Hybrid powertrain, control method, and vehicle

Abstract

The invention discloses a hybrid power transmission system, a control method and an automobile, belonging to the field of hybrid power. The system includes: the first main shaft, the second main shaft, the engine connected to the first main shaft in sequence, the first clutch, the third-speed driving gear, the second clutch, the first-speed driving gear, the synchronizer, the second-speed driving gear and the second The motor, the first motor, the third gear driven gear, the third clutch, the first gear driven gear and the second gear driven gear connected to the second main shaft in sequence, the ratio of the gear number of the first gear driven gear to the number of the first gear driven gear is one Gear ratio; the ratio of the number of gears in the second gear to the number of driving gears in the second gear is the ratio of the second gear; the ratio of the number of gears in the third gear to the number of gears in the third gear is the ratio of the third gear; the ratio of the number of gears in the second gear to the driving gear is the ratio of the third gear; Connect with the wheel. Through the combination of the synchronizer and the first-speed driving gear or the second-speed driving gear, the car 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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