A single planetary row hybrid powertrain system and a vehicle using the hybrid powertrain system

Abstract

The invention provides a single planetary row hybrid power system and a vehicle using the hybrid power system to increase motor output torque. A single planetary row hybrid powertrain includes a planetary row, the planetary row has three power inputs and one power output, A hybrid powertrain also includes an engine connected to corresponding transmissions of the three power inputs, At least one ofthat first motor and the second motor and a corresponding pow input terminal of the planetary row are provided with a transmission. The first motor and the second motor, the engine output shaft, thefirst motor output shaft and the second electronic output shaft are arrange in a non-axial manner. The transmission can play the role of decelerating and increasing torque. After the electronic rotorpasses through the transmission, the speed decreases and the torque increases, so that the torque output by the planetary exhaust power output terminal also increases, so as to ensure that the whole vehicle can be driven.

Description

technical field [0001] The invention relates to a single planetary row hybrid power system and a vehicle using the hybrid power system. Background technique [0002] Parallel hybrid systems have huge performance advantages over series hybrid systems and parallel hybrid systems. The current hybrid power system mainly uses a planetary mechanism as a power splitting device, which combines the advantages of a series-parallel hybrid power system and can realize infinitely variable speed. [0003] An invention patent with an application publication date of November 16, 2016 and an application publication number of CN106114185A discloses a hybrid power coupling transmission. The transmission (power system) includes a planetary row, and the planetary row has three power input ends. and a power output end, the three power input ends are respectively the input end of the sun gear, the input end of the ring gear and the input end of the planet carrier, and the power output end is conn...

AI Technical Summary

Problems solved by technology

[0004] However, in the above-mentioned power system, when the drive motor works to provide power for the power system, since the drive motor is directly connected to the output shaft of the planetary row through the gear, the torque value input by the drive motor to the planetary row is a certain value. In order to improve the output of the planetary row end torque, it needs to be equipped with a drive motor with a larger output torque, which increases the cost of the drive motor

Moreover, the ratio of the rotational speed between the driving motor and the output shaft of the planetary row is a fixed value, and the ratio of the torque is also a fixed value, and the driving motor cannot adapt to the

When the power system is in the engine drive mode, the engine will drive one of the power input ends of the planetary row to rotate. Since the drive motor is directly connected to the output shaft of the planetary row through gears, the output shaft of the planetary row will drive the drive motor to rotate with it, and there is an electromechanical conversion , reducing the energy utilization rate of the power system

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