Power driving device of electric vehicle and electric vehicle

Abstract

The invention discloses a power driving device of an electric vehicle and the electric vehicle and relates to the technical field of automobiles. The power driving device of the electric vehicle is invented for improving shifting comfort of the electric vehicle and sitting comfort. The power driving device of the electric vehicle comprises a motor, a first clutch, a second clutch, a speed reducer and a differential mechanism, the motor, the first clutch, the second clutch, the speed reducer and the differential mechanism are connected in sequence, the speed reducer is a planetary gear speed reducing mechanism formed by three elements of a sun wheel, a planet frame and a gear ring, a rotor of the motor is connected with a first driving disk of the first clutch and a second driving disk of the second clutch, a first driven disk of the first clutch is connected with a first element of the three elements, a second driven disk of the second clutch is connected with a second element of the three elements, the first element or the second element is connected with a gear ring of the differential mechanism, a third element of the three elements is fixed immovably, the differential mechanism is connected with a first semi-shaft and a second semi-shaft, and the first semi-shaft and the second semi-shaft can drive two wheels. The power driving device is mainly applied to the electric vehicle.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to an electric vehicle power drive device and an electric vehicle. Background technique [0002] At present, electric vehicles are in a period of rapid development, and many large automobile companies at home and abroad are developing their own electric vehicles. Among them, the driving device of a traditional electric vehicle generally includes a motor, a reducer, and a differential. The two ends of the differential protrude respectively from the left half shaft and the right half shaft connected to the wheels. During the working process, the motor outputs power. To the reducer, the reducer outputs the power to the differential, and the differential outputs the power to the left and right half shafts, which drive the wheels. [0003] Therefore, the driving device of the existing electric vehicle is basically equipped with a reducer with two gears, which can meet the large torq...

AI Technical Summary

Problems solved by technology

[0003] Therefore, the driving device of the existing electric vehicle is basically equipped with a reducer with two gears, which can meet the large torque required by the vehicle when starting and climbing on the one hand, and on the other hand can also realize the driving of the electric vehicle in different The power demand required under road conditions. In one solution of the prior art, the speed reducer with two gears allows the vehicle to achieve different power transmission by setting two pairs of gear sets with different transmission ratios. When the electric vehicle switches gears , the synchronizer in the reducer needs to be separated from one pair of gear sets first, and then combined with another pair of gear sets. There will be a relatively long power interruption during the shifting process, which may cause shifting Unsmooth and poor ride comfort

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