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Car ramp auxiliary braking method and device and electric car

A ramp assist and auxiliary braking technology, applied in electric vehicles, control devices, control drives, etc., can solve problems such as shortening the life of the brake caliper, accelerating the wear of the brake disc, and increasing the load of the brake system.

Active Publication Date: 2019-10-08
重庆长安新能源汽车科技有限公司
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0003] For pure electric vehicles, since they do not have an engine, when a vehicle on a slope is performing start braking, if it only relies on the electronic stability control system to control the speed of the vehicle, the load on the braking system of the vehicle will be increased, especially Will accelerate the wear of the brake disc and shorten the life of the brake caliper

Method used

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  • Car ramp auxiliary braking method and device and electric car
  • Car ramp auxiliary braking method and device and electric car
  • Car ramp auxiliary braking method and device and electric car

Examples

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Embodiment Construction

[0103] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0104] refer to figure 1 , the invention provides a method for assisting braking on a slope of an automobile, comprising:

[0105] Step 101, detecting whether the current working state of the vehicle satisfies the hill assist braking state.

[0106] Among them, the hill assist braking state refers to that after the hill assist braking button set in the compartment is turned on, when the relevant working parameters of the vehicle meet the braki...

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Abstract

The invention aims to provide car ramp auxiliary braking method and device and an electric car, so that the effect of reducing the load of a braking system of a vehicle when the vehicle brakes on a ramp is achieved. The car ramp auxiliary braking method comprises the following steps of detecting whether the current working state of the vehicle meets a ramp auxiliary braking state or not; if the current working state of the vehicle meets the ramp auxiliary braking state, determining a first target demand braking torque for keeping the vehicle speed of the vehicle at the current real-time vehicle speed; and controlling the vehicle in performing motor braking and / or mechanical braking according to the first target demand braking torque.

Description

technical field [0001] The invention relates to the field of electric vehicle braking, in particular to a method and device for assisting braking on a vehicle ramp and an electric vehicle. Background technique [0002] For traditional fuel vehicles equipped with hill assist braking function, the realization of its hill assist braking function is to combine engine braking and electronic stability control system (Electronic Stability Program, ESP) to make the vehicle Drive at the target speed set by the driver. When the vehicle is going uphill or downhill, the vehicle can keep the vehicle from slipping through the auxiliary braking function. [0003] For pure electric vehicles, since they do not have an engine, when a vehicle on a slope is performing start braking, if it only relies on the electronic stability control system to control the speed of the vehicle, the load on the braking system of the vehicle will be increased, especially It will accelerate the wear of the brak...

Claims

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Application Information

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IPC IPC(8): B60L15/20B60L7/24
CPCB60L15/2018B60L7/24B60L2240/12B60L2240/48B60L2240/642B60L2250/26Y02T10/72
Inventor 曾禹乔闵磊陈卓翟钧苏岭
Owner 重庆长安新能源汽车科技有限公司
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