CN-122009132-A - Plug-in hybrid power high-speed driving energy flow distribution mode debugging method, device, equipment and storage medium

CN122009132ACN 122009132 ACN122009132 ACN 122009132ACN-122009132-A

Abstract

The invention discloses a method, a device, equipment and a storage medium for debugging a plug-in hybrid power high-speed driving energy flow distribution mode, which relate to the technical field of new energy automobile control and comprise the steps of obtaining engine bench test data, whole vehicle noise vibration test data and high-speed environment noise vibration data; the method comprises the steps of generating a high-efficiency interval mapping chart based on engine bench test data, determining a basic high-efficiency comfortable power generation point based on the high-efficiency interval mapping chart and whole vehicle noise vibration test data and according to high-speed environment noise vibration data, determining a motor intervention strategy based on real-time working condition data and the basic high-efficiency comfortable power generation point, realizing collaborative optimization of high-efficiency operation and noise masking of an engine under a high-speed working condition, and improving fuel economy and driving smoothness.

Inventors

ZHOU XIAOGANG
ZHOU GUIYONG
Mo Xueshuang
WU SONG
Qin Yinhe
LI WEI
Wei Luotai
ZHANG ZHIQIANG
CHEN SHOUYI
ZHOU YONGJIAN

Assignees

东风柳州汽车有限公司

Dates

Publication Date: 20260512
Application Date: 20260228

Claims (10)

1. The method for debugging the plug-in hybrid power high-speed driving energy flow distribution mode is characterized by comprising the following steps of: Acquiring engine bench test data, whole vehicle noise vibration test data and high-speed environment noise vibration data; generating an efficient interval map based on the engine bench test data; Determining a basic efficient and comfortable power generation point based on the efficient interval mapping diagram, the whole vehicle noise vibration test data and according to high-speed environment noise vibration data; And determining a motor intervention strategy based on the real-time working condition data and the basic efficient and comfortable power generation point, so that the motor controller executes the motor intervention strategy.
2. The method of claim 1, wherein the step of generating a high efficiency interval map based on the engine bench test data comprises: controlling the operation of the engine in a preset engine speed range and a preset torque range to obtain a plurality of groups of bench test conditions; collecting fuel consumption rate and transmission efficiency under each set of bench test working conditions to obtain engine bench test data; And drawing a four-dimensional map of engine speed, torque, fuel consumption rate and transmission efficiency according to the engine bench test data to obtain a high-efficiency interval map.
3. The method of claim 1, wherein the step of determining a base efficient comfortable power generation point based on the efficient interval map, the whole car noise vibration test data, and the high-speed ambient noise vibration data comprises: determining a typical rotating speed and torque combination according to the high-efficiency interval map, and controlling an engine to operate according to each group of the typical rotating speed and torque combination to obtain a plurality of groups of noise vibration test working conditions; Collecting the noise value and the vibration acceleration value of the engine under each group of noise vibration test working conditions to obtain noise vibration test data of the whole vehicle; collecting environmental noise values and environmental vibration acceleration values under various high-speed pavement types and various vehicle speed working conditions to obtain high-speed environmental noise vibration data; Comparing the engine noise value and the vibration acceleration value with the environment noise value and the environment vibration acceleration value under corresponding working conditions respectively to obtain a noise vibration comparison result; Screening working points of which the noise value of the engine is smaller than or equal to the environmental noise value and the vibration acceleration value is smaller than or equal to the environmental vibration acceleration value according to the noise vibration comparison result to obtain noise masking standard data; and screening the rotational speed and torque combination which simultaneously meets the high-efficiency condition and the noise masking condition according to the noise masking standard reaching data and the high-efficiency interval mapping diagram to obtain a basic high-efficiency comfortable power generation point.
4. The method of claim 1, wherein the step of determining a motor intervention strategy based on real-time operating condition data and the base efficient comfortable power generation point comprises: When the power required for running is larger than the output power of the engine corresponding to the basic efficient and comfortable power generation point, determining a motor intervention strategy for starting the driving motor to perform auxiliary driving; And when the output power of the engine corresponding to the basic high-efficiency comfortable power generation point is larger than the power required by running, determining a motor intervention strategy for starting the generator to recover the energy.
5. The method of claim 4, wherein the step of determining a motor intervention strategy for initiating a drive motor for auxiliary drive comprises: Calculating a power difference value of the power required by running and the output power of the engine corresponding to the basic high-efficiency comfortable power generation point; Determining an intervention power upper limit of the driving motor according to the power difference value and a preset noise increment threshold; generating a torque gradual change control instruction of the driving motor according to the intervention power upper limit; and sending the torque gradual change control instruction to a motor controller so that the motor controller controls the driving motor to perform auxiliary driving according to the intervention power upper limit.
6. The method of claim 4, wherein the step of determining a motor intervention strategy to start the generator for energy recovery comprises: calculating surplus power values of the output power of the engine and the power required by running corresponding to the basic efficient and comfortable power generation point; determining target power generation of the generator according to the surplus power value; Generating a power generation control instruction according to the target power generation power; and sending the power generation control instruction to a motor controller so that the motor controller controls the generator to generate power according to the target power generation power and store the electric energy into a battery pack.
7. The method of claim 4, wherein the step of determining a motor intervention strategy based on real-time operating condition data and the base efficient comfortable power generation point further comprises: Receiving high-speed road section information sent by a navigation data interface, wherein the high-speed road section information comprises road surface type, speed limit value, gradient value and curve distribution information; predicting the driving required power of each road section according to the high-speed road section information to obtain predicted power requirements; generating a pre-planning control mapping table according to the corresponding relation between the predicted power demand and the basic efficient and comfortable power generation point; And when the distance from the target road section to the preset distance threshold value, calling corresponding parameters in the pre-planning control mapping table to obtain a pre-planned motor intervention strategy.
8. A plug-in hybrid high-speed travel energy flow distribution mode debugging device, the device comprising: the data acquisition module is used for acquiring engine bench test data, whole vehicle noise vibration test data and high-speed environment noise vibration data; the interval map generation module is used for generating an efficient interval map based on the engine bench test data; The power generation point determining module is used for determining a basic efficient and comfortable power generation point based on the efficient interval mapping diagram, the whole vehicle noise vibration test data and the high-speed environment noise vibration data; And the strategy determining module is used for determining a motor intervention strategy based on the real-time working condition data and the basic efficient and comfortable power generation point so as to enable the motor controller to execute the motor intervention strategy.
9. A plug-in hybrid high-speed travel energy flow distribution mode debugging device, characterized in that the device comprises a memory, a processor and a plug-in hybrid high-speed travel energy flow distribution mode debugging program stored on the memory and operable on the processor, the plug-in hybrid high-speed travel energy flow distribution mode debugging program being configured to implement the steps of the plug-in hybrid high-speed travel energy flow distribution mode debugging method according to any one of claims 1 to 7.
10. A storage medium, wherein a debugging program of a plug-in hybrid high-speed running energy flow distribution mode is stored on the storage medium, and the debugging program of the plug-in hybrid high-speed running energy flow distribution mode realizes the steps of the method for debugging a plug-in hybrid high-speed running energy flow distribution mode according to any one of claims 1 to 7 when executed by a processor.

Description

Plug-in hybrid power high-speed driving energy flow distribution mode debugging method, device, equipment and storage medium Technical Field The invention relates to the technical field of new energy automobile control, in particular to a method, a device, equipment and a storage medium for debugging a plug-in hybrid power high-speed driving energy flow distribution mode. Background With the rapid development of new energy automobile markets, the plug-in hybrid electric vehicle has the advantages of both a pure electric mode and a fuel oil driving mode, and becomes an important technical route for solving the problem of endurance anxiety of users and reducing energy consumption. The high-speed driving working condition is used as one of the core use scenes of the plug-in hybrid electric vehicle, and the energy flow distribution strategy directly influences the fuel economy, the driving comfort and the cooperative efficiency of the power system of the whole vehicle. When the existing plug-in hybrid electric vehicle runs at a high speed, an energy distribution mode of direct driving of an engine and simple assistance of a motor is generally adopted, single logic matching is carried out only according to power requirements, masking effects of high-speed environmental noise on engine noise are not fully considered, the engine is easy to break away from a high-efficiency operation interval or obvious noise vibration is generated, meanwhile, under a power fluctuation scene, the intervention time and the intensity of the motor lack of cooperative optimization, power pause or energy waste are easy to be caused, and high-efficiency cooperation of the engine, the motor and a battery is difficult to be realized. The foregoing is provided merely for the purpose of facilitating understanding of the technical solutions of the present invention and is not intended to represent an admission that the foregoing is prior art. Disclosure of Invention The invention mainly aims to provide a debugging method, device, equipment and storage medium for a plug-in hybrid power high-speed driving energy flow distribution mode, and aims to solve the technical problem of how to realize integrated optimization of efficient interval operation of an engine, environmental noise masking and collaborative intervention of a motor when a plug-in hybrid power automobile runs at a high speed. In order to achieve the above object, the present invention provides a method for debugging a plug-in hybrid power high-speed driving energy flow distribution mode, the method for debugging a plug-in hybrid power high-speed driving energy flow distribution mode comprising the steps of: Acquiring engine bench test data, whole vehicle noise vibration test data and high-speed environment noise vibration data; generating an efficient interval map based on the engine bench test data; Determining a basic efficient and comfortable power generation point based on the efficient interval mapping diagram, the whole vehicle noise vibration test data and according to high-speed environment noise vibration data; And determining a motor intervention strategy based on the real-time working condition data and the basic efficient and comfortable power generation point, so that the motor controller executes the motor intervention strategy. In one embodiment, the step of generating an efficient interval map based on the engine bench test data includes: controlling the operation of the engine in a preset engine speed range and a preset torque range to obtain a plurality of groups of bench test conditions; collecting fuel consumption rate and transmission efficiency under each set of bench test working conditions to obtain engine bench test data; And drawing a four-dimensional map of engine speed, torque, fuel consumption rate and transmission efficiency according to the engine bench test data to obtain a high-efficiency interval map. In an embodiment, the step of determining the basic efficient and comfortable power generation point based on the efficient section map, the whole vehicle noise vibration test data and the high-speed environmental noise vibration data includes: determining a typical rotating speed and torque combination according to the high-efficiency interval map, and controlling an engine to operate according to each group of the typical rotating speed and torque combination to obtain a plurality of groups of noise vibration test working conditions; Collecting the noise value and the vibration acceleration value of the engine under each group of noise vibration test working conditions to obtain noise vibration test data of the whole vehicle; collecting environmental noise values and environmental vibration acceleration values under various high-speed pavement types and various vehicle speed working conditions to obtain high-speed environmental noise vibration data; Comparing the engine noise value and the vibration acceleration value with the environment noise val