controller and the gearbox controller are used to adjust the speed, torque and working mode involved in the shifting process of the hybrid vehicle, so that the hybrid vehicle is in the optimal position during the shifting process. operating status.

In order to realize the above embodiments, the present disclosure also proposes a computing processing device, including:

a memory in which computer readable code is stored; and

One or more processors, when the computer readable code is executed by the one or more processors, the computing processing device executes the aforementioned method of shifting a hybrid vehicle.

In order to implement the above-mentioned embodiments, the present disclosure also proposes a computer program, comprising computer-readable codes, which, when the computer-readable codes are executed on a computing and processing device, cause the computing and processing device to execute the aforementioned hybrid vehicle operation. Shift method.

In order to implement the above-mentioned embodiments, the present disclosure also proposes a computer-readable storage medium in which the aforementioned computer program is stored.

FIG. 7 provides a schematic structural diagram of a computing processing device according to an embodiment of the present disclosure. The computing processing device typically includes a processor 1110 and a computer program product or computer readable medium in the form of a memory 1130 . The memory 1130 may be electronic memory such as flash memory, EEPROM (Electrically Erasable Programmable Read Only Memory), EPROM, hard disk, or ROM. The memory 1130 has storage space 1150 for program code 1151 for performing any of the method steps in the above-described methods. For example, the storage space 1150 for program codes may include various program codes 1151 for implementing various steps in the above methods, respectively. These program codes can be read from or written to one or more computer program products. These computer program products include program code carriers such as hard disks, compact disks (CDs), memory cards or floppy disks. Such computer program products are typically portable or fixed storage units as shown in FIG. 8 . The storage unit may have storage segments, storage spaces, etc. arranged similarly to the storage 1130 in the server of FIG. 7 . The program code may, for example, be compressed in a suitable form. Typically, the storage unit includes computer readable code 1151', i.e. code readable by a processor such as 1110, for example, which when executed by a server, causes the server to perform the various steps in the methods described above.

In the description of this specification, description with reference to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples", etc., mean specific features described in connection with the embodiment or example , structures, materials, or features are included in at least one embodiment or example of the present disclosure. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and combine the different embodiments or examples described in this specification, as well as the features of the different embodiments or examples, without conflicting each other.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In the description of the present disclosure, "plurality" means at least two, such as two, three, etc., unless expressly and specifically defined otherwise.

Any process or method description in the flowcharts or otherwise described herein may be understood to represent a module, segment or portion of code comprising one or more executable instructions for implementing custom logical functions or steps of the process , and the scope of the preferred embodiments of the present disclosure includes alternative implementations in which the functions may be performed out of the order shown or discussed, including performing the functions substantially concurrently or in the reverse order depending upon the functions involved, which should It is understood by those skilled in the art to which the embodiments of the present disclosure pertain.

The logic and/or steps represented in flowcharts or otherwise described herein, for example, may be considered an ordered listing of executable instructions for implementing the logical functions, may be embodied in any computer-readable medium, For use with, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a system including a processor, or other system that can fetch instructions from and execute instructions from an instruction execution system, apparatus, or apparatus) or equipment. For the purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transport the program for use by or in connection with an instruction execution system, apparatus, or apparatus. More specific examples (non-exhaustive list) of computer readable media include the following: electrical connections with one or more wiring (electronic devices), portable computer disk cartridges (magnetic devices), random access memory (RAM), Read Only Memory (ROM), Erasable Editable Read Only Memory (EPROM or Flash Memory), Fiber Optic Devices, and Portable Compact Disc Read Only Memory (CDROM). In addition, the computer readable medium may even be paper or other suitable medium on which the program may be printed, as the paper or other medium may be optically scanned, for example, followed by editing, interpretation, or other suitable medium as necessary process to obtain the program electronically and then store it in computer memory.

It should be understood that portions of the present disclosure may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware as in another embodiment, it can be implemented by any one of the following techniques known in the art, or a combination thereof: discrete with logic gates for implementing logic functions on data signals Logic circuits, application specific integrated circuits with suitable combinational logic gates, Programmable Gate Arrays (PGA), Field Programmable Gate Arrays (FPGA), etc.

Those skilled in the art can understand that all or part of the steps carried by the methods of the above embodiments can be completed by instructing the relevant hardware through a program, and the program can be stored in a computer-readable storage medium, and the program can be stored in a computer-readable storage medium. When executed, one or a combination of the steps of the method embodiment is included.

In addition, each functional unit in each embodiment of the present disclosure may be integrated into one processing module, or each unit may exist physically alone, or two or more units may be integrated into one module. The above-mentioned integrated modules can be implemented in the form of hardware, and can also be implemented in the form of software function modules. If the integrated modules are implemented in the form of software functional modules and sold or used as independent products, they may also be stored in a computer-readable storage medium.

The above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, and the like. Although the embodiments of the present disclosure have been shown and described above, it should be understood that the above-mentioned embodiments are exemplary and should not be construed as limiting the present disclosure. Embodiments are subject to variations, modifications, substitutions and variations.

Claims

A method for shifting gears of a hybrid vehicle, characterized in that the hybrid vehicle includes a vehicle controller and a gearbox controller, and the method includes:

The vehicle controller sends a shift request to the gearbox controller in the hybrid vehicle, where the shift request includes a target gear;

The transmission controller controls the speed difference between the two sides of the clutch to generate a rotational speed difference according to the shift request, and sends a crankshaft torque control request to the vehicle controller;

When receiving the crankshaft torque control request, the vehicle controller controls the engine to reduce the crankshaft torque according to the crankshaft torque control request;

the transmission controller controls the synchronous reduction of the torque of the clutch during the reduction of the crankshaft torque of the engine;

The transmission controller performs a shifting operation according to the target gear position after the clutch is turned on.
The method according to claim 1, wherein the transmission controller performs a gear shifting operation according to the target gear after the clutch is turned on, comprising:

When determining that the clutch is in a disengaged state, the transmission controller sends a crankshaft speed control request to the vehicle controller, where the crankshaft speed control request includes a target crankshaft speed;

The vehicle controller controls the crankshaft speed of the engine to decrease toward the target crankshaft speed when receiving the crankshaft speed control request;

The transmission controller sends a crankshaft torque increase request to the vehicle controller when the transmission completes the gear shift and the speed difference between the two sides of the clutch is lower than the safety threshold;

When receiving the crankshaft torque increase request sent by the transmission controller, the vehicle controller increases the crankshaft torque of the engine according to the crankshaft torque increase request;

The transmission controller increases torque of the clutch synchronously during an increase in crankshaft torque of the engine.
The method according to claim 1, wherein the crankshaft torque control request includes status information for indicating whether a crankshaft speed control mode is activated, and the vehicle controller controls the engine speed reduction according to the crankshaft torque control request. Before small crankshaft torque, including:

The vehicle controller determines that the state information indicates that a crankshaft speed control mode is inactive.
The method according to claim 1, wherein the vehicle controller controls the engine to reduce the crankshaft torque according to the crankshaft torque control request, comprising:

The vehicle controller controls the reduction of the crankshaft torque of the engine through the engine controller of the hybrid vehicle; and, during the process of reducing the crankshaft torque of the engine, controls the dual motor of the hybrid vehicle. The controller controls the output torque of the drive motor of the hybrid vehicle to increase.
The method according to claim 2, wherein the crankshaft speed control request further comprises a crankshaft speed control mode activation request, and the vehicle controller controls the crankshaft speed of the engine to decrease toward the target crankshaft speed, include:

The vehicle controller switches the crankshaft control mode to the speed control mode according to the activation request of the crankshaft speed control mode; The target crankshaft speed decreases.
The method according to claim 5, wherein the method further comprises: the vehicle controller uses the power generated by the reduced rotational speed of the generator to charge the power battery of the hybrid vehicle.
3. The method of claim 2, wherein the shift request further includes a target crankshaft torque, the method further comprising:

When the clutch is in a closed state and the crankshaft torque of the engine increases to the target crankshaft torque, the transmission controller determines that the gear shift is completed, and sends a gear shift completion signal to the vehicle controller .
The method according to claim 7, wherein the crankshaft torque increase request includes a crankshaft speed control mode inactivation request, and the vehicle controller controls all the crankshaft speed control requests when receiving the crankshaft speed control request. The crankshaft speed of the engine is reduced toward the target crankshaft speed, including:

the transmission controller switches the crankshaft control mode to the torque control mode according to the crankshaft speed control mode inactivation request;

By increasing the torque of the generator, the crankshaft torque of the engine is increased to the target crankshaft torque.
A vehicle controller, characterized in that the vehicle controller is configured to execute the operation performed by the vehicle controller in the gear shifting method for a hybrid vehicle according to any one of claims 1-8. step.
A transmission controller, characterized in that the transmission controller is configured to execute the transmission controller in the gear shifting method of a hybrid vehicle according to any one of claims 1-8. step.
A vehicle, characterized in that it comprises: a vehicle controller and a transmission controller, wherein the vehicle controller is used to execute all the functions of the vehicle controller in the gear shifting method for a hybrid vehicle according to claim 1. the steps performed;

The transmission controller is used to execute the steps performed by the transmission control box in the method of shifting a hybrid vehicle of claim 1 .
A computing and processing device, comprising:

a memory in which computer readable code is stored; and

One or more processors, when the computer readable code is executed by the one or more processors, the computing processing device performs the conversion of the hybrid vehicle of any one of claims 1-8. block method.
A computer program comprising computer readable code which, when executed on a computing processing device, causes the computing processing device to perform a hybrid vehicle according to any one of claims 1-8. Shift method.
A computer-readable storage medium in which the computer program of claim 13 is stored.