An electric axle having an electric drivetrain including a motor/generator, a first planetary gear set operably coupled to the motor/generator, and a second planetary gear set operably coupled to the first planetary gear set, wherein the first planetary gear set includes a first ring gear, a first planet carrier, and a first sun gear, and wherein the second planetary gear set includes a second ring gear, a second planet carrier, and a second sun gear; a drive wheel axle operably coupled to the electric drivetrain; and a first wheel and a second wheel coupled to the drive wheel axle.

An axle assembly having an electric motor module, a drive pinion, a planetary gear set, and at least one one-way freewheel clutch. The planetary gear set may operatively connect the electric motor module and the drive pinion. The one-way freewheel clutch may be configured to selectively couple at least two components of the planetary gear set.

A drive device includes a motor, a decelerator connected to the motor, a differential connected to the motor via the decelerator, a housing that accommodates the motor, the decelerator, and the differential, an oil pump that includes a motor assembly and a pump assembly that is rotated by the motor assembly, and sends, to the motor, oil accommodated in the housing, a rotation sensor to detect rotation of the pump assembly, and a controller to control the motor. The controller limits an output of the motor based on a detection result of the rotation sensor.

A two-speed transmission system integrated with an inner rotor hub motor, including an inner rotor hub motor, a steering knuckle, a fastening screw, a first transmission casing, a second transmission casing, a screw, a first planetary gear train, a second planetary gear train, a first electromagnetic brake, a second electromagnetic brake, a tire, a wheel rim, a rim bolt, a rim nut, a wheel hub, a shaft end bolt, a brake disc and a brake caliper. This invention also provides an electric vehicle, which balances the requirements for dynamics performance and driving economics and achieves better overall performances. The two-speed transmission system of this invention realizes gear shifting and long-term no-power parking braking.

A shifting mechanism in which an inclination of a sleeve with respect to a shift fork is reduced while maintaining a clearance between the shift fork and the sleeve. In the shifting mechanism, an engagement groove is formed entirely around a shift sleeve, and a cutout is formed on the engagement groove. A first diameter of the shift sleeve between predetermined sites of the bottom of the engagement groove within the cutouts is shorter than a second diameter of the shift sleeve between predetermined sites of the bottom of the engagement groove. A straight-line distance between the engagement ridges formed on both ends of the shift fork is longer than the first diameter but shorter than the second diameter.

An electric drive device has a planetary gear set, which includes has a first sun gear, a first planet carrier and a first ring gear. The drive device also includes a planetary gear set with a second sun gear that is or can be non-rotatably coupled to the first ring gear, a second planet carrier and a second ring gear that is or can be non-rotatably coupled to the first planet carrier. An electric motor has a rotor with an input shaft driveable by the rotor and permanently non-rotatably connected to the first sun gear. The drive device also includes an output shaft, a differential gear, a first switching element, and a second switching element. The planetary gear sets are arranged coaxially to the differential gear and the differential gear has a ball-shaped differential having a differential housing.

Electric vehicle drive arrangement having input and output shafts (EW, AW) and a change-speed transmission (G). The transmission (G) has two planetary gearsets (PS1, PS2) and first, second and third shifting elements (SE1, SE2, SE3) for engaging first, second and third gears (G1, G2, G3). The first planetary gearset (PS1) comprises a first sun shaft (SO1), a first ring gear shaft (HR1) and a first carrier shaft (ST1). The second planetary gearset (PS2) comprises a second sun shaft (SO2), a second ring gear shaft (HR2) and a second carrier shaft (ST2). The first carrier shaft (ST1) is connected to the second ring gear shaft (HR2), and the first sun shaft (SO1) forms the transmission input shaft (EW). The second carrier shaft (ST2) forms the transmission output shaft (AW). The first shifting element engages first gear, the second shifting element engages second gear and the third shifting element engages third gear.

An electric driveline, comprising at least a first and a second electric machine, at least a first and a second output, and at least a first planetary gear set including three drivingly connected components including a sun gear, a planetary carrier and a ring gear. The first and the second electric machine are drivingly connected or connectable with the first and the second output via the first planetary gear set. At least one of the first and the second electric machine is selectively connected with the same one of the three components of the first planetary gear set via at least two different gear ratios, and/or the same one of the three components of the first planetary gear set is selectively connected with each of the first and the second output via at least two different gear ratios. The disclosure further concerns a method of operating an electric driveline.

A two-speed transmission for an electric vehicle includes a planetary gear set selectively coupling an input shaft and an output shaft. The planetary gear set is configured to provide two forward gear ratios and neutral. The planetary gear set includes at least one sun gear, at least one pinion in meshing engagement with the at least one sun gear, at least one ring gear meshingly engaged with the at least one pinion, and a carrier. The carrier supports the at least one pinion and is connected to the output shaft such that rotation of the carrier drives the output shaft. The two-speed transmission also includes one or more elements that rotatably couple the at least sun gear, the at least one pinion, the at least one ring gear, the input shaft, and the carrier with one another and/or a ground. Examples of such elements include clutches, brakes, and mechanical diodes.

A drive axle of a vehicle includes an electric motor having an output shaft. At least one of a gear and a planetary gear set is operably connected to the output shaft of the electric motor. The at least one of the gear and the planetary gear set is operably connected to a differential configured to transfer torque to two axle half shafts of the vehicle. At least one clutch configured to facilitate a plurality of gear ratios between the electric motor and the differential.