Parallel type electric vehicle regeneration brake system and control method thereof

Abstract

The invention discloses a parallel type electric vehicle regeneration brake system and a control method of the parallel type electric vehicle regeneration brake system. The parallel type electric vehicle regeneration brake system comprises a central processing unit, a vehicular speed sensor, an acceleration pedal position sensor, a brake pedal position sensor, a battery management system, a power battery, a motor controller and an electric motor; the central processing unit is respectively and electrically connected with the vehicular speed sensor, the acceleration pedal position sensor, the brake pedal position sensor, the battery management system, and the motor controller; the battery management is also electrically connected with the power battery; the motor controller is further electrically connected with the electric motor. According to the vehicular speed, the acceleration pedal position, the brake pedal position and acceptable maximum power of the current power battery, the current maximum useable feedback torque can be calculated, the highest feedback power is limited, and the power battery is protected.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to a parallel electric vehicle regenerative braking system and a control method thereof. Background technique [0002] With the increasing shortage of traditional energy sources, people pay more and more attention to electric vehicles, and the development of electric vehicles has attracted more and more attention. Due to the limitation of battery energy density, the mileage of electric vehicles is not high, and the motor itself can be used as a drive and power generator. The dual characteristics of the motor, using the motor as a generator, convert the kinetic energy wasted in the braking process of the vehicle into electrical energy and store it in the power system without adding additional devices, which can effectively improve energy utilization and increase cruising range. Energy saving. The existing electric vehicle regenerative braking system does not limit the maxi...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the technical problem that the existing electric vehicle regenerative braking system does not limit the maximum feedback power according to the SOP of the power battery when calculating the feedback torque, and may cause battery damage or life reduction due to excessive feedback current, and provides A parallel electric vehicle regenerative braking system and its control method are proposed, which calculates the current maximum available feedback torque according to the vehicle speed, accelerator pedal position, brake pedal position and the maximum power that the current power battery can accept, and the maximum feedback power Limit and protect the power battery

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