Central drive type electric drive system assembly

Abstract

The invention discloses a central drive type electric drive system assembly. The central drive type electric drive system assembly comprises a rotary output part and a transmission shaft arranged on the rotary output part in a penetrating mode. A power system and a speed change system are installed on the transmission shaft, the power system and the speed change system are located on the two sidesof the rotation output component respectively, the power system transmits power to the speed change system through the transmission shaft, and then the speed change system drives the rotation outputcomponent to rotate to output the power. By the adoption of the technical scheme, a newly designed central driving type structure is adopted; the central drive type electric drive system assembly hasthe advantages of a hub motor and a side-hung structure, makes up the defects of the hub motor and the side-hung structure, is particularly suitable for a two-wheeled vehicle, can well guarantee the balance of a rotating output part, and has extremely high mechanical efficiency, small heat productivity, better heat dissipation capacity and lighter weight.

Description

technical field [0001] The invention relates to the technical field of electric drive systems, in particular to a centrally driven electric drive system assembly. Background technique [0002] With the increasingly stringent environmental protection regulations, it is a general trend that new energy vehicles represented by pure electric vehicles, two-wheelers, and tricycles will replace traditional fuel vehicles. Existing two-wheeled electric vehicles generally adopt hub motors and motor side-mounted structures. [0003] The hub motor is directly driven by a low-speed DC motor, which not only has relatively low efficiency and high heat generation, but also breaks the original balance of the wheel structure due to the large size and heavy weight of the motor, which will have a certain impact on handling performance and safety. [0004] The side-mounted structure puts the motor and the transmission system (gearbox or reducer) on the same side of the driving wheel. Although a ...

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Problems solved by technology

[0003] The hub motor is directly driven by a low-speed DC motor, which not only has relatively low efficiency and high heat generation, but also breaks the original balance of the wheel structure due to the large size and heavy weight of the motor, which will have a certain impact on handling performance and safety.

[0004] The side-mounted structure puts the motor and the transmission system (gearbox or reducer) on the same side of the driving wheel. Although a high-speed motor can be used to improve mechanical efficiency, the weight of the transmission mechanism and the motor is heavy, resulting in unbalanced wheels. Good, especially for two-wheelers

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