The invention discloses a two-gear high-speed electric driving system for an automobile. According to the system, two-gear driving is achieved through combined transmission of a parallel shaft gear transmission mechanism and a planetary gear transmission mechanism, and an output shaft and an input shaft of a high-speed driving motor are an integrated connecting shaft; compared with spline connection, the integrated connecting shaft can reduce vibration noise of the system under high-speed rotation, meanwhile, parallel shaft gear transmission is adopted for first-stage speed reduction, parallel shaft gears can adopt high-overlap-ratio design, and compared with direct planetary gear speed reduction, the parallel shaft gear transmission-based first-stage speed reduction is large in overlap ratio and good in noise effect; due to the characteristics of high power density and small size of the planetary gear mechanism, under the requirement of the same speed ratio, compared with a single parallel-shaft two-gear electric drive system, the system of the invention has the advantages of high power density, small size and light weight.
本发明提供了一种用于汽车的两挡高速电驱系统,由平行轴齿轮传动机构与行星齿轮传动机构组合传动实现两挡驱动,高速驱动电机的输出轴与输入轴呈一体式连接轴,一体式连接轴相比于通过花键连接可减小系统高速转动下的振动噪音,同时第一级减速采用平行轴齿轮传动,平行轴齿轮可采用高重合度设计,相比于直接采用行星齿轮减速,重合度大、噪音效果良好,由于行星齿轮机构功率密度高、体积小的特点,在同等速比需求下,本发明的电驱系统相比单一的平行轴两挡电驱系统具有功率密度高、体积小质量轻的优点。
Two-gear high-speed electric driving system for automobile
一种用于汽车的两挡高速电驱系统
2021-07-09
Patent
Electronic Resource
Chinese
IPC: | B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES |
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|Engineering Index Backfile | 1941
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