Vehicle and hybrid power system

Abstract

The embodiment of the invention provides a vehicle and a hybrid power system, and the hybrid power system comprises a planetary gear set which comprises a gear ring, a planet carrier and a sun gear; an engine which comprises an engine output shaft, and the engine output shaft is in anti-torque connection with any one of the gear ring, the planet carrier and the sun gear; a first motor which comprises a first motor output shaft, and the first motor output shaft is in anti-torque connection with the other one of the gear ring, the planet carrier and the sun gear; a differential mechanism which comprises a differential mechanism input shaft, and the differential mechanism input shaft is in anti-torque connection with the other one of the gear ring, the planet carrier and the sun gear; and a synchronizing device which is arranged between the engine output shaft and the motor output shaft and can selectively establish or disconnect anti-torque connection between the engine output shaft andthe first motor output shaft. The embodiment of the invention can improve the energy utilization rate of the hybrid power system.

Description

Technical field[0001]The embodiment of the present invention relates to the field of hybrid power technology, in particular to a vehicle and a hybrid power system.Background technique[0002]At present, the most mainstream hybrid systems for passenger cars in the world mainly include three hybrid structures: single-motor parallel, dual-motor series-parallel (hybrid), and power split.[0003]Taking the power split hybrid power system as an example, at low speeds, the planetary gear set divides the mechanical power generated by the internal combustion engine into two power flow paths. Part of the power is transmitted to the drive wheels, and the rest is directed to the motor and converted into electricity, so that the engine can still run in its best efficiency zone when the vehicle speed is low. Since the power split hybrid structure can adjust the engine speed and torque through the decoupling of the two motors, so that it always works in the best fuel consumption area, it undoubtedly h...

AI Technical Summary

Problems solved by technology

[0004] However, at high speeds, the internal combustion engine still needs to generate more energy than is actually required by the vehicle speed, and the remaining energy must drive the motor to generate electricity, and then drive the vehicle through another motor. After multiple energy conversions, there will be energy loss. Compared with the direct drive of the engine, the hybrid efficiency is not good

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