CN-121973755-A - Vehicle power distribution control method, device, computer equipment and storage medium

CN121973755ACN 121973755 ACN121973755 ACN 121973755ACN-121973755-A

Abstract

The invention relates to the technical field of vehicle control, and discloses a vehicle power distribution control method, a device, computer equipment and a storage medium, wherein the method comprises the steps of detecting whether a target vehicle meets the triggering condition of a battery limited mode; and if the triggering condition of the battery limited mode is met, controlling the target vehicle to enter the battery limited mode, acquiring a power adjustment strategy corresponding to the battery limited mode, and controlling the target vehicle to run in the battery limited mode by utilizing the power adjustment strategy. The invention solves the problem that the vehicle can normally run only after waiting for heating to finish when the low-temperature battery power is limited in the prior art.

Inventors

JIANG RUIJIE
Niu Daxu
JIANG TAO

Assignees

贵州吉利汽车制造有限公司
浙江吉利控股集团有限公司
吉利汽车研究院（宁波）有限公司

Dates

Publication Date: 20260505
Application Date: 20260324

Claims (10)

1. A vehicle power distribution control method, characterized by comprising: Detecting whether a target vehicle meets a triggering condition of a battery limited mode; If the triggering condition of the battery limited mode is met, controlling the target vehicle to enter the battery limited mode, and acquiring a power adjustment strategy corresponding to the battery limited mode; And controlling the target vehicle to run in the battery limited mode by using the power adjustment strategy.
2. The method of claim 1, wherein detecting whether the target vehicle satisfies a trigger condition for a battery limited mode comprises: obtaining the maximum charging power, the battery pack temperature and the environment temperature of a battery in the target vehicle; comparing the maximum charging power with the charging limiting power, comparing the temperature of the battery pack with a first low-temperature threshold value, and comparing the ambient temperature with a second low-temperature threshold value to obtain a comparison result; and determining whether the target vehicle meets the triggering condition of the power limited mode according to the comparison result.
3. The method of claim 2, wherein the determining whether the target vehicle satisfies a trigger condition for a power limited mode based on the comparison result comprises: if the comparison result is that the maximum charging power is smaller than the charging limiting power, the battery pack temperature is smaller than the first low-temperature threshold, and the environment temperature is smaller than the second low-temperature threshold, judging that the target vehicle meets the triggering condition of the battery limiting mode; And if the comparison result is that the maximum charging power is greater than or equal to the charging limiting power, or the battery pack temperature is greater than or equal to the first low-temperature threshold, or the ambient temperature is greater than or equal to the second low-temperature threshold, judging that the target vehicle does not meet the triggering condition of the battery limiting mode.
4. The method according to claim 3, characterized in that, after determining that the target vehicle does not satisfy the trigger condition of the battery limited mode, the method further comprises: Controlling the target vehicle to operate in a non-battery limited mode; in the non-battery limited mode, determining a charging demand power based on state data of the target vehicle, and acquiring a current driving power and a current accessory power of the target vehicle; Calculating a first power generation of a starter generator in the target vehicle according to the charging demand power, the current driving power and the current accessory power; calculating a first drive limit power of the target vehicle in the non-battery limited mode using the first generated power; the target vehicle is controlled to travel in the non-battery limited mode based on the first electric power generation and the first drive limit power.
5. The method of claim 1, wherein the controlling the target vehicle to travel in the battery limited mode using the power adjustment strategy comprises: Calculating a second generated power of a starting generator in the target vehicle according to the power adjustment strategy; calculating a target drive restriction power of the target vehicle in the battery restriction mode using the second generated power; The target vehicle is controlled to travel in the battery limited mode based on the second generated power and the target drive limited power.
6. The method of claim 5, wherein calculating a second generated power of a starter generator in the target vehicle according to the power adjustment strategy comprises: acquiring a dynamic compensation coefficient, a maximum charging power and a current charging power of a battery in the target vehicle, and calculating the dynamic compensation power according to the dynamic compensation coefficient, the maximum charging power and the current charging power; determining charging demand power based on the state data of the target vehicle, and acquiring current driving power and current accessory power of the target vehicle; And calculating second generated power of the starting generator according to the charging required power, the current driving power, the current accessory power and the dynamic compensation power.
7. The method according to claim 5, wherein calculating a target drive limit power of the target vehicle in the battery limit mode using the second generated power includes: Calculating a second drive limit power of the target vehicle in a non-battery limited mode using the second generated power; and acquiring the driving configuration power of the battery limited mode, selecting the maximum value of the second driving limited power and the driving configuration power, and taking the maximum value as the target driving limited power of the target vehicle in the battery limited mode.
8. A vehicle power distribution control apparatus, characterized by comprising: the detection module is used for detecting whether the target vehicle meets the triggering condition of the battery limited mode; the first control module is used for controlling the target vehicle to enter the battery limited mode and acquiring a power adjustment strategy corresponding to the battery limited mode if the triggering condition of the battery limited mode is met; and the second control module is used for controlling the target vehicle to run in the battery limited mode by utilizing the power adjustment strategy.
9. A computer device, comprising: A memory and a processor in communication with each other, the memory having stored therein computer instructions which, upon execution, cause the processor to perform the method of any of claims 1 to 7.
10. A computer readable storage medium having stored thereon computer instructions for causing a computer to perform the method of any one of claims 1 to 7.

Description

Vehicle power distribution control method, device, computer equipment and storage medium Technical Field The present invention relates to the field of vehicle control technologies, and in particular, to a vehicle power distribution control method, device, computer equipment, and storage medium. Background With the rapid development of new energy automobiles, hybrid electric vehicles have more stable endurance and power performance in winter low-temperature environments than pure electric vehicles. However, under the extreme low-temperature electric field deficiency condition, the charging and discharging capacities of the power battery are obviously reduced, so that the response of the driving power of the whole vehicle is delayed, the energy management efficiency is reduced, and even the vehicle stall is caused when the driving power is severe, and the normal running cannot be maintained. At present, aiming at the problems of insufficient power and slow recovery of a hybrid electric vehicle under a low-temperature working condition, a conventional solution mainly relies on a thermal management system to actively heat a battery, and an engine is started to charge after the temperature of the battery is raised to a certain range, so that the power of the whole vehicle is finally recovered to be normal. However, the method cannot ensure the normal running capability of the vehicle in the battery heating stage, and the user can obtain complete power after waiting for heating, so that the vehicle using experience is seriously affected. In the prior art, although the system recovery speed is accelerated to a certain extent through dynamic power adjustment, engine waste heat utilization and other modes, the problem of power interruption of a vehicle in the heating process still cannot be fundamentally solved, and the driving requirement of the vehicle in a start-up and travel-through mode cannot be met. Disclosure of Invention In view of this, the embodiments of the present invention provide a vehicle power distribution control method, apparatus, computer device, and storage medium, so as to solve the problem in the prior art that a vehicle can normally run only after waiting for heating to complete when low-temperature battery power is limited. In a first aspect, an embodiment of the present invention provides a vehicle power distribution control method, including: Detecting whether a target vehicle meets a triggering condition of a battery limited mode; If the triggering condition of the battery limited mode is met, controlling the target vehicle to enter the battery limited mode, and acquiring a power adjustment strategy corresponding to the battery limited mode; And controlling the target vehicle to run in the battery limited mode by using the power adjustment strategy. Further, the detecting whether the target vehicle meets the triggering condition of the battery limited mode includes: obtaining the maximum charging power, the battery pack temperature and the environment temperature of a battery in the target vehicle; comparing the maximum charging power with the charging limiting power, comparing the temperature of the battery pack with a first low-temperature threshold value, and comparing the ambient temperature with a second low-temperature threshold value to obtain a comparison result; and determining whether the target vehicle meets the triggering condition of the power limited mode according to the comparison result. Further, the determining whether the target vehicle meets the triggering condition of the power limited mode according to the comparison result includes: if the comparison result is that the maximum charging power is smaller than the charging limiting power, the battery pack temperature is smaller than the first low-temperature threshold, and the environment temperature is smaller than the second low-temperature threshold, judging that the target vehicle meets the triggering condition of the battery limiting mode; And if the comparison result is that the maximum charging power is greater than or equal to the charging limiting power, or the battery pack temperature is greater than or equal to the first low-temperature threshold, or the ambient temperature is greater than or equal to the second low-temperature threshold, judging that the target vehicle does not meet the triggering condition of the battery limiting mode. Further, after determining that the target vehicle does not satisfy the trigger condition of the battery limited mode, the method further includes: Controlling the target vehicle to operate in a non-battery limited mode; in the non-battery limited mode, determining a charging demand power based on state data of the target vehicle, and acquiring a current driving power and a current accessory power of the target vehicle; Calculating a first power generation of a starter generator in the target vehicle according to the charging demand power, the current driving power and the c