CN220727086U - Gearbox controller, gear shifting control system and electric automobile - Google Patents

Abstract

The utility model relates to the technical field of automobiles, and discloses a gearbox controller, a gear shifting control system and an electric automobile. The gearbox controller comprises: the information receiving module is used for being connected with the whole vehicle controller and receiving gear shifting information sent by the whole vehicle controller, wherein the gear shifting information comprises the current accelerator pedal opening and the current road gradient; and the lifting torque indication module is connected with the information receiving module, is used for being connected with the motor controller, is used for determining the lifting slope of the motor torque according to the current accelerator pedal opening and the current road slope, and sends the torque value determined according to the slope to the motor controller so that the motor controller controls the lifting of the motor torque according to the received torque value. Through the gearbox controller provided by the utility model, the lifting of the torque of the electric automobile in the gear shifting process is not based on a fixed slope, and the slope of the lifting of the motor torque which is most suitable for the current working condition of the whole automobile can be determined by combining the driving intention of a driver and the road condition.

Description

Gearbox controller, gear shifting control system and electric automobile

Technical Field

The utility model relates to the technical field of automobiles, in particular to a gearbox controller, a gear shifting control system and an electric automobile.

Background

The gear shifting control process of the electric automobile can be divided into 5 steps: s1: a torque reducing stage of the driving motor; s2: a gear shifting stage of the gearbox; s3: a stage of driving the motor to regulate the speed to a target rotating speed; s4: a stage of gear shifting of the gearbox to a target gear; s5: the drive motor resumes the torque phase, i.e., the torque up phase.

At present, the control method for the S1 and S5 stages is relatively simple, and generally only the control of torque reduction and torque recovery is performed on the driving motor through a fixed slope. In the actual gear shifting process, the S1 and the S5 occupy longer gear shifting time, and the control mode aiming at the S1 and the S5 directly influences the dynamic property and the smoothness of the vehicle. The simple mode of torque lifting control through fixed slope in the prior art has difficult to cope with complex whole vehicle working conditions.

Disclosure of Invention

The purpose of this application is in order to overcome prior art and carry out the moment of torsion through fixed slope in the gear shifting process and go up and down can not deal with this problem of complicated whole car operating mode, provides a gearbox controller, gear shifting control system and electric automobile.

A first aspect of the present application provides a gearbox controller comprising:

the information receiving module is used for being connected with the whole vehicle controller and receiving gear shifting information sent by the whole vehicle controller, wherein the gear shifting information comprises the current accelerator pedal opening and the current road gradient;

the lifting torque indication module is connected with the information receiving module, is used for being connected with the motor controller, is used for determining the lifting slope of the motor torque according to the current accelerator pedal opening and the current road slope, and sends a torque value determined according to the slope to the motor controller so that the motor controller controls the lifting of the motor torque according to the torque value;

the lifting torque indication module comprises a lifting slope data storage sub-module and a slope determination sub-module, wherein the lifting slope data storage sub-module is used for storing a lifting torque slope list; the slope determination submodule is connected with the lifting slope data storage submodule and is used for determining slopes corresponding to the current accelerator pedal opening and the current road slope according to the current accelerator pedal opening, the current road slope and the lifting torque slope list.

In one embodiment of the present application, the shift information further includes a target gear, and the transmission controller further includes:

and the rotating speed control module is used for being connected with the motor controller, determining a target rotating speed according to the target gear and sending the target rotating speed to the motor controller so that the motor controller can adjust the rotating speed of the motor according to the target rotating speed.

In one embodiment of the present application, the transmission controller further comprises:

the gear shifting control module is used for being connected with a gear shifting executing mechanism in the gearbox and controlling the gearbox to shift gears;

and the torque comparison module is connected with the gear-shifting control module, is used for being connected with the motor controller, is used for obtaining the real-time torque of the motor through the motor controller, and sends a gear-shifting instruction to the gear-shifting control module when the real-time torque is reduced to a preset value so that the gear-shifting control module controls the gearbox to shift.

In one embodiment of the present application, the transmission controller further comprises:

and the neutral gear prompt module is connected with the rotating speed control module and is used for sending a neutral gear prompt instruction to the rotating speed control module after the gear of the gearbox is completely disengaged, so that the rotating speed control module determines the target rotating speed according to the target gear after receiving the neutral gear prompt instruction and sends the target rotating speed to the motor controller.

In one embodiment of the present application, the transmission controller further comprises:

the gear-shifting control module is used for being connected with a gear-shifting executing mechanism in the gearbox and controlling the gearbox to shift into a target gear;

the speed comparison module is connected with the gear-shifting control module, is used for being connected with the motor controller, is used for obtaining the real-time speed of the motor through the motor controller, and sends a gear-shifting instruction to the gear-shifting control module when the real-time speed reaches the target speed so as to enable the gear-shifting control module to control the gearbox to shift to the target gear.

In one embodiment of the present application, the transmission controller further comprises:

and the gear-in completion prompt module is connected with the lifting torque indication module and is used for sending a gear-in completion prompt instruction to the lifting torque indication module after the gearbox is in gear to a target gear, so that the lifting torque indication module determines the slope of motor torque rise according to the current accelerator pedal opening and the current road slope after receiving the gear-in completion prompt instruction, and sends a torque value determined according to the slope to the motor controller.

In one embodiment of the present application, the lift torque indicating module further includes a calculating submodule for calculating a slope corresponding to the current accelerator pedal opening and the current road slope through a preset function and determining the slope as the slope.

A second aspect of the present application provides a shift control system, the shift control system comprising:

the gearbox controller provided in the first aspect of the application;

the whole vehicle controller is connected with the gearbox controller and is used for sending gear shifting information to the gearbox controller;

and the motor controller is connected with the gearbox controller and is used for receiving the torque value and controlling the lifting of the motor torque according to the torque value.

A third aspect of the present application provides an electric vehicle, including the shift control system provided in the second aspect of the present application.

Through the technical scheme, the gearbox controller can communicate with the whole vehicle controller through the information receiving module, the current accelerator pedal opening and the current road gradient are obtained, the slope of motor torque lifting most suitable for the current whole vehicle working condition is determined through the lifting torque indicating module according to the current accelerator pedal opening and the current road gradient, then the torque values in the motor torque reducing process and the torque lifting process are determined according to the slope, and the motor controller is instructed to control the lifting of motor torque according to the torque values. Therefore, the lifting of the torque of the electric automobile in the gear shifting process is not based on a single fixed slope, the driving intention of a driver and the road condition can be combined to determine the slope of the lifting of the motor torque which is most suitable for the current working condition of the whole automobile, and the gear shifting time required in the gear shifting process and the gear shifting smoothness in the gear shifting process are balanced.

Additional features and advantages of the utility model will be set forth in the detailed description which follows.

Drawings

The accompanying drawings are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate the application and, together with the description, do not limit the application. In the drawings:

FIG. 1 schematically illustrates a structural schematic of a transmission controller according to an embodiment of the present application;

FIG. 2 schematically illustrates a structural schematic of another transmission controller according to an embodiment of the present application;

FIG. 3 schematically illustrates a structural schematic of a shift control system according to an embodiment of the present application;

FIG. 4 schematically illustrates a flow diagram of a shift control system performing a shift process according to an embodiment of the present application;

Detailed Description

The following detailed description of specific embodiments of the present application refers to the accompanying drawings. It should be understood that the detailed description is presented herein for purposes of illustration and explanation only and is not intended to limit the present application.

It should be noted that, in the embodiment of the present application, directional indications (such as up, down, left, right, front, and rear … …) are referred to, and the directional indications are merely used to explain the relative positional relationship, movement conditions, and the like between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present application, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. Moreover, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be regarded as not exist and not within the protection scope of the present application.

In the gear shifting process of the electric automobile, the motor needs to be firstly subjected to torque reduction, and after the gear box is shifted out, the rotation speed of the motor is adjusted, and the gear box is shifted into gear, the motor is subjected to torque recovery and torque rising process. And the gearbox controller (Transmission Control Unit, TCU) is used for controlling the gearbox of the electric automobile to shift gears, communicating with the whole automobile controller (Vehicle control unit, VCU) and the motor controller (Motor Control Unit, MCU) and cooperatively controlling the gear shifting of the electric automobile. At present, the existing gearbox controller generally indicates the motor controller to control the lifting of the motor torque through a fixed slope, and is difficult to adapt to the complex whole vehicle working condition in the actual running process of the electric vehicle.

Fig. 1 schematically illustrates a structural schematic diagram of a transmission controller according to an embodiment of the present application, as shown in fig. 1, in an embodiment of the present application, there is provided a transmission controller 100 including:

the information receiving module 10 is used for being connected with the whole vehicle controller and receiving gear shifting information sent by the whole vehicle controller, wherein the gear shifting information comprises the current accelerator pedal opening and the current road gradient;

the lifting torque indication module 20 is connected with the information receiving module 10, is used for being connected with the motor controller, and is used for determining the lifting slope of the motor torque according to the current accelerator pedal opening and the current road slope, and sending the torque value determined according to the slope to the motor controller so that the motor controller controls the lifting of the motor torque according to the torque value;

the lifting torque indication module 20 comprises a lifting slope data storage sub-module 21 and a slope determination sub-module 22, wherein the lifting slope data storage sub-module 21 is used for storing a lifting torque slope list; the slope determination sub-module 22 is connected to the lift slope data storage sub-module 21 for determining a slope corresponding to the current accelerator pedal opening and the current road slope based on the current accelerator pedal opening, the current road slope, and the lift torque slope list.

The whole vehicle controller judges whether the electric vehicle needs to be shifted according to the received vehicle state, gear information, accelerator pedal state, brake pedal state, steering signals and the like, and when the judging result is that the electric vehicle needs to be shifted, the whole vehicle controller sends shift information to the gearbox controller 100, wherein the shift information comprises current accelerator pedal opening capable of representing the driving intention of a driver and current road gradient information capable of representing the current road state. The transmission controller 100 receives shift information transmitted from the vehicle controller through the included information receiving module 10.

After the lift torque control module included in the gearbox controller 100 obtains the current accelerator pedal opening and the current road gradient from the information receiving module 10, a slope of motor torque lift is determined according to the current accelerator pedal opening and the current road gradient, torque values of the motor in a torque reducing process and a torque increasing process are determined according to the slope, and the motor controller is instructed to control the lift of motor torque according to the determined torque values.

For example, the driving intention of the driver includes a requirement for power performance and a requirement for comfort of the whole vehicle, the two requirements can be judged according to the current opening degree of the accelerator pedal, the larger the opening degree is, the stronger the requirement for power performance of the driver is, and the requirement for comfort is relatively weaker; a smaller opening indicates that the driver is more concerned with the comfort of the vehicle and that the demand for vehicle dynamics is weaker. When the opening of the accelerator pedal is smaller, in order to ensure the gear shifting smoothness, the lifting torque indication module 20 can control the lifting of the motor torque to be relatively gentle, namely, the lifting slope of the motor torque is determined to be smaller; when the accelerator pedal opening is large, it is required to ensure vehicle dynamics, shorten the shift time, and the lift torque indicating module 20 may determine that the gradient of the motor torque lift is large. Meanwhile, because the electric automobile has power interruption in the gear shifting process, in order to ensure the power performance of the electric automobile when climbing a slope, the shorter and better the gear shifting time of the electric automobile when climbing a slope is required, the time consumption of motor torque lifting is required to be controlled by combining the difference of the current road slopes, namely the lifting torque indication module 20 needs to combine the current accelerator pedal opening and the current road slope when determining the motor torque lifting slope.

Further, the lift torque indication module 20 includes a lift slope data storage sub-module 21, and the lift slope data storage sub-module 21 stores a lift torque slope list including a correspondence relationship of accelerator pedal opening, road slope, and torque lift slope.

Table 1 list of drop torque slopes

Table 2 l torque slope list

Table 1 schematically illustrates a drop torque slope list according to an embodiment of the present application, and table 2 schematically illustrates an ascending torque slope list according to an embodiment of the present application, as shown in tables 1 and 2, for example, the ascending torque slope list may be divided into a drop torque slope list and an ascending torque slope list, and for example, the ascending torque slope list may be calibrated and adjusted according to actual driving test data of the electric vehicle. Further, the lift torque indicating module 20 further includes a slope determining sub-module 22 connected to the lift slope data storage sub-module 21, where the slope determining sub-module 22 may obtain a lift torque slope list by receiving or accessing, and determine a slope corresponding to the current accelerator pedal opening and the current road slope according to the current accelerator pedal opening, the current road slope, and the lift torque slope list.

For example, if a specific value of the current accelerator pedal opening and the current road gradient exists in the lift torque gradient list, the gradient determination submodule 22 may determine the gradient corresponding to the current accelerator pedal opening and the current road gradient directly through the correspondence in the list; if the specific value of the current accelerator pedal opening and the current road gradient does not exist in the lift torque gradient list, the gradient determination submodule 22 may calculate a gradient corresponding to the accelerator pedal opening and the current road gradient through a difference between the specific value of the current accelerator pedal opening and the current road gradient and the specific value in the list.

It should be noted that, whether the slope is obtained by directly matching the corresponding value in the slope data storage sub-module 21 and the slope is obtained by calculating the difference value in the slope determination sub-module 22, or the slope is obtained by conventional mature technical means in the art, so the gearbox controller 100 communicates with the whole vehicle controller through the information receiving module 10 and the lifting torque indicating module 20 to obtain the current accelerator pedal opening and the current road slope, and determines the slope of the lifting of the motor torque through the current accelerator pedal opening and the current road slope, that is, the balance of the smoothness and the shifting speed of the shifting process is carried out according to the intention of the driver and the road state, so that the shifting process of the electric vehicle can adapt to the complex whole vehicle working condition.

Fig. 2 schematically illustrates a structural diagram of another transmission controller according to an embodiment of the present application, as shown in fig. 2, in one embodiment of the present application, the shift information further includes a target gear, and the transmission controller 100 further includes:

the rotation speed control module 30 is configured to be connected to the motor controller, and configured to determine a target rotation speed according to the target gear, and send the target rotation speed to the motor controller, so that the motor controller adjusts the rotation speed of the motor according to the target rotation speed.

After the gear shifting of the gearbox is completed, the motor needs to be regulated to the target rotating speed. Each gear of the electric automobile has a corresponding transmission ratio, so the rotation speed control module 30 included in the gearbox controller 100 can determine a target rotation speed required to be reached by the motor according to the target gear in the gear shifting information, send the determined target rotation speed to the motor controller, instruct the motor controller to adjust the rotation speed of the motor to the target rotation speed, and match the target gear.

In one embodiment of the present application, the gearbox controller 100 further comprises:

the gear-off control module 40 is used for being connected with a gear-shifting executing mechanism in the gearbox and controlling the gearbox to perform gear-off;

the torque comparison module 50 is connected with the gear-off control module 40, and is used for being connected with the motor controller, acquiring real-time torque of the motor through the motor controller, and sending a gear-off instruction to the gear-off control module 40 when the real-time torque is reduced to a preset value so that the gear-off control module 40 controls the gearbox to perform gear-off.

During shifting, the torque comparison module 50 monitors the real-time torque of the motor, the motor controller obtains the real-time torque of the motor, and after the motor torque is reduced to a preset value, the gear-shifting control module 40 is instructed to control a gear-shifting executing mechanism of the gearbox to shift gears, so that the gearbox is retracted to neutral gear. For example, the preset value is 0n·m, that is, when the torque of the motor falls to 0n·m, the transmission can perform the off-shift operation.

In one embodiment of the present application, the transmission controller 100 further includes:

the neutral gear prompting module 60 is connected with the rotational speed control module 30, and is configured to send a neutral gear prompting instruction to the rotational speed control module 30 after the gear of the gearbox is disengaged, so that the rotational speed control module 30 determines a target rotational speed according to the target gear after receiving the neutral gear prompting instruction, and sends the target rotational speed to the motor controller.

After the gear shifting of the gearbox is completed, the motor controller can enter a rotation speed adjustment stage, so that the neutral gear prompt module 60 is required to send a neutral gear prompt instruction to the rotation speed control module 30 after the gear shifting of the gearbox is completed, and the rotation speed control module 30 is instructed to start controlling the motor to regulate the speed to a target rotation speed corresponding to a target gear through the motor controller.

In one embodiment of the present application, the transmission controller 100 further includes:

a shift control module 70 for interfacing with a shift actuator in the transmission and for controlling the transmission to shift into a target gear;

the rotation speed comparison module 80 is connected with the gear-shifting control module 70, and is used for being connected with the motor controller, acquiring the real-time rotation speed of the motor through the motor controller, and sending a gear-shifting instruction to the gear-shifting control module 70 when the real-time rotation speed reaches the target rotation speed so as to enable the gear-shifting control module 70 to control the gearbox to shift into the target gear.

In the gear shifting process, the real-time rotating speed of the motor is monitored by the rotating speed comparison module 80, the real-time rotating speed of the motor is obtained through the motor controller, and when the rotating speed of the motor is matched with the target rotating speed, the gear shifting control module 70 is instructed to control a gear shifting executing mechanism of the gearbox to shift gears, the gearbox is shifted to the target gear, and gear shifting of the gearbox is completed.

In one embodiment of the present application, the transmission controller 100 further includes:

the gear completion prompting module 90 is connected with the lifting torque indicating module 20, and is configured to send a gear completion prompting instruction to the lifting torque indicating module 20 after the transmission is shifted to the target gear, so that the lifting torque indicating module 20 determines a slope of a motor torque rise according to a current accelerator pedal opening and a current road slope after receiving the gear completion prompting instruction, and sends a torque value determined according to the slope to the motor controller.

After the gear box is shifted to the target gear, the motor controller can enter a torque recovery or torque up-converting stage, so that the gear-shifting completion prompting module 90 is required to send a gear-shifting completion prompting instruction to the lifting torque indicating module 20 after the gear box is shifted, the lifting torque indicating module 20 is instructed to determine the slope of the rising of the motor torque, and the torque value in the torque up-converting process of the motor is determined according to the slope, so that the motor controller recovers the torque of the motor according to the determined torque value.

In one embodiment of the present application, the lift torque indicating module 20 further includes a calculating sub-module 23, where the calculating sub-module 23 is configured to calculate a slope corresponding to the current accelerator pedal opening and the current road slope through a preset function, and determine the slope as the slope.

In addition to slope determination from the lift torque slope list by the slope determination submodule 22, the transmission controller 100 may also perform slope calculation from a preset function by the calculation submodule 23. The preset function is f (x, y) =ax+by+c, where f (x, y) is a slope of torque rise and fall, x is a current accelerator opening, y is a current road slope, and a, b, c are three constants preset after the whole electric automobile adjustment test.

It should be noted that, the calculation sub-module 23 calculates the slope of the mechanical torque rise and fall by a preset function, which is also a conventional mature technical means existing in the art, and the present embodiment only divides the program of the conventional technical means to make it modularized, and does not involve improvement in the method.

The gearbox controller provided by the embodiment can be communicated with the whole vehicle controller through the information receiving module, the current accelerator pedal opening and the current road gradient are obtained, the slope of motor torque lifting which is most suitable for the current whole vehicle working condition is determined through the lifting torque indicating module according to the current accelerator pedal opening and the current road gradient, the torque values in the motor torque reducing process and the torque lifting process are determined according to the slope, and the motor controller is instructed to control the lifting of motor torque according to the torque values. Therefore, the lifting of the torque of the electric automobile in the gear shifting process is not based on a single fixed slope, the driving intention of a driver and the road condition can be combined to determine the slope of the lifting of the motor torque which is most suitable for the current working condition of the whole automobile, and the gear shifting time required in the gear shifting process and the gear shifting smoothness in the gear shifting process are balanced.

Fig. 3 schematically illustrates a structural diagram of a shift control system according to an embodiment of the present application, as shown in fig. 3, in an embodiment of the present application, there is provided a shift control system 1000, the shift control system 1000 including:

the above embodiment provides the transmission controller 100;

the whole vehicle controller 200 is connected with the gearbox controller 100 and is used for sending gear shifting information to the gearbox controller 100;

the motor controller 300 is connected with the gearbox controller 100, and is used for receiving the torque value and controlling the lifting of the motor torque according to the torque value.

The gear shift control system 1000 is used for controlling a gear shift process of an electric vehicle, and includes the gear box controller 100 in the above embodiment, the whole vehicle controller 200 for transmitting gear shift information to the gear box control, and the motor controller 300 for controlling the motor torque up-down according to the torque value transmitted by the gear box controller 100.

Fig. 4 schematically illustrates a flow chart of a gear shifting process performed by a gear shifting control system according to an embodiment of the present application, please refer to fig. 3 and fig. 4 together, after the gear box controller 100 receives the gear shifting information sent by the whole vehicle controller 200, it sends a slope of motor torque drop determined according to the current accelerator pedal opening and the current road slope in the gear shifting information to the motor controller 300, and determines a torque value in the motor torque drop process according to the slope, and the motor controller 300 performs torque drop according to the control motor of the torque value until the torque drops to a preset value (0N < m); after the motor is completed in torque reduction, the gearbox controller 100 controls a gear shifting executing mechanism in the gearbox to carry out gear shifting, after the gearbox is moved back to a neutral gear, the gearbox controller 100 starts to control the motor to start to enter a rotation speed adjustment stage through the motor controller 300, the gearbox controller 100 determines the target rotation speed of the motor according to the target gear contained in gear shifting information and sends the target rotation speed to the motor controller 300, and the motor controller 300 controls the motor to adjust the speed to the target rotation speed; after the rotational speed of the motor coincides with the target rotational speed, the transmission controller 100 starts to control the shift actuator to shift into the target gear; after the gear box is shifted, the motor starts to enter a torque recovery stage, the gear box controller 100 determines a motor torque rising slope according to the current accelerator pedal opening and the current road gradient, determines a torque value in the motor torque rising process according to the slope, and the motor controller 300 controls the motor to rise and twist according to the torque value, and when the motor torque is recovered to the magnitude before gear shifting, the whole gear shifting process is finished.

Through the gear shifting control system in the embodiment, the gearbox controller can communicate with the whole vehicle controller through the information receiving module, the current accelerator pedal opening and the current road gradient are obtained, the slope of motor torque lifting which is most suitable for the current whole vehicle working condition is determined through the lifting torque indicating module according to the current accelerator pedal opening and the current road gradient, then the torque values in the motor torque reducing process and the torque lifting process are determined according to the slope, and the motor controller is instructed to control the lifting of the motor torque according to the torque values. Therefore, the lifting of the torque of the electric automobile in the gear shifting process is not based on a single fixed slope, the driving intention of a driver and the road condition can be combined to determine the slope of the lifting of the motor torque which is most suitable for the current working condition of the whole automobile, and the gear shifting time required in the gear shifting process and the gear shifting smoothness in the gear shifting process are balanced.

In one embodiment of the present application, an electric vehicle is provided that includes the shift control system of the above embodiment.

The electric automobile provided by the embodiment of the application comprises the gear shifting control system in the embodiment, and can achieve the same technical effects as the gear shifting control system in the embodiment, so that repetition is avoided, and the repeated description is omitted.

The preferred embodiments of the present application have been described in detail above with reference to the accompanying drawings, but the present application is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solutions of the present application within the scope of the technical concept of the present application, and all the simple modifications belong to the protection scope of the present application.

In addition, the specific features described in the foregoing embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described in detail.

Moreover, any combination of the various embodiments of the present application may be made without departing from the spirit of the present application, which should also be considered as disclosed herein.

Claims (9)

1. A transmission controller, the transmission controller comprising:

the information receiving module is used for being connected with the whole vehicle controller and receiving gear shifting information sent by the whole vehicle controller, wherein the gear shifting information comprises the current accelerator pedal opening and the current road gradient;

the lifting torque indication module is connected with the information receiving module, is used for being connected with the motor controller, is used for determining the lifting slope of the motor torque according to the current accelerator pedal opening and the current road slope, and sends a torque value determined according to the slope to the motor controller so that the motor controller controls the lifting of the motor torque according to the torque value;

the lifting torque indication module comprises a lifting slope data storage sub-module and a slope determination sub-module, wherein the lifting slope data storage sub-module is used for storing a lifting torque slope list; the slope determination submodule is connected with the lifting slope data storage submodule and is used for determining slopes corresponding to the current accelerator pedal opening and the current road gradient according to the current accelerator pedal opening, the current road gradient and the lifting torque slope list.

2. The transmission controller of claim 1, wherein the shift information further includes a target gear, the transmission controller further comprising:

and the rotating speed control module is used for being connected with the motor controller, determining a target rotating speed according to the target gear and sending the target rotating speed to the motor controller so that the motor controller can adjust the rotating speed of the motor according to the target rotating speed.

3. The transmission controller of claim 2, further comprising:

the gear shifting control module is used for being connected with a gear shifting executing mechanism in the gearbox and controlling the gearbox to shift gears;

and the torque comparison module is connected with the gear-shifting control module, is used for being connected with the motor controller, and is used for obtaining real-time torque of the motor through the motor controller, and sending a gear-shifting instruction to the gear-shifting control module when the real-time torque is reduced to a preset value so that the gear-shifting control module controls the gearbox to shift.

4. A transmission controller according to claim 3, further comprising:

and the neutral gear prompt module is connected with the rotating speed control module and is used for sending a neutral gear prompt instruction to the rotating speed control module after the gear of the gearbox is shifted, so that the rotating speed control module determines the target rotating speed according to the target gear after receiving the neutral gear prompt instruction, and sends the target rotating speed to the motor controller.

5. The transmission controller of claim 2, further comprising:

the gear-shifting control module is used for being connected with a gear-shifting executing mechanism in the gearbox and controlling the gearbox to shift into the target gear;

the speed comparison module is connected with the gear-shifting control module, is used for being connected with the motor controller, and is used for obtaining the real-time speed of the motor through the motor controller, and when the real-time speed reaches the target speed, a gear-shifting instruction is sent to the gear-shifting control module so that the gear-shifting control module controls the gearbox to shift to the target gear.

6. The transmission controller of claim 5, further comprising:

and the gear-in completion prompt module is connected with the lifting torque indication module and is used for sending a gear-in completion prompt instruction to the lifting torque indication module after the gearbox is in gear to the target gear, so that the lifting torque indication module determines the slope of the rising of the motor torque according to the current accelerator pedal opening and the current road gradient after receiving the gear-in completion prompt instruction, and sends a torque value determined according to the slope to the motor controller.

7. The transmission controller of claim 1, wherein the lift torque indication module further comprises a calculation submodule for calculating a slope corresponding to the current accelerator pedal opening and the current road slope by a preset function and determining the slope as the slope.

8. A shift control system, the shift control system comprising:

a gearbox controller according to any one of claims 1 to 7;

the whole vehicle controller is connected with the gearbox controller and is used for sending the gear shifting information to the gearbox controller;

and the motor controller is connected with the gearbox controller and is used for receiving the torque value and controlling the lifting of the motor torque according to the torque value.

9. An electric vehicle comprising the shift control system according to claim 8.