Motor device and electric vehicle provided with same

Abstract

The invention relates to a motor device used for an electric vehicle. The motor device comprises a driving device, a transmission device and a synchronization device; the driving device is used for providing power for the electric vehicle; and the transmission device comprises a sun gear, a planet gear assembly, a first gear ring and a second gear ring, the planet gear assembly comprises a first planet carrier cover plate, a second planet carrier cover plate, at least two planet gear shafts fixedly connected with the first planet carrier cover plate and the second planet carrier cover plate aswell as at least two planet gears rotatably sheathed on the at least two planet gear shafts and uniformly distributed at the periphery of the sun gear, wherein each of the at least two planet gears comprises a large planet gear and a small planet gear which can coaxially rotate and are fixedly connected together, and each large planet gear is meshed with the sun gear; the first gear ring is provided with internal teeth and is meshed with the large planet gears of the at least two planet gears; and the second gear ring is provided with internal teeth and is meshed with the small planet gears of the at least two planet gears.

Description

technical field [0001] The present application relates to the field of electric vehicles, in particular, to a motor device of an electric vehicle. Background technique [0002] Nowadays, due to the consideration of many factors such as environmental protection and fuel consumption cost, electric vehicles have become more and more choices of people. However, in mountainous areas, the number of electric vehicles is still smaller than that of motorcycles, because electric vehicles still have many limitations in terms of speed, strength and battery life. For example, traditional hub motors belong to the category of low-speed motors, and due to limitations in technical principles, there are obstacles to increasing the speed. The mid-mounted motor generally adopts a high-speed motor, but the disadvantage of most direct-drive mid-mounted motors on the market is that it is large in size. Although the speed has increased compared with the direct-drive motor, it is difficult to climb...

AI Technical Summary

Problems solved by technology

However, in mountainous areas, the number of electric vehicles is still smaller than that of motorcycles, because electric vehicles still have many limitations in terms of speed, power and battery life.

For example, traditional hub motors belong to the category of low-speed motors, and there are obstacles to increasing the speed due to limitations in technical principles

The mid-mounted motor generally adopts a high-speed motor, but the disadvantage of most direct-drive mid-mounted motors on the market is that it is bulky. Although the speed of the mid-mounted motor has increased compared with the direct-drive motor, it is difficult to climb a slope, and it is easy to burn out when encountering a large slope.

Although the size of the toothed mid-mounted motor has been reduced and the motor torque has been increased, it still struggles when climbing a slope, and the motor consumes a lot of power, which affects the cruising ability of the vehicle

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