Central-driven ultra-large load smart self-adaptive electric drive system

Abstract

The invention discloses a centrally driven ultra-large load intelligent self-adaptive electric drive system, which comprises a motor, a high-speed gear transmission mechanism, a low-speed gear transmission mechanism and a central output mechanism. With the above scheme, the multi-row overrunning clutch doubles the load-bearing capacity compared with the traditional single-row overrunning clutch, and breaks through the load limit of the traditional overrunning clutch; it adopts a new transmission path and realizes the central output structure. Not only can high-speed motors be used, but the overall balance is good, the reliability is high, and it is suitable for more application scenarios; at the same time, the screw transmission pair is located further outside, which is easier to assemble; so that it can adapt itself without cutting off the driving force Automatic gear shifting with changes in driving resistance, keeping the motor on a high-efficiency platform as much as possible, greatly increasing the range of high-efficiency operation of the motor.

Description

Technical field [0001] The present invention relates to the technical field of electric drive system, and more particularly to a central driving type super load intelligent adaptive electrical drive system. Background technique [0002] With the increasing harsh, new energy vehicles represented by pure electric vehicles, motorcycles, tricycles, replaced traditional fuel vehicles, are already a general trend. [0003] At present, the electric drive system of automobiles, motorcycles and tricycles with pure electric power is composed of two independent parts of the motor and gearbox (gearbox or gear), not only high transmission efficiency, but also affects the arrangement of the mechanism. [0004] Moreover, the motor is generally installed in the mounting of hub motor or side hanging structure. The hub motor is directly driven by a low speed DC motor, not only relatively low in efficiency, but also because the motor is large, the weight is heavy, and the original balance of the wh...

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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