Hybrid power transmission system, control method and automobile

Abstract

The invention discloses a hybrid power transmission system, a control method and an automobile, belonging to the field of hybrid power. The system comprises: first spindle, second spindle, an engine sequentially connected to the first spindle, First clutch, a third gear driving gear, a second clutch, a first gear driving gear, a synchronizer, a second gear driving gear and a second electric motor,wherein the first electric motor, the third gear driving gear, the third clutch, the first gear driving gear and the second gear driving gear are sequentially connected with the second main shaft, and the ratio of the number of the first gear driving gear gears to the number of the first gear driving gear gears is a first gear speed ratio; the ratio of the number of gears of the second gear passive gear to the number of gears of the second gear driving gear is the ratio of the second gear speed; the ratio of the number of gears of the third gear passive gear to the number of gears of the third gear driving gear is the speed ratio of the third gear; the second gear passive gear is connected to the wheel. The synchronizer is combined with the driving gear of the first gear or the driving gear of the second gear, so that the automobile has different speed ratios in various modes and has good fuel economy.

Description

technical field [0001] The invention relates to the technical field of hybrid power, in particular to a hybrid power transmission system, a control method and an automobile. Background technique [0002] A hybrid vehicle refers to a vehicle in which the vehicle drive system is composed of two or more single drive systems that can work simultaneously. The hybrid drive system provides power for the hybrid vehicle individually or jointly through a single drive system. The hybrid power transmission system directly determines the power synthesis and decomposition performance, regenerative braking performance, work mode perfection, switching sensitivity and smoothness, control strategy, etc. of the hybrid electric vehicle, and has a significant impact on the power and fuel economy of the hybrid electric vehicle . [0003] The hybrid power transmission system provided by the related technology includes: engine, first motor, second motor, first clutch, second clutch, third clutch a...

AI Technical Summary

Problems solved by technology

[0005] The mechanical energy output by the engine, the first motor, and the second motor is transmitted to the wheels through the first clutch, the second clutch, and the third clutch respectively. Since the first clutch, the second clutch, and the third clutch are only responsible for Whether the mechanical energy of the first motor and the second motor is transmitted to the wheels, and when the car is running in the high-efficiency area, the clutch cannot coordinate the power output between the engine, the first motor and the second motor, the engine, the first motor and the second motor The coupled torque cannot be balanced, which will cause the car to fail to run in the high-efficiency area and not have good fuel economy

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