Vehicle brake assist method, device, controller and vehicle

Abstract

The present disclosure relates to the vehicle field, in particular, to a vehicle braking assist method, device, controller and vehicle. The method includes: obtaining the current ambient temperature and vehicle speed; when it is determined that the vehicle braking system is in a deformed state and the vehicle speed is zero, adjusting the braking clearance of the vehicle braking system to a preset safety width, and setting the current ambient temperature Set to the default ambient temperature, where the brake clearance is the gap between the brake disc and the friction plate. In this way, it can be determined whether the vehicle braking system is in a deformed state, and according to the vehicle driving state, it is determined that under the condition of vehicle safety, the braking clearance of the deformed vehicle braking system is adjusted to ensure that the braking clearance remains at The preset safety width ensures that the braking effect of the vehicle is not affected, avoiding the accelerated wear of the friction plate, and further ensuring driving safety.

Description

technical field [0001] The present disclosure relates to the vehicle field, in particular, to a vehicle braking assist method, device, controller and vehicle. Background technique [0002] The parking brake system is used to stabilize the vehicle after the vehicle has come to a complete stop to avoid accidents caused by rolling when the vehicle is parked on a slope. Electric parking brake system, English abbreviation EPB (Electrical Park Brake), is to control the friction between the friction plate and the brake disc by controlling the motor, so as to provide braking force for the vehicle. [0003] The ambient temperature in which humans can live can be as low as -40°C, or even lower, and as high as 60°C or higher. For example, in China, the temperature difference from the warmest area to the coldest area has appeared above 100°C of. When the vehicle is at different ambient temperatures, the friction plates and brake discs in the parking brake system may expand with heat a...

AI Technical Summary

Problems solved by technology

When the vehicle is at different ambient temperatures, the friction plates and brake discs in the parking brake system may expand with heat and contract with cold. Therefore, the friction plates in the parking brake system of the same vehicle at different ambient temperatures The brake gap between the brake disc and the brake disc will also be different, and the greater the temperature change around the vehicle, the greater the deformation of the friction plate and the brake disc. If this phenomenon is not adjusted, then the same braking method will Different braking forces will be produced according to the actual situation, which will seriously affect the braking effect of the vehicle, and will also accelerate the wear of the friction plate, seriously affecting the life of the parking brake system motor, and even affecting driving safety.

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