A hybrid propulsion system includes a heat engine configured to drive a heat engine shaft. An electric motor is configured to drive an electric motor shaft. A transmission system includes at least one gearbox. The transmission system is configured to receive rotational input power from each of the heat engine shaft and the electric motor shaft and to convert the rotation input power to output power.

A hybrid propulsion system includes a heat engine configured to drive a heat engine shaft. An electric motor is configured to drive an electric motor shaft. A transmission system includes at least one gearbox. The transmission system is configured to receive rotational input power from each of the heat engine shaft and the electric motor shaft and to convert the rotation input power to output power.

A power transmission device for a hybrid vehicle may include: a cover part mounted on a vehicle body; two motor parts embedded in the cover part; two rotor parts mounted in the respective motor parts and rotated; a transfer part selectively connected to the rotor part; a torsion damper part coupled to the transfer part; a clutch part configured to selectively connect any one of the rotor parts to the transfer part; and an output part connected to the clutch part and configured to discharge power to a transmission, wherein any one of the rotor parts is connected to the torsion damper part.

A power transmission device for a hybrid vehicle may include: a cover part mounted on a vehicle body; two motor parts embedded in the cover part; two rotor parts mounted in the respective motor parts and rotated; a transfer part selectively connected to the rotor part; a torsion damper part coupled to the transfer part; a clutch part configured to selectively connect any one of the rotor parts to the transfer part; and an output part connected to the clutch part and configured to discharge power to a transmission, wherein any one of the rotor parts is connected to the torsion damper part.

The invention relates to a transmission arrangement (10) for a hybrid vehicle, comprising a housing (11), a transmission input shaft (12) and at least one transmission output shaft (13), a first planetary transmission set (PG1) having a first sun gear (zs1), a first ring gear (zr1) and a first planet carrier (c1) for a first planetary gear set (zp1) meshing with the first sun gear (zs1) and the first ring gear (zr1), also comprising a second planetary transmission set (PG2) having a second sun gear (zs2), a second ring gear (zr2) and a second planet carrier (c2) for second planetary gear set (zp2) meshing with the second sun gear (zs2) and the second ring gear (zr2), wherein the transmission input shaft (12) is rotationally fixed to the first planet carrier (c1), and the first ring gear (zr1) and the second ring gear (zr2) are permanently connected to one another and are rotationally fixed to the transmission output shaft (13), further comprising a first electric machine (E1) and a second electric machine (E2), wherein the first electric machine (E1) is in permanent driving engagement with first sun gear (zs1) and the second electric machine (E2) is in driving engagement with the second sun gear (zs2) in at least one operating mode, and wherein the first sun gear (zs1) can be connected to the housing (11) via a first switching element (S1). According to the invention, the second planet carrier (c2) is fixedly connected to the housing (11) and the second electric machine (E2) is drivingly engaged or can be drivingly engaged to the second sun gear (zs2).

The invention relates to a transmission arrangement (10) for a hybrid vehicle, comprising a housing (11), a transmission input shaft (12) and at least one transmission output shaft (13), a first planetary transmission set (PG1) having a first sun gear (zs1), a first ring gear (zr1) and a first planet carrier (c1) for a first planetary gear set (zp1) meshing with the first sun gear (zs1) and the first ring gear (zr1), also comprising a second planetary transmission set (PG2) having a second sun gear (zs2), a second ring gear (zr2) and a second planet carrier (c2) for second planetary gear set (zp2) meshing with the second sun gear (zs2) and the second ring gear (zr2), wherein the transmission input shaft (12) is rotationally fixed to the first planet carrier (c1), and the first ring gear (zr1) and the second ring gear (zr2) are permanently connected to one another and are rotationally fixed to the transmission output shaft (13), further comprising a first electric machine (E1) and a second electric machine (E2), wherein the first electric machine (E1) is in permanent driving engagement with first sun gear (zs1) and the second electric machine (E2) is in driving engagement with the second sun gear (zs2) in at least one operating mode, and wherein the first sun gear (zs1) can be connected to the housing (11) via a first switching element (S1). According to the invention, the second planet carrier (c2) is fixedly connected to the housing (11) and the second electric machine (E2) is drivingly engaged or can be drivingly engaged to the second sun gear (zs2).

A drive device for an electric vehicle includes: a motor configured to be in a drive wheel of the electric wheel; and a reduction gear configured to reduce rotational speed of the motor and transmit resultant rotation to the drive wheel; the reduction gear including a sun gear configured to be driven by the motor, a first planetary gear that is configured to mesh with the sun gear and has a first number of teeth, a fixed ring gear that is meshed with the first planetary gear and arranged non-rotatably, a second planetary gear that is coupled to the first planetary gear and has a second number of teeth that is smaller than the first number of teeth, a movable ring gear that is meshed with the second planetary gear and arranged rotatably, and a transmission member configured to transmit rotation of the movable ring gear to the drive wheel.

A drive device for an electric vehicle includes: a motor configured to be in a drive wheel of the electric wheel; and a reduction gear configured to reduce rotational speed of the motor and transmit resultant rotation to the drive wheel; the reduction gear including a sun gear configured to be driven by the motor, a first planetary gear that is configured to mesh with the sun gear and has a first number of teeth, a fixed ring gear that is meshed with the first planetary gear and arranged non-rotatably, a second planetary gear that is coupled to the first planetary gear and has a second number of teeth that is smaller than the first number of teeth, a movable ring gear that is meshed with the second planetary gear and arranged rotatably, and a transmission member configured to transmit rotation of the movable ring gear to the drive wheel.

The invention provides a wind turbine, comprising: a turbine rotor comprising a set of turbine rotor blades and defining a rotor rotational axis, said turbine rotor mounted on a tower; an electrical generator for converting mechanical energy of said turbine rotor into electrical energy, comprising a generator rotor drivingly coupled to said turbine rotor and mounted on said tower; a transmission system coupling said turbine rotor to said generator rotor, and comprising: an upstream stepped planetary gearbox comprising a upstream ring gear drivingly coupled to said turbine rotor, upstream first planet gears drivingly coupled with said upstream ring gear, upstream second planet gears, each rotationally coupled with a first planet gear, and an upstream sun gear drivingly coupled to said upstream second and coupled to said generator rotor, wherein said upstream second planet gears are axially offset to one another.

The invention provides a wind turbine, comprising: a turbine rotor comprising a set of turbine rotor blades and defining a rotor rotational axis, said turbine rotor mounted on a tower; an electrical generator for converting mechanical energy of said turbine rotor into electrical energy, comprising a generator rotor drivingly coupled to said turbine rotor and mounted on said tower; a transmission system coupling said turbine rotor to said generator rotor, and comprising: an upstream stepped planetary gearbox comprising a upstream ring gear drivingly coupled to said turbine rotor, upstream first planet gears drivingly coupled with said upstream ring gear, upstream second planet gears, each rotationally coupled with a first planet gear, and an upstream sun gear drivingly coupled to said upstream second and coupled to said generator rotor, wherein said upstream second planet gears are axially offset to one another.