Automobile brake system with energy recovery function

Abstract

The invention discloses an automobile brake system with an energy recovery function. The automobile brake system with the energy recovery function comprises a main control unit, a brake pedal position detection unit, a motor control unit, a wheel speed sensor, a gear sensor, a power converter and a storage battery, wherein the brake pedal position detection unit transmits a pedal stroke signal to the main control unit when an automobile is braked. The motor control unit controls the size of output current of a motor to enable regenerative braking torque of a motor to work according to a command signal transmitted by the main control unit. The wheel speed sensor detects speed of driving wheels of the automobile. The gear sensor is arranged on a transmission, the power converter is connected with the motor, and the storage battery is connected with the power converter. The motor control unit, the wheel speed sensor, the gear sensor and the brake pedal position detection unit are connected with the main control unit, and the motor is connected with the main control unit, and the transmission is connected with a driving wheel axle and the motor of the automobile. The automobile brake system with the energy recovery function is simple in structure, and convenient to install and lay, is mainly used for recovery of an electromobile when the electromobile brakes, and improves traveling and use economical efficiency of a vehicle.

Description

technical field [0001] The invention relates to a braking system, in particular to an automobile braking system with energy recovery function. Background technique [0002] In the traditional regenerative braking system, the measure of charging the power battery is usually used to absorb the energy fed back by the vehicle during regenerative braking, although the hybrid electric vehicle based on the regenerative braking of the power battery has gained popularity in recent years. Rapid development, but battery technology still hinders the development of hybrid electric vehicle regenerative braking technology. Affected by the low specific power, the battery can only charge the small battery, and the frequent braking of hybrid electric vehicles requires the battery to absorb the energy generated by regenerative braking in a short period of time, that is, to charge the battery with a large current instantaneously, which causes The battery cannot meet the power requirements of t...

AI Technical Summary

Problems solved by technology

[0002] In the traditional regenerative braking system, the measure of charging the power battery is usually used to absorb the energy fed back by the vehicle during regenerative braking, although the hybrid electric vehicle based on the regenerative braking of the power battery has gained popularity in recent years. Rapid development, but battery technology still hinders the development of hybrid electric vehicle regenerative braking technology

Affected by the low specific power, the battery can only charge the small battery, and the frequent braking of hybrid electric vehicles requires the battery to absorb the energy generated by regenerative braking in a short period of time, that is, to charge the battery with a large current instantaneously, which causes The battery cannot meet the power requirements of the vehicle

If the battery is forced to be charged with high current for a long time, the number of batteries must be increased to meet the requirements of frequent braking or deceleration of the car, which will inevitably increase the complexity of battery management and increase the cost of the vehicle

Frequent braking, acceleration and deceleration of the car will increase the charging times of the battery, which will reduce the service life of the battery and affect its power performance

Under low temperature conditions, the battery cannot fully absorb the energy generated by regenerative braking, and cannot meet the requirements of the driving range of hybrid electric vehicles

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