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摘要变速器在电动汽车的传动系统中具有非常重要的地位，他主要通过改变由电动机传递到驱动轮上的转速和转矩来工作，从而使汽车在起步、上坡、拐弯、加速等各种不同的行驶情况下，得到不同的速率和牵引力，同时保证发动机在相对适宜的工作情况下工作。以前的机械式变速器固然有换挡时冲击较大、形体大、操纵不便等弊端，但是仍具有传动的效率高、制造的成本相对较低、生产以及制造的技术比较成熟等优点，因此广泛地运用在电动汽车上。
- 上一篇：基于UG的观光车车身概念设计
- 下一篇：旋转爆震发动机燃烧室掺混过程数值模拟
本文在设计前期了解了变速器的开发流程，理解了相关的基础设计知识，确定了这款电动汽车变速器的齿轮和轴的总布置形式，其次，根据电机的基本参数并且为了满足电动车动力性能以及经济性能变速器所必须达到的传动比，来完成变速器主要部件的设计，最后完成对变速器的主要零件的检验。20302
关键词 电动汽车 变速器 设计 检验
毕业论文设计说明书（论文）外文摘要
Title Transmission system design of electric vehicle
Abstract
Automobile transmission plays an important role in the transmission of electric vehicles, it works by changing the speed and torque which is transmitted from the motor to the driving wheels, so that the car could
get different rates and traction when the car is starting, climbing, turning and accelerating under different driving conditions, besides, it still ensure the engine to work at relatively suitable working conditions.
Of course the traditional mechanical transmission has many drawbacks such as large shift shock, huge body and manipulation inconvenience, it is still
Widely used in modern cars for its advantages of high transmission efficiency, mature production technique and more importantly low-cost.
This thesis firmly confirms the design plan of manual gearbox of micro car
, basing on the comprehension and study on gearbox development process as well as relevant theories. Secondly based on the essential parameter of furnished engine and the required transmission ratio of the vehicle’s power performance, finally complete the test of the main parts of the transmission.
Keywords electric vehicle transmission design test
目次
1 引言 1
1.1 汽车变速器概述 1
1.2 电动汽车变速系统简介 1
1.3 电动汽车变速系统的发展及关键技术 2
1.4 设计的内容及方法 2
2变速系统总方案设计 4
2.1传动简图 4
2.2拟定传动方案： 4
2.3电机的选择： 4
2.4主减速比的选择 6
2.5主减速器运动和动力参数计算 6
2.6本章小结： 7
3.设计计算传动零件 8
3.1高速齿轮组的强度校核 8
3.2低速级齿轮组的设计和强度校核 13
3.3校验传动比 17
3.4本章小结 17
4 设计计算轴 18
4.1低速轴的设计与计算 18
4.1.2轴的强度校核 19
4.2低速轴的设计与计算 21
4.3高速轴的设计与计算 24
4.4本章小结 26
5 CATIA三文建模 27
5.1 CATIA三文建模过程 27
结论 29
致谢 30