Pure electric vehicle power assembly system

Abstract

The invention relates to a pure electric vehicle power assembly system which solves the problems that in the prior art, one motor can not simultaneously meet the requirements on the vehicle accelerating performance and the maximum vehicle speed, and the increase of the power of the motor only depends on the increase of the volume of the motor, thereby increasing the quality and the performance parameters of the whole vehicle and increasing the manufacturing cost. The assembly system is arranged on a vehicle, is connected with a driving axle and mainly comprises two motors and power batteries, wherein the two motors comprise a high-speed motor and a low-speed motor; the high-speed motor is connected with the low-speed motor through a spline shaft; the high-speed motor and the low-speed motor are arranged coaxially; the low-speed motor is close to one end of the driving axle and is connected with the driving axle; the power output of the high-speed motor is transmitted to the driving axle through the low-speed motor; and the high-speed motor and the low-speed motor are respectively connected with motor controllers. By combining the high-speed motor and the low-speed motor, the applications in different working conditions, such as starting, low-speed operation, medium-speed operation, high-speed operation, climbing operation, braking operation and the like are realized. The combination of the two motors enables the motors to be always in the high-efficiency area, thereby improving the utilization ratio of the power energy and prolonging the continuously-driving distance.

Description

technical field [0001] The invention relates to an automobile driving system, in particular to a pure electric automobile power assembly system. Background technique [0002] With the continuous development of society, energy has become the focus of attention today. A variety of energy-consuming devices are looking for more alternative energy sources. As a non-polluting energy source, electric energy has been widely used. [0003] The energy used by automobiles is non-renewable energy, and the service life depends on the total amount of storage. The amount of these non-renewable energy sources is always limited. Therefore, more new energy sources are applied to automobiles, and the structure of automobiles has also undergone major changes. There are also changes in the structure of hybrid powertrains and pure electric powertrains. At present, the pure electric power drive system is mainly composed of a single motor, power battery and other auxiliary components. Therefore, ...

AI Technical Summary

Problems solved by technology

[0005] The invention solves the shortcoming that a single motor in the prior art cannot meet the requirements of vehicle acceleration performance and maximum vehicle speed at t

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