CN-122009108-A - Vehicle starting and braking control method and device, storage medium and vehicle

CN122009108ACN 122009108 ACN122009108 ACN 122009108ACN-122009108-A

Abstract

The invention discloses a vehicle starting and braking control method and device, a storage medium and a vehicle. The vehicle starting and braking control method comprises the steps of obtaining the real-time accelerator pedal opening of a vehicle when the vehicle is in a parking state, judging whether the real-time accelerator pedal opening meets a parking release condition, if so, sending an original parking torque of an electronic parking braking system of the vehicle to an electronic mechanical braking system, generating a clamping torque with the same size as the original parking torque according to the original parking torque by the electronic mechanical braking system, obtaining a real-time driving torque according to the real-time accelerator pedal opening, and controlling the clamping torque to be reduced along with the increase of the real-time driving torque. The invention can reduce the shake and drag problems in the vehicle starting process, further ensure the stability of the vehicle starting process and improve the driving comfort of the vehicle.

Inventors

LI MINQIANG
HUANG MEIPENG
ZHANG ZHIYOU

Assignees

耐世特汽车系统（苏州）有限公司

Dates

Publication Date: 20260512
Application Date: 20241111

Claims (10)

1. A vehicle launch brake control method, characterized in that the method comprises: When the vehicle is in a parking state, acquiring the real-time accelerator pedal opening of the vehicle, and judging whether the real-time accelerator pedal opening meets a parking release condition or not; If the original parking torque is met, the original parking torque of an electronic parking brake system of the vehicle is sent to an electronic mechanical brake system, and the electronic mechanical brake system generates clamping torque with the same magnitude as the original parking torque according to the original parking torque; And obtaining a real-time driving moment according to the opening degree of the real-time accelerator pedal, and controlling the clamping moment to be reduced along with the increase of the real-time driving moment.
2. The vehicle launch brake control method of claim 1, wherein the method further comprises: And judging whether the original parking torque is released or not according to the clamping torque.
3. The vehicle launch brake control method according to claim 2, wherein said determining whether the original parking torque release is completed according to the clamping torque includes: if the clamping moment is smaller than a preset threshold value, judging that the original parking moment is released; If the clamping moment is greater than or equal to the preset threshold, judging that the original parking moment is not released, and continuously controlling the clamping moment generated by the electromechanical brake system to synchronously reduce according to the real-time driving moment until the clamping moment is smaller than the preset threshold.
4. The vehicle start-stop brake control method according to claim 3, characterized by further comprising, after the determination that the original parking torque release is completed: And controlling the vehicle to start according to the driving moment corresponding to the opening degree of the accelerator pedal of the vehicle at the moment.
5. The vehicle launch brake control method according to claim 1, wherein said controlling the clamping torque to decrease following the increase in the real-time drive torque includes: The clamping torque generated by the electromechanical brake system decreases with the increase of the real-time driving torque, and the clamping torque and the real-time driving torque satisfy the following conditions: V Driving device +V Clamping device ＝V Original, original ; wherein V Driving device is the real-time driving torque, V Clamping device is the clamping torque, and V Original, original is the original parking torque.
6. The vehicle start brake control method according to claim 1, characterized in that determining whether the real-time accelerator pedal opening degree satisfies a parking release condition includes: if the real-time accelerator pedal opening is larger than a preset opening, the parking release condition is met; And if the real-time accelerator pedal opening is smaller than or equal to the preset opening, the parking release condition is not met.
7. The vehicle start brake control method according to claim 1, wherein the transmitting the original parking torque of the electronic parking brake system of the vehicle to the electro-mechanical brake system if the original parking torque is satisfied, generating the clamping torque having the same magnitude as the original parking torque by the electro-mechanical brake system according to the original parking torque, comprises: And if the parking release condition is met, transmitting the original parking torque of the electronic parking brake system of the vehicle to the electronic mechanical brake system, so that the electronic mechanical brake system generates the clamping torque with the same magnitude as the original parking torque, and controlling an electromagnetic brake in the electronic parking brake system to be released.
8. A vehicle start brake control apparatus for executing the vehicle start brake control method according to any one of claims 1 to 7, the vehicle start brake control apparatus comprising: the acquisition module is used for acquiring the real-time accelerator pedal opening of the vehicle when the vehicle is in a parking state and judging whether the real-time accelerator pedal opening meets a parking release condition or not; the torque switching module is used for transmitting the original parking torque of the electronic parking brake system of the vehicle to the electronic mechanical brake system when the parking release condition is met, and the electronic mechanical brake system generates clamping torque with the same magnitude as the original parking torque according to the original parking torque; And the moment release module is used for obtaining a real-time driving moment according to the opening degree of the real-time accelerator pedal and controlling the clamping moment to be reduced along with the increase of the real-time driving moment.
9. A storage medium containing computer executable instructions which, when executed by a computer processor, are for performing the vehicle launch brake control method of any one of claims 1-7.
10. A vehicle comprising the vehicle start brake control apparatus according to claim 8.

Description

Vehicle starting and braking control method and device, storage medium and vehicle Technical Field The embodiment of the invention relates to the technical field of automobile braking, in particular to a vehicle starting braking control method and device, a storage medium and a vehicle. Background Electronic parking Brake systems (EPB, electrical Park Brake) have been increasingly used in medium-high end vehicle types in recent years to facilitate the reduction of driver operations and ensure vehicle parking safety. In the prior art, the control process of the automatic release of the parking calipers of the EPB is that when an accelerator pedal of a vehicle is stepped on and the driving force generated by the accelerator pedal is larger than the sum of all backward sliding moments, the parking calipers of the EPB are automatically released and the parking moment is withdrawn. Therefore, when the vehicle needs to be switched from the parking state to the driving state, the driver can control the parking torque of the accelerator pedal to control the EPB to be automatically released so as to realize the starting operation of the vehicle. In the starting process of the vehicle, delay occurs in the process of automatically releasing the parking calipers of the EPB and withdrawing the parking torque, and if the accelerator pedal is operated too much or too fast by a driver, the shaking or dragging of the whole vehicle can be caused, so that the driving comfort of the vehicle is affected. Disclosure of Invention The invention provides a vehicle starting braking control method and device, a storage medium and a vehicle, so as to reduce the shake and drag problems in the vehicle starting process and improve the driving comfort of the vehicle. In a first aspect, an embodiment of the present invention provides a vehicle starting braking control method, where the method includes: When the vehicle is in a parking state, acquiring the real-time accelerator pedal opening of the vehicle, and judging whether the real-time accelerator pedal opening meets a parking release condition or not; If the original parking torque is met, the original parking torque of an electronic parking brake system of the vehicle is sent to an electronic mechanical brake system, and the electronic mechanical brake system generates clamping torque with the same magnitude as the original parking torque according to the original parking torque; And obtaining a real-time driving moment according to the opening degree of the real-time accelerator pedal, and controlling the clamping moment to be reduced along with the increase of the real-time driving moment. Further, the method further comprises: And judging whether the original parking torque is released or not according to the clamping torque. Further, the determining, according to the clamping torque, whether the original parking torque release is completed includes: if the clamping moment is smaller than a preset threshold value, judging that the original parking moment is released; If the clamping moment is greater than or equal to the preset threshold, judging that the original parking moment is not released, and continuously controlling the clamping moment generated by the electromechanical brake system to synchronously reduce according to the real-time driving moment until the clamping moment is smaller than the preset threshold. Further, after the determination that the original parking torque is released, the method further includes: And controlling the vehicle to start according to the driving moment corresponding to the opening degree of the accelerator pedal of the vehicle at the moment. Further, said controlling said clamping torque to decrease following said increasing of said real-time drive torque comprises: The clamping torque generated by the electromechanical brake system decreases with the increase of the real-time driving torque, and the clamping torque and the real-time driving torque satisfy the following conditions: V Driving device +V Clamping device ＝V Original, original ; wherein V Driving device is the real-time driving torque, V Clamping device is the clamping torque, and V Original, original is the original parking torque. Further, determining whether the real-time accelerator pedal opening meets a parking release condition includes: if the real-time accelerator pedal opening is larger than a preset opening, the parking release condition is met; And if the real-time accelerator pedal opening is smaller than or equal to the preset opening, the parking release condition is not met. Further, if the original parking torque is satisfied, the original parking torque of the electronic parking brake system of the vehicle is sent to the electronic mechanical brake system, and the electronic mechanical brake system generates a clamping torque with the same magnitude as the original parking torque according to the original parking torque, including: And if the parking releas