A hybrid electric drive train for a motor vehicle comprises an engine with a drive shaft, an electric motor operable of motoring and generating, a differential transmission, and a multi-stage transmission with two input shafts and at least one output shaft. The differential transmission includes a planetary gear set, a clutch and a brake. The planetary gearset has a first element connected to the motor and the second input shaft of the transmission, a second element connected to the engine shaft, and a third element connected to the first input shaft of the transmission. The clutch is located between any two elements of the planetary gear set, and the brake is connected to the engine shaft. The transmission has a plurality of gearsets, and the driving gears of odd-numbered gearsets are mounted on the first input shaft while the driving gears of even-numbered gearsets are mounted on the second input shaft. The engine shaft can achieve every gear ratio of the gearsets. In addition, the engine shaft can also achieve a plurality of derivative speed ratios.

A one-way power conversion device (24) and a power system having the one-way power conversion device are provided. The one-way power conversion device (24) includes a one-way gearbox (18), a first transmission shaft (15), a second transmission shaft (16), and a swing rotation component (19). The device includes a combination of one or more one-way power conversion devices (24), which can absorb swinging powers coming from different directions and convert the swinging powers into an available one-way rotation power. The device can absorb the swinging power in any direction, and has the advantages of a high absorption and conversion efficiency, a stable power output, low costs of construction and maintenance, a high stability, and a wide application range.

A one-way power conversion device (24) and a power system having the one-way power conversion device are provided. The one-way power conversion device (24) includes a one-way gearbox (18), a first transmission shaft (15), a second transmission shaft (16), and a swing rotation component (19). The device includes a combination of one or more one-way power conversion devices (24), which can absorb swinging powers coming from different directions and convert the swinging powers into an available one-way rotation power. The device can absorb the swinging power in any direction, and has the advantages of a high absorption and conversion efficiency, a stable power output, low costs of construction and maintenance, a high stability, and a wide application range.

A hybrid drive system includes a transmission having first and second parallel input shafts. The first and second parallel input shafts are selectively coupled together via a plurality of gearwheels operable to vary the rotational speed of the second parallel shaft relative to the first parallel shaft. The hybrid drive system includes at least one irreversible drive machine coupled to the transmission and operable to provide torque to at least one of the first or second parallel input shafts, and at least one reversible drive machine coupled to the transmission and operable to provide torque to at least one of the first or second parallel input shafts.

A hybrid drive system includes a transmission having first and second parallel input shafts. The first and second parallel input shafts are selectively coupled together via a plurality of gearwheels operable to vary the rotational speed of the second parallel shaft relative to the first parallel shaft. The hybrid drive system includes at least one irreversible drive machine coupled to the transmission and operable to provide torque to at least one of the first or second parallel input shafts, and at least one reversible drive machine coupled to the transmission and operable to provide torque to at least one of the first or second parallel input shafts.

A hybrid electric drive train for a motor vehicle comprises an engine with a drive shaft, an electric motor operable of motoring and generating, a differential transmission, and a multi-stage transmission with two input shafts and at least one output shaft. The differential transmission includes a planetary gear set, a clutch and a brake. The planetary gearset has a first element connected to the motor and the second input shaft of the transmission, a second element connected to the engine shaft, and a third element connected to the first input shaft of the transmission. The clutch is located between any two elements of the planetary gear set, and the brake is connected to the engine shaft. The transmission has a plurality of gearsets, and the driving gears of odd-numbered gearsets are mounted on the first input shaft while the driving gears of even-numbered gearsets are mounted on the second input shaft. The engine shaft can achieve every gear ratio of the gearsets. In addition, the engine shaft can also achieve a plurality of derivative speed ratios.

A hybrid electric drive train for a motor vehicle comprises an engine with a drive shaft, an electric motor operable of motoring and generating, a differential transmission, and a multi-stage transmission with two input shafts and at least one output shaft. The differential transmission includes a planetary gear set, a clutch and a brake. The planetary gearset has a first element connected to the motor and the second input shaft of the transmission, a second element connected to the engine shaft, and a third element connected to the first input shaft of the transmission. The clutch is located between any two elements of the planetary gear set, and the brake is connected to the engine shaft. The transmission has a plurality of gearsets, and the driving gears of odd-numbered gearsets are mounted on the first input shaft while the driving gears of even-numbered gearsets are mounted on the second input shaft. The engine shaft can achieve every gear ratio of the gearsets. In addition, the engine shaft can also achieve a plurality of derivative speed ratios.

A two-speed electric drive assembly for vehicles includes a main driveshaft driven by a first axial flux motor where the main driveshaft extends coaxially through a hollow assist driveshaft driven by a second axial flux motor. The main driveshaft includes a main gear that is continuously meshed with an intermediate gear on an intermediate driveshaft. A freewheel gear is mounted around the hollow assist driveshaft and can be selectively coupled and decoupled with the hollow assist driveshaft by a shift mechanism. The freewheel gear is continuously meshed with an intermediate gear on the intermediate driveshaft. Another intermediate gear affixed to the intermediate driveshaft is continuously meshed with an output gear affixed to an output driveshaft. The two-speed electric drive assembly can selectively switch between speed mode and torque mode without torque interrupt.

A transmission assembly for a vehicle includes a first input shaft, a second input shaft and a common output shaft, a first input shaft first gear wheel and a first input shaft second gear wheel arranged axially offset with respect to each other on the first input shaft, a second input shaft first gear wheel and a second input shaft second gear wheel arranged axially offset with respect to each other on the second input shaft, an output shaft first gear wheel and an output shaft second gear wheel arranged axially offset with respect to each other on the common output shaft, wherein each one of the first input shaft first gear wheel and the second input shaft first gear wheel is meshing with the output shaft first gear wheel.

A transmission assembly for a vehicle includes a first input shaft, a second input shaft and a common output shaft, a first input shaft first gear wheel and a first input shaft second gear wheel arranged axially offset with respect to each other on the first input shaft, a second input shaft first gear wheel and a second input shaft second gear wheel arranged axially offset with respect to each other on the second input shaft, an output shaft first gear wheel and an output shaft second gear wheel arranged axially offset with respect to each other on the common output shaft, wherein each one of the first input shaft first gear wheel and the second input shaft first gear wheel is meshing with the output shaft first gear wheel.