Range extended electric vehicle power system

Abstract

The invention discloses a range extended electric vehicle power system, which comprises a front axle, a rear axle, a front driving device, a rear driving device, a power coupling device, a controller, a storage battery group and the like, wherein the front driving device comprises a front driving motor, an internal combustion engine and a gearbox; the front driving motor is controlled by the controller; a front output shaft and a rear output shaft for outputting power to the front axle and the rear axle are arranged on the gearbox respectively; the front driving motor is a dynamo-electric all-in-one machine; and the internal combustion engine is connected with a power input end of the front driving motor through a clutch. The internal combustion engine can drive the front driving motor to generate power and directly participate in driving a vehicle, and a working point of the internal combustion engine is adjusted to be kept in a high-efficiency area through the front driving motor, so that the energy utilization rate of the internal combustion engine is improved, and the economical efficiency of the vehicle is improved. In addition, the four-wheel drive of the vehicle can be realized, the utilization rate of tire traction is improved, and due to the power coupling device, the rotating speed coupling or torque coupling of the front and rear power can be realized, and the power performance of the vehicle is improved.

Description

technical field [0001] The invention relates to a vehicle power system, in particular to an electric vehicle power system. Background technique [0002] With the increasingly severe environmental protection situation, the demand for research on new energy vehicles is increasing. Pure electric vehicles do not need fuel, but due to the technical bottleneck of the battery, the vehicle has problems such as high manufacturing cost, inconvenient charging, short mileage on a single charge, insufficient power, and high failure rate; other new energy vehicles, due to high technical costs or safety issues , is difficult to apply. Therefore, it is difficult for existing new energy vehicles to compete with traditional vehicles, and their scope of application is limited. [0003] In this context, extended-range electric vehicles, as a new type of energy-saving and environmentally friendly vehicles, can combine the advantages of pure electric vehicles and traditional vehicles. The vehi...

AI Technical Summary

Problems solved by technology

[0007] In view of this, the present invention provides an extended-range electric vehicle power system to solve the technical problems that the existing extended-range electric vehicles cannot fully utilize the power of the internal combustion engine and the drive motor, and the low traction and braking energy utilization of two-wheel drive tires.

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