CN-122009139-A - Control method of vehicle, electronic equipment, vehicle and storage medium

CN122009139ACN 122009139 ACN122009139 ACN 122009139ACN-122009139-A

Abstract

The application provides a control method of a vehicle, electronic equipment, the vehicle and a storage medium, wherein the method is applied to the technical field of hybrid power control, and comprises the following steps: under the condition that a forced electricity-keeping mode of the vehicle is in an activated state, acquiring a reference torque value of an engine of the vehicle, compensating the reference torque value based on the current discharging current of a power battery of the vehicle to obtain a compensated torque value, determining a target torque value based on the compensated torque value and the maximum allowable torque value of the engine at the current rotating speed, and finally controlling the vehicle based on the target torque value. The method can ensure the forced electricity-keeping effect and simultaneously give consideration to the fuel economy of the vehicle.

Inventors

ZHOU DAQUAN
LIU ZHIGANG
ZHAN JINCHENG
WANG SHENGTAO
TONG LEIGUANG
LI XIAOJUN
HAO YONGSHENG
ZHU YONGQING

Assignees

长城汽车股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260204

Claims (10)

1. A control method of a vehicle, characterized by comprising: acquiring a reference torque value of an engine of a vehicle under the condition that a forced electricity-saving mode of the vehicle is in an activated state, wherein the reference torque value is in a target efficient section of the engine and meets electricity-saving requirements corresponding to the forced electricity-saving mode; Compensating the reference torque value based on the current discharge current of the power battery of the vehicle to obtain a compensated torque value; determining a target torque value based on the compensated torque value and a maximum allowable torque value of the engine at the current rotation speed; and controlling the vehicle based on the target torque value.
2. The method of claim 1, wherein compensating the reference torque value based on the present discharge current of the vehicle's power battery to obtain a compensated torque value comprises: determining a torque compensation amount based on the present discharge current; And adding the torque compensation quantity and the reference torque value to obtain the compensated torque value.
3. The method of claim 2, wherein the determining a torque compensation amount based on the present discharge current comprises: calculating a current difference value between the current discharge current and the target discharge current in the forced electricity-keeping mode; determining a battery power deviation based on the current difference and a rated voltage of the power battery; The torque compensation amount is determined based on the battery power deviation.
4. The method of claim 1, wherein the obtaining a reference torque value for an engine of the vehicle comprises: obtaining an optimal efficiency torque value of the engine at the current rotating speed, and obtaining an engine demand torque value required by the current running of the vehicle; and determining the larger value of the optimal efficiency torque value and the engine required torque value as the reference torque value.
5. The method of claim 4, wherein said obtaining an engine demand torque value required for current operation of said vehicle comprises: Acquiring driver demand power, charging demand power and accessory consumption power of the vehicle; calculating the sum of the driver demand power, the charging demand power and the accessory consumption power to obtain the total demand power of the vehicle; the engine demand torque value is determined based on the total demand power of the vehicle.
6. The method of claim 1, wherein the determining a target torque value based on the compensated torque value and a maximum allowable torque value of the engine at a current rotational speed comprises: and determining the smaller value of the compensated torque value and the maximum allowable torque value as the target torque value.
7. The method of claim 1, wherein the controlling the vehicle based on the target torque value comprises: Filtering the target torque value to obtain a filtered target torque value; And controlling the vehicle based on the filtered target torque value.
8. An electronic device, the electronic device comprising: a memory for storing executable program code; a processor for calling and running the executable program code from the memory, causing the electronic device to perform the method of any one of claims 1 to 7.
9. A vehicle, characterized in that it comprises electronic equipment for performing the method according to any one of claims 1 to 7.
10. A non-volatile storage medium, characterized in that the non-volatile storage medium stores a computer program which, when executed, implements the method according to any one of claims 1 to 7.

Description

Control method of vehicle, electronic equipment, vehicle and storage medium Technical Field The present application relates to the field of hybrid control technology, and more particularly, to a control method of a vehicle, an electronic apparatus, a vehicle, and a storage medium in the field of hybrid control technology. Background At present, a forced power-saving strategy of a hybrid electric vehicle is a key for maintaining the stability of the residual capacity (SOC) of a battery and guaranteeing the power output of the whole vehicle. In the prior art, the target torque of the engine under the forced power-saving strategy is mainly determined by looking up a table in a pre-calibrated fixed MAP through the speed and the accelerator opening. However, the method cannot adaptively adjust the engine torque according to dynamic factors such as the actual running condition of the vehicle and the real-time state of the battery, and is difficult to achieve the electricity-saving effect and the fuel economy. Disclosure of Invention The application provides a control method of a vehicle, electronic equipment, the vehicle and a storage medium. The first aspect provides a control method of a vehicle, which comprises the steps of obtaining a reference torque value of an engine of the vehicle under the condition that a forced electricity protection mode of the vehicle is in an activated state, wherein the reference torque value is in a target efficient section of the engine and meets electricity protection requirements corresponding to the forced electricity protection mode, compensating the reference torque value based on the current discharging current of a power battery of the vehicle to obtain a compensated torque value, determining a target torque value based on the compensated torque value and the maximum allowable torque value of the engine at the current rotating speed, and controlling the vehicle based on the target torque value. According to the technical scheme, under the condition that the forced electricity-saving mode of the vehicle is in an activated state, the reference torque value of the engine which is in a target efficient section and can meet the electricity-saving requirement corresponding to the forced electricity-saving mode is obtained, the problem of insufficient electricity-saving caused by pursuing economy reduction in torque can be fundamentally avoided, meanwhile, the problem of poor fuel economy caused by the fact that the engine is separated from an economic section to run for meeting the electricity-saving requirement can be effectively avoided, the reference torque value is compensated based on the current discharging current of a power battery, the power gap caused by overdischarge of the battery can be pertinently made up, the electricity-saving requirement corresponding to the forced electricity-saving mode is met while the running requirement of the vehicle is met, finally, the target torque value is determined based on the maximum allowable torque value under the current rotating speed of the engine, the running safety of the engine is guaranteed while the torque regulation and control is guaranteed, the problem of failure in electricity-saving of the engine can be effectively avoided while the running in the efficient section is always maintained compared with the mode based on the fixed MAP determination, and the fuel economy of the vehicle is guaranteed. With reference to the first aspect, in some implementations of the first aspect, compensating the reference torque value based on a current discharge current of a power battery of the vehicle to obtain a compensated torque value includes determining a torque compensation amount based on the current discharge current, and adding the torque compensation amount and the reference torque value to obtain the compensated torque value. According to the technical scheme, the torque compensation quantity is determined based on the current discharging current of the power battery, so that the engine torque compensation and the actual power supply state of the battery are accurately matched, a power gap caused by excessive discharging of the battery can be pertinently made up, the power supply pressure of the battery is effectively reduced by increasing the engine torque, the electric quantity is supplemented for the battery, and the power protection requirement corresponding to the forced power protection mode is met while the running requirement of a vehicle is met. With reference to the first aspect and the foregoing implementation manner, in some implementation manners of the first aspect, determining the torque compensation amount based on the present discharge current includes calculating a current difference between the present discharge current and a target discharge current in the forced power-saving mode, determining a battery power deviation based on the current difference and a rated voltage of the power battery, and determin