Hybrid electric drive system for multi-axle wheeled vehicles

Abstract

The invention belongs to the technical field of power transmission, and particularly relates to a vehicle hybrid power driving system. According to the technical scheme of the multi-axle multi-wheel vehicle hybrid electric driving system, in a mechanical drive section, an engine (1) and a gearbox (3) are longitudinally arranged, an elastic coupler (2) is arranged between the engine and the gearbox, a transfer case (4) is connected to the rear side of the gearbox (3), and the transfer case (4) conducts power distribution and distributes the power into axles through a drive axle; in a dynamic drive section, a wheel edge drive motor (8) and a double-gear gearbox (7) are combined to drive the axles, the wheel edge drive motor (8) is connected to a power management system (21), and the power management system (21) is connected with a battery pack (22) and the gearbox (3). According to the multi-axle multi-wheel vehicle hybrid electric driving system, an inter-axle differential mechanism and an inter-wheel differential mechanism are omitted, the structure of the driving system is simplified, a transmission chain is shortened, and power distribution is flexible.

Description

technical field [0001] The invention belongs to the technical field of power transmission, and in particular relates to a vehicle hybrid drive system. Background technique [0002] The multi-axle drive vehicle has reasonable axle load distribution, strong power and passability, and is widely used in heavy-duty wheeled vehicles and military wheeled vehicles. With the improvement of vehicle maneuverability and handling stability performance requirements, the need for flexible power distribution between axles and wheels is more urgent for multi-axle drive vehicles. The flexible distribution of power between the axles can make full use of the adhesion of the road surface and improve the acceleration ability; the power distribution between the wheels can realize the directional distribution of the torque between the wheels in addition to anti-skid and get out of trouble, improve the yaw acceleration of the vehicle, and improve the cornering process maneuverability. [0003] Mos...

AI Technical Summary

Problems solved by technology

Taking an 8×8 vehicle as an example, if the vehicle needs to achieve full motion coordination, it needs 4 inter-wheel differentials and 3 inter-axle differentials; it is assumed that all of them are realized with open differentials, such as a certain wheel in The loss of adhesion on special road surfaces will cause all wheels to lose power; although differentials with locking devices (including electronic differentials) or anti-skid differentials can be used to drive on difficult roads, their mechanical structure and control are complex

Differentials with torque distribution functions such as Torsen differentials can be used for power distribution between axles, but they can only achieve a limited range of power distribution, and cannot achieve flexible distribution between 0% and 100%.

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