Novel power transmission mechanism of battery electric vehicle

Abstract

The invention relates to a novel power transmission mechanism of a battery electric vehicle. The novel power transmission mechanism comprises a gearbox shell, a gearbox, a driving motor, a clutch pressure plate, a flywheel and a clutch driven plate, wherein the gearbox is fixed to one end of the gearbox shell, the driving motor is fixed to the other end of the gearbox shell, the clutch pressure plate and the flywheel are arranged in the gearbox shell, and the clutch driven plate is arranged in the gearbox shell and is located between the clutch pressure plate and the flywheel. A bearing seat is installed in the flywheel, so that after a shaft of the gearbox is assembled in a bearing II in the bearing seat, the installation space is saved, and the problems of abnormal sound, unsmooth transmission and the like of the gearbox due to bounce of the shaft of the gearbox are solved. Additionally, a bearing I is designed on the outer side of a coupling and is matched with the gearbox shell, so that the bearing I is fixed, and the smoothness of an output shaft of the driving motor is guaranteed. The problems of abnormal sound, low transmission efficiency, non-thorough separation and the like of a clutch due to the bounce of the output shaft and the problem of low self-strength reliability of the output shaft due to large flywheel mass and large rotary inertia are solved.

Description

technical field [0001] The invention relates to a novel power transmission mechanism of a pure electric vehicle. Background technique [0002] At present, a large part of pure electric vehicles adopt the drive mode of drive motor + clutch + gearbox. Usually, one end of the drive motor is connected to the flywheel by a coupling. In order to increase the inertia, the flywheel usually has a large mass. For the output shaft of the motor It is said that the cantilever is too long, which causes the output shaft of the motor to jump easily, which leads to unstable power output, and the side of the gearbox also causes unstable power output due to the jump of one shaft. The defects in the following aspects are caused by the one-axis jump of the drive motor at the power output end and the gearbox at the power transmission end: [0003] 1. There are abnormal noises from the drive motor, flywheel, gearbox and clutch; [0004] 2. The power transmission line deviates, and the clutch sep...

AI Technical Summary

Problems solved by technology

[0003] 1. There are abnormal noises from the drive motor, flywheel, gearbox and clutch;

[0004] 2. The power transmission line deviates, and the clutch separation stroke is too large or too small;

[0005] 3. During high-speed operation or high-torque output, the gearbox gear meshes abnormally, causing "tooth hitting" or even deformation and damage to the gear shaft;

[0006] 4. The transmission efficiency is reduced, and the resistance of the vehicle is too large, resulting in a decline in the economic performance of the vehicle

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