CN-121973640-A - Vehicle control method, vehicle and storage medium

CN121973640ACN 121973640 ACN121973640 ACN 121973640ACN-121973640-A

Abstract

The invention discloses a vehicle control method, a vehicle and a storage medium, and relates to the technical field of vehicle control. The method comprises the steps of obtaining the running state of a vehicle, wherein the running state comprises a parking state and a driving state, obtaining a gear state and a vehicle speed threshold signal state of the vehicle in response to the running state of the vehicle being the parking state, determining a parking control strategy according to the gear state and the vehicle speed threshold signal state, obtaining an ignition switch signal state, a vehicle-mounted network signal state and the vehicle speed threshold signal state of the vehicle in response to the running state of the vehicle being the driving state, and determining a driving control strategy according to the ignition switch signal state, the vehicle-mounted network signal state and the vehicle speed threshold signal state, wherein the driving control strategy is used for controlling the state of a relay of the vehicle. The invention solves the technical problems that unexpected vehicle sliding and high-voltage system outage are difficult to effectively prevent in the related technology, and further the driving safety is affected.

Inventors

WANG BAOPING
LI WEI
ZHANG CHANGTAO
CI WEICHENG
REN ZHIHENG
LI HAODONG
PEI XIAOYU
MU DEZHI

Assignees

中国第一汽车股份有限公司

Dates

Publication Date: 20260505
Application Date: 20260114

Claims (10)

1. A vehicle control method characterized by comprising: Acquiring the running state of a vehicle, wherein the running state comprises a parking state and a driving state; Responding to the running state of the vehicle as the parking state, acquiring a gear state and a vehicle speed threshold signal state of the vehicle, and determining a parking control strategy according to the gear state and the vehicle speed threshold signal state, wherein the parking control strategy is used for controlling torque output of a motor of the vehicle; And responding to the running state of the vehicle as the driving state, acquiring an ignition switch signal state, a vehicle-mounted network signal state and the vehicle speed threshold signal state of the vehicle, and determining a driving control strategy according to the ignition switch signal state, the vehicle-mounted network signal state and the vehicle speed threshold signal state, wherein the driving control strategy is used for controlling the state of a relay of the vehicle.
2. The vehicle control method according to claim 1, characterized in that determining the parking control strategy based on the shift state and the vehicle speed threshold signal state includes: Responding to the gear state as a parking gear or neutral gear, and the vehicle speed threshold signal state as a high level, determining that the vehicle runs on a slope, wherein the vehicle speed threshold signal state as the high level is used for representing that the vehicle speed of the vehicle is larger than a preset threshold vehicle speed; and in response to the occurrence of the landslide phenomenon of the vehicle, determining the parking control strategy as activating a whole vehicle controller of the vehicle so as to control the high-voltage power-on of the vehicle, and activating a motor controller of the vehicle so as to control the motor of the vehicle to output braking torque.
3. The vehicle control method according to claim 2, characterized in that the vehicle control method further comprises: And triggering an alarm mechanism in response to executing the parking control strategy, wherein the alarm mechanism comprises an audible and visual alarm and a remote communication alarm.
4. The vehicle control method according to claim 2, characterized in that the vehicle control method further comprises: responding to the high level of the vehicle speed threshold signal state, and checking the vehicle speed threshold signal state to obtain a checking result; and responding to the verification result to indicate that the vehicle speed threshold signal state is invalid in the high level, and determining that the vehicle does not slide on the slope.
5. The vehicle control method according to claim 2, characterized in that the vehicle control method further comprises: The direction of the braking torque is determined according to the vehicle speed direction of the vehicle.
6. The vehicle control method according to claim 1, wherein the driving control strategy includes a first driving control strategy and a second driving control strategy, and determining the driving control strategy based on the ignition switch signal state, the on-vehicle network signal state, and the vehicle speed threshold signal state includes: Determining the first driving control strategy to control the relay to keep the current state in response to the ignition switch signal state being high level and the vehicle-mounted network signal state being abnormal; And determining the second driving control strategy to control the relay to be in a closed state in response to the ignition switch signal state being low level or suspended and the vehicle speed threshold signal state being high level.
7. The vehicle control method according to claim 6, wherein the driving control strategy further includes a third driving control strategy and a fourth driving control strategy, and determining the driving control strategy according to the ignition switch signal state, the on-vehicle network signal state, and the vehicle speed threshold signal state includes: responding to the state of the ignition switch signal to be low level or suspended, the state of the vehicle speed threshold signal to be low level and the state of the vehicle-mounted network signal to be normal, and determining the third driving control strategy to be based on the state of the relay controlled by the vehicle-mounted network signal; And responding to the ignition switch signal state to be low level or suspended, the vehicle speed threshold signal state to be low level and the vehicle-mounted network signal state to be abnormal, and determining the fourth driving control strategy to control the relay to be in an off state.
8. The vehicle control method according to claim 6, characterized in that the vehicle control method further comprises: And controlling a motor controller of the vehicle to be in an activated state in response to the running state of the vehicle being the driving state, so that the motor controller performs magnetic field control under a preset condition.
9. A vehicle, characterized by comprising: a memory storing an executable program; A processor for executing the executable program, wherein the executable program executes the vehicle control method according to any one of claims 1 to 8 when executed.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium includes a stored executable program, wherein the executable program, when run, controls a device in which the computer-readable storage medium is located to execute the vehicle control method according to any one of claims 1 to 8.

Description

Vehicle control method, vehicle and storage medium Technical Field The present invention relates to the field of vehicle control technology, and in particular, to a vehicle control method, a vehicle, and a storage medium. Background With the popularization of new energy automobiles, the safety of the new energy automobiles is a focus of attention of users. Particularly under complex working conditions, the safety protection of the high-voltage system of the vehicle is important. In the moving process of the new energy vehicle, if the high-voltage relay is undesirably disconnected, the normal operation of the motor controller is directly affected, even the power semiconductor device in the inverter breaks down, and serious vehicle damage and potential safety hazards are caused. In addition, when the vehicle is in a parking state, if the hand brake fails or other factors cause the vehicle to slide on a slope, and a high-voltage system of the vehicle fails to respond in time, the sliding on the slope cannot be prevented through the braking moment of the motor, and the risk of driving accidents is increased. Therefore, how to effectively prevent unexpected vehicle from sliding down a slope and prevent a high-voltage system from being powered off, and further guarantee driving safety is one of important technical problems in the related technical fields. In view of the above problems, no effective solution has been proposed at present. Disclosure of Invention The embodiment of the invention provides a vehicle control method, a vehicle and a storage medium, which at least solve the technical problems that unexpected vehicle sliding and high-voltage system outage are difficult to effectively prevent in the related technology, and further the driving safety is influenced. According to one aspect of the embodiment of the invention, a vehicle control method is provided, which comprises the steps of obtaining an operation state of a vehicle, wherein the operation state comprises a parking state and a driving state, obtaining a gear state and a vehicle speed threshold signal state of the vehicle in response to the operation state of the vehicle being the parking state, and determining a parking control strategy according to the gear state and the vehicle speed threshold signal state, wherein the parking control strategy is used for controlling torque output of a motor of the vehicle, obtaining an ignition switch signal state, a vehicle-mounted network signal state and the vehicle speed threshold signal state of the vehicle in response to the operation state of the vehicle being the driving state, and determining a driving control strategy according to the ignition switch signal state, the vehicle-mounted network signal state and the vehicle speed threshold signal state, wherein the driving control strategy is used for controlling the state of a relay of the vehicle. Optionally, determining the parking control strategy according to the gear state and the vehicle speed threshold signal state comprises determining that a vehicle has a slip phenomenon in response to the gear state being a parking gear or neutral gear and the vehicle speed threshold signal state being a high level, wherein the high level of the vehicle speed threshold signal state is used for representing that the vehicle speed of the vehicle is greater than a preset threshold vehicle speed, determining that the parking control strategy is to activate a whole vehicle controller of the vehicle in response to the vehicle having the slip phenomenon so as to control high-voltage power-on of the vehicle, and activating a motor controller of the vehicle so as to control the motor of the vehicle to output braking torque. Optionally, the vehicle control method further comprises triggering an alarm mechanism in response to executing the parking control strategy, wherein the alarm mechanism comprises an audible and visual alarm and a remote communication alarm. Optionally, the vehicle control method further comprises the steps of responding to the fact that the vehicle speed threshold signal state is high level, checking the vehicle speed threshold signal state to obtain a checking result, responding to the checking result to indicate that the vehicle speed threshold signal state is invalid in the high level, and determining that the vehicle does not slide. Optionally, the vehicle control method further comprises determining a direction of braking torque according to a vehicle speed direction of the vehicle. Optionally, the driving control strategy comprises a first driving control strategy and a second driving control strategy, and the driving control strategy is determined according to the ignition switch signal state, the vehicle-mounted network signal state and the vehicle speed threshold signal state, and comprises the steps of determining that the first driving control strategy is a control relay to keep the current state in response to the ignition switch sign