CN117141490A - Gear shift control method and device for hybrid vehicle, electronic equipment and medium - Google Patents

Gear shift control method and device for hybrid vehicle, electronic equipment and medium Download PDF

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Publication number
CN117141490A
CN117141490A CN202311184263.8A CN202311184263A CN117141490A CN 117141490 A CN117141490 A CN 117141490A CN 202311184263 A CN202311184263 A CN 202311184263A CN 117141490 A CN117141490 A CN 117141490A
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China
Prior art keywords
target
torque value
value
engine
moment
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CN202311184263.8A
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Chinese (zh)
Inventor
朱兴军
张小田
陈玉杰
赵根锋
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Weichai Power Co Ltd
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Weichai Power Co Ltd
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Priority to CN202311184263.8A priority Critical patent/CN117141490A/en
Publication of CN117141490A publication Critical patent/CN117141490A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
    • B60W30/18—Propelling the vehicle
    • B60W30/19—Improvement of gear change, e.g. by synchronisation or smoothing gear shift
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
    • B60W20/15—Control strategies specially adapted for achieving a particular effect
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2710/00—Output or target parameters relating to a particular sub-units
    • B60W2710/06—Combustion engines, Gas turbines
    • B60W2710/0666—Engine torque
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2710/00—Output or target parameters relating to a particular sub-units
    • B60W2710/08—Electric propulsion units
    • B60W2710/083—Torque

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Hybrid Electric Vehicles (AREA)

Abstract

The application discloses a gear shift control method, a gear shift control device, electronic equipment and a gear shift control medium for a hybrid vehicle, which relate to the technical field of automobile electronics, and are used for determining a target calibration time corresponding to a gearbox gear at the current moment according to a preset corresponding relation between the gear and the calibration time if the vehicle is monitored to be in a gear shift process and the engine has smoke limit; determining a first whole vehicle required torque value of at least one target moment in a target calibration duration according to a current target smoke point torque value of an engine and a target torque upper limit value corresponding to the current engine speed; and aiming at any one target moment, after the target moment is reached, adjusting the output torque value of the motor according to the first whole vehicle required torque value of the target moment, so that the sum of the output torque value of the motor and the output torque value of the engine at the target moment is smaller than or equal to the first whole vehicle required torque value of the target moment. The method can effectively improve the dynamic stability of the gear shifting process.

Description

Gear shift control method and device for hybrid vehicle, electronic equipment and medium
Technical Field
The application relates to the technical field of automobile electronics, in particular to a gear shift control method and device of a hybrid vehicle, electronic equipment and medium.
Background
In order to meet increasingly stringent emission standards, the state six engines are currently provided with DPF particle traps for trapping soot particles in exhaust gas, and compared with the state five emission stage, the calibration based on the smoke limit fuel injection coefficient is usually large, so that the torque limitation of a matched AMT vehicle occurs early in the gear shifting and back-twisting process.
In the hybrid vehicle type, an engine controller ECU, a whole vehicle controller HCU, a motor controller MCU and the like are provided, and the controllers can realize cooperative work.
In the related art, in the gear shift control process of a hybrid vehicle, the vehicle is usually operated under the torque limitation caused by the smoke limit value through each controller, so that the power performance of the whole vehicle is poor, particularly, the slope working condition is caused, frequent upshift occurs due to limited torque output of an engine, and even the vehicle is stopped when serious. For the hybrid motor vehicle type, how to promote the dynamic stability of gear shifting process has positive meaning.
Disclosure of Invention
The embodiment of the application provides a gear shift control method, a gear shift control device, electronic equipment and a medium for a hybrid vehicle, which can coordinate a motor to carry out additional torque output based on the output torque of an engine when smoke limit occurs in a back torsion stage of the engine, and effectively improve the power stability in a gear shift process.
In a first aspect, an embodiment of the present application provides a shift control method of a hybrid vehicle, the method including:
if the vehicle is monitored to be in a gear shifting process and the smoke limit of the engine occurs, determining a target calibration time length corresponding to the gear of the gearbox at the current moment according to the corresponding relation between the preset gear and the calibration time length; the calibration time length represents the time length for lifting the torque of the engine from the smoke point torque value to the torque upper limit value;
determining a first whole vehicle required torque value of at least one target moment in the target calibration duration according to the current target smoke point torque value of the engine and a target torque upper limit value corresponding to the current engine speed;
and aiming at any one target moment, after the target moment is reached, adjusting the output torque value of the motor according to the first whole vehicle required torque value of the target moment, so that the sum of the output torque value of the motor and the output torque value of the engine at the target moment is smaller than or equal to the first whole vehicle required torque value of the target moment.
According to the method, if the vehicle is monitored to be in the gear shifting process and the smoke limit of the engine occurs, determining the target calibration time length corresponding to the gear of the gearbox at the current moment according to the corresponding relation between the preset gear and the calibration time length; the calibration time length represents the time length for lifting the torque of the engine from the smoke point torque value to the torque upper limit value; determining a first whole vehicle required torque value of at least one target moment in the target calibration duration according to the current target smoke point torque value of the engine and a target torque upper limit value corresponding to the current engine speed; and aiming at any one target moment, after the target moment is reached, adjusting the output torque value of the motor according to the first whole vehicle required torque value of the target moment, so that the sum of the output torque value of the motor and the output torque value of the engine at the target moment is smaller than or equal to the first whole vehicle required torque value of the target moment. According to the method, if the fact that the vehicle is in a gear shifting process and smoke intensity limitation occurs to an engine is monitored, a target calibration time length and a first whole vehicle required torque value of at least one target moment in the target calibration time length are determined, and according to the first whole vehicle required torque value of the target moment, the output torque value of a motor is adjusted, so that the sum of the output torque value of the motor and the output torque value of the engine at the target moment is smaller than or equal to the first whole vehicle required torque value of the target moment, and when smoke intensity limitation occurs to the engine in a back torsion stage, based on the output torque of the engine, the motor is coordinated to output additional torque, and the power stability of the gear shifting process can be effectively improved.
In one possible implementation manner, after the determining the target calibration duration corresponding to the transmission gear at the current moment, before determining the first whole vehicle required torque value at least one target moment in the target calibration duration, the method further includes:
taking the current torque value of the engine as the current target smoke point torque value of the engine; and
and determining the target torque upper limit value corresponding to the current rotating speed of the engine based on a preset mapping relation between the rotating speed and the torque upper limit value.
The method comprises the steps that the current torque value of the engine is used as the current target smoke point torque value of the engine; and determining the target torque upper limit value corresponding to the current rotating speed of the engine based on the preset mapping relation between the rotating speed and the torque upper limit value, so that the current target smoke point torque value and the target torque upper limit value of the engine can be determined more simply and efficiently, the calculated amount of the gear shift control process of the hybrid vehicle is reduced, and the power stability of the gear shift process is effectively improved.
In one possible implementation manner, determining the first whole vehicle required torque value of at least one target moment in the target calibration duration according to the current target smoke point torque value of the engine and the target torque upper limit value corresponding to the current engine speed includes:
Establishing a corresponding relation between time and a torque value according to the target calibration time length, the target smoke point torque value and the target torque upper limit value;
and determining a torque value corresponding to any one target moment based on the corresponding relation, and taking the determined torque value as the first whole vehicle required torque value corresponding to any one target moment, wherein adjacent target moments differ by a set interval.
According to the method, a corresponding relation between time and a torque value is established according to the target calibration time length, the target smoke point torque value and the target torque upper limit value; and determining a torque value corresponding to any one target moment based on the corresponding relation, and taking the determined torque value as the first whole vehicle required torque value corresponding to any one target moment, wherein adjacent target moments differ by a set interval. In the method, in the process of determining a first whole vehicle required torque value of at least one target moment in the target calibration time according to the current target smoke point torque value of the engine and the target torque upper limit value corresponding to the current engine rotating speed, a corresponding relation between time and torque values is firstly established, then the torque value corresponding to any one target moment is determined according to the corresponding relation for any one target moment, the first whole vehicle required torque value corresponding to any one target moment is obtained, the difference between adjacent target moments is set, the first whole vehicle required torque value of at least one target moment in the target calibration time is simply and efficiently determined, the calculated amount of a gear shifting control process of a hybrid vehicle is further reduced, and the power stability of the gear shifting process is more effectively improved.
In one possible implementation manner, after the target time arrives for any one target time, after the output torque value of the motor is adjusted according to the first whole vehicle required torque value of the target time, the method further includes:
after the target calibration time length, the output torque value of the motor is adjusted based on the second whole vehicle required torque value period, so that the sum of the adjusted output torque value of the motor and the output torque value of the engine at the adjustment time is smaller than or equal to the second whole vehicle required torque value; and the second whole vehicle required torque value is the target torque upper limit value.
The method further comprises the steps of: after the target calibration time length, the output torque value of the motor is adjusted based on the second whole vehicle required torque value period, so that the sum of the adjusted output torque value of the motor and the output torque value of the engine at the adjustment time is smaller than or equal to the second whole vehicle required torque value; and the second whole vehicle required torque value is the target torque upper limit value. According to the method, after the target calibration time, the output torque value of the motor is adjusted based on the second whole vehicle required torque value period, so that the sum of the adjusted output torque value of the motor and the output torque value of the engine at the adjustment time is smaller than or equal to the second whole vehicle required torque value, the purpose that the output torque value of the motor is adjusted based on the target torque upper limit value period after the target calibration time can be achieved, when smoke limit of the engine occurs in the back torsion stage, the motor is coordinated to output extra torque based on the output torque of the engine more simply, and the power stability of the gear shifting process is effectively improved.
In one possible implementation, the method further includes:
after the target calibration time period, periodically judging whether the difference value between the output torque value of the engine and the target torque upper limit value is smaller than or equal to a preset threshold value;
and if the judgment result is yes, stopping adjusting the output torque value of the motor based on the second whole vehicle required torque value period, and controlling the motor to stop outputting the torque value.
After the target calibration time, periodically judging whether the difference value between the output torque value of the engine and the target torque upper limit value is smaller than or equal to a preset threshold value; and if the judgment result is yes, stopping adjusting the output torque value of the motor based on the second whole vehicle required torque value period, and controlling the motor to stop outputting the torque value. According to the method, after the target calibration time, when the difference value between the output torque value of the engine and the target torque upper limit value is smaller than or equal to a preset threshold value, the output torque value of the motor is stopped to be adjusted periodically based on the second whole vehicle required torque value, and the motor is controlled to stop outputting the torque value, so that a motor torque introducing and exiting mechanism is provided, the whole vehicle power performance is ensured, the driving comfort is improved, and the power stability in the gear shifting process is effectively improved.
In a second aspect, an embodiment of the present application provides a shift control device for a hybrid vehicle, the device including:
the target duration determining unit is used for determining a target calibration duration corresponding to a gear of the gearbox at the current moment according to a preset corresponding relation between the gear and the calibration duration if the vehicle is monitored to be in a gear shifting process and the smoke limit of the engine occurs; the calibration time length represents the time length for lifting the torque of the engine from the smoke point torque value to the torque upper limit value;
the required torque determining unit is used for determining a first whole vehicle required torque value at least at one target moment in the target calibration duration according to the current target smoke point torque value of the engine and a target torque upper limit value corresponding to the current engine speed;
the torque coordination control unit is used for adjusting the output torque value of the motor according to the first whole vehicle required torque value of the target moment after the target moment is reached, so that the sum of the output torque value of the motor and the output torque value of the engine at the target moment is smaller than or equal to the first whole vehicle required torque value of the target moment.
In one possible implementation manner, the required torque determining unit is further configured to:
taking the current torque value of the engine as the current target smoke point torque value of the engine; and
and determining the target torque upper limit value corresponding to the current rotating speed of the engine based on a preset mapping relation between the rotating speed and the torque upper limit value.
In one possible implementation manner, the required torque determining unit is specifically configured to:
establishing a corresponding relation between time and a torque value according to the target calibration time length, the target smoke point torque value and the target torque upper limit value;
and determining a torque value corresponding to any one target moment based on the corresponding relation, and taking the determined torque value as the first whole vehicle required torque value corresponding to any one target moment, wherein adjacent target moments differ by a set interval.
In one possible implementation, the torque coordination control unit is further configured to:
after the target calibration time length, the output torque value of the motor is adjusted based on the second whole vehicle required torque value period, so that the sum of the adjusted output torque value of the motor and the output torque value of the engine at the adjustment time is smaller than or equal to the second whole vehicle required torque value; and the second whole vehicle required torque value is the target torque upper limit value.
In one possible implementation, the torque coordination control unit is further configured to:
after the target calibration time period, periodically judging whether the difference value between the output torque value of the engine and the target torque upper limit value is smaller than or equal to a preset threshold value;
and if the judgment result is yes, stopping adjusting the output torque value of the motor based on the second whole vehicle required torque value period, and controlling the motor to stop outputting the torque value.
In a third aspect, there is provided an electronic device comprising a processor and a memory, wherein the memory stores program code that, when executed by the processor, causes the processor to perform the steps of the shift control method of a hybrid vehicle of any one of the above.
In a fourth aspect, a computer-readable storage medium is provided, in which a computer program is stored, which when executed by a processor, implements the shift control method of the hybrid vehicle of any one of the above.
The technical effects caused by any implementation manner of the second aspect to the fourth aspect may be referred to the technical effects caused by the implementation manner of the first aspect, and are not described herein.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it will be apparent that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic flow chart of a gear shift control method of a hybrid vehicle according to an embodiment of the present application;
FIG. 2 is a flow chart of another method for controlling gear shifting of a hybrid vehicle according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a gear shift control device for a hybrid vehicle according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be described in further detail below with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Some terms in the embodiments of the present application are explained below to facilitate understanding by those skilled in the art.
(1) HCU: (Hybrid Control Unit, vehicle control unit): the HCU is also called as a hybrid power controller or a whole vehicle controller, is a core control component of the whole vehicle, and is used for collecting signals of an accelerator pedal, a brake pedal and other components, and controlling actions of the lower component controllers after corresponding judgment is made so as to drive the vehicle to normally run.
(2) Torque upper limit value: the torque upper limit value is the maximum torque of the engine at the running rotational speed, that is, the maximum torque value that is emitted when the throttle valve is fully opened at a certain engine rotational speed.
(3) SOC (State Of Charge): SOC is used to reflect the remaining capacity of a battery and is defined numerically as the ratio of the remaining capacity to the battery capacity, commonly expressed as a percentage. The value range is 0-1, and the battery is completely discharged when soc=0 and completely full when soc=1. The specific value of the battery SOC is related to parameters such as battery terminal voltage, charge-discharge current, internal resistance and the like.
(4) BMS (Battery Management System ): a Battery Management System (BMS) is an important tie connecting an on-vehicle power battery and an electric car. The BMS collects, processes and stores important information in the running process of the battery pack in real time, exchanges information with external equipment such as an entire vehicle control unit (HCU), and solves key problems of safety, usability, service life and the like in a battery system. The main function is to improve the utilization ratio of the battery, prevent the battery from overcharge and overdischarge, prolong the service life of the battery and monitor the state of the battery.
In order to reduce abnormal vehicle operation in a gear shift control process of a hybrid vehicle and improve power stability in the gear shift process, the embodiment of the application provides a gear shift control method, a gear shift control device, electronic equipment and a medium of the hybrid vehicle. In order to better understand the technical scheme provided by the embodiment of the application, the basic principle of the scheme is briefly described here.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the application described herein may be implemented in sequences other than those illustrated or otherwise described herein. The implementations described in the following exemplary examples do not represent all implementations consistent with the application. Rather, they are merely examples of apparatus and methods consistent with aspects of the application as detailed in the accompanying claims.
The following describes the technical scheme provided by the embodiment of the application with reference to the accompanying drawings.
In order to meet increasingly stringent emission standards, the state six engines are currently provided with DPF particle traps for trapping soot particles in exhaust gas, and compared with the state five emission stage, the calibration based on the smoke limit fuel injection coefficient is usually large, so that the torque limitation of a matched AMT vehicle occurs early in the gear shifting and back-twisting process.
In the hybrid vehicle type, an engine controller ECU, a whole vehicle controller HCU, a motor controller MCU and the like are provided, and the controllers can realize cooperative work.
In the related art, in the gear shift control process of a hybrid vehicle, the vehicle is usually operated under the torque limitation caused by the smoke limit value through each controller, so that the power performance of the whole vehicle is poor, particularly, the slope working condition is caused, frequent upshift occurs due to limited torque output of an engine, and even the vehicle is stopped when serious. For the hybrid motor vehicle type, how to promote the dynamic stability of gear shifting process has positive meaning.
In view of the above, an embodiment of the present application provides a gear shift control method, apparatus, electronic device, and medium for a hybrid vehicle, where if it is monitored that the vehicle is in a gear shift process and smoke limit occurs in an engine, a target calibration duration corresponding to a transmission gear at a current moment is determined according to a preset corresponding relationship between the gear and the calibration duration; the calibration time length represents the time length for lifting the torque of the engine from the smoke point torque value to the torque upper limit value; determining a first whole vehicle required torque value of at least one target moment in a target calibration duration according to a current target smoke point torque value of an engine and a target torque upper limit value corresponding to the current engine speed; and aiming at any one target moment, after the target moment is reached, adjusting the output torque value of the motor according to the first whole vehicle required torque value of the target moment, so that the sum of the output torque value of the motor and the output torque value of the engine at the target moment is smaller than or equal to the first whole vehicle required torque value of the target moment. According to the method, if the condition that the vehicle is in a gear shifting process and smoke intensity limitation occurs to the engine is monitored, a target calibration time length and at least one first whole vehicle required torque value at a target time within the target calibration time length are determined, the output torque value of the motor is adjusted according to the first whole vehicle required torque value at the target time, the sum of the output torque value of the motor at the target time and the output torque value of the engine is smaller than or equal to the first whole vehicle required torque value at the target time, and therefore when smoke intensity limitation occurs to the engine in a back torsion stage, the motor is coordinated to output additional torque based on the output torque of the engine, and the power stability of the gear shifting process is effectively improved.
The preferred embodiments of the present application will be described below with reference to the accompanying drawings of the specification, it being understood that the preferred embodiments described herein are for illustration and explanation only, and not for limitation of the present application, and embodiments of the present application and features of the embodiments may be combined with each other without conflict.
The following further explains a shift control method of a hybrid vehicle provided by the embodiment of the application. As shown in fig. 1, the method comprises the following steps:
step S101, if the vehicle is in the gear shifting process and the smoke limit of the engine is detected, determining a target calibration time length corresponding to the gear of the gearbox at the current moment according to the corresponding relation between the preset gear and the calibration time length.
The calibration time period represents the time period for increasing the torque of the engine from the smoke point torque value to the torque upper limit value.
In practice, the HCU can monitor in real time whether the vehicle is in the process of shifting and whether smoke limit occurs in the engine. If the vehicle is monitored to be in the gear shifting process and the smoke limit of the engine occurs, determining a target calibration time length corresponding to the gear of the gearbox at the current moment according to the corresponding relation between the preset gear and the calibration time length. The calibration time period represents the time period for increasing the torque of the engine from the smoke point torque value to the torque upper limit value.
For example, if the HCU monitors that the vehicle is in the gear shifting process and the smoke limit occurs in the engine, the HCU determines the current time t according to the corresponding relationship between the preset gear and the calibration time s_p 0 Gearbox gear g i Corresponding Target calibration duration target_s_p. The calibration period s_p represents a period of time for increasing the torque of the engine from the smoke point torque value to the torque upper limit value.
Table 1 shows an exemplary correspondence between a gear and a calibration period s_p.
TABLE 1
Gear gear 1 2 3 … i
Calibration duration s_p t 1 t 2 t 3 … t i
In connection with Table 1, assume that the current time t 0 Gearbox gear g i The value of (2) is gear 3 in table 1; if the HCU monitors that the vehicle is in the gear shifting process and the smoke limit occurs in the engine, the HCU determines the current time t according to the corresponding relation between the preset gear and the calibration time s_p as shown in the table 1 0 As can be seen from table 1, the Target calibration time length target_s_p corresponding to the gear 3 of (2), and the value of the Target calibration time length target_s_p is t 3 Illustratively, t 3 May be 5s.
In the embodiment of the application, after the target calibration time length corresponding to the gear of the gearbox at the current moment is determined, the current target smoke point torque value and the target torque upper limit value of the engine can be determined.
In one possible implementation, after determining the target calibration period corresponding to the transmission gear at the current time in step S101, the following procedure is performed: taking the current torque value of the engine as the current target smoke point torque value of the engine; and determining a target torque upper limit value corresponding to the current rotating speed of the engine based on a mapping relation between the preset rotating speed and the torque upper limit value.
In specific implementation, the preset mapping relationship between the rotational speed and the torque upper limit value may be determined based on an engine MAP obtained by bench testing the engine. The engine MAP includes a MAP of rotational speed and an upper torque limit.
The target smoke point torque value and the target torque upper limit value in the above embodiment may be used to determine the first whole vehicle required torque value at least one target time within the target calibration period.
Step S102, determining a first whole vehicle required torque value of at least one target moment in a target calibration duration according to a current target smoke point torque value of the engine and a target torque upper limit value corresponding to the current engine speed.
In specific implementation, after determining a target calibration duration corresponding to a gear of the gearbox at the current moment, the HCU determines a first whole vehicle required torque value at least at one target moment in the target calibration duration according to a current target smoke point torque value of the engine and a target torque upper limit value corresponding to the current engine speed.
The first vehicle-specific required torque value tor_vn_1 of at least one Target time point target_tp within the Target calibration period target_s_p is determined, for example, from the current Target smoke point torque value target_sp_tor of the engine and the Target torque upper limit value target_max_tor corresponding to the current engine speed speed_i.
In one possible implementation manner, step S102, determining the first whole vehicle required torque value at least at one target moment in the target calibration duration according to the current target smoke point torque value of the engine and the target torque upper limit value corresponding to the current engine speed may be implemented by the following steps:
and A01, establishing a corresponding relation between time and a torque value according to the target calibration time length, the target smoke point torque value and the target torque upper limit value.
Illustratively, a corresponding relation time-torque between the time and the torque value torque is established according to the Target calibration time length target_s_p, the Target smoke point torque value target_sp_tor and the Target torque upper limit value target_max_tor.
In some embodiments of the present application, the correspondence between time and torque value may be a linear equation that corresponds to a linear increase in torque from the target smoke point torque value to the target torque upper limit value within the target calibration period, for example, may be as follows:
Wherein,
t 0 the method comprises the steps of indicating the moment when the vehicle is monitored to be in the gear shifting process and the smoke limit of an engine occurs, and marking the moment as the current moment;
target_max_tor represents a Target torque upper limit value of the engine;
target_sp_tor represents a Target smoke point torque value of the engine;
target_s_p represents a Target calibration duration corresponding to a gear of the gearbox at the current moment;
time is expressed as t 0 As a starting point, an arbitrary point in time within a time period of the target calibration duration.
It will be appreciated that in other embodiments of the application, the correspondence between time and torque value may also be a nonlinear equation corresponding to a nonlinear increase in torque from the target smoke point torque value to the target torque upper limit value for a target calibrated duration.
And A02, determining a torque value corresponding to any one target moment based on the corresponding relation for any one target moment, and taking the determined torque value as a first whole vehicle required torque value corresponding to any one target moment, wherein adjacent target moments differ by a set interval.
For any one Target time target_tp, a torque value corresponding to any one Target time target_tp is determined based on a corresponding relation time-torque, and the determined torque value is used as a first whole vehicle required torque value tor_vn_1 corresponding to any one Target time target_tp, wherein a difference between any two adjacent Target times is set as a set interval per_set. For example, the value of the set interval per_set may be 5ms, 10ms, 0.1s, etc.
Step S103, aiming at any target moment, after the target moment is reached, according to the first whole vehicle required torque value of the target moment, the output torque value of the motor is adjusted, so that the sum of the output torque value of the motor and the output torque value of the engine at the target moment is smaller than or equal to the first whole vehicle required torque value at the target moment.
In particular embodiments, the output torque value of the motor is limited by a maximum value of the output torque of the motor. Aiming at any target moment, after the target moment is reached, determining a motor required torque value of a motor according to a first whole vehicle required torque value of the target moment; if the motor required torque value is smaller than or equal to the motor output torque maximum value, the motor output torque value is equal to the motor required torque value, and at the moment, the sum of the motor output torque value and the engine output torque value at the target moment is equal to the first whole vehicle required torque value at the target moment; if the motor demand torque value is greater than the motor output torque maximum value, the motor output torque value is equal to the motor output torque maximum value, and the sum of the motor output torque value and the engine output torque value at the target moment is smaller than the first whole vehicle demand torque value at the target moment.
In the embodiment of the application, for any target moment, after the target moment is reached, the output torque value of the motor is controlled according to the first whole vehicle required torque value of the target moment. The process of controlling the output torque value of the motor according to the first whole vehicle required torque value at the target moment preferably enables the sum of the output torque value of the motor at the target moment and the output torque value of the engine at the target moment to be equal to the first whole vehicle required torque value at the target moment; and if the output torque value of the motor at the target moment is the maximum value of the output torque of the motor, controlling the process of the output torque value of the motor according to the first whole vehicle required torque value at the target moment, so that the sum of the output torque value of the motor at the target moment and the output torque value of the engine at the target moment is smaller than or equal to the first whole vehicle required torque value at the target moment.
In the method of the embodiment, if the vehicle is monitored to be in a gear shifting process and the smoke limit occurs in the engine, determining a target calibration time length corresponding to the gear of the gearbox at the current moment according to the corresponding relation between the preset gear and the calibration time length; determining a first whole vehicle required torque value of at least one target moment in a target calibration duration according to a current target smoke point torque value of an engine and a target torque upper limit value corresponding to the current engine speed; and aiming at any one target moment, after the target moment is reached, adjusting the output torque value of the motor according to the first whole vehicle required torque value of the target moment, so that the sum of the output torque value of the motor and the output torque value of the engine at the target moment is smaller than or equal to the first whole vehicle required torque value of the target moment. The method can effectively improve the dynamic stability of the gear shifting process.
In some embodiments of the present application, the hybrid vehicle monitors the state of charge SOC of the power battery of the motor through the battery management system BMS, and for any one target time, when the state of charge SOC of the power battery of the motor is lower than a preset calibration value after the target time is reached, stops the first whole vehicle required torque value based on the target time, adjusts the output torque value of the motor, and controls the motor to stop outputting the torque value.
In one possible implementation manner, the process of adjusting the output torque value of the motor according to the first whole vehicle required torque value at the target moment is specifically implemented by the following steps:
and B01, obtaining an estimated torque value of the motor according to the first whole vehicle required torque value at the target moment and the output torque value of the engine at the target moment.
The estimated torque value represents an estimated torque value required to be provided by the motor.
And step B02, obtaining a real control torque value of the motor according to the estimated torque value and the maximum value of the motor output torque of the motor.
In the implementation, if the estimated torque value is smaller than or equal to the maximum value of the output torque of the motor, the actual control torque value of the motor is equal to the estimated torque value; and if the estimated torque value is larger than the maximum value of the motor output torque, the actual control torque value of the motor is equal to the maximum value of the motor output torque.
And step B03, adjusting the output torque value of the motor to be a real control torque value.
Specifically, the hybrid vehicle adjusts the output torque value of the motor so that the value of the output torque value of the motor becomes the actual control torque value, that is, so that the value of the output torque value of the motor of the hybrid vehicle coincides with the value of the actual control torque value.
In one possible implementation manner, in step S103, after the target time arrives for any one target time, according to the first whole vehicle required torque value at the target time, after adjusting the output torque value of the motor, the following steps are further executed: after the target calibration time length, the output torque value of the motor is adjusted periodically based on the second whole vehicle required torque value, so that the sum of the adjusted output torque value of the motor and the output torque value of the engine at the adjustment time is smaller than or equal to the second whole vehicle required torque value; the second whole vehicle required torque value is a target torque upper limit value.
In the specific implementation, the period adopted in the process of adjusting the output torque value of the motor based on the period of the second whole vehicle required torque value may be consistent with a preset interval for the time difference between adjacent target moments in the process of determining the first whole vehicle required torque value of at least one target moment in the target calibration duration according to the current target smoke point torque value of the engine and the target torque upper limit value corresponding to the current engine speed. For example, when the preset interval for the time difference between adjacent target times is 10ms, the period adopted in the process of adjusting the output torque value of the motor based on the second vehicle demand torque value period is also 10ms.
In one possible implementation manner, after the target calibration duration, in the process of adjusting the output torque value of the motor based on the second whole vehicle required torque value period, the following flow steps are further executed:
step C01, after the target calibration time, periodically judging whether the difference value between the output torque value of the engine and the target torque upper limit value is smaller than or equal to a preset threshold value;
and step C02, if the judgment result is yes, stopping adjusting the output torque value of the motor based on the second whole vehicle required torque value period, and controlling the motor to stop outputting the torque value.
In one possible implementation, the method further includes: after the target calibration duration, if the accelerator pedal is monitored to be reduced and/or the smoke limit value of the engine is monitored not to appear, stopping adjusting the output torque value of the motor based on the second whole vehicle required torque value period, and controlling the output torque value of the motor to be reduced according to a preset calibration slope.
In the implementation, after the target calibration time, the output torque value of the motor is controlled to be reduced according to the preset calibration slope, which may be that the output torque value of the motor is reduced by a first torque adjustment amount. The first torque adjustment amount may be determined according to a calibration slope and a period employed in adjusting the output torque value of the motor based on the second vehicle demand torque value period.
In one possible implementation, the method further includes: and aiming at any one target moment, after the target moment is reached, if the accelerator pedal is monitored to be reduced and/or the smoke limit value of the engine is monitored not to appear, stopping adjusting the output torque value of the motor according to the first whole vehicle required torque value at the target moment, and controlling the output torque value of the motor to be reduced according to a preset calibration slope.
In the implementation, for any one target time, after the target time is reached, the output torque value of the control motor is reduced according to a preset calibration slope, and the output torque value of the motor can be reduced by a second torque adjustment amount. The second torque adjustment amount may be determined based on a set interval between the calibration slope and the adjacent target time phase difference.
According to the gear shift control method of the hybrid vehicle, if the vehicle is monitored to be in the gear shift process and the smoke limit of the engine occurs, the target calibration time length corresponding to the gear of the gearbox at the current moment is determined according to the corresponding relation between the preset gear and the calibration time length; the calibration time length represents the time length for lifting the torque of the engine from the smoke point torque value to the torque upper limit value; determining a first whole vehicle required torque value of at least one target moment in a target calibration duration according to a current target smoke point torque value of an engine and a target torque upper limit value corresponding to the current engine speed; and aiming at any one target moment, after the target moment is reached, adjusting the output torque value of the motor according to the first whole vehicle required torque value of the target moment, so that the sum of the output torque value of the motor and the output torque value of the engine at the target moment is smaller than or equal to the first whole vehicle required torque value of the target moment. According to the method, if the condition that the vehicle is in a gear shifting process and smoke intensity limitation occurs to the engine is monitored, a target calibration time length and at least one first whole vehicle required torque value at a target time within the target calibration time length are determined, the output torque value of the motor is adjusted according to the first whole vehicle required torque value at the target time, the sum of the output torque value of the motor at the target time and the output torque value of the engine is smaller than or equal to the first whole vehicle required torque value at the target time, and therefore when smoke intensity limitation occurs to the engine in a back torsion stage, the motor is coordinated to output additional torque based on the output torque of the engine, and the power stability of the gear shifting process is effectively improved.
Another shift control method for a hybrid vehicle according to an embodiment of the present application is described below. The shift control method of the hybrid vehicle, as shown in fig. 2, includes the steps of:
step S201, if it is monitored that the vehicle is in a gear shifting process and smoke limit occurs in the engine, determining a target calibration time length corresponding to a gear of the gearbox at the current moment according to a preset corresponding relation between the gear and the calibration time length.
The calibration time period represents the time period for increasing the torque of the engine from the smoke point torque value to the torque upper limit value.
Step S202, taking the current torque value of the engine as the current target smoke point torque value of the engine; and determining a target torque upper limit value corresponding to the current rotating speed of the engine based on a mapping relation between the preset rotating speed and the torque upper limit value.
And step S203, establishing a corresponding relation between time and a torque value according to the target calibration time length, the target smoke point torque value and the target torque upper limit value.
Step S204, determining a torque value corresponding to any one target time based on the corresponding relation for any one target time, and taking the determined torque value as a first whole vehicle required torque value corresponding to any one target time, wherein adjacent target times differ by a set interval.
Step S205, for any one target moment, after the target moment is reached, according to the first whole vehicle required torque value of the target moment, the output torque value of the motor is adjusted, so that the sum of the output torque value of the motor and the output torque value of the engine at the target moment is smaller than or equal to the first whole vehicle required torque value at the target moment.
Step S206, after the target calibration time, adjusting the output torque value of the motor based on the second whole vehicle required torque value period, so that the sum of the adjusted output torque value of the motor and the output torque value of the engine at the adjustment time is smaller than or equal to the second whole vehicle required torque value; the second whole vehicle required torque value is a target torque upper limit value.
Step S207, after the target calibration time period, periodically judging whether the difference value between the output torque value of the engine and the target torque upper limit value is smaller than or equal to a preset threshold value; and if the judgment result is yes, stopping periodically adjusting the output torque value of the motor based on the second whole vehicle required torque value, and controlling the motor to stop outputting the torque value.
The process of the shift control of the hybrid vehicle in steps S201 to S207 may be performed with reference to the specific process of the foregoing embodiment, and the same is not repeated here.
The gear shift control method of the hybrid vehicle is simple and easy to implement, achieves the purpose of gear shift control of the hybrid vehicle through program setting, optimizes the gear shift control of the hybrid vehicle, stops adjusting the output torque value of the motor based on the second whole vehicle required torque value period when the difference value between the output torque value of the engine and the target torque upper limit value is smaller than or equal to a preset threshold value after target calibration duration is achieved, and controls the motor to stop outputting the torque value, so that a motor torque introducing and exiting mechanism is provided, the whole vehicle power performance is ensured, the driving comfort is improved, the power stability of the gear shift process is effectively improved, the stability of the hybrid vehicle is improved, and the driving safety of the gear shift process of the hybrid vehicle is improved.
Based on the same inventive concept, the embodiment of the application also provides a gear shift control device of the hybrid vehicle. As shown in fig. 3, the apparatus includes:
the target duration determining unit 301 is configured to determine, if it is monitored that the vehicle is in a gear shifting process and the smoke limit occurs in the engine, a target calibration duration corresponding to a transmission gear at a current moment according to a preset corresponding relationship between the gear and the calibration duration; the calibration time length represents the time length for lifting the torque of the engine from the smoke point torque value to the torque upper limit value;
A required torque determining unit 302, configured to determine a first whole vehicle required torque value at least at one target moment within a target calibration duration according to a current target smoke point torque value of the engine and a target torque upper limit value corresponding to a current engine speed;
the torque coordination control unit 303 is configured to adjust, for any one of the target moments, the output torque value of the motor according to the first whole vehicle required torque value at the target moment after the target moment is reached, so that the sum of the output torque value of the motor at the target moment and the output torque value of the engine is smaller than or equal to the first whole vehicle required torque value at the target moment.
In one possible implementation, the required torque determining unit 302 is further configured to:
taking the current torque value of the engine as the current target smoke point torque value of the engine; and
and determining a target torque upper limit value corresponding to the current rotating speed of the engine based on a preset mapping relation between the rotating speed and the torque upper limit value.
In one possible implementation, the required torque determining unit 302 is specifically configured to:
establishing a corresponding relation between time and a torque value according to the target calibration time length, the target smoke point torque value and the target torque upper limit value;
And determining a torque value corresponding to any one target moment based on the corresponding relation aiming at any one target moment, and taking the determined torque value as a first whole vehicle required torque value corresponding to any one target moment, wherein adjacent target moments differ by a set interval.
In one possible implementation, the torque coordination control unit 303 is further configured to:
after the target calibration time length, the output torque value of the motor is adjusted periodically based on the second whole vehicle required torque value, so that the sum of the adjusted output torque value of the motor and the output torque value of the engine at the adjustment time is smaller than or equal to the second whole vehicle required torque value; the second whole vehicle required torque value is a target torque upper limit value.
In one possible implementation, the torque coordination control unit 303 is further configured to:
after the target calibration time length, periodically judging whether the difference value between the output torque value of the engine and the target torque upper limit value is smaller than or equal to a preset threshold value;
and if the judgment result is yes, stopping periodically adjusting the output torque value of the motor based on the second whole vehicle required torque value, and controlling the motor to stop outputting the torque value.
Based on the same technical concept, the embodiment of the present application further provides an electronic device, and referring to fig. 4, the electronic device is configured to implement the methods described in the above embodiments of the methods, for example, implement the method shown in fig. 1, where the electronic device may include a memory 401, a processor 402, an input unit 403, and a display panel 404.
A memory 401 for storing a computer program executed by the processor 402. The memory 401 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function, and the like; the storage data area may store data created according to the use of the electronic device, etc. The processor 402 may be a central processing unit (central processing unit, CPU), or a digital processing unit, etc. An input unit 403 may be used to obtain user instructions entered by a user. The display panel 404 is configured to display information input by a user or information provided to the user, and in the embodiment of the present application, the display panel 404 is mainly configured to display interfaces of applications in the terminal device and control entities displayed in the display interfaces. Alternatively, the display panel 404 may be configured in the form of a liquid crystal display (liquid crystal display, LCD) or an OLED (organic light-emitting diode) or the like.
The specific connection medium among the memory 401, the processor 402, the input unit 403, and the display panel 404 is not limited in the embodiment of the present application. In the embodiment of the present application, the memory 401, the processor 402, the input unit 403 and the display panel 404 are connected through the bus 405 in fig. 4, the bus 405 is shown by a thick line in fig. 4, and the connection manner between other components is only schematically illustrated, but not limited thereto. The bus 405 may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown in fig. 4, but not only one bus or one type of bus.
The memory 401 may be a volatile memory (RAM) such as a random-access memory (RAM); the memory 401 may also be a nonvolatile memory (non-volatile memory), such as a read-only memory, a flash memory (flash memory), a Hard Disk Drive (HDD) or a Solid State Drive (SSD), or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited thereto. Memory 401 may be a combination of the above.
A processor 402 for invoking a computer program stored in the memory 401 to perform the method of the embodiment as shown in fig. 1.
The embodiment of the application also provides a computer readable storage medium which stores computer executable instructions required to be executed by the processor and contains a program for executing the processor.
In some possible embodiments, aspects of a gear shift control method of a hybrid vehicle provided by the present application may also be implemented in the form of a program product comprising program code for causing a terminal device to perform the steps of the gear shift control method of a hybrid vehicle according to the various exemplary embodiments of the present application described above in the present specification, when the program product is run on the terminal device. For example, the electronic device may perform the embodiment shown in FIG. 2.
The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium would include the following: an electrical connection having one or more wires, a portable disk, a hard disk, random Access Memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
A shift control program product for a hybrid vehicle according to embodiments of the present application may employ a portable compact disc read-only memory (CD-ROM) and include program code and may run on a computing device. However, the program product of the present application is not limited thereto, and in this document, a readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
The readable signal medium may include a data signal propagated in baseband or as part of a carrier wave with readable program code embodied therein. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A readable signal medium may also be any readable medium that is not a readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Program code for carrying out operations of the present application may be written in any combination of one or more programming languages, including an entity oriented programming language such as Java, C++ or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device, partly on a remote computing device, or entirely on the remote computing device or server. In the case of remote computing devices, the remote computing device may be connected to the user computing device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computing device (e.g., connected via the Internet using an Internet service provider).
It should be noted that although several units or sub-units of the apparatus are mentioned in the above detailed description, such a division is merely exemplary and not mandatory. Indeed, the features and functions of two or more of the elements described above may be embodied in one element in accordance with embodiments of the present application. Conversely, the features and functions of one unit described above may be further divided into a plurality of units to be embodied.
Furthermore, although the operations of the methods of the present application are depicted in the drawings in a particular order, this is not required to either imply that the operations must be performed in that particular order or that all of the illustrated operations be performed to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step to perform, and/or one step decomposed into multiple steps to perform.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable file processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable file processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable file processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable file processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims (10)

1. A shift control method of a hybrid vehicle, characterized by comprising:
If the vehicle is monitored to be in a gear shifting process and the smoke limit of the engine occurs, determining a target calibration time length corresponding to the gear of the gearbox at the current moment according to the corresponding relation between the preset gear and the calibration time length; the calibration time length represents the time length for lifting the torque of the engine from the smoke point torque value to the torque upper limit value;
determining a first whole vehicle required torque value of at least one target moment in the target calibration duration according to the current target smoke point torque value of the engine and a target torque upper limit value corresponding to the current engine speed;
and aiming at any one target moment, after the target moment is reached, adjusting the output torque value of the motor according to the first whole vehicle required torque value of the target moment, so that the sum of the output torque value of the motor and the output torque value of the engine at the target moment is smaller than or equal to the first whole vehicle required torque value of the target moment.
2. The method of claim 1, wherein after the determining the target calibration period corresponding to the transmission gear at the current time, before the determining the first vehicle-by-vehicle required torque value at the at least one target time within the target calibration period, further comprises:
Taking the current torque value of the engine as the current target smoke point torque value of the engine; and
and determining the target torque upper limit value corresponding to the current rotating speed of the engine based on a preset mapping relation between the rotating speed and the torque upper limit value.
3. The method of claim 1, wherein determining a first vehicle-by-vehicle demand torque value for at least one target time within the target calibration period based on the current target smoke point torque value for the engine and a target torque upper limit corresponding to a current engine speed comprises:
establishing a corresponding relation between time and a torque value according to the target calibration time length, the target smoke point torque value and the target torque upper limit value;
and determining a torque value corresponding to any one target moment based on the corresponding relation, and taking the determined torque value as the first whole vehicle required torque value corresponding to any one target moment, wherein adjacent target moments differ by a set interval.
4. A method according to any one of claims 1 to 3, wherein, for any one of the target moments, after the target moment is reached, adjusting the output torque value of the motor according to the first whole vehicle required torque value at the target moment, further comprises:
After the target calibration time length, the output torque value of the motor is adjusted based on the second whole vehicle required torque value period, so that the sum of the adjusted output torque value of the motor and the output torque value of the engine at the adjustment time is smaller than or equal to the second whole vehicle required torque value; and the second whole vehicle required torque value is the target torque upper limit value.
5. The method according to claim 4, wherein the method further comprises:
after the target calibration time period, periodically judging whether the difference value between the output torque value of the engine and the target torque upper limit value is smaller than or equal to a preset threshold value;
and if the judgment result is yes, stopping adjusting the output torque value of the motor based on the second whole vehicle required torque value period, and controlling the motor to stop outputting the torque value.
6. A shift control device of a hybrid vehicle, characterized by comprising:
the target duration determining unit is used for determining a target calibration duration corresponding to a gear of the gearbox at the current moment according to a preset corresponding relation between the gear and the calibration duration if the vehicle is monitored to be in a gear shifting process and the smoke limit of the engine occurs; the calibration time length represents the time length for lifting the torque of the engine from the smoke point torque value to the torque upper limit value;
The required torque determining unit is used for determining a first whole vehicle required torque value at least at one target moment in the target calibration duration according to the current target smoke point torque value of the engine and a target torque upper limit value corresponding to the current engine speed;
the torque coordination control unit is used for adjusting the output torque value of the motor according to the first whole vehicle required torque value of the target moment after the target moment is reached, so that the sum of the output torque value of the motor and the output torque value of the engine at the target moment is smaller than or equal to the first whole vehicle required torque value of the target moment.
7. The apparatus of claim 6, wherein the required torque determination unit is further configured to:
taking the current torque value of the engine as the current target smoke point torque value of the engine; and
and determining the target torque upper limit value corresponding to the current rotating speed of the engine based on a preset mapping relation between the rotating speed and the torque upper limit value.
8. The device according to claim 6, wherein the required torque determination unit is specifically configured to:
Establishing a corresponding relation between time and a torque value according to the target calibration time length, the target smoke point torque value and the target torque upper limit value;
and determining a torque value corresponding to any one target moment based on the corresponding relation, and taking the determined torque value as the first whole vehicle required torque value corresponding to any one target moment, wherein adjacent target moments differ by a set interval.
9. An electronic device comprising a processor and a memory, wherein the memory stores program code that, when executed by the processor, causes the processor to perform the steps of the method of any of claims 1-5.
10. A computer-readable storage medium having a computer program stored therein, characterized in that: the computer program, when executed by a processor, implements the method of any of claims 1-5.
CN202311184263.8A 2023-09-14 2023-09-14 Gear shift control method and device for hybrid vehicle, electronic equipment and medium Pending CN117141490A (en)

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CN202311184263.8A CN117141490A (en) 2023-09-14 2023-09-14 Gear shift control method and device for hybrid vehicle, electronic equipment and medium

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CN202311184263.8A CN117141490A (en) 2023-09-14 2023-09-14 Gear shift control method and device for hybrid vehicle, electronic equipment and medium

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