CN117302183A - Hybrid system power control method and device, electronic equipment and vehicle - Google Patents

Hybrid system power control method and device, electronic equipment and vehicle Download PDF

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Publication number
CN117302183A
CN117302183A CN202210698250.1A CN202210698250A CN117302183A CN 117302183 A CN117302183 A CN 117302183A CN 202210698250 A CN202210698250 A CN 202210698250A CN 117302183 A CN117302183 A CN 117302183A
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China
Prior art keywords
vehicle
power
ejection starting
driving motor
condition
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CN202210698250.1A
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Chinese (zh)
Inventor
陈淑江
刘志刚
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Great Wall Motor Co Ltd
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Great Wall Motor Co Ltd
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Priority to CN202210698250.1A priority Critical patent/CN117302183A/en
Publication of CN117302183A publication Critical patent/CN117302183A/en
Pending legal-status Critical Current

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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
    • 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
    • B60W20/19—Control strategies specially adapted for achieving a particular effect for achieving enhanced acceleration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
    • 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
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B60W20/20—Control strategies involving selection of hybrid configuration, e.g. selection between series or parallel configuration
    • 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
    • B60W20/30—Control strategies involving selection of transmission gear ratio
    • 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
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/06—Combustion engines, Gas turbines
    • B60W2510/0604—Throttle position
    • 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
    • B60W2540/00—Input parameters relating to occupants
    • B60W2540/12—Brake pedal position
    • 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
    • B60W2710/02—Clutches
    • B60W2710/025—Clutch slip, i.e. difference between input and output speeds
    • 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)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Transportation (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The invention provides a hybrid system power control method, a hybrid system power control device, electronic equipment and a vehicle, and relates to the technical field of hybrid system power control. Firstly, determining whether a vehicle meets the triggering condition of an ejection starting function; then, under the condition that the vehicle is determined to meet the triggering condition of the ejection starting function, the ejection starting function is executed, the vehicle is controlled to enter a clutch sliding running state, and the first target torque output by the engine and the second target torque output by the driving motor are determined; finally, the actual output torque of the engine and the actual output torque of the drive motor are adjusted based on the first target torque and the second target torque. In the invention, in the process of ejection starting, the vehicle can be controlled to enter the clutch sliding state, so that additional driving force is provided for the vehicle, the power performance of the vehicle is greatly improved, the time required for accelerating the vehicle is greatly reduced, and the driving experience of a user is improved.

Description

Hybrid system power control method and device, electronic equipment and vehicle
Technical Field
The invention relates to the technical field of hybrid system power control, in particular to a hybrid system power control method, a hybrid system power control device, electronic equipment and a vehicle.
Background
Hybrid vehicles typically include an internal combustion engine and an electric machine. A front drive DHT (Dedicated Hybrid Transmission, hybrid dedicated transmission system), when the vehicle speed is above 40kph, the clutch is engaged, a direct drive first or second gear is entered, the engine is involved in driving the vehicle, and when the vehicle speed is below 40kph, the vehicle is driven by the motor, entering series or EV mode. Therefore, when the vehicle speed is in the range of 0-40kph, the acceleration time of the vehicle depends on the driving motor of the vehicle.
In the related art, the starting acceleration time of a vehicle depends on the driving motor of the vehicle, so when the motor power of the vehicle reaches the limit, the acceleration performance of the vehicle cannot be continuously improved, and the requirement of the vehicle on the starting acceleration time cannot be met.
Disclosure of Invention
The embodiment of the invention provides a hybrid system power control method, a hybrid system power control device, electronic equipment and a vehicle, and aims to solve or partially solve the problems that the acceleration performance of the vehicle can not be continuously improved and the requirement of the vehicle on starting acceleration time can not be met.
In order to solve the technical problems, the invention is realized as follows:
in a first aspect, an embodiment of the present invention provides a method for controlling power of a hybrid system, where the method includes:
determining whether the vehicle meets the triggering condition of the ejection starting function;
executing the launch starting function under the condition that the vehicle is determined to meet the triggering condition of the launch starting function;
controlling the vehicle to enter a clutch sliding friction running state, and determining a first target torque output by an engine and a second target torque output by a driving motor;
the actual output torque of the engine and the actual output torque of the drive motor are adjusted based on the first target torque and the second target torque.
Optionally, determining whether the vehicle satisfies the triggering condition of the launch start function includes:
acquiring starting data of a vehicle, and determining whether the vehicle meets a first execution condition of ejection starting according to the starting data;
under the condition that the vehicle meets the first execution condition of ejection starting, determining the relationship between the maximum dischargeable power of the vehicle battery and the power of the driving motor;
and determining whether the vehicle meets a second execution condition of ejection starting according to the relation between the maximum dischargeable power of the vehicle battery and the power of the driving motor.
Optionally, the first execution condition of the launch start includes:
the current opening of the accelerator pedal of the vehicle is larger than the preset opening, and the brake pedal is positioned at a braking position;
the current driving mode of the vehicle is a sport mode.
Optionally, determining whether the vehicle meets the second execution condition of launch starting according to the magnitude relation between the maximum dischargeable power of the vehicle battery and the power of the driving motor includes:
if the maximum dischargeable power of the vehicle battery is greater than or equal to the power of the driving motor, determining that the vehicle meets a second execution condition of ejection starting;
and if the maximum dischargeable power of the vehicle battery is smaller than the power of the driving motor, determining that the vehicle does not meet the second execution condition of the ejection starting.
Optionally, after the step of determining that the vehicle does not meet the second execution condition for launch, the method further comprises:
calculating a power difference value between the maximum dischargeable power of the vehicle battery and the power of the driving motor;
if the power difference is larger than the first threshold and smaller than the second threshold, the engine is determined to be an auxiliary power source, the auxiliary power source drives the generator to charge the vehicle battery, and the ejection starting function is continuously executed;
and if the power difference value is larger than the second threshold value, closing the ejection starting function.
Optionally, the method further comprises:
creating an execution number counter of the ejection starting function;
after each execution of the ejection starting function, the execution times counter is subjected to 1 adding operation;
and acquiring the execution times of the ejection starting function recorded by the execution times counter, and prohibiting the vehicle from starting the ejection starting function when the execution times are larger than a preset third threshold value.
In a second aspect, an embodiment of the present invention provides a hybrid system power control apparatus, including:
the judging module is used for determining whether the vehicle meets the triggering condition of the ejection starting function or not;
the execution module is used for executing the ejection starting function under the condition that the vehicle is determined to meet the triggering condition of the ejection starting function;
the control module is used for controlling the vehicle to enter a clutch sliding friction running state and determining a first target torque output by the engine and a second target torque output by the driving motor;
and an adjustment module for adjusting an actual output torque of the engine and an actual output torque of the drive motor based on the first target torque and the second target torque.
Optionally, the judging module includes:
the first acquisition sub-module is used for acquiring starting data of the vehicle and determining whether the vehicle meets a first execution condition of ejection starting according to the starting data of the vehicle;
the second acquisition submodule is used for acquiring the relation between the maximum dischargeable power of the vehicle battery and the power of the driving motor under the condition that the vehicle meets the first execution condition of ejection starting;
and the judging sub-module is used for determining whether the vehicle meets a second execution condition of ejection starting according to the relation between the maximum dischargeable power of the vehicle battery and the power of the driving motor.
A third aspect of the embodiment of the invention provides an electronic device, which includes a processor, a communication interface, a memory and a communication bus, where the processor, the communication interface, and the memory complete communication with each other through the communication bus;
a memory for storing a computer program;
and the processor is used for realizing the method steps provided by the first aspect of the embodiment of the invention when executing the program stored in the memory.
A fourth aspect of the embodiment of the present invention proposes a vehicle, which comprises a processor for implementing the method steps according to the first aspect of the embodiment of the present invention when executed.
The embodiment of the invention has the following advantages:
firstly, determining whether a vehicle meets the triggering condition of an ejection starting function; then, under the condition that the vehicle is determined to meet the triggering condition of the ejection starting function, the ejection starting function is executed, the vehicle is controlled to enter a clutch sliding running state, and the first target torque output by the engine and the second target torque output by the driving motor are determined; finally, the actual output torque of the engine and the actual output torque of the drive motor are adjusted based on the first target torque and the second target torque. According to the invention, in the process of ejection starting, the vehicle is controlled to enter the clutch sliding state, so that additional driving force is provided for the vehicle, the power performance of the vehicle is greatly improved, the time required for accelerating the vehicle is greatly reduced, and the driving experience of a user is improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of steps of a method for controlling power of a hybrid system according to an embodiment of the present invention;
fig. 2 is a schematic block diagram of a hybrid system power control device according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
The DHT architecture, in which optimal operation in multiple modes is achieved, comprises an engine (ICE), a Generator (GM), and a driving motor (TM), the engine (ICE) is mechanically connected to the clutch (C0) respectively, the engine (ICE) is mechanically connected to the Generator (GM) through a gear set, the Generator (GM) converts the mechanical energy of the engine (ICE) into electrical energy and stores it in a vehicle battery, the vehicle battery provides the driving motor (TM) with electrical energy, and the driving motor (TM) transmits power to the wheels through a two-stage gear set. For a DHT architecture hybrid vehicle, which includes different driving modes, a purely electric driving mode in which the generator is shut down, the drive motor (TM) is powered by the vehicle battery alone, and transmits power to the wheels through a two-stage gear set. In a series driving mode, in which the Generator (GM) is operated, but not coupled to the clutch, and the mechanical energy of the engine is converted to electrical energy by the Generator (GM), and the driving motor (TM) is supplied with electrical energy by the vehicle battery, which transfers power to the wheels through the two-stage gear set.
In the starting process of the vehicle, taking an acceleration process from 0kph to 100kph as an example, the vehicle is driven by adopting a series driving mode or a pure electric driving mode in the acceleration process of 0kph to 40 kph. Therefore, on the premise that the acceleration time of 40kph-100kph can not be optimized, the time required by the acceleration process of 0kph-40kph is reduced, the acceleration time of the acceleration process of 0kph-100kph can be shortened, and the hundred kilometer acceleration performance of the vehicle is improved. During acceleration of 0kph-40kph, the vehicle is driven by the drive motor (TM), and the maximum power of the drive motor (TM) itself determines its power level. Therefore, how to increase the driving force of the vehicle during acceleration of 0kph to 40kph is a technical problem faced by the present application.
The inventors found that: in the starting stage, namely, in the process of 0kph-6kph, the conventional vehicle with the non-hybrid system cannot enter a first gear, so that the clutch is in a slip film state to drive the vehicle to speed up until the vehicle speed is greater than 6kph, and the clutch enters the first gear, so that the clutch is in the slip film state to provide driving force for the vehicle.
Based on the above, the inventor proposes the inventive concept of the application, and when the vehicle is in a preset vehicle speed range (0 kph-40 kph), the full throttle starting process is controlled, clutch slip control is controlled, and the engine is utilized to provide additional driving force for the vehicle. The application range of the technical scheme is not limited to a hybrid architecture, and the hybrid architecture is applicable to all low-speed ranges and has a series connection and clutch slip start architecture.
The embodiment of the invention provides a hybrid system power control method, referring to fig. 1, fig. 1 shows a step flow chart of the hybrid system power control method in the embodiment of the application, and the method comprises the following steps:
s101, determining whether the vehicle meets the triggering condition of the ejection starting function.
In this embodiment, the launch start function is intended to activate the drive system to output maximum torque or maximum power when the vehicle is accelerating from rest, thereby shortening the acceleration time of the entire vehicle. The step of judging whether the vehicle meets the triggering condition of the ejection starting function specifically comprises the following steps:
s101-1, acquiring starting data of the vehicle, and determining whether the vehicle meets a first execution condition of ejection starting according to the starting data of the vehicle.
In the present embodiment, when the user is using the vehicle, the effect can be achieved by the vehicle launch function so that the speed of the vehicle can be raised to a high value in a short time. The start data of the vehicle may include: the pedal data of the vehicle and the driving mode type of the vehicle can judge whether the vehicle currently meets the first execution condition of the ejection starting function or not based on the starting data, and the steps specifically comprise:
s101-1-1: the current opening of the accelerator pedal of the vehicle is larger than the preset opening, and the brake pedal is positioned at the braking position.
S101-1-2: the current driving mode of the vehicle is a sport mode.
In this embodiment, the accelerator pedal opening signal and the brake pedal position signal are collected through the sensors corresponding to the accelerator pedal and the brake pedal, so as to obtain the accelerator pedal opening value a and the brake pedal position B, and when the accelerator pedal opening value a is greater than the preset threshold value C and the brake pedal position is the brake position, it is indicated that the pedal data of the vehicle meets the requirement. The driving mode may include: in various types such as economy mode, normal mode, sport mode or other modes, the magnitude and response time of the limiting value of the torque change of the power assembly are different according to the instruction information of the user in different driving modes. When the driving mode of the vehicle is a movement mode, the current opening of the accelerator pedal is larger than the preset opening, and the brake pedal is positioned at the braking position, the first execution condition for ejection starting is met.
After the first execution condition of the ejection starting is determined to be met by the vehicle, whether the second execution condition of the ejection starting is met by the vehicle is judged according to the relation between the vehicle battery and the vehicle driving motor, and if the first execution condition of the ejection starting is not met by the vehicle, the current judgment flow is exited, namely the ejection starting function is not executed by the vehicle. The step of determining whether the vehicle satisfies the second execution condition of launch start may include:
s101-2: and determining whether the vehicle meets a second execution condition of ejection starting according to the relation between the maximum dischargeable power of the vehicle battery and the power of the driving motor.
In this embodiment, when the maximum dischargeable power of the vehicle battery is greater than the driving motor power, it is indicated that the vehicle battery has sufficient capacity to power the driving motor, and when the maximum dischargeable power of the vehicle battery is less than the driving motor power, it is indicated that the vehicle battery does not have sufficient capacity to power the driving motor. And executing the ejection starting function, wherein the vehicle battery needs to be ensured to have enough capacity to provide power for the driving motor, and the step of determining whether the vehicle meets the second execution condition of ejection starting according to the relation between the maximum dischargeable power of the vehicle battery and the power of the driving motor comprises the following steps:
s101-2-1: if the maximum dischargeable power of the vehicle battery is greater than or equal to the power of the driving motor, determining that the vehicle meets a second execution condition of ejection starting;
s101-2-2: and if the maximum dischargeable power of the vehicle battery is smaller than the power of the driving motor, determining that the vehicle does not meet the second execution condition of the ejection starting.
In the embodiments of S101-2-1 to S101-2-2, the current discharge power of the vehicle battery is obtained, the current discharge power of the vehicle battery is related to the electric quantity of the vehicle battery, the higher the electric quantity of the vehicle battery is, the higher the current discharge power of the vehicle battery is, because when the ejection starting function is executed, the driving motor of the vehicle needs to be ensured to output at the maximum power, therefore, the driving motor power refers to the driving motor to be at the maximum power, if the maximum dischargeable power of the vehicle battery is greater than or equal to the maximum power of the driving motor, the driving motor can be ensured to operate at the maximum power, and if the maximum dischargeable power of the vehicle battery is less than the driving motor power, the driving motor cannot be ensured to operate at the maximum power, the ejection starting function cannot be realized, and therefore, the second execution condition of the ejection starting is satisfied. In the actual running process, the engine can transmit mechanical energy to the generator so as to convert the mechanical energy into electric energy and store the electric energy in a vehicle battery, thereby ensuring that the driving motor can run at the maximum power.
After the step of determining that the vehicle does not meet the second execution condition for launch, the method further includes:
s101-2-3: calculating a power difference value between the maximum dischargeable power of the vehicle battery and the power of the driving motor;
s101-2-4: if the power difference is larger than the first threshold value and smaller than the second threshold value, the engine is determined to be a first power source, the auxiliary power source drives the generator to charge the vehicle battery, and the ejection starting function is continuously executed;
s101-2-5: and if the power difference value is larger than the second threshold value, closing the ejection starting function.
In the embodiments of S101-2-3 to S101-2-5, after it is determined that the second execution condition of the launch is not satisfied due to the magnitude relation between the maximum dischargeable power of the vehicle battery and the power of the driving motor, a power difference C between the maximum dischargeable power of the vehicle battery and the power of the driving motor is calculated, and if the power difference C is greater than the first threshold and less than the second threshold, as an example, if the current dischargeable power of the vehicle battery is 160KW and the maximum power of the driving motor is 170KW, the absolute value C of the power difference between the maximum dischargeable power of the vehicle battery and the power of the driving motor is 10KW, the first threshold is 0KW, and the second threshold is 20KW, and if the power difference C is greater than the first threshold and less than the second threshold, during the launch of the vehicle, the engine of the vehicle may be used as an auxiliary power source, that is, a part of the mechanical energy of the engine is used to generate electricity, and charges the vehicle battery to enable the driving motor to run at the maximum power, thereby satisfying the second execution condition of the launch. If the power difference C is greater than the second threshold, for example, if the current discharge power of the vehicle battery is 140KW and the maximum power of the driving motor is 170KW, the power difference C between the maximum dischargeable power of the vehicle battery and the power of the driving motor is 30KW, the first threshold is 0KW, the second threshold is 20KW, and the power difference C is greater than the second threshold, in which case, even if the mechanical energy of the engine is used for power generation, the charging of the vehicle battery cannot be ensured that the driving motor can operate at the maximum power. Therefore, the vehicle cannot perform the launch start function, and the launch start function is turned off.
S102: and executing the ejection starting function under the condition that the vehicle is determined to meet the triggering condition of the ejection starting function.
In the present embodiment, when it is determined that the vehicle satisfies both the first execution condition and the second execution condition of the launch, the vehicle executes the launch function. I.e. the engine of the vehicle as a first power source and the drive motor of the vehicle as a second power source, so that the drive system of the vehicle outputs at maximum power.
S102: and executing the ejection starting function under the condition that the vehicle is determined to meet the triggering condition of the ejection starting function.
In the present embodiment, when it is determined that the vehicle satisfies both the first execution condition and the second execution condition of the launch, the vehicle executes the launch function. I.e. the engine of the vehicle as a first power source and the drive motor of the vehicle as a second power source, so that the drive system of the vehicle outputs at maximum power.
S103: the vehicle is controlled to enter a clutch slip operating state, and a first target torque output by the engine and a second target torque output by the drive motor are determined.
In this embodiment, S101-S102 may be determined by an HCU (Hybrid Control Unit, a hybrid vehicle controller) alone, or may be determined by a controller in which the HCU and the TCU (Transmission control unit, a transmission control unit) are combined, and after the launch start function is started, the clutch is controlled by the TCU controller or a controller in which the HCU and the TCU are combined, so that the vehicle enters a clutch slip running state. The clutch slip running state refers to a state of controlling the hydraulic control device so as to control the clutch of the vehicle, namely, a state similar to a state that a driver steps on a clutch pedal by foot, and because of the slip phenomenon between a driving part and a driven part of the clutch, the torque transmitted by the clutch can be gradually increased from zero, and the driving force of the vehicle is also gradually increased, so that the clutch is guaranteed to be in a slip state in full time under a serial working condition of 0-40kph, and in this mode, the vehicle then enters a direct driving mode, namely, the engine drives the vehicle by a gear set with a large speed ratio.
The target torque of the clutch is required to be controlled, the target torque of the clutch can be sent to the HCU controller through the TCU controller, the ascending gradient of the torque is controlled by the TCU controller, the effect of stepping on an accelerator pedal is simulated, the HCU controller controls the first target torque output by the engine, and the target torque of the clutch is the torque corresponding to the first gear of the vehicle in the direct drive mode. Therefore, the HCU controller is required to control the first target torque output by the engine to be able to follow the target torque of the clutch. As an example, if the target torque of the clutch is D and the output torque available to the generator is E, it may be determined that the first target torque of the engine output is D minus E, the second target torque of the drive motor output, that is, the torque of the drive motor operating at maximum power, and the second target torque of the drive motor output is controlled by the vehicle battery controller.
S104: the actual output torque of the engine and the actual output torque of the drive motor are adjusted based on the first target torque and the second target torque.
In this embodiment, after determining the first target torque output by the engine, the HCU controller transmits the first target torque to the engine and controls the output torque of the engine to be adjusted from the current torque to the first target torque, and similarly, after determining the second target torque output by the driving motor, the vehicle battery controller transmits the second target torque to the driving motor and controls the output torque of the driving motor to be adjusted from the current torque to the second target torque.
In the embodiment of S101-S104, after the vehicle is determined to enter the launch starting function, the driving motor is used as the first power source, the vehicle battery is controlled by the vehicle battery controller to provide driving current for the driving motor, electric energy is converted into mechanical energy and transmitted to the wheels, so that the driving motor can run at maximum power, meanwhile, the TCU controller controls the hydraulic device to enable the clutch and the engine to be in a semi-combined state and enter a clutch slipping state, the engine is used as the second power source, the mechanical energy of the engine is transmitted to the wheels, and therefore additional driving force is provided for the vehicle, required acceleration time of the vehicle in a preset speed range (0 kph-40 kph) is shorter, and acceleration performance of the vehicle is greatly improved.
In one possible embodiment, the method further comprises:
creating an execution number counter of the ejection starting function;
after each execution of the ejection starting function, the execution times counter is subjected to 1 adding operation;
and acquiring the execution times of the ejection starting function recorded by the execution times counter, and prohibiting the vehicle from starting the ejection starting function when the execution times are larger than a preset third threshold value.
In this embodiment, the clutch slip running state is adopted to provide additional driving force for the vehicle during the launch, so that the mechanical structure of the clutch itself is damaged to some extent. Therefore, it is necessary to limit the execution times of the ejection starting function, an execution times counter of the ejection starting function may be created in the TCU controller or the controller in which the HCU and the TCU are combined, and after each time the ejection starting function is executed by the vehicle, the execution times counter is added with 1, that is, from 0, the execution times of the ejection starting function of the vehicle is recorded, and the execution times of the ejection starting function of the vehicle are monitored in real time, and when the execution times of the ejection starting function is detected to be greater than a preset third threshold, a specific value of the third threshold is determined according to different vehicle types and acceleration performances, which is not limited in the application. When the third threshold value is exceeded, if the ejection starting function is continuously executed, irreversible loss is generated on the clutch of the vehicle, and the service life of the clutch of the vehicle is reduced, so that the vehicle is forbidden to use the ejection starting function under the condition, and the acceleration performance of the vehicle is guaranteed, and the service life of the vehicle is also guaranteed by setting the upper limit of the execution times of the ejection starting function.
In a feasible mode, a clutch temperature monitoring function can be set in a TCU controller or a controller combining the HCU and the TCU, namely, the running temperature of the clutch is acquired in real time through a temperature sensor arranged on the clutch, and when the running temperature is greater than a preset temperature threshold value, the ejection starting function is exited, so that a driving part and a driven part of the clutch are separated, the clutch failure caused by overhigh clutch temperature is avoided, and the service life of the clutch is prolonged.
The embodiment of the invention also provides a power control device of the hybrid system, referring to fig. 2, which shows the power control device of the hybrid system, the device can comprise the following modules:
a judging module 201, configured to determine whether the vehicle meets a triggering condition of an ejection starting function;
an execution module 202, configured to execute an ejection start function when it is determined that the vehicle meets a trigger condition of the ejection start function;
a control module 203 for controlling the vehicle to enter a clutch slip running state and determining a first target torque output by the engine and a second target torque output by the driving motor;
an adjustment module 204 for adjusting an actual output torque of the engine and an actual output torque of the drive motor based on the first target torque and the second target torque.
In one possible implementation, the determining module 201 includes:
the first acquisition sub-module is used for acquiring starting data of the vehicle and determining whether the vehicle meets a first execution condition of ejection starting according to the starting data of the vehicle;
the second acquisition submodule is used for acquiring the relation between the maximum dischargeable power of the vehicle battery and the power of the driving motor under the condition that the vehicle meets the first execution condition of ejection starting;
and the judging sub-module is used for determining whether the vehicle meets a second execution condition of ejection starting according to the relation between the maximum dischargeable power of the vehicle battery and the power of the driving motor.
In one possible implementation, the determining sub-module includes:
the first judging subunit is used for determining that the vehicle meets a second execution condition of ejection starting if the maximum dischargeable power of the vehicle battery is greater than or equal to the power of the driving motor;
and the second judging subunit is used for determining that the vehicle does not meet the second execution condition of ejection starting if the maximum dischargeable power of the vehicle battery is smaller than the power of the driving motor.
In one possible implementation, the determining module 201 further includes:
the calculating sub-module is used for calculating the power difference value between the maximum dischargeable power of the vehicle battery and the power of the driving motor;
the execution sub-module is used for determining the engine as an auxiliary power source if the power difference value is larger than a first threshold value and smaller than a second threshold value, and the auxiliary power source drives the generator to charge the vehicle battery and continuously executes the ejection starting function;
and the exit sub-module is used for closing the ejection starting function if the power difference value is larger than the second threshold value.
In a possible embodiment, the apparatus further comprises: the computing module, the computing module includes:
the creation sub-module is used for creating an execution frequency counter of the ejection starting function;
the accumulation sub-module is used for executing 1-adding operation on the execution times counter after executing the ejection starting function once;
the warning sub-module is used for acquiring the execution times of the ejection starting function recorded by the execution times counter, and prohibiting the vehicle from starting the ejection starting function when the execution times are greater than a preset third threshold value.
Based on the same inventive concept, another embodiment of the present invention provides an electronic device comprising a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface, the memory complete communication with each other through the communication bus,
a memory for storing a computer program;
and the processor is used for realizing the steps of the first aspect of the embodiment of the invention when executing the program stored in the memory.
The communication bus mentioned by the above terminal may be a peripheral component interconnect standard (Peripheral Component Interconnect, abbreviated as PCI) bus or an extended industry standard architecture (Extended Industry Standard Architecture, abbreviated as EISA) bus, etc. The communication bus may be classified as an address bus, a data bus, a control bus, or the like. For ease of illustration, the figures are shown with only one bold line, but not with only one bus or one type of bus. The communication interface is used for communication between the terminal and other devices. The memory may include random access memory (Random Access Memory, RAM) or non-volatile memory (non-volatile memory), such as at least one disk memory. Optionally, the memory may also be at least one storage system located remotely from the aforementioned processor.
The processor may be a general-purpose processor, including a central processing unit (Central Processing Unit, CPU for short), a network processor (Network Processor, NP for short), etc.; but also digital signal processors (Digital Signal Processing, DSP for short), application specific integrated circuits (Application Specific Integrated Circuit, ASIC for short), field-programmable gate arrays (Field-Programmable Gate Array, FPGA for short) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.
In yet another embodiment of the present invention, there is also provided a vehicle, including a processor configured to implement, when executed, a method as set forth in the first aspect of the embodiment of the present invention.
It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the invention may take the form of a computer program product on one or more computer-usable vehicles having computer-usable program code embodied therein, including but not limited to disk storage, CD-ROM, optical storage, and the like.
Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the invention. 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 data processing terminal device to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal device, create a system 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 data 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 data 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.
Finally, it is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. "and/or" means either or both of which may be selected. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or terminal device comprising the element.
The above description of the power control method, the device, the electronic equipment and the vehicle of the hybrid system provided by the invention applies specific examples to illustrate the principle and the implementation of the invention, and the above examples are only used for helping to understand the method and the core idea of the invention; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present invention, the present description should not be construed as limiting the present invention in view of the above.

Claims (10)

1. A hybrid system power control method, the method comprising:
determining whether the vehicle meets the triggering condition of the ejection starting function;
executing the launch starting function under the condition that the vehicle is determined to meet the triggering condition of the launch starting function;
controlling the vehicle to enter a clutch sliding friction running state, and determining a first target torque output by an engine and a second target torque output by a driving motor;
based on the first target torque and the second target torque, an actual output torque of the engine and an actual output torque of the drive motor are adjusted.
2. The method of claim 1, wherein determining whether the vehicle satisfies a trigger condition for an launch function comprises:
acquiring starting data of a vehicle, and determining whether the vehicle meets a first execution condition of ejection starting according to the starting data;
under the condition that the vehicle meets the first execution condition of ejection starting, determining the relationship between the maximum dischargeable power of the vehicle battery and the power of the driving motor;
and determining whether the vehicle meets a second execution condition of ejection starting according to the relation between the maximum dischargeable power of the vehicle battery and the power of the driving motor.
3. The method of claim 2, wherein the first execution condition of the launch vehicle comprises:
the current opening of the accelerator pedal of the vehicle is larger than the preset opening, and the brake pedal is positioned at a braking position;
the current driving mode of the vehicle is a sport mode.
4. The method of claim 2, wherein determining whether the vehicle satisfies a second execution condition for launch based on a magnitude relationship between a maximum dischargeable power of the battery of the vehicle and a power of the drive motor, comprises:
if the maximum dischargeable power of the vehicle battery is greater than or equal to the power of the driving motor, determining that the vehicle meets a second execution condition of ejection starting;
and if the maximum dischargeable power of the vehicle battery is smaller than the power of the driving motor, determining that the vehicle does not meet a second execution condition of ejection starting.
5. The method of claim 4, wherein after the step of determining that the vehicle does not meet the second execution condition for launch, the method further comprises:
calculating a power difference value between the maximum dischargeable power of the vehicle battery and the power of the driving motor;
if the power difference is larger than a first threshold and smaller than a second threshold, determining the engine as an auxiliary power source, driving a generator to charge the vehicle battery by the auxiliary power source, and continuously executing an ejection starting function;
and if the power difference value is larger than a second threshold value, closing the ejection starting function.
6. The method according to claim 1, wherein the method further comprises:
creating an execution time counter of the ejection starting function;
after each execution of the ejection starting function, executing 1 adding operation on the execution times counter;
and acquiring the execution times of the ejection starting function recorded by the execution times counter, and prohibiting the vehicle from starting the ejection starting function when the execution times are larger than a preset third threshold value.
7. A hybrid system power control device, the device comprising:
the judging module is used for determining whether the vehicle meets the triggering condition of the ejection starting function or not;
the execution module is used for executing the ejection starting function under the condition that the vehicle is determined to meet the triggering condition of the ejection starting function;
the control module is used for controlling the vehicle to enter a clutch sliding friction running state and determining a first target torque output by the engine and a second target torque output by the driving motor;
and the adjusting module is used for adjusting the actual output torque of the engine and the actual output torque of the driving motor based on the first target torque and the second target torque.
8. The apparatus of claim 7, wherein the determining module comprises:
the first acquisition sub-module is used for acquiring starting data of the vehicle and determining whether the vehicle meets a first execution condition of ejection starting according to the starting data of the vehicle;
the second acquisition submodule is used for acquiring the relation between the maximum dischargeable power of the vehicle battery and the power of the driving motor under the condition that the vehicle meets the first execution condition of ejection starting;
and the judging sub-module is used for determining whether the vehicle meets a second execution condition of ejection starting according to the magnitude relation between the maximum dischargeable power of the vehicle battery and the power of the driving motor.
9. The electronic equipment is characterized by comprising a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory are communicated with each other through the communication bus;
a memory for storing a computer program;
a processor for carrying out the method steps of any one of claims 1-6 when executing a program stored on a memory.
10. A vehicle, characterized in that it comprises a processor for performing the method according to any one of claims 1-6.
CN202210698250.1A 2022-06-20 2022-06-20 Hybrid system power control method and device, electronic equipment and vehicle Pending CN117302183A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210698250.1A CN117302183A (en) 2022-06-20 2022-06-20 Hybrid system power control method and device, electronic equipment and vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210698250.1A CN117302183A (en) 2022-06-20 2022-06-20 Hybrid system power control method and device, electronic equipment and vehicle

Publications (1)

Publication Number Publication Date
CN117302183A true CN117302183A (en) 2023-12-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
CN (1) CN117302183A (en)

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