A four-wheel drive system of an incremental electric vehicle and a control method thereof

Abstract

A 4-wheel drive system of an incremental electric vehicle and a control method thereof are disclosed, the system is equipped with a range extender system, External clutch and rear motor controller, the range extender system is connected to the front speed reducer through an external clutch, A rear motor controller is sequentially connected with a rear drive motor and a rear reducer, A range extender system includes a generator, generator controller, engine, engine controller, Internal clutch and lift controller, wherein the generator is connected with the front reducer through an external clutch, the engine and the generator are connected through an internal clutch, At that same time, the range increase controller is connected with the engine controller and the generator controller respectively, The rear motor controller is connected with the whole vehicle controller, and the power battery is connected with the generator controller and the rear motor controller respectively. The four-wheel drive system of the incremental electric vehicle improves the power performance and energy utilization rate of the electric vehicle, and also increases the driving range.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to a four-wheel drive system of an extended-range electric vehicle and a control method thereof. Background technique [0002] Pure electric vehicles drive the wheels by providing the electric energy stored in the power battery to the drive motor, which has the advantages of superior power performance, zero emissions, and no pollution, and has been developed on a large scale. However, due to problems such as the power battery is easy to age and the capacity of the power battery is easy to decay at low temperatures, the cruising range of pure electric vehicles is significantly limited. Therefore, electric vehicles with auxiliary power units (ie, extended-range electric vehicles) have emerged as the times require. It not only has the advantages of simple structure and strong power of pure electric vehicles, but also makes up for the shortcomings of insufficient driving range...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a range-extended four-wheel drive system for electric vehicles aimed at the defects of poor power performance of electric vehicles, greatly reduced mileage when the acceleration mode is started, and incomplete system control strategies in the prior art. The system layout structure connects the range extender system with a specific structure to the front reducer and the rear motor controller that controls the rear drive motor, effectively using the range extender system to provide the necessary power output for the vehicle, and using the The vehicle controller can reasonably control the range extender system and other systems to quickly and efficiently switch the working mode. The structure is simple, the configuration is innovative, and the control is convenient, which greatly improves the power performance and energy utilization rate of the electric vehicle, and increases the continuous mileage

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