CN117302156A - Power output method and device, storage medium and vehicle - Google Patents

Power output method and device, storage medium and vehicle Download PDF

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Publication number
CN117302156A
CN117302156A CN202210718290.8A CN202210718290A CN117302156A CN 117302156 A CN117302156 A CN 117302156A CN 202210718290 A CN202210718290 A CN 202210718290A CN 117302156 A CN117302156 A CN 117302156A
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CN
China
Prior art keywords
torque value
vehicle
target
power
engine
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Pending
Application number
CN202210718290.8A
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Chinese (zh)
Inventor
刘志刚
陈淑江
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Great Wall Motor Co Ltd
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Great Wall Motor Co Ltd
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Priority to CN202210718290.8A priority Critical patent/CN117302156A/en
Publication of CN117302156A publication Critical patent/CN117302156A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
    • 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
    • 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, or advanced driver assistance systems for ensuring comfort, stability and safety or drive control systems for propelling or retarding the vehicle
    • B60W30/18—Propelling the vehicle
    • B60W30/182—Selecting between different operative modes, e.g. comfort and performance modes
    • 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
    • B60W2510/02—Clutches
    • B60W2510/0275—Clutch 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
    • 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
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/06—Combustion engines, Gas turbines
    • B60W2510/0657—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
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/08—Electric propulsion units
    • B60W2510/085—Power
    • 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
    • B60W2510/24—Energy storage means
    • B60W2510/242—Energy storage means for electrical energy
    • 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
    • B60W2520/00—Input parameters relating to overall vehicle dynamics
    • B60W2520/10—Longitudinal speed
    • 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
    • B60W2710/10—Change speed gearings
    • 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
    • B60W2710/10—Change speed gearings
    • B60W2710/105—Output torque
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles

Abstract

The invention provides a power output method, a device, a storage medium and a vehicle, comprising the following steps: acquiring a travel parameter of a vehicle, wherein the travel parameter comprises: opening degree of a vehicle accelerator pedal, driving mode, vehicle speed, power of a vehicle battery and power of a driving motor; when the opening degree of the accelerator pedal of the vehicle is detected to reach a first target value, the driving mode reaches a moving mode, the vehicle speed reaches a second target value, and the power of a vehicle battery is larger than that of a driving motor, generating a target torque value according to the torque value of the engine and the maximum torque value of the clutch in a preset range, and sending the target torque value to a speed regulator motor; and controlling the speed regulator motor to participate in driving together with the driving motor and the engine according to the target torque value. Under the condition of enough battery power, the speed regulator motor participates in driving, so that the dynamic performance of the whole vehicle is exerted to the limit.

Description

Power output method and device, storage medium and vehicle
Technical Field
The present invention relates to the field of vehicle power output, and in particular, to a power output method, a device, a storage medium, and a vehicle.
Background
The hybrid technology is a high-integration, high-efficiency and multi-mode oil-electricity hybrid system, adopts a double-motor hybrid technology, can realize the balance of high efficiency and high performance in full-speed domain and full scene, and can simultaneously ensure the vehicle performance and the fuel economy.
The vehicle adopting the hybrid technology in the current market adopts a series driving mode when running at a low speed, an engine and a generator provide electric energy for the vehicle, a driving motor drives wheels independently, a direct driving mode is adopted when running at a high speed, the engine and the driving motor both participate in driving the wheels, and the generator provides electric energy for the vehicle.
However, under the direct-drive driving condition of the hybrid technology vehicle in the prior art, when the power of the vehicle battery is far enough to meet the power supply requirement of the vehicle, the generator is not needed to provide electric energy for the vehicle, and at the moment, the power of the generator is idle, so that the dynamic performance of the whole vehicle is not exerted to the limit.
Disclosure of Invention
In view of the above, the present invention aims to provide a power output method, a device, a storage medium and a vehicle, so as to solve the problem that the power of the existing generator is idle and the power performance of the whole vehicle is not exerted.
In order to achieve the above purpose, the technical scheme of the invention is realized as follows:
a first aspect of an embodiment of the present application provides a power output method, including:
acquiring travel parameters of a vehicle, wherein the travel parameters comprise: opening degree of a vehicle accelerator pedal, driving mode, vehicle speed, power of a vehicle battery and power of a driving motor;
when the opening degree of the accelerator pedal of the vehicle is detected to reach a first target value, the driving mode reaches a movement mode, the vehicle speed reaches a second target value, and the power of the vehicle battery is larger than that of the driving motor, a target torque value is generated according to the torque value of the engine and the maximum torque value of the clutch in a preset range, and the target torque value is sent to a speed regulator motor;
and controlling the speed regulator motor to participate in driving together with the driving motor and the engine according to the target torque value.
Further, the generating the target torque value according to the torque value of the engine and the maximum torque value of the clutch in a preset range includes:
generating a first torque value according to a difference between the power of the vehicle battery and the power of the driving motor;
generating a second torque value according to a difference value between the torque value of the engine and a maximum torque value of the clutch in a preset range, wherein the maximum torque value of the clutch in the preset range is larger than the torque value of the engine;
in the case that the first torque value is detected to be larger than the second torque value, taking the second torque value as the target torque value sent to the speed regulator motor;
and when the first torque value is detected to be smaller than the second torque value, the first torque value is taken as the target torque value sent to the speed regulator motor.
Further, after the vehicle speed reaches the second target value, the method further includes:
transmitting target gear information of the vehicle to a gearbox controller, wherein the gearbox controller adjusts the working mode of the vehicle through the target gear information;
receiving actual gear information returned by the gearbox controller;
and under the condition that the actual gear information is detected to be consistent with the target gear information, confirming that the working state of the vehicle is normal.
Further, the acquiring the travel parameter of the vehicle includes:
the travel parameter of the vehicle is acquired if the temperature of the clutch is detected to be within a target threshold range.
A second aspect of an embodiment of the present application provides a power output apparatus, the apparatus comprising:
the parameter acquisition module is used for acquiring the travel parameters of the vehicle, wherein the travel parameters comprise: opening degree of a vehicle accelerator pedal, driving mode, vehicle speed, power of a vehicle battery and power of a driving motor; the method comprises the steps of carrying out a first treatment on the surface of the
The transmission module is used for generating a target torque value according to the torque value of the engine and the maximum torque value of the clutch in a preset range when the opening degree of the accelerator pedal of the vehicle is detected to reach a first target value, the driving mode reaches a movement mode, the vehicle speed reaches a second target value, and the power of the vehicle battery is larger than that of the driving motor, and transmitting the target torque value to the speed regulator motor;
and the control module is used for controlling the speed regulator motor to participate in driving together with the driving motor and the engine according to the target torque value.
A third aspect of the embodiments of the present application provides a readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method as described in the first aspect of the present application.
A fourth aspect of the present embodiment provides a vehicle, including: the power output device.
Compared with the prior art, the power output method, the device, the storage medium and the vehicle have the following advantages:
the embodiment of the invention provides a power output method, a device, a storage medium and a vehicle, comprising the following steps: acquiring a travel parameter of a vehicle, wherein the travel parameter comprises: opening degree of a vehicle accelerator pedal, driving mode, vehicle speed, power of a vehicle battery and power of a driving motor; when the opening degree of the accelerator pedal of the vehicle is detected to reach a first target value, the driving mode reaches a moving mode, the vehicle speed reaches a second target value, and the power of a vehicle battery is larger than that of a driving motor, generating a target torque value according to the torque value of the engine and the maximum torque value of the clutch in a preset range, and sending the target torque value to a speed regulator motor; and controlling the speed regulator motor to participate in driving together with the driving motor and the engine according to the target torque value. Under the condition of enough battery power, the speed regulator motor participates in driving, so that the dynamic performance of the whole vehicle is exerted to the limit.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
FIG. 1 is a flowchart illustrating steps of a method of power take-off according to an exemplary embodiment;
FIG. 2 is a flowchart illustrating steps of another power take-off method according to an exemplary embodiment;
fig. 3 is a block diagram of a power take-off according to an exemplary embodiment.
Detailed Description
In order to enable those skilled in the art to better understand the technical solutions of the present disclosure, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present disclosure.
In the hybrid electric vehicle according to the embodiment of the present invention, three power sources, i.e., a driving Motor (TM, technological Motor), a Governor Motor (GM, a golf Motor) and an engine, are used to provide driving power for the vehicle, and it is to be confirmed which one or more power sources participate in driving the vehicle is determined by a hybrid controller (HCU, hybrid Control Unit), which is a core of the overall vehicle control and is mainly responsible for coordinating the operation of an engine management system (EMS, engine Management System), a transmission controller (TCU, transmission Control Unit), a Motor controller (MCU, motorController Unit) and a battery management system (BMS, battery Management System), and for acquiring relevant information of the vehicle by detecting high and low voltage power management and faults of the overall power system. It will be apparent that the embodiments described are some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, fig. 1 is a flowchart illustrating steps of a power take-off method according to an exemplary embodiment.
Step 101, acquiring travel parameters of a vehicle, wherein the travel parameters comprise: opening degree of a vehicle accelerator pedal, driving mode, vehicle speed, power of a vehicle battery and power of a driving motor.
In the embodiment of the invention, in the running process of the vehicle, the travel parameters of the vehicle are acquired through the HCU controller, wherein the travel parameters comprise the opening degree of an accelerator pedal of the vehicle, a driving mode, a vehicle speed, the power of a vehicle battery and the power of a driving motor, and the opening degree of the accelerator pedal of the vehicle is acquired through a displacement sensor of the accelerator pedal. The accelerator pedal is also called an accelerator pedal, and is mainly used for controlling the opening degree of a throttle valve, thereby controlling the power output of an engine. In general, an electronic throttle can be used on a vehicle to control the opening of a throttle valve, then a displacement sensor is installed on an accelerator pedal of the electronic throttle, and when a driver steps on the accelerator pedal, an HCU controller judges the driving intention of the driver according to the opening change and the acceleration of the accelerator pedal acquired by the displacement sensor on the pedal and a built-in algorithm, and then sends a corresponding control signal to a control motor of the throttle valve of the engine, so that the power output of the engine is controlled.
The driving mode comprises a sport mode, an economic mode and a standard mode, wherein the economic mode adjusts the opening degree of a throttle valve through a computer of a vehicle to correct abnormal operation of a driver, so that the most standard fuel-saving mode is achieved; and the movement mode is opposite to the movement mode, the rotation speed interval is increased, the torque of the engine is increased so as to achieve the maximum power, the movement mode is larger in torque and more aggressive in output torque relative to the economic mode, the engine output is larger in the same accelerator depth movement mode, and when the accelerator is stepped on to the bottom, the torque of the movement mode is more direct.
Wherein, the speed of a vehicle is obtained through the speed sensor. The speed sensor is used to detect the speed of car and has the functions of controlling the idle speed of engine, locking the torque converter of automatic speed variator, shifting gear of automatic speed variator, opening and closing engine cooling fan, cruise speed, etc. The vehicle speed sensor in the embodiment of the invention may include various kinds, such as: magneto-electric vehicle speed sensors, hall type vehicle speed sensors, photoelectric type vehicle speed sensors, etc.
The power of the vehicle battery and the power of the driving motor may be obtained through the battery management system BMS. The BMS battery management system unit comprises a BMS battery management system, a control module, a display module, a wireless communication module, electrical equipment, a battery pack for supplying power to the electrical equipment and an acquisition module for acquiring battery information of the battery pack, wherein the BMS battery management system can realize the following functions: (1) measurement of battery terminal voltage; (2) The energy balance among the single batteries is that the single batteries are charged in an equalizing way, so that all batteries in the battery pack are in an equalizing and consistent state; (3) battery pack total voltage measurement; (4) battery pack total current measurement; (5) SOC calculation, namely accurately estimating the State of Charge (SOC) of the power battery pack, namely the residual quantity of the battery, ensuring that the SOC is maintained in a reasonable range, and preventing the damage to the battery due to overcharge or overdischarge; (6) dynamically monitoring the working state of the power battery pack: in the process of charging and discharging the battery, collecting terminal voltage and temperature, charging and discharging current and total battery pack voltage of each battery in the battery pack in real time, and preventing the battery from being overcharged or overdischarged; (7) real-time data display; (8) Data recording and analysis, and meanwhile, picking out a battery with a problem, and keeping the reliability and high efficiency of the operation of the whole group of batteries; (9) communication networking function. The power conditions of the vehicle battery and the driving motor are thus obtained through the battery management system BMS.
Further, acquiring the journey parameter information of the vehicle specifically includes: and acquiring the journey parameter information of the vehicle under the condition that the temperature information of the clutch is detected to be in a target threshold range.
The clutch in the embodiment of the invention comprises a plurality of types, such as: electromagnetic clutches, magnetic particle clutches, friction clutches, hydraulic clutches, and the like. The clutch is installed between the engine and the transmission, is an assembly part directly connected with the engine in the automobile transmission system, is usually installed together with a flywheel set of a crankshaft of the engine, and is a part for cutting off and transmitting power between the engine and the automobile transmission system. During the whole process from starting to normal running of the automobile, a driver can operate the clutch according to the requirement to temporarily separate or gradually connect the engine and the transmission system so as to cut off or transfer the power output by the engine to the transmission system. The clutch has the functions of gradually engaging the engine with the transmission, thereby ensuring the stable starting of the automobile; 2. temporarily disconnecting the engine from the transmission to facilitate shifting and reduce shock during shifting; 3. when the automobile is braked suddenly, the automobile can play a role in separation, and the overload of a transmission system such as a speed changer and the like is prevented, so that a certain protection effect is achieved.
In the embodiment of the invention, different safety temperature ranges are set according to different clutch characteristics, for example, the normal temperature of an electromagnetic clutch rises by 40 ℃, and the working temperature in the limit heat balance is not allowed to exceed 100 ℃, so that the safety temperature range is set to 40-100 ℃. If the temperature is higher, the clutch plate starts to slip, so that the power of the engine cannot be completely transmitted to the gearbox, the automobile is insufficient in power, and the slip can in turn raise the temperature higher, and if the problem is not solved in time, the clutch is scrapped. Therefore, the temperature information of the clutch is acquired first, and when the temperature information of the clutch is detected to be in the target threshold range, the clutch state of the current vehicle is confirmed to be normal, and after the operation can be continued, the travel information of the vehicle is started to be acquired.
The embodiment of the invention ensures the normal operation of the subsequent operation through the detection of the temperature of the clutch, can timely detect the state of the clutch, and prolongs the service life of the clutch.
Step 102, when it is detected that the opening degree of the accelerator pedal of the vehicle reaches a first target value, the driving mode reaches a movement mode, the vehicle speed reaches a second target value, and the power of the vehicle battery is larger than the power of the driving motor, a target torque value is generated according to the torque value of the engine and the maximum torque value of the clutch within a preset range, and the target torque value is sent to the speed regulator motor.
In the embodiment of the invention, a target value can be preset, then the HCU controller obtains the current vehicle speed through the vehicle speed sensor, then judges whether the vehicle speed reaches the target value, judges the state of the clutch at the moment according to the following steps after the vehicle reaches the target value, and judges whether the engine participates in driving or not according to the judgment:
step one, transmitting driving mode information of the vehicle to a gearbox controller, wherein the gearbox controller adjusts the state of a clutch according to the driving mode information;
step two, receiving clutch state information returned by the gearbox controller;
and thirdly, controlling the engine to participate in driving under the condition that the state information of the clutch is detected to be completely engaged.
Through the steps, the fact that the automobile is in the direct drive mode at the moment is confirmed, the clutch is completely engaged, and the engine starts to participate in driving. For example, the target value is set to 40KPH in advance, when the vehicle speed is greater than 40KPH, the vehicle is switched to the direct drive mode at this time, the TCU controller transmits state information of the clutch, and the engine participates in driving when the clutch is fully engaged. The preset target value is directly set when the vehicle is designed, and may be 40KPH or 60KPH, and the specific value may be set according to the actual requirement, which is not particularly limited in the embodiment of the present invention.
According to the embodiment of the invention, a target value can be preset, then the HCU controller obtains the opening condition of the accelerator pedal according to the displacement sensor of the accelerator pedal, then judges whether the opening of the accelerator pedal reaches the target value at the moment, and confirms that the accelerator is in a full accelerator state at the moment when the opening of the accelerator pedal reaches the target value. For example, if the target value is set to 95% in advance, the HCU controller determines that the accelerator is in the full throttle state at this time when the opening of the accelerator pedal is 95% or more from the displacement sensor of the accelerator pedal. The preset target value is directly set when the vehicle is designed, and may be 95% or 93%, and the specific value may be set according to the actual requirement, which is not particularly limited in the embodiment of the present invention.
The total power which can be provided by the vehicle battery in the embodiment of the invention is required to be larger than the power required by the driving motor, then when the opening degree of the accelerator pedal of the vehicle is detected to reach the second target value and the driving mode reaches the movement mode, the speed regulator motor starts to participate in driving under the condition that the power of the vehicle battery is larger than that of the driving motor and is simultaneously met, and the target torque value is sent to the speed regulator motor. Also, because the clutch has a limit on the maximum torque value, the target torque value needs to be determined by:
the first step: generating a first torque value according to a difference between the power of the vehicle battery and the power of the driving motor;
and a second step of: generating a second torque value according to a difference value between the torque value of the engine and a maximum torque value of the clutch in a preset range, wherein the maximum torque value of the clutch in the preset range is larger than the torque value of the engine;
and a third step of: in the case that the first torque value is detected to be larger than the second torque value, taking the second torque value as the target torque value sent to the speed regulator motor;
fourth step: and when the first torque value is detected to be smaller than the second torque value, the first torque value is taken as the target torque value sent to the speed regulator motor.
For example, the difference between the battery power of the vehicle and the power of the driving motor is 10KW, the calculated torque value is 63Nm, the torque of the engine is subtracted from the maximum torque value of the clutch to obtain a value, if the value is 80Nm, because 80Nm is greater than 63Nm, the torque calculated according to the redundant energy of the battery at this time can be provided to the motor of the speed regulator, that is, the torque obtained by the speed regulator at this time is 63Nm, if the value is 40Nm, less than 63Nm, because the service life of the clutch and the safety of the automobile are considered, and the speed regulator can only obtain the torque within the maximum torque limit, that is, the obtained torque value is 40Nm.
According to the embodiment of the invention, through judging the opening degree of the accelerator pedal of the vehicle, the driving mode, the vehicle speed, the power of the vehicle battery and the driving motor, the target torque value sent to the speed regulator motor is finally determined according to the torque value of the engine and the maximum torque value of the clutch in the preset range, so that the speed regulator motor can use the redundant energy of the vehicle battery and can participate in driving under certain conditions.
And 103, controlling the speed regulator motor to participate in driving together with the driving motor and the engine according to the target torque value.
The automobile in the embodiment of the invention is provided with three power sources, namely an engine, a driving motor and a speed regulator motor, wherein the driving motor participates in driving when the automobile runs at a low speed, the automobile is switched to a direct driving mode after the automobile speed reaches a certain target, the clutch is completely engaged, the engine also participates in driving, and at the moment, the battery still has redundant energy, so that the speed regulator motor also participates in driving according to a torque value calculated by the redundant energy of the battery.
The embodiment of the invention provides a power output method, which specifically comprises the following steps: acquiring a travel parameter of a vehicle, wherein the travel parameter comprises: opening degree of a vehicle accelerator pedal, driving mode, vehicle speed, power of a vehicle battery and power of a driving motor; when the opening degree of the accelerator pedal of the vehicle is detected to reach a first target value, the driving mode reaches a moving mode, the vehicle speed reaches a second target value, and the power of a vehicle battery is larger than that of a driving motor, generating a target torque value according to the torque value of the engine and the maximum torque value of the clutch in a preset range, and sending the target torque value to a speed regulator motor; and controlling the speed regulator motor to participate in driving together with the driving motor and the engine according to the target torque value. Under the condition of enough battery power, the speed regulator motor participates in driving, so that the dynamic performance of the whole vehicle is exerted to the limit, meanwhile, the normal operation of subsequent operation is ensured through the detection of the temperature of the clutch, the state of the clutch can be timely detected, and the service life of the clutch is prolonged.
Referring to fig. 2, fig. 2 is a flowchart illustrating steps of another power take-off method according to an exemplary embodiment.
Step 201, transmitting target gear information of the vehicle to a gearbox controller, and adjusting the working mode of the vehicle by the gearbox controller through the target gear information.
The gearbox controller in the embodiment of the invention is a control module for determining a gear shifting point when an automobile shifts gears, controlling an automobile gear shifting mechanism to carry out gear reversing and gear advance operation, calculating the motor rotating speed when the automobile shifts gears and calculating the automobile speed. The gearbox is also a device for changing the rotation speed ratio and the movement direction, and the torque, the rotation speed and the movement direction transmitted from the driving shaft to the driven shaft can be changed according to different working conditions. The main functions are as follows: the driving force and running speed (shift) of the vehicle are changed with the engine speed and torque unchanged; allowing the vehicle to travel in reverse (reverse); the engine may be stopped without flameout (neutral).
The hybrid electric vehicle of the embodiment of the invention has a plurality of different working modes: the first is pure electric driving, at the moment, the engine is stopped, the power battery provides electric energy, and the driving motor efficiently transmits power to wheels through two-stage gears; the second is a series mode, at this time, the engine and the speed regulator motor provide electric energy, the engine works in an optimal economic area, the engine power transmission chain is disconnected, the driving motor drives the wheels independently, the vehicle is suitable for low-speed cruising and medium-low speed accelerating working conditions, the third is a power direct driving mode, the engine directly drives the wheels through a high-speed DHT gear set of a special hybrid gearbox, the driving motor dynamically adjusts the working point of the engine, the engine is ensured to work in the optimal economic area, and the vehicle is suitable for medium-low speed cruising and medium-high speed high-load working conditions; the fourth is an economic direct-drive mode, wherein the engine directly drives wheels through the DHT small-speed-ratio gear set, and the driving motor dynamically adjusts the working point of the engine, so that the engine can work in an optimal economic zone, and the method is suitable for medium-high speed cruising working conditions; the fifth is full-load running, wherein three power units simultaneously output power, the power performance is strongest, the sixth is energy recovery, the clutch is disconnected, and kinetic energy is efficiently recovered through the driving motor, wherein when the engine is in a direct driving mode, the engine is in a working efficient section, and the automobile is directly driven through the two-gear transmission.
In the embodiment of the invention, the HCU controller sends the target gear information to the gearbox controller, and the gearbox controller can adjust the working mode of the automobile after receiving the gear information.
Step 202, receiving actual gear information returned by the gearbox controller.
Step 203, confirming that the working state of the vehicle is normal when the actual gear information is detected to be consistent with the target gear information.
In the embodiment of the invention, the working states are normal and abnormal, and when the actual gear information is consistent with the target gear information, the working state of the vehicle is judged to be normal; when the actual gear information is inconsistent with the target gear information, it is determined that the operating state of the vehicle is abnormal. For example, the HCU controller sends gear information of gear 2 to the TCU, the TCU starts to adjust the working mode of the vehicle according to the received gear information, and then sends actual gear information to the HCU controller at this time, when the gear information received by the HCU controller is gear 2, it is determined that the working state of the vehicle is normal at this time, and when the gear information received by the HCU controller is gear 1, it is determined that the working state of the vehicle is abnormal at this time. At this time, the staff can search whether the vehicle has a problem or not in time according to the working state of the automobile.
The embodiment of the invention provides a power output method, which specifically comprises the following steps: acquiring a travel parameter of a vehicle, wherein the travel parameter comprises: opening degree of a vehicle accelerator pedal, driving mode, vehicle speed, power of a vehicle battery and power of a driving motor; when the opening degree of the accelerator pedal of the vehicle is detected to reach a first target value, the driving mode reaches a moving mode, the vehicle speed reaches a second target value, and the power of a vehicle battery is larger than that of a driving motor, generating a target torque value according to the torque value of the engine and the maximum torque value of the clutch in a preset range, and sending the target torque value to a speed regulator motor; and controlling the speed regulator motor to participate in driving together with the driving motor and the engine according to the target torque value. Under the condition of enough battery power, the speed regulator motor participates in driving, so that the dynamic performance of the whole vehicle is exerted to the limit. Meanwhile, the working state of the automobile is confirmed through comparison of the actual gear and the target gear, so that the automobile is timely searched, and the safety and stability of the automobile are improved.
On the basis of the embodiment, the embodiment of the invention also provides a power output device.
Referring to fig. 3, fig. 3 is a block diagram of a power output apparatus according to an exemplary embodiment, which may include the following modules in particular:
the parameter obtaining module 301 is configured to obtain a trip parameter of a vehicle, where the trip parameter includes: opening degree of a vehicle accelerator pedal, driving mode, vehicle speed, power of a vehicle battery and power of a driving motor.
And the sending module 302 is configured to generate a target torque value according to a torque value of an engine and a maximum torque value of a clutch within a preset range when detecting that the opening degree of an accelerator pedal of the vehicle reaches a first target value, the driving mode reaches a movement mode, the vehicle speed reaches a second target value, and the power of the vehicle battery is greater than the power of the driving motor, and send the target torque value to a speed regulator motor.
And the control module 303 is used for controlling the speed regulator motor to participate in driving together with the driving motor and the engine according to the target torque value.
Wherein the power output apparatus further comprises:
and the first generation sub-module is used for generating the first torque value according to the difference value of the power of the vehicle battery and the power of the driving motor.
And the second generation submodule is used for generating a second torque value according to the difference value between the torque value of the engine and the maximum torque value of the clutch in a preset range, wherein the maximum torque value of the clutch in the preset range is larger than the torque value of the engine.
And the first detection sub-module is used for taking the second torque value as the target torque value sent to the speed regulator motor under the condition that the first torque value is detected to be larger than the second torque value.
And the second detection sub-module is used for taking the first torque value as the target torque value sent to the speed regulator motor under the condition that the first torque value is detected to be smaller than the second torque value.
And the adjusting sub-module is used for sending the target gear information of the vehicle to a gearbox controller, and the gearbox controller adjusts the working mode of the vehicle through the target gear information.
And the receiving sub-module is used for receiving the actual gear information returned by the gearbox controller.
And the confirmation state sub-module is used for confirming that the working state of the vehicle is normal under the condition that the actual gear information is detected to be consistent with the target gear information.
And the temperature detection sub-module is used for acquiring the travel parameter of the vehicle under the condition that the temperature of the clutch is detected to be in a target threshold range.
The embodiment of the invention provides a power output method, which specifically comprises the following steps: acquiring a travel parameter of a vehicle, wherein the travel parameter comprises: opening degree of a vehicle accelerator pedal, driving mode, vehicle speed, power of a vehicle battery and power of a driving motor; when the opening degree of the accelerator pedal of the vehicle is detected to reach a first target value, the driving mode reaches a moving mode, the vehicle speed reaches a second target value, and the power of a vehicle battery is larger than that of a driving motor, generating a target torque value according to the torque value of the engine and the maximum torque value of the clutch in a preset range, and sending the target torque value to a speed regulator motor; and controlling the speed regulator motor to participate in driving together with the driving motor and the engine according to the target torque value. Under the condition that the battery power is large enough, the speed regulator motor participates in driving, so that the dynamic performance of the whole vehicle is exerted to the limit, meanwhile, the working state of the vehicle is confirmed through comparison of the actual gear and the target gear, the vehicle is timely searched, the safety and the stability of the vehicle are improved, the state of the clutch is timely detected through detection of the temperature information of the clutch, and the service life of the clutch is prolonged.
Based on the same inventive concept, another embodiment of the present application provides a readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the power output method according to any of the above embodiments of the present application.
Based on the same inventive concept, another embodiment of the present application provides a vehicle according to an embodiment of the present invention, which may specifically include: the power output device.
For the device embodiments, since they are substantially similar to the method embodiments, the description is relatively simple, and reference is made to the description of the method embodiments for relevant points.
In this specification, each embodiment is described in a progressive manner, and each embodiment is mainly described by differences from other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other.
It will be apparent to those skilled in the art that embodiments of the present application may be provided as a method, apparatus, or computer program product. Accordingly, the present embodiments 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 present application may take the form of a computer program product on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
Embodiments of the present application are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus, 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 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 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 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.
While preferred embodiments of the present embodiments 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 embodiments of the present application.
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. 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 foregoing has described in detail the methods, apparatus, storage medium and vehicle for power take-off provided herein, with specific examples being provided herein to illustrate the principles and embodiments of the present application, the above examples being provided only to assist in understanding the methods and core ideas of the present application; meanwhile, as those skilled in the art will vary in specific embodiments and application scope according to the ideas of the present application, the present solution is applied to the precursor DHT system, but is not limited to this scenario, and the disclosure should not be construed as limiting the present application.

Claims (10)

1. The power output method is characterized by being applied to a hybrid vehicle controller, and comprises the following steps of:
acquiring travel parameters of a vehicle, wherein the travel parameters comprise: opening degree of a vehicle accelerator pedal, driving mode, vehicle speed, power of a vehicle battery and power of a driving motor;
when the opening degree of the accelerator pedal of the vehicle is detected to reach a first target value, the driving mode reaches a movement mode, the vehicle speed reaches a second target value, and the power of the vehicle battery is larger than that of the driving motor, a target torque value is generated according to the torque value of the engine and the maximum torque value of the clutch in a preset range, and the target torque value is sent to a speed regulator motor;
and controlling the speed regulator motor to participate in driving together with the driving motor and the engine according to the target torque value.
2. The method of claim 1, wherein generating the target torque value from the torque value of the engine and the maximum torque value of the clutch within the preset range comprises:
generating a first torque value according to a difference between the power of the vehicle battery and the power of the driving motor;
generating a second torque value according to a difference value between the torque value of the engine and a maximum torque value of the clutch in a preset range, wherein the maximum torque value of the clutch in the preset range is larger than the torque value of the engine;
in the case that the first torque value is detected to be larger than the second torque value, taking the second torque value as the target torque value sent to the speed regulator motor;
and when the first torque value is detected to be smaller than the second torque value, the first torque value is taken as the target torque value sent to the speed regulator motor.
3. The method according to claim 1, characterized in that after the vehicle speed reaches a second target value, the method further comprises:
transmitting target gear information of the vehicle to a gearbox controller, wherein the gearbox controller adjusts the working mode of the vehicle through the target gear information;
receiving actual gear information returned by the gearbox controller;
and under the condition that the actual gear information is detected to be consistent with the target gear information, confirming that the working state of the vehicle is normal.
4. The method of claim 1, wherein the obtaining the travel parameters of the vehicle comprises:
the travel parameter of the vehicle is acquired if the temperature of the clutch is detected to be within a target threshold range.
5. A power take-off, the apparatus comprising:
the parameter acquisition module is used for acquiring the travel parameters of the vehicle, wherein the travel parameters comprise: opening degree of a vehicle accelerator pedal, driving mode, vehicle speed, power of a vehicle battery and power of a driving motor;
the transmission module is used for generating a target torque value according to the torque value of the engine and the maximum torque value of the clutch in a preset range when the opening degree of the accelerator pedal of the vehicle is detected to reach a first target value, the driving mode reaches a movement mode, the vehicle speed reaches a second target value, and the power of the vehicle battery is larger than that of the driving motor, and transmitting the target torque value to the speed regulator motor;
and the control module is used for controlling the speed regulator motor to participate in driving together with the driving motor and the engine according to the target torque value.
6. The apparatus of claim 5, wherein the means for transmitting further comprises:
a first generation sub-module for generating the first torque value according to a difference between the power of the vehicle battery and the power of the driving motor;
the second generation submodule is used for generating a second torque value according to the difference value between the torque value of the engine and the maximum torque value of the clutch in a preset range, wherein the maximum torque value of the clutch in the preset range is larger than the torque value of the engine;
a first detection sub-module, configured to, when detecting that the first torque value is greater than the second torque value, take the second torque value as the target torque value sent to the governor motor;
and the second detection sub-module is used for taking the first torque value as the target torque value sent to the speed regulator motor under the condition that the first torque value is detected to be smaller than the second torque value.
7. The apparatus of claim 5, wherein the means for transmitting further comprises:
the adjusting sub-module is used for sending target gear information of the vehicle to the gearbox controller, and the gearbox controller adjusts the working mode of the vehicle through the target gear information;
the receiving sub-module is used for receiving actual gear information returned by the gearbox controller;
and the confirmation state sub-module is used for confirming that the working state of the vehicle is normal under the condition that the actual gear information is detected to be consistent with the target gear information.
8. The apparatus of claim 5, wherein the parameter acquisition module further comprises:
and the temperature detection sub-module is used for acquiring the travel parameter of the vehicle under the condition that the temperature of the clutch is detected to be in a target threshold range.
9. A computer readable storage medium storing a computer program, wherein the computer program when executed by a processor implements the power output method of any one of claims 1 to 4.
10. A vehicle, characterized by comprising: the power output apparatus of claims 5-8.
CN202210718290.8A 2022-06-22 2022-06-22 Power output method and device, storage medium and vehicle Pending CN117302156A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117685361A (en) * 2024-02-04 2024-03-12 潍柴动力股份有限公司 Gear shifting control method and device of AMT gear box system, vehicle and storage medium

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117685361A (en) * 2024-02-04 2024-03-12 潍柴动力股份有限公司 Gear shifting control method and device of AMT gear box system, vehicle and storage medium

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