Dual-overrunning clutch self-adaptive automatic speed changing electric driving system output by planetary system

Abstract

The invention discloses a dual-overrunning clutch self-adaptive automatic speed changing electric driving system output by a planetary system. A planetary gear train is adopted to output power, a speed changing system includes a low-speed gear transmission mechanism, a gear reversing transmission mechanism and a self-adaptive speed changing assembly, wherein the gear reversing mechanism has a transmission ratio I transferring gear reversing power from an auxiliary shaft to a main shaft, the low-speed gear transmission mechanism has a transmission ratio II transferring low-speed gear power fromthe auxiliary shaft to the main shaft, and the transmission ratio I is greater than or equal to the transmission ratio II. According to the dual-overrunning clutch self-adaptive automatic speed changing electric driving system output by the planetary system, reasonable cooperation of two overrunning clutches are used, thus the overall structure is simple and compact, gear reversing transmission and low-speed gear and quick-gear transmission share one transmission route without interference, whole performance is ensured, adaptive capacity is high, matching with a self-adaptive automatic speedchanging mechanism is smooth and natural, planetary deceleration output is adopted, output torque can be improved, a high-speed motor can be adopted as a power source, the overall efficiency is improved, and dual-overrunning clutch self-adaptive automatic speed changing electric driving system output by the planetary system is suitable for the field of electric vehicles, and is suitable for the field of other variable torque mechanical transmission.

Description

technical field [0001] The invention relates to a motor vehicle transmission, in particular to a planetary system output dual overrunning clutch self-adaptive automatic variable speed electric drive system. Background technique [0002] The working conditions of mechanical transmission systems are generally complex, and torque needs to be distributed to realize the transmission of different loads and speeds. Taking electric vehicles as an example, the driving environment is complex and changeable. Moreover, the electric drive method commonly used in existing electric vehicles is a motor-driven fixed-speed ratio, and the reasonable range of high efficiency is narrow and limited, resulting in a vicious circle, resulting in the following problems: [0003] 1. It can only work within the torque range of a certain working condition. [0004] 2. In order to meet the road conditions under the condition of constant speed ratio, the speed of the motor can only be increased, which in...

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Problems solved by technology

[0014] In view of this, the purpose of the present invention is to provide a dual overrunning clutch adaptive automatic variable speed electric drive system output by a planetary system, adding a reverse gear mechanism with strong adaptability, and the device can not only adapt to changes in driving resistance without cutting off the driving force It can automatically shift gears and change gears under certain conditions, and can solve the problem of high-efficiency road forward and reverse driving under complex conditions under two-way driving conditions, and the setting is simple and compact, and it cooperates smoothly with the cam adaptive automatic transmission mechanism Naturally, reduce the manufacturing cost and ensure the stability of the transmission

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