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EPB (Electrical Park Brake) slip slope reclamping method for new energy automobiles

A technology for new energy vehicles and slopes, which is applied in the field of vehicle control and can solve problems such as poor reliability

Active Publication Date: 2020-01-14
ZHEJIANG LEAPMOTOR TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: the technical problem of poor parking reliability of the current new energy vehicle EPB

Method used

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  • EPB (Electrical Park Brake) slip slope reclamping method for new energy automobiles
  • EPB (Electrical Park Brake) slip slope reclamping method for new energy automobiles
  • EPB (Electrical Park Brake) slip slope reclamping method for new energy automobiles

Examples

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Embodiment 1

[0021] A new energy vehicle with EPB sliding slope retightening method, such as figure 1 As shown, this embodiment judges whether the brake disc needs to be further clamped through the following steps: Step 1: Determine whether the continuous driving distance before this parking exceeds the set threshold S, and if the continuous driving distance exceeds the set threshold S, judge whether the brake disc The disc needs to be further clamped; Step 2: Determine whether the temperature of the brake disc is higher than the set threshold when parking. If the temperature of the brake disc is higher than the set threshold, it is judged that the brake disc needs to be further clamped; If the brake disc needs to be further clamped, the EPB is used to control the brake disc to clamp according to the preset increment; Step 4: The wheel displacement is periodically detected by the wheel speed sensor. If the wheel displacement exceeds the set threshold, the EPB is used to control the brake di...

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Abstract

The invention relates to the technical field of automobile control, in particular to an EPB slip slope reclamping method for new energy automobiles. The EPB slip slope reclamping method is characterized in that whether a brake disc needs further clamping or not is judged through the following steps that step1, if a continuous driving distance exceeds a set threshold value S in parking, the brake disc is judged to need the further clamping; step2, if the brake disc temperature is above a set threshold value in the parking, the brake disc is judged to need the further clamping; and step3, a wheel speed sensor periodically detects vehicle wheel displacement after the parking, and if the vehicle wheel displacement exceeds the set threshold value, the brake disc is controlled to be clamped again and reset the vehicle wheel displacement through EPB. The EPB slip slope reclamping method for the new energy automobiles has the substantive effects that the brake disc state is grasped through a variety of steps, guarantee is provided for the parking stability, and the parking safety is improved; and by means of brake disc temperature calculation, the brake disc temperature state is grasped under the situation of not adding a temperature sensor, the fact that reliable parking can still be performed when the brake disc temperature is too high is guaranteed, and the vehicle safety is improved.

Description

technical field [0001] The invention relates to the technical field of automobile control, in particular to an EPB slope retightening method for new energy vehicles. Background technique [0002] EPB is the abbreviation of Electrical Park Brake, the Chinese name is electronic parking brake system, it replaces the traditional mechanical lever and tire cable, can provide better assistance for the driver, is safer than the traditional lever handbrake, will not The braking effect is changed according to the driver's strength, turning the traditional handbrake lever into a button. In the EPB, the braking force can be adjusted to match the requirements of the longitudinal inclination. When the car starts, press the button and it automatically releases the brakes. During the braking process, the brake disc will heat up and the temperature will rise, and the performance of the brake disc will decrease after the temperature rises. If it is lower than a certain threshold, it will le...

Claims

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Application Information

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IPC IPC(8): B60T8/172B60T8/58B60T17/22
CPCB60T8/1725B60T8/58B60T17/22
Inventor 宋建勋尹浩
Owner ZHEJIANG LEAPMOTOR TECH CO LTD
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