Central driving type intelligent self-adaptive electric driving system

Abstract

The invention discloses a central driving type intelligent self-adaptive electric driving system which comprises a motor, a self-adaptive transmission assembly and a central output mechanism. According to the technical scheme, the structure is extremely compact and the integration degree is high; the internal space of the motor is fully utilized, part of components of the transmission mechanism can be installed in the motor; the transmission route is short and the transmission efficiency is high; and with a power mechanism, the influence on dynamic balance of wheels is reduced. Moreover, witha brand-new transmission path, a central output type structure is realized; a high-speed motor can be adopted, the overall balance is good, the reliability is high, and the system is suitable for moreapplication scenes. Therefore, under the condition that driving force is not cut off, gear shifting and speed changing are automatically carried out along with driving resistance changes in a self-adaptive mode, the motor is always located on an efficient platform as much as possible, so that the efficient operation interval of the motor is greatly increased.

Description

technical field [0001] The invention relates to the technical field of electric drive systems, in particular to a centrally driven intelligent self-adaptive electric drive system. Background technique [0002] With the increasingly stringent environmental protection regulations, it is the general trend that new energy vehicles represented by pure electric vehicles, motorcycles and tricycles will replace traditional fuel vehicles. [0003] At present, the electric drive systems of automobiles, motorcycles and tricycles powered by pure electricity are composed of two independent parts, the motor and the reduction box (gearbox or transmission box). Not only the transmission efficiency is not high enough, but also the layout of the mechanism is affected. [0004] The motor generally adopts the installation method of hub motor or side-mounted structure. The hub motor is directly driven by a low-speed DC motor, which not only has relatively low efficiency and high heat generation...

AI Technical Summary

Problems solved by technology

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.

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

[0005] Moreover, due to the limitations of its transmission structure, the existing electric vehicle is completely controlled by the driver based on experience when the driving resistance cannot be accurately known during the driving process. Therefore, it is often inevitable that the motor working state and traffic The actual driving conditions of the tool do not match, causing the motor to stall

Especially when the vehicle is under low-speed and heavy-load conditions such as starting, climbing, and headwind, the motor often needs to work at low efficiency, low speed, and high torque, which is likely to cause accidental damage to the motor and increase maintenance and replacement costs. directly affect the battery life

For models with high economic requirements such as electric logistics vehicles, the traditional variable speed transmission structure obviously cannot better meet their use requirements

[0006] Moreover, the traditional roller overrunning clutch has limited load capacity, and the only way to increase the load capacity is to increase the size of the outer ring, inner wheel and rolling body, but the inner wheel and rolling body cannot be infinitely extended, especially the thinnest If the roller is too long, not only is it prone to uneven force, it may cause breakage, and it is difficult to guarantee the machining accuracy, and it is prone to poor meshing, which makes production difficult and the yield rate is low. At the same time, the requirements for materials are extremely high. , high production costs

Therefore, the existing self-adaptive automatic transmission device cannot withstand super large loads, the manufacturing cost remains high, and the reliability is insufficient.

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