New energy automobile regenerative braking force distribution method and new energy automobile

Abstract

The invention discloses a new energy automobile regenerative braking force distribution method and a new energy automobile, and relates to the technical field of new energy automobile braking. The regenerative braking force distribution method for the new energy automobile comprises the steps that the total braking forces are distributed to front wheels and rear wheels, more total braking forces are distributed to the rear wheels when the braking strength is small, and the total braking forces are distributed to the front wheels and the rear wheels according to an ideal braking force distribution mode when the braking strength is large; the rear wheel total braking force obtained through distribution is divided into the rear wheel friction braking force and the motor braking force, when the motor can meet the braking requirement, the rear wheel total braking force is distributed to the motor as much as possible, and when the motor cannot meet the braking requirement, the rear wheel friction braking force is used for compensation. When the regenerative braking force is distributed through the regenerative braking force distribution method for the new energy automobile, the braking capacity of the motor can be brought into full play on the basis that the good braking feeling is guaranteed, and efficient braking energy recovery is achieved.

Description

technical field [0001] The invention relates to the technical field of new energy vehicle braking, in particular to a new energy vehicle regenerative braking force distribution method and the new energy vehicle. Background technique [0002] Traditional fuel vehicles use mechanical friction for braking, while new energy vehicles can brake the vehicle through the anti-drag torque of the motor. At the same time, the motor generates electricity, and the generated electric energy is stored in the battery, thereby saving energy consumption of the vehicle. [0003] At present, the distribution method of regenerative braking force adopted by new energy vehicles is generally a method in which the ratio of the braking force distributed to the front and rear wheels is fixed, and the braking force of the motor is superimposed on the rear wheels. The advantage of this method is that there is little change to the original braking system, both the front and rear wheels can participate in ...

AI Technical Summary

Problems solved by technology

The advantage of this method is that there is little change to the original braking system, both the front and rear wheels can participate in the braking, and the braking feeling is better, but the disadvantage is that the braking capacity of the motor cannot be fully utilized, resulting in low braking energy recovery efficiency, and There may also be a risk of losing the brakes in some extreme conditions

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