Multi-axle distributed driving pure electric vehicle seriation platform

Abstract

The invention discloses a multi-axle distributed driving pure electric vehicle seriation platform. The platform is a distributed multi-purpose pure electric vehicle seriation common platform composed of at least two double-motor driving axles and can be used for pure electric trucks, passenger cars and self-propelled trailers. The distributed driving chassis platform is composed of multiple double-motor driving axles. Transmission ratios of axles on the driving axles can be different, transmission switching control is conducted through a whole vehicle controller and a motor controller, optimizing control is conducted according to the requirements on resistance of various road surfaces and the driving speed, and the work efficiency of motors can be fully exerted. Multiple sets of motors, battery packs and controllers are dispersed and parallelly used, the safety of a power supply can be improved, and the system cost can be reduced.

Description

technical field [0001] The invention relates to the fields of motor drive technology, multi-shaft drive technology, multi-motor variable speed technology and new energy vehicles. Background technique [0002] With the development of new energy vehicles, the social demand for new pure electric vehicles such as pure electric buses, pure electric trucks and pure electric logistics vehicles is increasing. At present, the pure electric vehicles produced by most electric vehicle manufacturers are mostly driven by 4×2 models, with two drive wheels among the four wheels, driven by the rear axle or the front axle. [0003] Some use electric motors instead of engines to provide power, and the chassis is refitted from the traditional second-class chassis of automobiles. Some use a low-speed single-motor drive axle to drive the two rear wheels and drive the two front wheels. The biggest disadvantage of the low-speed single-motor drive axle is that the unsprung mass is too large, which ...

AI Technical Summary

Problems solved by technology

Some use a low-speed single-motor drive axle to drive the two rear wheels and drive the two front wheels. The biggest disadvantage of the low-speed single-motor drive axle is that the unsprung mass is too large, which reduces the ride comfort and handling stability.

Affected by the addition of drive motors, gearboxes and other assemblies, the curb weight of the chassis is larger, the load weight is smaller, the axle load distribution is unreasonable, and the braking performance, ride comfort and handling stability are worse

[0004] Moreover, due to the high-speed and low-torque characteristics of the electric motor itself, it also restricts the climbing performance when driving at high speed.

The chassis structure of the current pure electric vehicle restricts the load capacity and power of the vehicle, which greatly limits its use

Images