4×4 vehicle wheel side motor power coupling transmission system

Abstract

The invention belongs to the technical field of power transmission, and in particular relates to a power coupling transmission system. 4×4 vehicle wheel side motor power coupling transmission system, its technical solution is: engine (1), generator (2), motor and generator controller (3) and power battery pack (4) form the front transmission chain part; The wheel side motors and their reduction gears (11, 12, 13, 14) respectively drive the wheels (21, 22, 23, 24), and the front axle differential (32) couples the front axle two wheel side motors and their speed reduction devices ( 11,12) of power, the power of rear axle differential (33) coupling rear axle two wheel side motors and reduction gear (13,14); front axle differential (32) and rear axle differential ( 33) It is connected with the electric torque distribution device (31) through the transmission shaft; the present invention can reduce the electrical power of the wheel motor, and improve the power utilization rate of the motor under off-road conditions to obtain higher off-road maneuverability.

Description

technical field [0001] The invention belongs to the technical field of power transmission, and in particular relates to a power coupling transmission system. Background technique [0002] 4×4 vehicles usually use components such as transfer case, Torsen differential and limited slip differential to realize power distribution to improve off-road performance and acceleration performance. [0003] With the development of new energy vehicle technology, the distributed drive in the form of in-wheel motors is a current research hotspot. In-wheel motor drive can realize flexible and controllable power distribution between wheels and axles, and realize 4×4 vehicle transmission system and transfer. System functional integration. Each wheel of a small passenger car is driven by an in-wheel motor, and four in-wheel motors share the power demand of the vehicle, which can reduce the power of each in-wheel motor, achieve a small volume and weight, and obtain a reasonable unsprung mass. ...

AI Technical Summary

Problems solved by technology

However, for off-road vehicles or heavy-duty 4×4 vehicles, the power demand of the hub motor is relatively large, and the existing technical level of the hub motor makes it difficult to control the unsprung quality; therefore, such vehicles usually adopt the scheme driven by the wheel motor

[0004] For 4×4 vehicles driven by wheel motors, in some off-road road conditions, some wheels will lose their adhesion performance in the air. At this time, the load of other wheel motors needs to be increased to obtain sufficient traction, which requires the motor to have good traction. Peak performance; wheel motors that lose adhesion also have the disadvantage of idle power, compared with mechanical four-wheel drive systems, it is difficult to exert full driving force

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