An electric vehicle and its power drive system

Abstract

The invention provides a power drive system of an electric car. The power drive system comprises a motor assembly, a front axle assembly, a rear axle assembly, a control device, and an energy storage device. The motor assembly comprises a double-rotor motor which comprises an inner rotor and an outer rotor. One of an output shaft of the inner rotor and an output shaft of the outer rotor is connected with the front axle assembly to supply power to the same. The other one of the output shaft of the inner rotor and the output shaft of the outer rotor is connected with the rear axle assembly to supply power to the same. The control device is connected with both the double-rotor motor and the energy storage device. The invention further provides an electric car with the power drive system. The four drive function can be imparted to the electric car and the power drive system thereof by one motor set. The electric car and the power drive system thereof are simple in structure, light in weight, small in size and flexible to distribute, and precious space of the electric car can be saved.

Description

technical field [0001] The invention relates to the technical field of new energy vehicles, and in particular to an electric vehicle and its power drive system. Background technique [0002] Vehicles have been around for more than 100 years since they were invented. Over the past 100+ years, vehicle technology has advanced by leaps and bounds. There are more and more types of vehicles, and their functions are more and more high-tech and humanized, thus providing people with a convenient and comfortable driving journey. [0003] As people's awareness of energy and environmental protection increases, electric vehicles have gradually become a research hotspot in the automotive industry. An electric vehicle refers to a vehicle powered by a vehicle-mounted power supply, driven by a motor to drive the wheels, and conforming to the requirements of road traffic and safety regulations. Due to its smaller impact on the environment than traditional cars, its prospects are widely opt...

AI Technical Summary

Problems solved by technology

As we all know, in order to improve the limited mileage of electric vehicles, the number of components and weight should be reduced as much as possible, and the addition of multiple sets of motors will undoubtedly increase the weight of the vehicle, which makes it more difficult to improve the mileage of electric vehicles

Moreover, the traditional wheel motor has a complex structure, which is not conducive to the layout of the suspension mechanism, while the hub motor will greatly increase the unsprung weight of the car, resulting in a decrease in the ride comfort of the electric car

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