Electric vehicle energy recovery device

Abstract

The invention discloses an electric vehicle energy recovering apparatus comprising an electric generator, a planetary gear deceleration mechanism and a transmission system. A rotor of the electric generator is cooperated with a sun gear of the planetary gear deceleration mechanism via a first overturning clutch, and cooperated with a planetary rack of the planetary gear deceleration mechanism viaa second overturning clutch; the first overturning clutch combines with the rotor when the rotor transits power to the planetary gear deceleration mechanism and overturns when the rotor receives powerfrom the planetary gear deceleration mechanism; the second overturning clutch overturns when the rotor transmits power to the planetary gear deceleration mechanism and combines with the rotor when the rotor receives power from the planetary gear deceleration mechanism; the transmission system has a transmission and a differential transmitting power of the planetary rack of the planetary gear deceleration mechanism to wheels. Electric vehicle driving torque demands can be met; meanwhile, when a vehicle requires energy during sliding or braking, the electric generator can generate power for electricity collection with high efficiency.

Description

technical field [0001] The invention relates to the field of energy recovery, in particular to an electric vehicle energy recovery device. Background technique [0002] Braking energy has been widely studied as the main energy dissipated in the process of automobile driving. With the advent of energy crisis, major automobile manufacturers have begun to study the energy recovery system of automobiles in brakes. In the prior art, the electric motor (integrated electric generator) with power generation and power supply is usually used as the power source to provide driving energy for the electric vehicle. When the vehicle is coasting or braking, the anti-drag force of the wheels will drive the integrated electric generator to generate electricity. , so as to collect the kinetic energy of the vehicle during sliding or braking. In addition, in the prior art, when the motor generator is used as a power source, it usually needs to be decelerated and increased torque through the re...

AI Technical Summary

Problems solved by technology

In addition, in the prior art, when the electric generator is used as a power source, it usually needs to be decelerated and increased torque through the reducer, and then output to the vehicle transmission system to meet the driving force requirements; when the vehicle is coasting or braking, the wheels The anti-dragging force of the motor is input to the motor-generator integrated machine for power generation after the speed-up of the above-mentioned reducer, which causes the rotor speed of the motor-generator integrated machine to be too high, which is not conducive to making the motor generator work in the high-efficiency speed range for power generation

Images