Rear-drive series hybrid power driving system

Abstract

The invention discloses a rear-drive series hybrid power driving system, belonging to the technical field of hybrid power automobile driving system structures. The rear-drive series hybrid power driving system is mainly used for solving the problem of excessive oil consumption when a traditional hybrid power automobile runs at a high speed. According to the main structure of the system, a speed increaser comprises a speed increaser input gear, a speed increaser intermediate gear and a speed increaser output gear; the speed increaser input gear, the speed increaser intermediate gear and the speed increaser output gear are in meshed transmission connection; the axis of the speed increaser intermediate gear is further in intermittent transmission connection with the input end of a transmission shaft through a direct-drive shaft system; a motor controller is connected with a vehicle control unit; and the vehicle control unit is further connected with a battery and the direct-drive shaft system. According to the rear-drive series hybrid power driving system, by arranging the direct-drive shaft system, an engine can be directly connected with the transmission shaft when necessary so as to participate in driving of an automobile and lower oil consumption.

Description

technical field [0001] The invention relates to the technical field of drive system structure of a hybrid electric vehicle, in particular to a rear-drive serial hybrid drive system. Background technique [0002] At present, with the implementation of the domestic "double points" policy and the new "fuel consumption regulations", the average fuel consumption level of new passenger cars in my country will drop to 4.0L / 100km by 2025 (based on the NEDC cycle test). It is difficult for traditional fuel-powered vehicles to meet this requirement. Therefore, more fuel-efficient hybrid vehicles have become the best choice for every user. [0003] In the drive system of a traditional series hybrid electric vehicle, the power of the engine is output to the generator, and at the same time, the electricity generated by the generator is output to the battery or directly to the drive motor, and then the electricity is used to drive the vehicle. Since the engine does not directly drive th...

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Problems solved by technology

[0004] However, when the car is running at high speed, the traditional hybrid car driven solely by the battery and the drive motor consumes more power, and the engine needs to run continuously to charge the battery, which will lead to faster fuel consumption.

At the same time, because in the whole process of energy transfer, the power of the engine is converted into electrical energy by the generator to the generator inverter, and then to the drive motor inverter to finally drive the drive motor to drive the vehicle. After a series of energy conversions, part of the energy is lost instead. , which further leads to the fuel consumption of hybrid vehicles at high speeds is even higher than that of pure fuel vehicles

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