Hybrid power driving device for vehicle and control method thereof

摘要

This invention proposes a hybrid power driving device including an electric motor, an Internal Combustion engine, an automated mechanical transmission, a clutch, a main reducer and a differential, where the automated mechanical transmission includes first to sixth gear wheels forming meshing pairs, 2 synchronizers, an input transmission shaft connected with the engine, an input transmission shaft connected with the motor, and an output transmission shaft. This device provides for the motor with two gears, and provides for the engine with four gears, which can meet the practical demands of the engine and the motor. Compared with the existing parallel hybrid power coupling mechanism, the inventive device has a simple structure, a low cost, good shifting comfortability, and a high operation efficiency.

主权项

1. A hybrid power driving device for a vehicle, comprising an engine (13), an electric motor (7), an automated mechanical transmission, a clutch (17), a main reducer and a differential (19), wherein,
the automated mechanical transmission comprises a first gear wheel (3), a second gear wheel (6), a third gear wheel (8), a fourth gear wheel (11), a fifth gear wheel (14), a sixth gear wheel (16), a first synchronizer (4), a second synchronizer (10), a first input transmission shaft (9) connected with the engine (13), a second input transmission shaft (15) connected with the motor (7), and an output transmission shaft (18), wherein the first and second gear wheels (3, 6) form a pair of meshing gear wheels, the second and third gear wheels (6, 8) form a pair of meshing gear wheels, the fourth and fifth gear wheels (11, 14) form a pair of meshing gear wheels, and the fifth and sixth gear wheels (14, 16) form a pair of meshing gear wheels, both the second and fifth gear wheels (6, 14) are centrally passed through by and fixed to the second input transmission shaft (15), both the third and fourth gear wheels (8, 11) are centrally passed through by and slidable longitudinally on the first input transmission shaft (9), and both the first and sixth gear wheels (3, 16) are centrally passed through by and slidable longitudinally on the output transmission shaft (18); the third and fourth gear wheels (8, 11) are rotatable freely relative to the first input transmission shaft (9), and the first and sixth gear wheels (3, 16) are rotatable freely relative to the output transmission shaft (18); a flywheel of the engine (13) is connected with the first input transmission shaft (9) by a torsion damper (12), and an output shaft of the electric motor (7) is connected with the second input transmission shaft (15); the main reducer is formed by a driving gear wheel (5) and a driven gear wheel (1), and is connected with the differential (19); the first synchronizer (4) is configured to control the output transmission shaft (18) and the first gear wheel (3) to be engaged with or separated from each other, the second synchronizer (10) is configured to control the first input transmission shaft (9) and the third or fourth gear wheel (8, 11) to be engaged with or separated from each other, and the clutch (17) is configured to control the sixth gear wheel (16) and the output transmission shaft (18) to be engaged with or separated from each other.