Emergency braking system and method used for electric automobile and electric automobile

Abstract

The invention discloses an emergency braking system and method used for an electric automobile and the electric automobile. The emergency braking system comprises a vehicle control module, an ESP emergency braking module, a feedback emergency braking module and an EPB emergency braking module. When the electric automobile is in an emergency braking state, the vehicle control module judges whethera braking execution mechanism of the electric automobile executes braking normally or not, if the braking execution mechanism executes braking normally, the ESP emergency braking module is triggered to conduct emergency braking, if the braking execution mechanism does not execute braking normally, the vehicle control module judges whether the battery state of the electric automobile meets a presetfeedback emergency braking condition or not, if the battery state meets the preset feedback emergency braking condition, the feedback emergency braking module is triggered to conduct feedback braking, and if the battery state does not meet the preset feedback emergency braking condition, the EPB emergency braking module is triggered to conduct EPB braking. A complete decision scheme for emergencybraking is supplied and can be well applied to the electric automobile, so that the safety and braking stability of the electric automobile are improved, and the user experience level is improved.

Description

technical field [0001] The invention relates to the field of vehicle emergency braking, in particular to an emergency braking system and method for an electric vehicle and the electric vehicle. Background technique [0002] Emergency braking refers to a braking method in which the driver quickly steps on the brake pedal and stops the car within the shortest distance when the car encounters an emergency during driving. Emergency braking will cause great damage to the car and tires, or the difference in adhesion coefficient will cause the car to sway, turn around, lose control of the orientation or skid, especially on wet and slippery roads, which may cause accidents. Only when it is dangerous, do it Use the emergency brake. Therefore, the decision-making scheme for emergency braking is particularly important, which will directly affect the safety and braking stability of the vehicle. [0003] However, at present, due to the lack of a decision-making scheme for emergency bra...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide an emergency braking system and method for electric vehicles and an emergency braking system for electric vehicles to overcome the defects of low vehicle safety and braking stability in the prior art.

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